0001193125-26-233537 | 10-K | XBRL Viewer

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Stock-Based Compensation - Schedule of RSU and PSU Activity (Details) - USD ($)	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Restricted Stock Units (RSUs)
Number of Shares
Beginning balance (in shares)	2,330,344
Granted (in shares)	2,080,783
Issued (in shares)	(1,109,483)
Forfeited (in shares)	(209,201)
Ending balance (in shares)	3,092,443	2,330,344
Weighted-Average Grant-Date Fair Value
Beginning balance (in dollars per share)	$ 28.88
Granted (in dollars per share)	27.29	$ 27.54	$ 36.14
Issued (in dollars per share)	28.98
Forfeited (in dollars per share)	28.09
Ending balance (in dollars per share)	$ 27.83	$ 28.88
Weighted-Average Remaining Contractual Life (In years)	11 months 1 day	11 months 12 days
Aggregate Intrinsic Value	$ 93,144	$ 57,932
Performance Stock Units (PSUs)
Number of Shares
Beginning balance (in shares)	2,145,781
Granted (in shares)	533,437
Cancelled	(153,650)
Issued (in shares)	(231,653)
Forfeited (in shares)	(958,266)
Ending balance (in shares)	1,335,649	2,145,781
Weighted-Average Grant-Date Fair Value
Beginning balance (in dollars per share)	$ 24.86
Granted (in dollars per share)	29.44
Cancelled (in dollars per share)	24.32
Issued (in dollars per share)	27.8
Forfeited (in dollars per share)	22.54
Ending balance (in dollars per share)	$ 27.9	$ 24.86
Weighted-Average Remaining Contractual Life (In years)	1 year 5 months 23 days	1 year 9 months 18 days
Aggregate Intrinsic Value	$ 40,230,000	$ 53,344,000

Property, Plant and Equipment, Net - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024	Mar. 30, 2024
Property, Plant and Equipment [Line Items]
Depreciation expense	$ 39,337	$ 37,447	$ 56,214
Amortization of finance lease right-of-use assets	1,392	$ 1,397	$ 581
Decrease in depreciation expense	14,944
Increase (decrease) in net income (loss)	$ (11,806)
Increase (decrease) in net income (loss) per share	$ (0.06)
Decrease in benefit for income taxes	$ 3,138
Asset intended to be sold		1 year
Impairment on assets held for sale	6,590
Assets identified no longer meeting held for sale	$ 9,751
Value of assets		$ 16,508
Minimum
Property, Plant and Equipment [Line Items]
Average useful life of machinery and equipment				7 years
Maximum
Property, Plant and Equipment [Line Items]
Average useful life of machinery and equipment				10 years
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Average useful life of machinery and equipment	3 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Average useful life of machinery and equipment	10 years

Restructurings - Summary of Changes in Accrual for Employee Severance and Related Expenses (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025
January 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Beginning Balance	$ 1,647	$ 0
Costs incurred	$ 1,562	$ 5,121
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Product and Service Sold, Research and Development Expense, Selling, General and Administrative Expense	Cost of Product and Service Sold, Research and Development Expense, Selling, General and Administrative Expense
Cash disbursements	$ (5,114)	$ (3,910)
Other	2,067	436
Ending Balance	162	1,647
June 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Beginning Balance	0
Costs incurred	$ 4,826
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]	Cost of Product and Service Sold, Research and Development Expense, Selling, General and Administrative Expense
Cash disbursements	$ (2,726)
Other	(283)
Ending Balance	$ 1,817	$ 0

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References + Details

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Other Long-Term Liabilities (Tables)

12 Months Ended

Mar. 27, 2026

Other Liabilities Disclosure [Abstract]

Schedule of Other Long-Term Liabilities

The composition of other long-term liabilities is as follows:


	March 27, 2026		March 28, 2025
Accrued retirement and defined benefit plan obligation	$	8,738	$	9,997
Provision for uncertain tax positions		6,213		6,022
Other long-term liabilities		163		—
Total	$	15,114	$	16,019

Stock-Based Compensation - Schedule of Stock-Based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	$ 47,910	$ 41,868	$ 42,457
Income tax benefit	(5,074)	(4,049)	(4,379)
Total stock-based compensation expense, net of taxes	42,836	37,819	38,078
Cost of sales
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	3,955	2,877	5,359
Research and development
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	15,799	14,624	13,894
Selling, general and administrative
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	28,156	24,367	23,204
Restricted Stock Units (RSUs)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	41,309	32,144	28,162
Performance Stock Units (PSUs)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	5,120	8,561	12,825
Employee Stock Purchase Plan (ESPP)
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	1,384	1,099	1,438
Other
Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]
Stock-based compensation	$ 97	$ 64	$ 32

Retirement Plans - Schedule of Estimated Future Benefit Payments (Details) - Pension Plan $ in Thousands	Mar. 27, 2026 USD ($)
Defined Benefit Plan, Expected Future Benefit Payment [Abstract]
2027	$ 1,932
2028	1,585
2029	1,373
2030	1,350
2031	1,836
Total 5 years thereafter	10,961
Total	$ 19,037

Cybersecurity Risk Management, Strategy and Governance	12 Months Ended
Cybersecurity Risk Management, Strategy and Governance	Mar. 27, 2026
Cybersecurity Risk Management, Strategy, and Governance [Line Items]
Cybersecurity Risk Management Processes for Assessing, Identifying, and Managing Threats [Text Block]	Item 1C. Cybersecurity. Cybersecurity Risk Management and Strategy We have developed and implemented a cybersecurity risk management program informed by the National Institute of Standards and Technology Cybersecurity Framework and other applicable industry standards and intended to protect the confidentiality, integrity, and availability of our critical systems and information. Our cybersecurity risk management program is integrated into our overall enterprise risk management program, and shares common methodologies, reporting channels and governance processes that apply across the enterprise risk management program to other legal, compliance, strategic, operational, and financial risk areas. Key elements of our cybersecurity risk management program include: • risk assessments designed to help identify material cybersecurity risks to our critical systems and information; • a formal IT risk register documenting and mitigating identified risks, reviewed by management on a quarterly basis; • a security team principally responsible for managing (1) our cybersecurity risk assessment processes, (2) our security controls, and (3) our response to cybersecurity incidents; • the regular use of external service providers to independently assess and test security posture, as well as to otherwise assist with aspects of our security processes on an as needed basis; • cybersecurity awareness training of our employees, including incident response personnel and senior management; • a written cybersecurity incident response plan that includes procedures for responding to cybersecurity incidents; • periodic tabletop exercises conducted by outside firms to evaluate our incident response plan and response capabilities; and • a third-party risk management process for key service providers based on our assessment of their criticality to our operations and respective risk profile. We have not identified risks from known cybersecurity threats, including as a result of any prior cybersecurity incidents, which have materially affected us, including our operations, business strategy, results of operations, or financial condition. We face risks from cybersecurity threats that, if realized, are reasonably likely to materially affect us, including our operations, business strategy, results of operations, or financial condition. See “Risk Factors—Risks Related to our Information Technology, Intellectual Property, AI Technologies, and Data Security and Privacy.” Cybersecurity Governance Our Board considers cybersecurity risk as part of its risk oversight function and has delegated to the Audit Committee (the “Committee”) oversight of risk assessment and risk management, including cybersecurity and other information technology risks. The Committee oversees management’s implementation of our cybersecurity risk management program. The Committee receives periodic reports from management on our cybersecurity risks. These presentations may cover a range of topics, including: • the current cybersecurity landscape and emerging threats; • progress on cybersecurity projects; • reports about cybersecurity incidents it considers significant or potentially significant; • lessons learned from past events; and • adherence to regulatory requirements and/or industry standards, as appropriate. The Committee reports to the full Board regarding its activities, including those related to cybersecurity. The full Board also periodically receives briefings from management on our cyber risk management program. Board members receive presentations on cybersecurity topics from our Chief Digital and Information Officer. Our Chief Digital and Information Officer is primarily responsible for assessing and managing material risks from cybersecurity threats. Our Chief Digital and Information Officer also has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained external cybersecurity consultants. Our Chief Digital and Information Officer has more than 30 years of experience in information technology, including prior experience in cybersecurity architecture. We have an operational information security team with a broad range of backgrounds, years of experience and levels of information security certifications, including Certified Information Systems Security Professional and ISO27001 certified lead auditor. Our management team works closely with our Chief Digital and Information Officer to stay informed about and monitor efforts to prevent, detect, mitigate, and remediate cybersecurity risks and incidents through various means, which may include briefings from internal security personnel, threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged by us, and alerts and reports produced by security tools deployed in our IT environment.
Cybersecurity Risk Management Processes Integrated [Flag]	true
Cybersecurity Risk Management Processes Integrated [Text Block]	Our cybersecurity risk management program is integrated into our overall enterprise risk management program, and shares common methodologies, reporting channels and governance processes that apply across the enterprise risk management program to other legal, compliance, strategic, operational, and financial risk areas.
Cybersecurity Risk Management Third Party Engaged [Flag]	true
Cybersecurity Risk Third Party Oversight and Identification Processes [Flag]	true
Cybersecurity Risk Materially Affected or Reasonably Likely to Materially Affect Registrant [Flag]	false
Cybersecurity Risk Board of Directors Oversight [Text Block]	Cybersecurity Governance Our Board considers cybersecurity risk as part of its risk oversight function and has delegated to the Audit Committee (the “Committee”) oversight of risk assessment and risk management, including cybersecurity and other information technology risks. The Committee oversees management’s implementation of our cybersecurity risk management program. The Committee receives periodic reports from management on our cybersecurity risks. These presentations may cover a range of topics, including: • the current cybersecurity landscape and emerging threats; • progress on cybersecurity projects; • reports about cybersecurity incidents it considers significant or potentially significant; • lessons learned from past events; and • adherence to regulatory requirements and/or industry standards, as appropriate. The Committee reports to the full Board regarding its activities, including those related to cybersecurity. The full Board also periodically receives briefings from management on our cyber risk management program. Board members receive presentations on cybersecurity topics from our Chief Digital and Information Officer. Our Chief Digital and Information Officer is primarily responsible for assessing and managing material risks from cybersecurity threats. Our Chief Digital and Information Officer also has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained external cybersecurity consultants. Our Chief Digital and Information Officer has more than 30 years of experience in information technology, including prior experience in cybersecurity architecture. We have an operational information security team with a broad range of backgrounds, years of experience and levels of information security certifications, including Certified Information Systems Security Professional and ISO27001 certified lead auditor. Our management team works closely with our Chief Digital and Information Officer to stay informed about and monitor efforts to prevent, detect, mitigate, and remediate cybersecurity risks and incidents through various means, which may include briefings from internal security personnel, threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged by us, and alerts and reports produced by security tools deployed in our IT environment.
Cybersecurity Risk Board Committee or Subcommittee Responsible for Oversight [Text Block]	Our Board considers cybersecurity risk as part of its risk oversight function and has delegated to the Audit Committee (the “Committee”) oversight of risk assessment and risk management, including cybersecurity and other information technology risks. The Committee oversees management’s implementation of our cybersecurity risk management program.
Cybersecurity Risk Process for Informing Board Committee or Subcommittee Responsible for Oversight [Text Block]	The Committee receives periodic reports from management on our cybersecurity risks.
Cybersecurity Risk Role of Management [Text Block]	The Committee reports to the full Board regarding its activities, including those related to cybersecurity. The full Board also periodically receives briefings from management on our cyber risk management program. Board members receive presentations on cybersecurity topics from our Chief Digital and Information Officer.
Cybersecurity Risk Management Positions or Committees Responsible [Flag]	true
Cybersecurity Risk Management Positions or Committees Responsible [Text Block]	Our Chief Digital and Information Officer is primarily responsible for assessing and managing material risks from cybersecurity threats. Our Chief Digital and Information Officer also has primary responsibility for our overall cybersecurity risk management program and supervises both our internal cybersecurity personnel and our retained external cybersecurity consultants.
Cybersecurity Risk Management Expertise of Management Responsible [Text Block]	Our Chief Digital and Information Officer has more than 30 years of experience in information technology, including prior experience in cybersecurity architecture. We have an operational information security team with a broad range of backgrounds, years of experience and levels of information security certifications, including Certified Information Systems Security Professional and ISO27001 certified lead auditor.
Cybersecurity Risk Process for Informing Management or Committees Responsible [Text Block]	Our management team works closely with our Chief Digital and Information Officer to stay informed about and monitor efforts to prevent, detect, mitigate, and remediate cybersecurity risks and incidents through various means, which may include briefings from internal security personnel, threat intelligence and other information obtained from governmental, public or private sources, including external consultants engaged by us, and alerts and reports produced by security tools deployed in our IT environment.
Cybersecurity Risk Management Positions or Committees Responsible Report to Board [Flag]	true

Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Cash flows from operating activities:
Net (loss) income	$ (14,653)	$ (72,763)	$ 152,888
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation and amortization	67,593	64,502	71,382
Amortization of deferred financing costs	2,245	2,513	527
Deferred income taxes	(11,994)	(16,301)	(18,613)
Stock-based compensation	47,910	41,868	42,457
Loss on change in fair value of forward repurchase contract	0	34,752	0
Impairment of assets held for sale	6,590	0	0
Impairment of long-lived assets	0	0	13,218
Provisions for inventory and expected credit losses	10,011	9,216	10,286
Change in fair value of marketable securities	0	0	3,579
Other non-cash reconciling items	653	6,984	70
Changes in operating assets and liabilities:
Trade accounts receivable	(9,201)	33,081	(7,964)
Accounts receivable - other	(9,805)	155	(1,035)
Inventories	(6,267)	(30,160)	(15,848)
Payment to related party	(15,000)	0	0
Prepaid expenses and other assets	49,417	(4,756)	(40,231)
Trade accounts payable	5,996	4,044	(12,653)
Due to and from related party	(1,740)	5,115	5,231
Other changes in operating assets and liabilities, net	41,314	(16,337)	(21,579)
Net cash provided by operating activities	163,069	61,913	181,715
Cash flows from investing activities:
Purchases of property, plant and equipment	(38,176)	(39,955)	(124,772)
Purchases of intangible assets	0	(1,180)	0
Acquisition of business, net of cash acquired and working capital adjustment	0	319	(408,119)
Investment in debt security	(3,541)	0	0
Sales in marketable securities	0	0	16,175
Net cash used in investing activities	(41,717)	(40,816)	(516,716)
Cash flows from financing activities:
Borrowings of 2023 term loan facility, net of deferred financing costs	0	0	245,452
Repayment of 2020 term loan facility	0	0	(25,000)
Net proceeds from 2026 Refinanced Term Loan Facility	285,000	193,081	0
Repayment of term loan	(345,000)	(105,000)	(625)
Repayments of other debt	0	0	(842)
Finance lease payments	(1,368)	(1,201)	(142)
Receipts on related party notes receivable	0	1,875	3,750
Payments for intangible assets	(5,000)	0	0
Payments for taxes related to net share settlement of equity awards	(12,612)	(16,238)	(25,900)
Proceeds from issuance of common stock under employee purchase plan	3,337	3,511	3,635
Repurchases of common stock	0	(853,921)	0
Net proceeds from issuance of common stock	0	665,850	0
Payments for taxes related to repurchase of common stock	(1,713)	0	0
Dividends paid to non-controlling interest	(23)	(19)	0
Payments of debt issuance costs	0	0	(1,450)
Net cash (used in) provided by financing activities	(77,379)	(112,062)	198,878
Effect of exchange rate changes on cash and cash equivalents and restricted cash	277	(89)	(421)
Net increase (decrease) in cash and cash equivalents and restricted cash	44,250	(91,054)	(136,544)
Cash and cash equivalents and restricted cash at beginning of period	131,107	222,161	358,705
Cash and cash equivalents and restricted cash at end of period:	175,357	131,107	222,161
Reconciliation of cash and cash equivalents and restricted cash:
Cash and cash equivalents at beginning of period	121,334	212,143	351,576
Restricted cash at beginning of period	9,773	10,018	7,129
Cash and cash equivalents at end of period	168,753	121,334	212,143
Restricted cash at end of period	6,604	9,773	10,018
Supplemental disclosures of cash flow information:
Cash paid for interest	19,375	21,959	10,153
Cash paid for income taxes, net of refunds	(27,081)	11,639	89,927
Non-cash transactions:
Property, plant and equipment purchases included in trade accounts payable and accrued expenses	(3,961)	(4,463)	(4,157)
Right-of-use assets obtained in exchange for lease liabilities	1,584	6,999	10,450
Assets held for sale transferred from property, plant and equipment, net	$ (9,751)	$ 16,508	$ 0

Leases - Finance Lease (Details) - USD ($) $ in Thousands	12 Months Ended
Leases - Finance Lease (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Finance Lease, Assets And Liabilities, Lessee [Abstract]
Amortization of finance lease right-of-use assets	$ 1,392	$ 1,397	$ 581
Interest on lease liabilities	$ 276	$ 246	$ 29
Weighted-average remaining lease term - finance leases	3 years 7 months 6 days	4 years 7 months 6 days	5 years 7 months 6 days
Weighted-average discount rate - finance leases	7.70%	7.70%	7.70%
Property, plant and equipment, net	$ 5,279	$ 6,206
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Property, Plant and Equipment, Net	Property, Plant and Equipment, Net
Current portion of long-term debt	$ 1,530	$ 1,423
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Current Maturities	Long-Term Debt, Current Maturities
Long-term debt	$ 4,862	$ 5,774
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-Term Debt, Excluding Current Maturities	Long-Term Debt, Excluding Current Maturities

Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Deferred income tax assets:
Capitalized research and development costs	$ 92,034	$ 87,759
Accrued bonuses, sales commissions and other compensation	10,456	6,502
Inventory and sales related	18,574	15,629
Stock-based compensation	4,651	3,780
Tax credits	3,290	3,154
Lease liabilities	3,960	2,442
Property, plant and equipment, net	1,923	1,918
Other accruals and reserves	1,359	3,753
NOL carryforwards	4,314	5,255
Equity method and other investments	1,352	0
Gross deferred income tax assets	141,913	130,192
Valuation allowance for deferred income tax assets	(5,779)	(4,250)
Total deferred income tax assets	136,134	125,942
Deferred income tax liabilities:
Equity method and other investments	0	(641)
Intangibles assets, net	(38,349)	(42,623)
Property, plant and equipment, net	(15,099)	(12,108)
Right-of-use assets	(2,465)	(2,042)
Total deferred income tax liabilities	(55,913)	(57,414)
Deferred income tax assets	$ 80,221	$ 68,528

Revenue from Contracts with Customers - Net Sales by Core End Market and Application (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Disaggregation of Revenue [Line Items]
Total net sales	$ 890,096	$ 725,006	$ 1,049,367
Automotive
Disaggregation of Revenue [Line Items]
Total net sales	628,561	535,205	759,454
Industrial and Other
Disaggregation of Revenue [Line Items]
Total net sales	$ 261,535	$ 189,801	$ 289,913

- Definition

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Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 11.L)
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-Paragraph 4
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-URI https://asc.fasb.org/1943274/2147479806/606-10-50-4

+ Details

Inventories - Schedule of Inventories (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 10,323	$ 7,354
Work in process	133,585	127,651
Finished goods	37,844	48,909
Total	$ 181,752	$ 183,914

Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Other Liabilities Disclosure [Abstract]
Accrued retirement and defined benefit plan obligation	$ 8,738	$ 9,997
Provision for uncertain tax positions	6,213	6,022
Other long-term liabilities	163	0
Total	$ 15,114	$ 16,019

Goodwill and Intangible Assets - Schedule of Intangible Assets, Net (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Finite-Lived Intangible Assets [Line Items]
Gross	$ 326,293	$ 322,661
Accumulated Amortization	(87,618)	(60,546)
Net Carrying Amount	238,675	262,115
Patents
Finite-Lived Intangible Assets [Line Items]
Gross	53,126	49,749
Accumulated Amortization	(30,009)	(25,710)
Net Carrying Amount	23,117	24,039
Customer relationships
Finite-Lived Intangible Assets [Line Items]
Gross	15,187	14,964
Accumulated Amortization	(5,125)	(4,102)
Net Carrying Amount	10,062	10,862
Completed technologies
Finite-Lived Intangible Assets [Line Items]
Gross	255,618	255,588
Accumulated Amortization	(52,391)	(30,648)
Net Carrying Amount	203,227	224,940
Indefinite-lived process technology and trademarks
Finite-Lived Intangible Assets [Line Items]
Gross	2,269	2,274
Net Carrying Amount	2,269	2,274
Trademarks and other
Finite-Lived Intangible Assets [Line Items]
Gross	93	86
Accumulated Amortization	$ (93)	$ (86)

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Stock-Based Compensation - Schedule of Performance Units Fair Value Assumptions (Details) - Performance Stock Units (PSUs) - $ / shares	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance term	2 years 10 months 17 days	2 years 9 months 14 days	2 years 10 months 13 days
Volatility	51.13%	43.46%	47.70%
Risk-free rate of return	3.91%	4.57%	3.68%
Dividend yield	0.00%	0.00%	0.00%
Weighted-average fair value per share (in dollars per share)	$ 29.57	$ 31.83	$ 43.83

- Definition

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+ Details

Retirement Plans (Tables)

12 Months Ended

Mar. 27, 2026

Retirement Benefits [Abstract]

Schedule of Expense Related to Defined Benefit Plan

Expense related to the non-U.S. defined benefit plan was as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Service cost	$	1,468		$	1,456		$	1,345
Interest cost		1,042			939			907
Expected return on plan assets		(487	)		(446	)		(468	)
Amortization of prior service cost		(8	)		(8	)		(8	)
Actuarial loss		41			71			33
Net periodic pension expense	$	2,056		$	2,012		$	1,809

Changes in Benefit Obligations and Plan Assets

Changes in the benefit obligations and plan assets for the non-U.S. defined benefit plan were as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025
Obligation and funded status of plan:
Benefit obligation at beginning of year	$	17,299		$	16,194
Service cost		1,468			1,456
Interest cost		1,042			939
Benefits paid		(695	)		(892	)
Actuarial (gain) loss		(1,294	)		11
Foreign currency exchange rate changes		(688	)		(409	)
Benefit obligation at end of year	$	17,132		$	17,299
Change in plan assets:
Fair value of plan assets at beginning of year	$	8,432		$	7,665
Actual return on plan assets		608			597
Employer contributions		1,532			1,122
Benefits paid		(582	)		(758	)
Foreign currency exchange rate changes		(386	)		(194	)
Fair value of plan assets at end of year	$	9,604		$	8,432
Underfunded status at end of year	$	(7,528	)	$	(8,867	)

Obligations and Asset Information for Plan with Projected Benefit Obligation in Excess of Plan Assets

The following table presents the obligations and asset information for the non-U.S. defined benefit plan that has a projected benefit obligation in excess of plan assets:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025
Projected benefit obligations	$	17,132	$	17,299
Plan assets		9,604		8,432
Accumulated benefit obligations		10,857		10,509

Schedule of Amounts Recorded for AOCI for Defined Benefit Plan

The amounts recorded in AOCI for the non-U.S. defined benefit plan for the fiscal years ended March 27, 2026 and
March 28, 2025 are further detailed below:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025
Net transition obligation	$	—		$	5
Prior service costs		(73	)		(71	)
Net actuarial loss		894			2,322
Amounts in AOCI before tax		821			2,256
Less: tax benefit		205			564
Balance, net of tax	$	616		$	1,692

Schedule of Weighted-Average Assumptions

Weighted-Average Assumptions Used to Determine Projected Benefit Obligation


	March 27, 2026			March 28, 2025
Non-U.S. assumed discount rate		7.27	%		6.33	%
Non-U.S. rate of compensation increases		5.50	%		5.50	%

Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost


	March 27, 2026			March 28, 2025			March 29, 2024
Non-U.S. assumed discount rate		7.27	%		6.33	%		6.21	%
Non-U.S. expected long-term return on plan assets		5.44	%		5.45	%		5.54	%
Non-U.S. rate of compensation increases		5.50	%		5.50	%		5.50	%

Fair Value of Entity's Plan Assets

The table below sets forth the fair value of the entity’s plan assets using the same three-level hierarchy of fair value inputs described in Note 2, “Summary of Significant Accounting Policies”:


	Fair Value at March 27, 2026		Level 1		Level 2		Level 3
Assets of non-U.S. defined benefit plan:
Government securities	$	3,638	$	3,638	$	—	$	—
Unit investment trust fund		1,915		—		1,915		—
Loans		760		—		—		760
Bonds		313		—		313		—
Stocks and other investments		2,978		2,037		1		940
Total	$	9,604	$	5,675	$	2,229	$	1,700


	Fair Value at March 28, 2025		Level 1		Level 2		Level 3
Assets of non-U.S. defined benefit plan:
Government securities	$	3,023	$	3,023	$	—	$	—
Unit investment trust fund		1,719		—		1,719		—
Loans		654		—		—		654
Bonds		341		—		341		—
Stocks and other investments		2,695		1,845		3		847
Total	$	8,432	$	4,868	$	2,063	$	1,501

Schedule of Changes in Fair Value of Level 3 Plan Assets

The following table shows the change in fair value of Level 3 plan assets:


	Level 3 Non-U.S. Defined Plan Assets
	Loans			Stocks
Balance at March 29, 2024	$	574		$	909
Additions		475			—
Redemptions		(381	)		—
Revaluation of debt and equity securities		—			(39	)
Change in foreign currency exchange rates		(14	)		(23	)
Balance at March 28, 2025	$	654		$	847
Additions		558			—
Redemptions		(424	)		—
Revaluation of debt and equity securities		(2	)		126
Change in foreign currency exchange rates		(26	)		(33	)
Balance at March 27, 2026	$	760		$	940

Schedule of Estimated Future Benefit Payments

The following table projects the benefits expected to be paid to participants from the plans in each of the following fiscal years. The majority of the payments will be paid from Company assets.


	Pension Benefits
2027	$	1,932
2028		1,585
2029		1,373
2030		1,350
2031		1,836
Total 5 years thereafter		10,961
Total	$	19,037

Summary of Significant Accounting Policies

12 Months Ended

Mar. 27, 2026

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Principles of Consolidation

The accompanying consolidated financial statements include the accounts of the Company and those entities required to be consolidated under GAAP. Intercompany profits, transactions, and balances among the consolidated entities have been eliminated.

Use of Estimates

The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets, liabilities, and disclosures of contingencies at the date of the consolidated financial statements and the reported amounts of net sales and expenses during the reporting period. On an ongoing basis, management evaluates its estimates, assumptions and judgments, including those related to the valuation of acquired intangible assets, impairment assessment and valuation of goodwill, intangible assets and tangible long-lived assets, the net realizable value of inventory, income taxes, stock-based compensation, and sales allowances. Actual results could differ from those estimates, and such differences may be material to the consolidated financial statements.

Reclassifications

Certain reclassifications have been made to prior-period amounts to conform to current-period reporting classifications.

Segment Information

As of March 27, 2026, the Company operates in one reportable segment, which involves the design, development, production and distribution of various ICs in various markets worldwide. The Company has a single, company-wide management team that administers all properties as a whole rather than as discrete operating segments. The Chief Operating Decision Maker (“CODM”), who is the Company’s Chief Executive Officer, measures financial performance as a single enterprise and not on a legal entity or end market basis. The CODM uses consolidated net income or loss, as reported in the Consolidated Statement of Operations, as the profitability measure in making decisions. The measure of segment assets is reported on the balance sheet as total assets. Throughout the year, the CODM allocates capital resources on a project-by-project basis across the Company’s entire asset base to maximize profitability without regard to a legal entity or end market basis. The Company operates in a number of countries throughout the world in a variety of product lines through its business unit structure.

Business Combinations

The Company accounts for business combinations under the acquisition method of accounting. Accordingly, at the date of each acquisition, the Company measures the fair value of all identifiable assets acquired (including intangible assets), liabilities assumed and any remaining non-controlling interests and allocates the consideration paid to all items measured. The fair value of identifiable intangible assets acquired are based on valuations that use information and assumptions determined by management’s best estimates of inputs and assumptions a market participant would use.

Foreign Currency Translation and Transactions

The Company’s reporting currency is the U.S. Dollar. The financial statements of the Company’s foreign subsidiaries are translated from functional currency into U.S. dollars using the current exchange rate at the balance sheet date for assets and liabilities, and the average exchange rate in effect during the period for net sales and expenses. The functional currency for the Company’s international subsidiaries is generally considered to be the local currency for each entity, and, accordingly, translation adjustments for these entities are included as a component of accumulated other comprehensive loss in the Company’s consolidated balance sheets.

Non-Controlling Interests

The Company, through one of its wholly owned subsidiaries, established an affiliated entity in the Philippines for the primary purpose of purchasing, selling, leasing, developing and otherwise managing real estate acquired by the Company in the Philippines. The Company owns 40% of the equity interest in this entity, and the remaining 60% is held in a trust for the benefit of its employee retirement fund. The portion of the results of operations of this entity is shown as net income attributable to the non-controlling interests in the Company’s consolidated statements of operations for fiscal years 2026, 2025 and 2024. Additionally, the cumulative portion of the results of operations of this entity along with the interest in the net assets is shown as a component of non-controlling interest in the Company’s consolidated balance sheets.

Cash Equivalents and Restricted Cash

The Company considers all highly liquid instruments with original maturities of three months or less at the time of acquisition to be cash equivalents. At March 27, 2026 and March 28, 2025, the Company maintained investments in interest-bearing cash accounts. Because of the investments’ short term to maturity and the investments’ relative price insensitivity to changes in market interest rates, cost approximates fair value for these investments. As a result, there were no realized or unrealized gains or losses for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024. The Company has restricted cash, the use of which is restricted to the benefit of employees through a deferred compensation program.

Fair Value of Financial Instruments

Certain assets and liabilities are carried at fair value under GAAP. Fair value is the exchange price that would be received for an asset or paid to transfer a liability (at exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value, which are provided below:

Level 1 — Quoted prices in active markets for identical assets or liabilities.

Level 2 — Observable inputs (other than Level 1 prices) such as quoted prices for similar assets or liabilities, quoted prices in markets that are not active, or other inputs that are observable or can be corroborated by observable market data for substantially the full term of the assets or liabilities.

Level 3 — Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the assets or liabilities. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or examination.

The categorization of a financial instrument within the valuation hierarchy is based on the lowest level of input that is significant to the fair value measurement.

The Company’s cash equivalents and restricted cash are carried at fair values as determined according to the fair value hierarchy described above (see Note 5, “Fair Value Measurements”). The carrying value of accounts receivable, accounts payable and accrued expenses approximate their respective fair value due to the short-term nature of these assets and liabilities. The carrying value of outstanding borrowings under the line of credit agreements approximates fair value as it bears interest at a rate approximating a market interest rate.

Loans held-for-investment are carried at amortized cost and reduced by a valuation allowance for estimated credit losses, as necessary. The Company recognizes interest income on loans, including the amortization of discounts and premiums, loan fees paid and received, using the interest method. The interest method is applied on a loan-by-loan basis when collectability of the future payments is reasonably assured. Premiums and discounts are recognized as yield adjustments over the term of the related loans.

A detailed description of fair value measurement of the assets of the non-U.S. defined benefit plan is included in Note 15, “Retirement Plans.”

Trade Accounts Receivable, Net

A receivable is a right to consideration that is unconditional where only the passage of time is required before payment is due. Accounts receivables are presented net of a provision for expected credit losses, which is an estimate of amounts that may not be collectible and returns and sales allowances.

The provision for expected credit losses is our estimate of current expected credit losses (“CECL”) based on historical loss experience. The Company periodically performs detailed reviews to assess the adequacy of the allowance. The Company exercises judgment in estimating the timing, frequency and severity of losses. The Company uses an aging schedule method to estimate current expected credit losses based on days of delinquency, including information about past events and current economic conditions, as well as future forecasts of economic conditions. The Company’s accounts receivable is separated into two categories using a portfolio methodology to evaluate the allowance under the CECL impairment model based on sales categorization and similar credit quality and worthiness of the customers: original equipment manufacturers and distributors. The receivables in each category share similar risk characteristics. The Company increases the allowance for expected credit losses when the Company determines all or a portion of a receivable is uncollectible. The Company recognizes recoveries as a decrease to the allowance for expected credit losses. Adjustments to the allowance for expected credit losses are recorded as selling, general and administrative expenses in the consolidated statements of operations.

Sales allowances include sales in which the amount of consideration that the Company will receive is unknown as of the end of a reporting period. Such consideration primarily includes price protection provisions provided to distributors. The Company estimates potential future sales allowances based on historical data from prior sales adjustments. Historical experience can change over time. As a result, estimated sales allowances may differ significantly from amounts recorded in the current and historical periods.

Inventories

Inventories are stated at the lower of cost or net realizable value, with cost being determined using a standard costing system that approximates actual costs, based on a first-in, first-out method. Inventory costs include materials, labor and manufacturing overhead. The Company records inventory provisions when conditions exist that suggest that inventory may be in excess of anticipated demand, is obsolete based upon expected future demand for products and market conditions, or quality-related rejections. These provisions are reported as a reduction to raw materials and supplies, work in process and finished goods. The Company regularly evaluates the ability to realize the value of inventory based on a combination of factors, including historical usage rates, forecasted sales or usage, and product end of life dates. Assumptions used in determining management’s estimates of future product demand may prove to be incorrect, in which case the provision required for excess and obsolete inventory would have to be adjusted in the future. Although the Company performs a detailed review of its forecasts of future product demand, any significant unanticipated changes in demand could have a significant impact on the value of the Company’s inventory and reported operating results.

Property, Plant and Equipment, Net

Property, plant and equipment, net, including improvements that significantly add to productive capacity or extend useful life, are stated at historical cost less accumulated depreciation. Depreciation is computed using the straight-line method over the estimated useful lives of the assets. The Company capitalizes interest on certain projects with long-term construction periods. Maintenance and repairs expenditures are charged to expense as incurred. Estimated useful lives of the respective property, plant and equipment assets are as follows:


Asset		Useful Life
Buildings		31 years
Buildings improvements		Economic life of the building improvements
Leasehold improvements		The shorter of the remaining term of the lease or estimated useful life
Machinery and equipment		3 - 10 years
Office Equipment		3 - 7 years

Intangible Assets, Net

Intangible assets, net primarily consist of identified intangible assets related to completed acquisitions, as well as capitalized costs to acquire and defend patent and trademark-related awards. In addition, the Company holds technology, customer relationships, and non-compete agreements. The Company’s intangible assets are amortized using a method that approximates their economic benefit over their estimated useful lives ranging from three to 15 years.

Impairment of Long-Lived Assets

Long-lived assets consist of property, plant and equipment, finite-lived intangibles, such as patents, completed technologies, customer relationships and indefinite-lived intangible assets such as process technology and trademarks.

Property, plant and equipment, intangible assets and other finite-lived assets are tested for impairment whenever events or changes in business circumstances indicate that the carrying amount of the assets may not be fully recoverable. Factors the Company considers in deciding when to perform an impairment review include significant underperformance of the business in relation to expectations, significant negative industry or economic trends and significant changes or planned changes in the use of the assets. If an impairment review is performed to evaluate a long-lived asset group for recoverability, the Company compares forecasts of undiscounted cash flows expected to result from the use and eventual disposition of the long-lived asset group to its carrying value. An impairment loss would be recognized when estimated undiscounted future cash flows expected to result from the use of an asset group are less than its carrying amount. If such assets are not impaired, but their useful lives have decreased, the remaining net book value is amortized over the revised useful life.

Indefinite-lived intangible assets are reviewed for impairment at least annually or whenever events or changes in circumstances indicate that it is more likely than not that the asset is impaired. The impairment test consists of a qualitative assessment to determine if events or changes in circumstances indicate that the carrying amount of the assets may not be fully recoverable. Factors that the Company considers in deciding when to perform a quantitative impairment review include significant underperformance of the business in relation to expectations, significant negative industry or economic trends and significant changes or planned changes in the use of the assets. If such events occur, a comparison of the fair value of the intangible asset with its carrying value is performed. If the carrying value of the intangible asset exceeds its fair value, an impairment loss is recognized in an amount equal to that excess. The Company has elected the first business day of the fourth quarter of its fiscal year as the annual impairment testing date.

Goodwill

Goodwill represents the excess of the purchase price in a business combination over the fair value of the net tangible and intangible assets acquired. Goodwill is not amortized, but rather is assessed for impairment at the reporting unit level annually during the fourth quarter of each fiscal year or more frequently if we believe indicators of impairment exist. Goodwill impairment, if any, is determined by comparing the reporting unit’s fair value to its carrying value. An impairment loss is recognized in an amount equal to the excess of the reporting unit’s carrying value over its fair value, up to the amount of goodwill allocated to the reporting unit.

In testing goodwill for impairment, the Company has the option to first consider qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value. Such qualitative factors include industry and market considerations, economic conditions, entity-specific financial performance and other events, such as changes in management, strategy and primary customer base. If based on the Company’s qualitative assessment it is more likely than not that the fair value of the reporting unit is less than its carrying amount, quantitative impairment testing is required. However, if the Company concludes otherwise, quantitative impairment testing is not required. The results of the Company’s qualitative goodwill impairment test performed on the first business day of the fourth quarter for fiscal years 2026, 2025 and 2024 did not indicate any impairments.

Leases

At the inception of an arrangement, the Company determines whether the arrangement is a lease arrangement or contains a lease based on the unique facts and circumstances present. Leases with a term greater than 12 months are recognized on the balance sheet as right-of-use (“ROU”) assets with a corresponding lease liability. The Company has elected not to recognize on the consolidated balance sheets leases with an initial term of 12 months or less. Leases with an initial term of 12 months or less are directly expensed as incurred. Leases are classified as either operating or finance depending on the specific terms of the arrangement.

The Company’s leases mainly consist of facilities, office equipment, and vehicles. The majority of leases are classified as operating leases. Certain lease agreements contain provisions for future rent increases. Lease payments included in the measurement of the lease liability comprise fixed payments and future rent increases tied to an index or rate. Future rent increases dependent on an index or rate are initially measured at the index or rate at the commencement date. The Company’s leases typically do not contain residual value guarantees.

At the commencement date, operating and finance lease liabilities and their corresponding ROU assets are recorded based on the present value of lease payments over the expected lease term. The lease term includes the non-cancelable period of the lease, plus any additional periods covered by either a Company option to extend (or not to terminate) the lease that the Company is reasonably certain to exercise, or an option to extend (or not to terminate) the lease controlled by the lessor. The interest rate implicit in a lease contract is typically not readily determinable, therefore an incremental borrowing rate is used to calculate the lease liability. The incremental borrowing rate is the rate incurred to borrow on a collateralized basis over a similar term an amount equal to the lease payments in a similar economic environment. Certain adjustments to the ROU asset may be required for items such as prepayments, lease incentives received or initial direct costs paid.

Product Warranties

The Company provides warranties on its products to its customers, generally for one year from the date of shipment and in limited cases for longer periods. In the event of a failure of a product covered by these warranties, the Company must repair or replace the product or, if those remedies are insufficient, and at the discretion of the Company, provide a refund. In limited cases, the Company warrants its products to include significant liability beyond the cost of repairing or replacing the product or refunding the sales price of the product. The Company periodically assesses the adequacy of the warranty reserve and adjusts the amount, as necessary. If there is a material increase in the rate of customer claims, or the Company’s estimates of probable losses relating to specifically identified warranty exposures are inaccurate, the Company may need to record a charge against future cost of goods sold. There were $3,193 and $1,026 accrued for warranty reserves as of March 27, 2026 and March 28, 2025, respectively.

Revenue Recognition

Revenue is recognized on contracts with customers when transfer of control to the customer occurs in exchange for an amount reflecting the consideration that the Company expects to be entitled. In order to achieve this core principle, the Company applies the following five step approach:

(1) Identify the contract with a customer — The Company considers customer purchase orders, which in some cases are governed by master agreements, to be customer contracts. A contract exists when it is approved by both parties, each party’s rights and obligations are identified, payment terms are known, the customer has the ability and intent to pay and the contract has commercial substance. The Company uses judgment in determining the customer’s ability and intent to pay, which is based on factors such as the customer’s historical payment experience or, for new customers, credit and financial information pertaining to the customers.

(2) Identify the performance obligations in the contract — Performance obligations are identified as products and services that will be transferred to the customer that are both capable of being distinct, whereby the customer can benefit from the product or service either on its own or together with other resources that are readily available from third parties or from the Company, and are distinct in the context of the contract, whereby the transfer of the products or services is separately identifiable from other promises in the contract. Substantially, all of the Company’s contracts with customers contain a single performance obligation, such as the sale of mixed-signal integrated circuit products.

(3) Determine the transaction price — The transaction price is determined based on the consideration to which the Company expects to be entitled in exchange for transferring products to the customer. Variable consideration is included in the transaction price if, in the Company’s judgment, it is probable that no significant future reversal of cumulative revenue under the contract will occur.

(4) Allocate the transaction price to the performance obligations in the contract — If the contract contains a single performance obligation, the entire transaction price is allocated to that performance obligation. Contracts that contain multiple performance obligations require an allocation of the transaction price to each performance obligation based on a relative standalone selling price.

(5) Recognize revenue when a performance obligation is satisfied — Revenue is recognized when control of the product is transferred to the customer (i.e., when the Company’s performance obligation is satisfied), which typically occurs at a point in time at shipment or delivery, depending on the terms of the contract.

Sales channels

The Company sells products globally through its direct sales force, third-party distributors, independent sales representatives and consignment. The Company records revenue based on the amount of any discounted arrangement fee. When the Company transacts with a distributor, its contractual arrangement is with the distributor and not with the end customer. Whether the Company transacts business with and receives the order from a distributor or directly from an end customer, its revenue recognition policy and resulting pattern of revenue recognition for the order are the same.

The Company also uses independent sales representatives to assist in the sales process with certain customers. Sales representatives are not distributors. If a sales representative is engaged in the sales process, the Company receives the order directly from and sells the products directly to the end customer. The Company pays a commission to the sales representative, calculated as a percentage of the related customer payment. Sales representatives’ commissions are recorded as expenses when incurred and are classified as selling, general and administrative expenses in the Company’s consolidated statements of operations.

For consignment arrangements with distributors, delivery occurs and revenue is recognized when the distributor pulls product from consignment inventory that is stored at designated distributor locations. Recognition is not contingent upon resale of the products to the distributors’ customers. Until the products are pulled for use or sale by the distributor, the Company retains control over the products’ disposition, including the right to pull back or relocate the products.

Variable consideration

Variable consideration includes sales in which the amount of consideration that the Company will receive is unknown as of the end of a reporting period. Such consideration primarily includes price protection provisions provided to distributors, sales under agreements that allow rights of return, referred to as stock rotation, provided to distributors, discounts and credits provided to distributors and returns provisions offered to direct customers. The Company estimates potential future returns, credits, and sales allowances based on historical return rates, anticipated customer claims, credits issued, and changes in product sales to customers.

Practical expedients elected

Revenue recognized is adjusted based on allowances, which are prepared on a portfolio basis using a most likely amount methodology. The length of time between revenue recognition and payment is not significant under any of the Company’s payment terms. Moreover, if the period between revenue recognition and when the customer pays is one year or less, the Company elected not to account for the significant financing component.

Other Revenue Recognition Policies

Shipping and handling activities are not considered a contractual performance obligation. The Company records shipping and handling costs billed to customers as revenue with offsetting costs recorded as cost of sale.

Contract Assets and Contract Liabilities

Contract assets and contract liabilities (deferred revenue) net are reported at the contract level for each reporting period. Contract assets typically result from contracts when revenue recognized exceeds the amount billed to the customer, and right to payment is not just subject to the passage of time. Contract assets are transferred to accounts receivable when the rights become unconditional. The Company had no material contract assets as of March 27, 2026 or March 28, 2025.

Contract liabilities typically result from billings in excess of revenues recognized and relate to products shipped near the end of the reporting period for which the required revenue recognition criteria were not met. The Company had no material contract liabilities as of March 27, 2026 or March 28, 2025.

Stock-Based Compensation

The Company recognizes compensation costs for all stock-based compensation awards made to employees based upon the awards’ estimated grant-date fair value. Typically, stock-based compensation expense is recognized evenly over the vesting period. However, stock-based compensation expense related to performance-based awards is recognized relative to the probability of achievement of the requisite milestones during the vesting period. The Company accounts for forfeitures as they occur. Determining the fair value of certain stock-based compensation awards at the grant date requires judgment, including estimating the expected life of the stock awards and the volatility of the underlying market-based and projected future cash flow assumptions. Any changes to those estimates that the Company makes from time to time may have a significant impact on the stock-based compensation expense recorded and could materially impact the Company’s results of operations.

Research and Development

The Company commits substantial capital and resources to internal and collaborative research and development projects in order to provide innovative products and solutions to its customers. The Company conducts research primarily to develop new technologies, enhance current product performance, improve the functionality and reliability of existing products, and develop revolutionary new products and solutions. Research and development costs are expensed as incurred and include salaries, wages and other personnel-related costs, material costs and depreciation, consulting costs, software licensing costs, maintenance costs and facility costs.

Pension and Other Postretirement Benefit Obligations

The Company, through its subsidiaries, has various foreign defined benefit plans as well as U.S. defined contribution plans. Accredited independent actuaries calculate related plan assets, liabilities and expenses. The Company is required to make certain assumptions to assign value to the plan assets and liabilities. These assumptions are reviewed annually, based on current plan information and consultations with independent investment advisors and actuaries. The Company does not offer other defined benefits associated with postretirement benefit plans other than pensions.

The Company recognizes the funded status of a benefit plan on its consolidated balance sheets and recognizes gains, losses and prior service cost or credits that arise during the period that are not recognized as components of net periodic benefit cost as a component of other comprehensive (loss) income, net of tax. In addition, the Company measures defined benefit plan assets and obligations as of the date of the employer’s fiscal year-end consolidated balance sheets and discloses in the notes to the consolidated financial statements the gains or losses, prior service costs or credits and transition asset or obligation.

Income Taxes

The Company accounts for income taxes using the asset and liability method, which requires the recognition of deferred tax assets and liabilities for the expected future tax consequences of temporary differences between the financial statement and tax basis of assets and liabilities, as measured by enacted tax rates anticipated to be in effect when these differences are expected to reverse. This method also requires the recognition of future tax benefits to the extent that realization of such benefits is more likely than not. Deferred tax expense or benefit is the result of changes in the deferred tax assets and liabilities. The Company assesses the likelihood that its deferred tax assets will be recovered from future taxable income and, to the extent it believes, based upon the weight of available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized, a valuation allowance is established.

The Company recognizes a liability for potential payments of taxes to various tax authorities related to uncertain tax positions and other tax matters. The recorded liability is based on a determination of whether and how much of a tax benefit taken by the Company in its tax filings or positions is “more likely than not” to be realized. The amount of the benefit that may be recognized in the consolidated financial statements is the largest amount that has a greater than 50% likelihood of being realized upon ultimate settlement. To the extent that the assessment of such tax positions changes, the change in estimate is recorded in the period in which the determination is made. The Company establishes a liability, which is included in other long-term liabilities in the consolidated balance sheets, for tax-related uncertainties based on estimates of whether, and the extent to which, additional taxes will be due. These liabilities are established when the Company believes that certain positions might be challenged despite the Company’s belief that the tax return positions are fully supportable. The recorded liability is adjusted considering changes in the facts and circumstances. The provision for income taxes includes the impact of the recorded liability and changes thereto.

The Company recognizes interest and penalties related to uncertain tax positions as a component of income tax provision in the consolidated statements of operations. Accrued interest and penalties are included in accrued expenses and other current liabilities in the consolidated balance sheets.

All undistributed earnings of our foreign subsidiaries are permanently reinvested. Accordingly, the Company does not provide for U.S. income taxes on such undistributed earnings.

Net (Loss) Income Per Share

Basic net (loss) income per share is computed by dividing net (loss) income attributable to stockholders of the Company by the weighted-average number of common shares outstanding during the reporting period. Diluted net (loss) income per share is computed similarly to basic net (loss) income per share, except that it includes the potential dilution that could occur if dilutive securities were exercised. Information about potentially dilutive and antidilutive shares for the reporting period is provided in Note 17, “Net (Loss) Income per Share.”

Concentrations of Credit Risk and Significant Customers

Financial instruments that potentially subject the Company to concentrations of credit risk consist primarily of cash, cash equivalents and accounts receivable. The Company maintains its cash and cash equivalents with financial institutions that management believes to be of a high credit quality. To manage credit risk related to accounts receivables, the Company evaluates the creditworthiness of its customers and maintains allowances, to the extent necessary, for potential credit losses based upon the aging of its accounts receivable balances and known collection issues. The Company has not experienced any material credit losses during the prior two years.

As of both March 27, 2026 and March 28, 2025, no distributor or customer accounted for 10% or more of the Company’s outstanding trade accounts receivable.

For the fiscal year ended March 29, 2024, Sanken Electric Co., Ltd. (“Sanken”) accounted for 0.6% of total net sales. For the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, sales to our largest, non-affiliated distributor accounted for 9.4%, 9.3%, and 10.2% of total net sales, respectively. No other customers accounted for 10% or more of total net sales for any of these periods. See Note 21, “Related Party Transactions” for a discussion of the termination, distribution and consulting agreements between Sanken and the Company to transition the marketing and sale of the Company’s products in Japan from Sanken to the Company.

During the fiscal year ended March 27, 2026, sales from customers located outside of the United States in the aggregate accounted for 89.7% of the Company’s total net sales, with Greater China accounting for 28.0%, Japan accounting for 17.0% and Taiwan, included in Other Asia with net sales of $89,038, accounting for 10.0%. No other country accounted for greater than 10.0% of total net sales for the fiscal year ended March 27, 2026.

During the fiscal year ended March 28, 2025, sales from customers located outside of the United States in the aggregate accounted for 87.2% of the Company’s total net sales, with Greater China accounting for 25.2%, Japan accounting for 21.2%, and South Korea accounting for 10.2%. No other country accounted for greater than 10.0% of total net sales for the fiscal year ended March 28, 2025.

During the fiscal year ended March 29, 2024, sales from customers located outside of the United States in the aggregate accounted for 85.8% of the Company’s total net sales, with Greater China accounting for 26.2%, Japan accounting for 16.7%, and South Korea accounting for 10.9%. No other country accounted for greater than 10.0% of total net sales for the fiscal year ended March 29, 2024.

Other Comprehensive (Loss) Income

Other comprehensive (loss) income refers to revenues, expenses, gains and losses that are excluded from net income as these amounts are recorded directly as an adjustment to stockholders’ equity, net of tax. The Company’s other comprehensive (loss) income was composed of foreign currency translation adjustments and pension liability adjustments.

Equity-Method Investments

The Company accounts for investments in common stock or partnership interests under the equity method if the Company has the ability to exercise significant influence, but not control, over an investee. Investments in equity-method investees are included within “Equity investment in related party” in the consolidated balance sheets. The Company’s proportional share of the earnings or losses as reported by equity-method investees are classified as “(Loss) income in earnings of equity investment” in the consolidated statements of operations. The Company regularly evaluates these investments, which are not carried at fair value, for other-than-temporary impairment and records any impairment charge in earnings when the decline in value below the carrying amount of its equity-method investment is determined to be other-than-temporary.

Subsequent Events Considerations

The Company considers events or transactions that occur after the balance sheet date but prior to the issuance of the financial statements to provide additional evidence for certain estimates or to identify matters that require additional disclosure. Subsequent events have been evaluated as required. The Company has evaluated all subsequent events and determined that, other than as reported herein, there are no material recognized or unrecognized subsequent events.

Recent Accounting Pronouncements

In July 2025, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) No. 2025-05 Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets (“ASU 2025-05”). ASU 2025-05 provides a practical expedient that can be elected to be applied to accounts receivable and contract assets, which would allow entities to assume that current conditions as of the balance sheet date do not change for the remaining life of the assets when estimating expected credit losses for such assets. ASU 2025-05 is effective for annual reporting periods that began after December 15, 2025 and interim reporting periods within those annual reporting periods. Early adoption is permitted. ASU 2025-05 is currently being evaluated by the Company, but it is not expected to have a material effect on the Company’s position or operations.

In November 2024, the FASB issued ASU No. 2024-03, Income Statement—Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses (“ASU 2024-03”). ASU 2024-03 requires additional disclosures of the nature of expenses included in the Company’s income statement. The new standard requires disclosures about specific types of expenses included in the expense captions presented on the face of the income statement as well as disclosures about selling expenses. ASU 2024-03 will be applied prospectively with the option for retrospective application. The FASB subsequently issued ASU 2025-01 Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40) to clarify that all public business entities are required to adopt the guidance as stipulated in ASU 2024-03 in annual reporting periods beginning after December 15, 2026, and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the impact of adopting this guidance.

In December 2023, the FASB issued ASU No. 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires entities to provide additional information of the Company’s tax rate reconciliation, as well as additional disclosures about income taxes paid by jurisdiction. ASU 2023-09 became effective for annual reporting periods that began after December 15, 2024, with early adoption permitted. ASU 2023-09 should be applied prospectively, but entities have the option to apply it retrospectively for each period presented. In fiscal year 2026, the Company adopted ASU 2023-09, which requires enhanced disaggregation of income taxes paid and the effective tax rate reconciliation. The Company adopted this guidance on a prospective basis; accordingly, the newly required disaggregated disclosures are provided for the current period, while prior period disclosures have not been retroactively adjusted and continue to be presented under the previous disclosure requirements, as permitted by ASU 2023-09.

All other recent accounting pronouncements were determined to not have a material impact on the Company’s financial position, results of operations, cash flows, or related disclosures.

Debt and Other Borrowings

12 Months Ended

Mar. 27, 2026

Debt Disclosure [Abstract]

Debt and Other Borrowings

13.

Debt and Other Borrowings

The Company’s debt obligations consisted of the following:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025
Term Loan Facility	$	285,000		$	345,000
Unamortized debt issuance costs		(4,116	)		(6,071	)
Total loans outstanding		280,884			338,929
Finance lease liabilities		6,392			7,197
Total debt		287,276			346,126
Current portion of long-term debt and finance lease liabilities		(1,530	)		(1,423	)
Total long-term debt and finance lease liabilities, less current portion	$	285,746		$	344,703

Revolving Credit Facility under the 2023 Revolving Credit Agreement

On June 21, 2023, the Company entered into a Credit Agreement dated as of June 21, 2023 (as amended, restated, supplemented or otherwise modified, refinanced or replaced from time to time, the “2023 Revolving Credit Agreement”) by and among the Company, Allegro MicroSystems, LLC (“AML”), Morgan Stanley Senior Funding, Inc., as the administrative agent, collateral agent, a letter of credit issuers parties thereto that provided for a $224,000 revolving credit facility, which included a $20,000 letter of credit sub-facility. On August 6, 2024, upon entry into the Amendment No. 2 (the “Second Amendment”) to the 2023 Revolving Credit Agreement, the total capacity of the revolving credit facility was increased to $256,000, and the Second Amendment also provided for a new $400,000 tranche of term loans maturing in 2030 (the “2024 Term Loans”), which were paid in full in connection with entry into the Third Amendment (as defined below). The revolving credit facility is available until, and loans made thereunder will mature on, June 21, 2028. Under the terms of the 2023 Revolving Credit Agreement, interest is calculated at a rate equal to (i) Term SOFR (as defined in the 2023 Revolving Credit Agreement) in effect, plus the applicable spread (ranging from 1.50% to 1.75%) or (ii) the highest of (x) the Federal funds rate, as published by the Federal Reserve Bank of New York, plus 0.50%, (y) the prime lending rate or (z) the one-month term SOFR plus 1.00% in effect, plus the applicable spread (ranging from 0.50% to 0.75%). The applicable spreads are based on the Company’s Total Net Leverage Ratio (as defined in the 2023 Revolving Credit Agreement) at the time of the applicable borrowing. Issuance costs related to the revolving credit facility were not significant. As of March 27, 2026, there were no outstanding borrowings under the revolving credit facility.

The Company will also pay a quarterly commitment fee of 0.20% to 0.25% on the daily amount by which the commitments under the revolving credit facility exceed the outstanding loans and letters of credit under the revolving credit facility. The 2023 Revolving Credit Agreement contains certain covenants applicable to the Company and its subsidiaries, including limitations on additional indebtedness, liens, various fundamental changes, dividends and distributions, investments (including acquisitions), transactions with affiliates, asset sales, prepayment of junior financing, changes in business and other limitations customary in senior secured credit facilities. In addition, the Company is required to maintain a Total Net Leverage Ratio of no more than 4.00 to 1.00 at the end of each fiscal quarter, which may, subject to certain limitations, be increased to 4.50 to 1.00 for any quarter in which an acquisition in excess of $500,000 is conducted and for the three subsequent quarters.

The 2023 Revolving Credit Agreement provides for customary events of default. Upon an event of default, the administrative agent with the consent of, or at the request of, the holders of more than 50% in principal amount of the loans and commitments, may terminate the commitments and accelerate the maturity of the loans and enforce certain other remedies.

The Company was in compliance with its Revolving Credit Facility covenants as of March 27, 2026.

Refinancing and Repricing of Term Loans

On February 6, 2025, the Company entered into Amendment No. 3 (the “Third Amendment”) to the 2023 Revolving Credit Agreement. The Third Amendment provided for a new $375,000 tranche of term loans maturing in 2030 (the “2025 Refinanced Loans”), the proceeds of which were used, in relevant part, to (i) refinance all outstanding borrowings under the 2024 Term Loans, (ii) pay fees and expenses in connection with the foregoing and (iii) for general corporate purposes. The 2025 Refinanced Loans amortized at a rate of 0.00% per annum. The 2025 Refinanced Loans bore interest, at the Company’s option, at a rate equal to (i) Term SOFR (as defined in the 2023 Revolving Credit Agreement) in effect from time to time plus 2.00% or (ii) the highest of (x) the Federal funds rate, as published by the Federal Reserve Bank of New York, plus 0.50%, (y) the prime lending rate or (z) the one-month Term SOFR plus 1.00% in effect from time to time plus 1.00%. The 2025 Refinanced Loans were scheduled to mature on October 31, 2030. The Company incurred costs of $1,090 in connection with the Third Amendment.

Payments of $25,000, $10,000, and $25,000 were applied to the outstanding balance of the 2025 Refinanced Loans on
April 30, 2025, May 30, 2025 and July 31, 2025, respectively.

On January 21, 2026, the Company entered into Amendment No. 4 (the “Fourth Amendment”) to the 2023 Revolving Credit Agreement. The Fourth Amendment provides for a new $285,000 tranche of term loans maturing in October 2030 (the “2026 Refinanced Loans”), the proceeds of which were used, in relevant part, to refinance all outstanding borrowing under the 2025 Refinanced Loans. The 2026 Refinanced Loans amortize at a rate of 0.00% per annum. The 2026 Refinanced Loans bear interest, at the Company’s option, at a rate equal to (i) Term SOFR in effect from time to time plus 1.75% or (ii) the highest of (x) the Federal funds rate, as published by the Federal Reserve Bank of New York, plus 0.50%, (y) the prime lending rate or (z) the one-month Term SOFR plus 1.00% in effect from time to time plus 0.75%. The 2026 Refinanced Loans will mature on October 31, 2030.

The Company was in compliance with its debt covenants as of March 27, 2026.

- Definition

The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-8A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(c))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481544/470-10-50-6

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 405
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477092/405-40-50-1

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 12: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 470
-Name Accounting Standards Codification
-Publisher FASB
-URI https://asc.fasb.org/470/tableOfContent

Reference 13: http://www.xbrl.org/2003/role/disclosureRef
-Topic 835
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482925/835-30-45-2

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1B
-Subparagraph (i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B

Reference 17: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1C

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1E
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1E

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Name Accounting Standards Codification
-Section 50
-Paragraph 1I
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
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-Paragraph 1I
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481139/470-20-50-1I

+ Details

Stock-Based Compensation

12 Months Ended

Mar. 27, 2026

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

18.

Stock-Based Compensation

The Company accounts for stock-based compensation through the measurement and recognition of compensation expense for share-based payment awards made to employees over the related requisite service period, including PSUs and RSUs (all part of our 2020 Omnibus Incentive Compensation Plan). Upon meeting the time-based vesting and, if applicable, any performance conditions, common shares of the Company (net of applicable tax withholding) are issued to the employee in exchange for each share-based unit.

RSUs generally have time-based vesting requirements with equal and annual graded vesting over approximately three years subsequent to the grant date. Upon voluntary termination of employment by any employee who is “retirement eligible” as of his or her termination date, the next vesting after the termination of employment will continue to vest. In order to be retirement eligible, an employee must be at least 62 years old, have completed a minimum of five years of service with the Company, and have provided at least three months’ prior written notice of termination of employment. All outstanding employee and director RSU awards are eligible for dividend equivalents regardless of vesting status.

Restricted Stock Units

The following table summarizes RSU activity for the fiscal year ended March 27, 2026:


	Number of Shares			Weighted-Average Grant-Date Fair Value		Weighted-Average Remaining Contractual Life (In years)		Aggregate Intrinsic Value
Outstanding - March 28, 2025		2,330,344		$	28.88		0.95	$	57,932
Granted		2,080,783			27.29
Issued		(1,109,483	)		28.98
Forfeited		(209,201	)		28.09
Outstanding - March 27, 2026		3,092,443		$	27.83		0.92	$	93,144

The weighted-average grant fair value per share for RSUs granted during the fiscal years ended March 27, 2026,
March 28, 2025 and March 29, 2024 was $27.29, $27.54, $36.14, respectively. The stock-based compensation expense related to non-vested awards not yet recorded at March 27, 2026 was $52,736, which is expected to be recognized over a weighted-average of 1.9 years.

The total fair value of vested RSUs was $32,156, $30,072 and $23,032 during the fiscal years ended March 27, 2026,
March 28, 2025 and March 29, 2024, respectively.

Performance Stock Units

The Company also awards PSUs to its senior personnel based on achievement of metrics tied to financial plans and strategic objectives approved by its Board of Directors for establishing target performances. Each award reflects a target number of shares (“Target Shares”) that may be issued to the award recipient. PSU awards are generally earned upon the completion of a multi-year performance period. Whether units are earned at the end of the performance period is determined based on the achievement of certain performance objectives over the performance period. The performance objectives include achieving various metrics such as revenue targets and cumulative earnings before income taxes, depreciation and amortization levels for the performance period, and relative total stockholder return. Depending on the results achieved over the multi-year performance period, the actual number of shares that a grant recipient may receive during and at the end of the period ranges from 0% to 200% of the Target Shares granted.

The weighted-average fair value of the PSUs granted during the year was determined using the Monte Carlo simulation model incorporating the following weighted-average assumptions:


	Fiscal Year Ended
	March 27, 2026	March 28, 2025	March 29, 2024
Performance term	2.88 years	2.79 years	2.87 years
Volatility	51.13%	43.46%	47.70%
Risk-free rate of return	3.91%	4.57%	3.68%
Dividend yield	—%	—%	—%
Weighted-average fair value per share	$29.57	$31.83	$43.83

The following table summarizes PSU activity for the fiscal year ended March 27, 2026:


	Number of Shares			Weighted-Average Grant-Date Fair Value		Weighted-Average Remaining Contractual Life (In years)		Aggregate Intrinsic Value
Outstanding - March 28, 2025		2,145,781		$	24.86		1.80	$	53,344
Granted		533,437			29.44
Cancelled		(153,650	)		24.32
Issued		(231,653	)		27.80
Forfeited		(958,266	)		22.54
Outstanding - March 27, 2026		1,335,649		$	27.90		1.48	$	40,230

PSUs are included at 0% - 200% of target goals. The total compensation cost related to unvested awards not yet recorded at March 27, 2026 was $12,109, which is expected to be recognized over a weighted-average of 2.0 years.

The total grant date fair value of vested PSUs was $6,439, $15,615 and $22,777 during the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, respectively.

Employee Stock Purchase Plan

4,323,711 shares of the Company’s common stock are available for future issuance under the ESPP. The ESPP allows employees to purchase the Company’s common stock at 85% of the lesser of the stock price at the beginning or end of the offering period. Each offering period is six months.

The weighted-average fair value of the ESPP shares was determined using the Black-Scholes model incorporating the following weighted-average assumptions:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Expected performance term	0.50 years			0.50 years			0.50 years
Volatility		53.93	%		45.44	%		40.97	%
Risk-free rate of return		3.87	%		4.70	%		5.35	%
Dividend yield		—	%		—	%		—	%
Weighted-average fair value per share	$	9.34		$	7.07		$	9.51

The Company recorded stock-based compensation expense on its consolidated statements of operations as follows:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
RSUs	$	41,309	$	32,144	$	28,162
PSUs		5,120		8,561		12,825
ESPP		1,384		1,099		1,438
Other		97		64		32
Total	$	47,910	$	41,868	$	42,457


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Cost of sales	$	3,955		$	2,877		$	5,359
Research and development		15,799			14,624			13,894
Selling, general and administrative		28,156			24,367			23,204
Stock-based compensation expense		47,910			41,868			42,457
Income tax benefit		(5,074	)		(4,049	)		(4,379	)
Total stock-based compensation expense, net of taxes	$	42,836		$	37,819		$	38,078

Other Assets, Net (Tables)

12 Months Ended

Mar. 27, 2026

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Schedule of Other Assets, Net

The composition of other assets, net was as follows:


	March 27, 2026		March 28, 2025
Deposits	$	12,202	$	18,876
Other taxes receivable long-term		6,183		5,087
Income taxes receivable long-term		4,733		13,279
Investment in debt security		3,477		—
VAT receivables long-term		1,692		10,227
Other		2,954		1,875
Total	$	31,241	$	49,344

Summary of Significant Accounting Policies (Tables)

12 Months Ended

Mar. 27, 2026

Accounting Policies [Abstract]

Schedule of Property, Plant, and Equipment

Estimated useful lives of the respective property, plant and equipment assets are as follows:


Asset		Useful Life
Buildings		31 years
Buildings improvements		Economic life of the building improvements
Leasehold improvements		The shorter of the remaining term of the lease or estimated useful life
Machinery and equipment		3 - 10 years
Office Equipment		3 - 7 years

Property, plant and equipment, net is stated at cost, and consisted of the following:


	March 27, 2026			March 28, 2025
Land	$	26,549		$	25,175
Buildings, building improvements and leasehold improvements		63,929			66,258
Machinery and equipment		710,678			670,902
Office equipment		7,243			6,677
Right-of-use asset		8,797			8,182
Construction in progress		51,910			51,580
Total		869,106			828,774
Less: accumulated depreciation		(560,848	)		(525,855	)
Total	$	308,258		$	302,919

Inventories (Tables)

12 Months Ended

Mar. 27, 2026

Inventory Disclosure [Abstract]

Schedule of Inventories

Inventories include materials, labor and overhead and consisted of the following:


	March 27, 2026		March 28, 2025
Raw materials and supplies	$	10,323	$	7,354
Work in process		133,585		127,651
Finished goods		37,844		48,909
Total	$	181,752	$	183,914

Revenue from Contracts with Customers (Tables)

12 Months Ended

Mar. 27, 2026

Revenue from Contract with Customer [Abstract]

Net Sales by Core End Market and Application

Net sales by market:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
Automotive	$	628,561	$	535,205	$	759,454
Industrial and other		261,535		189,801		289,913
Total net sales	$	890,096	$	725,006	$	1,049,367

Revenue from External Customers by Products and Services

Net sales by product:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
Magnetic sensors	$	538,538	$	474,557	$	649,869
Power integrated circuits		351,558		250,449		399,498
Total net sales	$	890,096	$	725,006	$	1,049,367

Revenue from External Customers by Geographic Areas

Net sales by geography:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
Americas:
United States	$	91,412	$	92,458	$	149,283
Other Americas		41,778		24,851		32,119
EMEA:
Europe		120,562		106,726		176,628
Asia:
Greater China		249,417		183,033		274,851
Japan		150,946		153,842		175,713
South Korea		77,976		73,702		113,877
Other Asia		158,005		90,394		126,896
Total net sales	$	890,096	$	725,006	$	1,049,367

Income Taxes - Schedule of Components of (Loss) Income before Income Taxes (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
(Loss) income before income taxes
Domestic operations	$ (28,405)	$ (106,576)	$ 183,524
Foreign operations	13,504	20,880	11,273
(Loss) income before income taxes	$ (14,901)	$ (85,696)	$ 194,797

- Definition

Amount of income (loss) from continuing operations, including income (loss) from equity method investments, before deduction of income tax expense (benefit), and income (loss) attributable to noncontrolling interest.

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+ Details

Business Combinations (Tables)

12 Months Ended

Mar. 27, 2026

Crocus

Business Acquisition [Line Items]

Summary of Preliminary and Final Purchase Price Allocation

The final purchase price allocation is as follows:


Total purchase consideration	$	411,772
Cash		4,155
Inventories		4,208
Accounts receivable		484
Prepaid expenses and other current assets		2,400
Property, plant and equipment		7,606
Right-of-use asset*		9,770
Completed technology**		234,000
Customer relationships**		12,000
Other assets		226
Total identifiable assets acquired		274,849
Accounts payable		(5,317	)
Accrued expenses and other current liabilities		(2,442	)
Long-term debt		(842	)
Lease liability***		(10,390	)
Other long-term liabilities		(2,813	)
Deferred income tax liabilities		(15,889	)
Total identifiable net assets		237,156
Goodwill	$	174,616

*Primarily included in Property, plant and equipment, net in the consolidated balance sheets.

**Included in Intangible assets, net in the consolidated balance sheets.

***Primarily included in Long-term debt in the consolidated balance sheets.

- Definition

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+ Details

Goodwill and Intangible Assets - Future Amortization Expense (Details) $ in Thousands	Mar. 27, 2026 USD ($)
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
2027	$ 25,915
2028	25,549
2029	25,183
2030	24,822
2031	24,397
Thereafter	110,540
Net Carrying Amount	$ 236,406

Pay vs Performance Disclosure - USD ($) $ in Thousands	12 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Pay vs Performance Disclosure
Net Income (Loss)	$ (14,897)	$ (73,010)	$ 152,697

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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+ Details

Restructurings

12 Months Ended

Mar. 27, 2026

Restructuring and Related Activities [Abstract]

Restructurings

20.

Restructurings

January 2025 Restructuring

In January 2025, management committed to a plan that included repositioning to high-growth and lower cost regions and further consolidation of leased facilities in an effort to optimize its cost structure (the “January 2025 Restructuring”). In connection with the plan, the Company incurred $3,085 and $5,760 of total charges for the fiscal years ended March 27, 2026 and
March 28, 2025, respectively. The Company incurred $1,562 and $5,121 related to employee severance and other employee-related benefit charges for the fiscal years ended March 27, 2026 and March 28, 2025, respectively. The Company does not expect to incur additional material charges related to the January 2025 Restructuring.

The following table presents restructuring, exit costs and other charges, net as included in the Company’s consolidated statement of operations for the fiscal years ended March 27, 2026 and March 28, 2025 related to the January 2025 Restructuring.


	Fiscal Year Ended
	March 27, 2026		March 28, 2025
Cost of goods sold	$	301	$	1,365
Research and development		1,801		2,585
Selling, general and administrative		983		1,810
	$	3,085	$	5,760

A summary of changes in the Company’s accrual for employee severance and related expenses related to the January 2025 Restructuring was as follows:


	Severance
Balance as of March 29, 2024	$	—
Costs incurred		5,121
Cash disbursements		(3,910	)
Other		436
Balance as of March 28, 2025	$	1,647
Costs incurred		1,562
Cash disbursements		(5,114	)
Other		2,067
Balance as of March 27, 2026	$	162

June 2025 Restructuring

In June 2025, the Company further consolidated leased facilities and optimized its cost structure through repositioning its workforce to high-growth markets and rebalancing its workforce to lower cost markets (the “June 2025 Restructuring”). In connection with the plan, the Company incurred $10,274 of total charges for the fiscal years ended March 27, 2026 of which $4,826 related to employee severance and other employee-related benefit charges, and $5,027 related to real estate actions. The Company does not expect to incur additional material charges related to the June 2025 Restructuring.

The following table presents restructuring, exit costs and other charges, net as included in the Company’s consolidated statement of operations for the fiscal year ended March 27, 2026 related to the June 2025 Restructuring.


	Fiscal Year Ended
	March 27, 2026
Cost of goods sold	$	1,559
Research and development		2,931
Selling, general and administrative		5,784
	$	10,274

A summary of changes in the Company’s accrual for employee severance and related expenses related to the June 2025 Restructuring was as follows:


	Severance
Balance as of March 28, 2025	$	—
Costs incurred		4,826
Cash disbursements		(2,726	)
Other		(283	)
Balance as of March 27, 2026	$	1,817

Property, Plant and Equipment, Net (Tables)

12 Months Ended

Mar. 27, 2026

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant, and Equipment

Estimated useful lives of the respective property, plant and equipment assets are as follows:


Asset		Useful Life
Buildings		31 years
Buildings improvements		Economic life of the building improvements
Leasehold improvements		The shorter of the remaining term of the lease or estimated useful life
Machinery and equipment		3 - 10 years
Office Equipment		3 - 7 years

Property, plant and equipment, net is stated at cost, and consisted of the following:


	March 27, 2026			March 28, 2025
Land	$	26,549		$	25,175
Buildings, building improvements and leasehold improvements		63,929			66,258
Machinery and equipment		710,678			670,902
Office equipment		7,243			6,677
Right-of-use asset		8,797			8,182
Construction in progress		51,910			51,580
Total		869,106			828,774
Less: accumulated depreciation		(560,848	)		(525,855	)
Total	$	308,258		$	302,919

Schedule of Long-lived Assets

The geographic locations of the Company’s property, plant and equipment, net, which includes the finance lease right-of-use asset, based on physical location of the assets, and as of March 27, 2026 and March 28, 2025 are as follows:


	March 27, 2026		March 28, 2025
United States	$	37,593	$	35,301
Philippines		228,664		227,038
Other		42,001		40,580
Total	$	308,258	$	302,919

Debt and Other Borrowings (Tables)

12 Months Ended

Mar. 27, 2026

Debt Disclosure [Abstract]

Schedule of Debt Obligations

The Company’s debt obligations consisted of the following:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025
Term Loan Facility	$	285,000		$	345,000
Unamortized debt issuance costs		(4,116	)		(6,071	)
Total loans outstanding		280,884			338,929
Finance lease liabilities		6,392			7,197
Total debt		287,276			346,126
Current portion of long-term debt and finance lease liabilities		(1,530	)		(1,423	)
Total long-term debt and finance lease liabilities, less current portion	$	285,746		$	344,703

- Definition

Tabular disclosure of long-debt instruments or arrangements, including identification, terms, features, collateral requirements and other information necessary to a fair presentation. These are debt arrangements that originally required repayment more than twelve months after issuance or greater than the normal operating cycle of the entity, if longer.

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+ Details

Net (Loss) Income per Share

12 Months Ended

Mar. 27, 2026

Earnings Per Share [Abstract]

Net (Loss) Income per Share

17.

Net (Loss) Income per Share

The following table sets forth the basic and diluted net (loss) income attributable to Allegro MicroSystems, Inc. per share.


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Net (loss) income attributable to Allegro MicroSystems, Inc.	$	(14,897	)	$	(73,010	)	$	152,697

Basic weighted average common shares		185,035,670			187,707,391			192,573,169
Dilutive effect of common stock equivalents		—			—			2,101,183
Diluted weighted average common shares		185,035,670			187,707,391			194,674,352

Basic net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders	$	(0.08	)	$	(0.39	)	$	0.79

Diluted net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders	$	(0.08	)	$	(0.39	)	$	0.78

The computed net (loss) income per share for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024 does not assume conversion of securities that would have an antidilutive effect on net (loss) income per share. The following represents contingently issuable shares under the restricted stock units (“RSUs”) and performance-based restricted stock units (“PSUs”) excluded from the computation of net (loss) income per share, as such securities would have an antidilutive effect on net (loss) income per share if the Company had reported net income for the respective periods:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
RSUs		11,940		451,087		40,257
PSUs		21,248		91,210		129,837

The following table represents issued and issuable weighted average share information underlying our outstanding RSUs, PSUs and participation in our employee stock purchase plan (“ESPP”) for the respective period:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
RSUs		—		—		888,811
PSUs		—		—		1,210,124
ESPP		—		—		2,248
Total		—		—		2,101,183

Retirement Plans - Schedule of Expense Related to Defined Benefit Plan (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1,468	$ 1,456	$ 1,345
Interest cost	1,042	939	907
Expected return on plan assets	(487)	(446)	(468)
Amortization of prior service cost	(8)	(8)	(8)
Actuarial loss	41	71	33
Net periodic pension expense	$ 2,056	$ 2,012	$ 1,809

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details

Business Combinations - Summary of Preliminary Price Allocation (Details) - USD ($) $ in Thousands	Sep. 11, 2023	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Goodwill		$ 203,291	$ 202,475	$ 202,425
Crocus
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Total purchase consideration	$ 411,772
Cash	4,155
Inventories	4,208
Accounts receivable	484
Prepaid expenses and other current assets	2,400
Property, plant and equipment	7,606
Right-of-use asset	9,770
Other assets	226
Total identifiable assets acquired	274,849
Accounts payable	(5,317)
Accrued expenses and other current liabilities	(2,442)
Long-term debt	(842)
Lease liability	(10,390)
Other long-term liabilities	(2,813)
Deferred income tax liabilities	(15,889)
Total identifiable net assets	237,156
Goodwill	174,616
Completed technology \| Crocus
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets	234,000
Customer relationships \| Crocus
Business Combination, Recognized Identifiable Assets Acquired, Goodwill, and Liabilities Assumed, Net [Abstract]
Intangible assets	$ 12,000

Revenue from Contracts with Customers - Additional Information (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Revenue from Contract with Customer [Abstract]
Trade accounts receivable, returns, credits issued, and price protection adjustments, current	$ 48,616	$ 33,855

Leases

12 Months Ended

Mar. 27, 2026

Leases [Abstract]

Leases

12.

Leases

The Company leases real estate, equipment and vehicles under operating lease agreements that have initial terms ranging from one to 13 years. Some leases include one or more options to exercise renewal terms, generally at the Company’s sole discretion, that can extend the lease term. Certain leases contain rights to terminate whereby those termination options are held by either the Company, the lessor, or both parties. These options to extend or terminate a lease are included in the lease term only when it is reasonably certain that the Company will exercise that option. The Company’s leases generally do not contain any material restrictive covenants.

Operating lease cost is recognized on a straight-line basis over the lease term, while finance lease cost is amortized over the expected term on a straight-line basis. Information regarding the Company’s operating and finance leases are as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Operating leases
Operating lease expense	$	10,606		$	7,695		$	6,369
Short term lease expense		274			301			39
Other information:
Cash paid for operating leases	$	6,995		$	7,064		$	6,305
Weighted-average remaining lease term - operating leases	5.1 years			5.3 years			4.4 years
Weighted-average discount rate – operating leases		7.1	%		6.5	%		6.1	%


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Finance leases
Amortization of right-of-use assets	$	1,392		$	1,397		$	581
Interest on lease liabilities		276			246			29
Weighted-average remaining lease term - finance leases	3.6 years			4.6 years			5.6 years
Weighted-average discount rate - finance leases		7.7	%		7.7	%		7.7	%

Finance leases are recorded in the following line items within the consolidated balance sheets:


	March 27, 2026		March 28, 2025
Property, plant and equipment, net	$	5,279	$	6,206
Current portion of long-term debt		1,530		1,423
Long-term debt		4,862		5,774

As of March 27, 2026, future minimum lease payments under operating and finance leases are as follows:


	Operating Leases			Finance Leases
2027	$	6,826		$	1,912
2028		5,372			1,912
2029		3,126			1,912
2030		2,034			1,702
2031		1,094			—
Thereafter		4,129			—
Total lease payments	$	22,581		$	7,438
Less: imputed interest		(3,945	)		(1,046	)
Total lease liabilities	$	18,636		$	6,392

Retirement Plans - Schedule of Weighted-Average Assumptions (Details) - Pension Plan	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Defined Benefit Plan Disclosure [Line Items]
Non-U.S. assumed discount rate	7.27%	6.33%
Non-U.S. rate of compensation increases	5.50%	5.50%
Non-U.S. assumed discount rate	7.27%	6.33%	6.21%
Non-U.S. expected long-term return on plan assets	5.44%	5.45%	5.54%
Non-U.S. rate of compensation increases	5.50%	5.50%	5.50%

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Trade Accounts Receivable, Net (Tables)

12 Months Ended

Mar. 27, 2026

Receivables [Abstract]

Schedule of Trade Accounts Receivable, Net

Trade accounts receivable, net consisted of the following:


	March 27, 2026			March 28, 2025
Trade accounts receivable	$	141,864		$	119,071
Less:
Provision for expected credit losses		—			(618	)
Returns and sales allowances		(48,616	)		(33,855	)
Total	$	93,248		$	84,598

Revenue from Contracts with Customers - Net Sales by Product (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Disaggregation of Revenue [Line Items]
Total net sales	$ 890,096	$ 725,006	$ 1,049,367
Magnetic sensors
Disaggregation of Revenue [Line Items]
Total net sales	538,538	474,557	649,869
Power integrated circuits
Disaggregation of Revenue [Line Items]
Total net sales	$ 351,558	$ 250,449	$ 399,498

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Stock-Based Compensation (Tables)

12 Months Ended

Mar. 27, 2026

Share-Based Payment Arrangement [Abstract]

Schedule of Restricted Stock Units Activity

The following table summarizes RSU activity for the fiscal year ended March 27, 2026:


	Number of Shares			Weighted-Average Grant-Date Fair Value		Weighted-Average Remaining Contractual Life (In years)		Aggregate Intrinsic Value
Outstanding - March 28, 2025		2,330,344		$	28.88		0.95	$	57,932
Granted		2,080,783			27.29
Issued		(1,109,483	)		28.98
Forfeited		(209,201	)		28.09
Outstanding - March 27, 2026		3,092,443		$	27.83		0.92	$	93,144

Schedule of Performance Units Fair Value Assumptions

The weighted-average fair value of the PSUs granted during the year was determined using the Monte Carlo simulation model incorporating the following weighted-average assumptions:


	Fiscal Year Ended
	March 27, 2026	March 28, 2025	March 29, 2024
Performance term	2.88 years	2.79 years	2.87 years
Volatility	51.13%	43.46%	47.70%
Risk-free rate of return	3.91%	4.57%	3.68%
Dividend yield	—%	—%	—%
Weighted-average fair value per share	$29.57	$31.83	$43.83

Summary of Performance Stock Units Activity

The following table summarizes PSU activity for the fiscal year ended March 27, 2026:


	Number of Shares			Weighted-Average Grant-Date Fair Value		Weighted-Average Remaining Contractual Life (In years)		Aggregate Intrinsic Value
Outstanding - March 28, 2025		2,145,781		$	24.86		1.80	$	53,344
Granted		533,437			29.44
Cancelled		(153,650	)		24.32
Issued		(231,653	)		27.80
Forfeited		(958,266	)		22.54
Outstanding - March 27, 2026		1,335,649		$	27.90		1.48	$	40,230

Schedule of ESPP Fair Value Assumptions

The weighted-average fair value of the ESPP shares was determined using the Black-Scholes model incorporating the following weighted-average assumptions:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Expected performance term	0.50 years			0.50 years			0.50 years
Volatility		53.93	%		45.44	%		40.97	%
Risk-free rate of return		3.87	%		4.70	%		5.35	%
Dividend yield		—	%		—	%		—	%
Weighted-average fair value per share	$	9.34		$	7.07		$	9.51

Schedule of Stock-Based Compensation Expense

The Company recorded stock-based compensation expense on its consolidated statements of operations as follows:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
RSUs	$	41,309	$	32,144	$	28,162
PSUs		5,120		8,561		12,825
ESPP		1,384		1,099		1,438
Other		97		64		32
Total	$	47,910	$	41,868	$	42,457


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Cost of sales	$	3,955		$	2,877		$	5,359
Research and development		15,799			14,624			13,894
Selling, general and administrative		28,156			24,367			23,204
Stock-based compensation expense		47,910			41,868			42,457
Income tax benefit		(5,074	)		(4,049	)		(4,379	)
Total stock-based compensation expense, net of taxes	$	42,836		$	37,819		$	38,078

Fair Value Measurements

12 Months Ended

Mar. 27, 2026

Fair Value Disclosures [Abstract]

Fair Value Measurements

The following tables present information about the Company’s financial assets and liabilities as of March 27, 2026 and
March 28, 2025 measured at fair value on a recurring basis:


	Fair Value Measurement at March 27, 2026:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market fund deposits	$	42,173	$	—	$	—	$	42,173
Restricted cash:
Money market fund deposits		6,604		—		—		6,604
Other long-term assets:
Investment in debt security		—		—		3,477		3,477
Total assets	$	48,777	$	—	$	3,477	$	52,254


	Fair Value Measurement at March 28, 2025:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market fund deposits	$	30,814	$	—	$	—	$	30,814
Restricted cash:
Money market fund deposits		9,773		—		—		9,773
Total assets	$	40,587	$	—	$	—	$	40,587

Financial assets measured at fair value on a recurring basis also consist of assets within the Company’s non-U.S. defined benefit plan assets. Fair value information for those assets, including their classification in the fair value hierarchy, is included in Note 15, “Retirement Plans.”

During the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, there were no transfers of financial assets or liabilities between Level 1, Level 2 and Level 3.

As of March 27, 2026 and March 28, 2025, the fair value of the Company’s long-term debt was $283,575 and $343,275, respectively. The fair value was determined based on the quoted price of the debt in an inactive market on the last trading date of the reporting period, and has been classified as Level 2 within the fair value hierarchy.

As of March 27, 2026, the Company held an investment in debt security with a fair value of $3,477, which is classified as Level 3 within the fair value hierarchy. Given the immateriality of this investment to the Company’s consolidated financial position and results of operations, the quantitative disclosure of significant unobservable inputs otherwise required are not presented.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (bbb)(1)
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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-Section 55
-Paragraph 107
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-107

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
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-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Section 50
-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2E

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
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-Paragraph 6A
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Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6A
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-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Section 50
-Paragraph 6A
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-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-6A

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Accrued Expenses and Other Current Liabilities (Tables)

12 Months Ended

Mar. 27, 2026

Payables and Accruals [Abstract]

Schedule of Accrued Expenses and Other Current Liabilities

The composition of accrued expenses and other current liabilities was as follows:


	March 27, 2026		March 28, 2025
Accrued incentive programs	$	44,098	$	11,368
Accrued salaries, wages and retirement benefits		18,582		19,555
Accrued professional fees		4,601		6,132
Accrued income taxes		3,946		233
Accrued vacation		3,596		3,566
Accrued warranty costs		3,193		1,026
Accrued severance		1,981		2,336
Accrued interest		1,515		2,025
Accrued contingent consideration		—		5,000
Other		7,960		8,842
Total	$	89,472	$	60,083

Summary of Significant Accounting Policies - Concentrations of Credit Risk and Significant Customers - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Concentration Risk [Line Items]
Net sales	$ 890,096,000	$ 725,006,000	$ 1,049,367,000
Greater China
Concentration Risk [Line Items]
Net sales	249,417,000	183,033,000	274,851,000
Japan
Concentration Risk [Line Items]
Net sales	150,946,000	153,842,000	175,713,000
Taiwan
Concentration Risk [Line Items]
Net sales	89,038
South Korea
Concentration Risk [Line Items]
Net sales	$ 77,976,000	$ 73,702,000	$ 113,877,000
Revenue Benchmark \| Customer Concentration Risk \| Sanken Electric Co., Ltd.
Concentration Risk [Line Items]
Concentration risk, percentage			0.60%
Revenue Benchmark \| Customer Concentration Risk \| Largest Distributor
Concentration Risk [Line Items]
Concentration risk, percentage	9.40%	9.30%	10.20%
Revenue Benchmark \| Geographic Concentration Risk \| Non-US
Concentration Risk [Line Items]
Concentration risk, percentage	89.70%	87.20%	85.80%
Revenue Benchmark \| Geographic Concentration Risk \| Greater China
Concentration Risk [Line Items]
Concentration risk, percentage	28.00%	25.20%	26.20%
Revenue Benchmark \| Geographic Concentration Risk \| Japan
Concentration Risk [Line Items]
Concentration risk, percentage	17.00%	21.20%	16.70%
Revenue Benchmark \| Geographic Concentration Risk \| Taiwan
Concentration Risk [Line Items]
Concentration risk, percentage	10.00%
Revenue Benchmark \| Geographic Concentration Risk \| South Korea
Concentration Risk [Line Items]
Concentration risk, percentage		10.20%	10.90%

Summary of Significant Accounting Policies - Business Segment Information - Additional Information (Details)	12 Months Ended
	Mar. 27, 2026 Segment
Accounting Policies [Abstract]
Number of operating segments	1
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	The CODM uses consolidated net income or loss, as reported in the Consolidated Statement of Operations, as the profitability measure in making decisions. The measure of segment assets is reported on the balance sheet as total assets. Throughout the year, the CODM allocates capital resources on a project-by-project basis across the Company’s entire asset base to maximize profitability without regard to a legal entity or end market basis.

Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands		12 Months Ended
	Nov. 02, 2020 shares	Mar. 27, 2026 USD ($) $ / shares shares	Mar. 28, 2025 USD ($) $ / shares shares	Mar. 29, 2024 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Defined contribution plan, age		62 years
Years of service		5 years
Common stock, shares outstanding (in shares) \| shares		185,357,343	184,286,567
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period		3 years
Grant date fair value (in dollars per share) \| $ / shares		$ 27.29	$ 27.54	$ 36.14
Fair value vested		$ 32,156	$ 30,072	$ 23,032
Stock-based compensation expense not yet recorded		$ 52,736
Weighted average useful life		1 year 10 months 24 days
Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant date fair value (in dollars per share) \| $ / shares		$ 29.44
Fair value vested		$ 6,439	$ 15,615	$ 22,777
Stock-based compensation expense not yet recorded		$ 12,109
Weighted average useful life		2 years
Performance Stock Units (PSUs) \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant percentage of target shares granted		0
Inclusion percentage of target goals		0.00%
Performance Stock Units (PSUs) \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grant percentage of target shares granted		2
Inclusion percentage of target goals		200.00%
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock reserved for future issuance (in shares) \| shares	4,323,711
Purchase price of common stock, percentage of fair market value	85.00%
Offering period	6 months

Summary of Significant Accounting Policies - Product Warranties - Additional Information (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Accounting Policies [Abstract]
Accrued warranty reserves	$ 3,193	$ 1,026

Restructurings (Tables)

12 Months Ended

Mar. 27, 2026

January 2025 Restructuring

Restructuring Cost and Reserve [Line Items]

Summary of Severance, Exit Costs, and Other Charges, Net


	Fiscal Year Ended
	March 27, 2026		March 28, 2025
Cost of goods sold	$	301	$	1,365
Research and development		1,801		2,585
Selling, general and administrative		983		1,810
	$	3,085	$	5,760

Summary of Changes in Accrual for Employee Severance and Related Expenses

A summary of changes in the Company’s accrual for employee severance and related expenses related to the January 2025 Restructuring was as follows:


	Severance
Balance as of March 29, 2024	$	—
Costs incurred		5,121
Cash disbursements		(3,910	)
Other		436
Balance as of March 28, 2025	$	1,647
Costs incurred		1,562
Cash disbursements		(5,114	)
Other		2,067
Balance as of March 27, 2026	$	162

June 2025 Restructuring

Restructuring Cost and Reserve [Line Items]

Summary of Severance, Exit Costs, and Other Charges, Net


	Fiscal Year Ended
	March 27, 2026
Cost of goods sold	$	1,559
Research and development		2,931
Selling, general and administrative		5,784
	$	10,274

Summary of Changes in Accrual for Employee Severance and Related Expenses

A summary of changes in the Company’s accrual for employee severance and related expenses related to the June 2025 Restructuring was as follows:


	Severance
Balance as of March 28, 2025	$	—
Costs incurred		4,826
Cash disbursements		(2,726	)
Other		(283	)
Balance as of March 27, 2026	$	1,817

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Revenue from Contracts with Customers

12 Months Ended

Mar. 27, 2026

Revenue from Contract with Customer [Abstract]

Revenue from Contracts with Customers

The following tables summarize net sales disaggregated by market, by product and by geography for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024. The categorization of net sales by market is determined using various characteristics of the product and the application into which the Company’s product will be incorporated. The categorization of net sales by geography is determined based on the location to which the products are shipped.

Net sales by market:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
Automotive	$	628,561	$	535,205	$	759,454
Industrial and other		261,535		189,801		289,913
Total net sales	$	890,096	$	725,006	$	1,049,367

Net sales by product:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
Magnetic sensors	$	538,538	$	474,557	$	649,869
Power integrated circuits		351,558		250,449		399,498
Total net sales	$	890,096	$	725,006	$	1,049,367

Net sales by geography:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
Americas:
United States	$	91,412	$	92,458	$	149,283
Other Americas		41,778		24,851		32,119
EMEA:
Europe		120,562		106,726		176,628
Asia:
Greater China		249,417		183,033		274,851
Japan		150,946		153,842		175,713
South Korea		77,976		73,702		113,877
Other Asia		158,005		90,394		126,896
Total net sales	$	890,096	$	725,006	$	1,049,367

The Company recognizes sales net of returns and sales allowances, which include credits issued, price protection adjustments and stock rotation rights. As of March 27, 2026 and March 28, 2025, the obligation associated with returns and sales allowances, was $48,616 and $33,855, respectively, and was netted against trade accounts receivable in the consolidated balance sheets.

Unsatisfied performance obligations primarily represent contracts for products with future delivery dates. The Company elected not to disclose the amount of unsatisfied performance obligations as these contracts have original expected durations of less than one year.

- Definition

The entire disclosure of revenue from contract with customer to transfer good or service and to transfer nonfinancial asset. Includes, but is not limited to, disaggregation of revenue, credit loss recognized from contract with customer, judgment and change in judgment related to contract with customer, and asset recognized from cost incurred to obtain or fulfill contract with customer. Excludes insurance and lease contracts.

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+ Details

Retirement Plans - Schedule of Changes in Benefit Obligations and Plan Assets (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Obligation and funded status of plan:
Benefit obligation at beginning of year	$ 17,299	$ 16,194
Service cost	1,468	1,456	$ 1,345
Interest cost	1,042	939	907
Benefits paid	(695)	(892)
Actuarial (gain) loss	(1,294)	11
Foreign currency exchange rate changes	(688)	(409)
Benefit obligation at end of year	17,132	17,299	16,194
Change in plan assets:
Fair value of plan assets at beginning of year	8,432	7,665
Actual return on plan assets	608	597
Employer contributions	1,532	1,122
Benefits paid	(582)	(758)
Foreign currency exchange rate changes	(386)	(194)
Fair value of plan assets at end of year	9,604	8,432	$ 7,665
Underfunded status at end of year	$ (7,528)	$ (8,867)

Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Mar. 27, 2026	May 18, 2026	Sep. 26, 2025
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Mar. 27, 2026
Current Fiscal Year End Date	--03-27
Document Transition Report	false
Entity File Number	001-39675
Entity Registrant Name	ALLEGRO MICROSYSTEMS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-2405937
Entity Address, Address Line One	955 Perimeter Road
Entity Address, City or Town	Manchester
Entity Address, State or Province	NH
Entity Address, Postal Zip Code	03103
City Area Code	603
Local Phone Number	626-2300
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	ALGM
Security Exchange Name	NASDAQ
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 3,703,521,114
Entity Common Stock, Shares Outstanding (in shares)		186,222,406
Documents Incorporated by Reference	Portions of the registrant’s proxy statement for its 2026 Annual Meeting of Stockholders to be filed pursuant to Regulation 14A within 120 days of the end of the registrant’s fiscal year ended March 27, 2026 are incorporated by reference into Part III of this Annual Report on Form 10-K to the extent stated herein.
Entity Central Index Key	0000866291
Amendment Flag	false
Document Fiscal Year Focus	2026
Document Fiscal Period Focus	FY
Document Financial Statement Error Correction [Flag]	false
Auditor Name	PricewaterhouseCoopers LLP
Auditor Firm ID	238
Auditor Location	Boston, Massachusetts
Auditor Opinion	Opinions on the Financial Statements and Internal Control over Financial Reporting We have audited the accompanying consolidated balance sheets of Allegro MicroSystems, Inc. and its subsidiaries (the “Company”) as of March 27, 2026 and March 28, 2025, and the related consolidated statements of operations, of comprehensive (loss) income, of changes in stockholders’ equity and of cash flows for each of the three years in the period ended March 27, 2026, including the related notes (collectively referred to as the “consolidated financial statements”). We also have audited the Company’s internal control over financial reporting as of March 27, 2026, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of March 27, 2026 and March 28, 2025, and the results of its operations and its cash flows for each of the three years in the period ended March 27, 2026 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of March 27, 2026, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO.

Net (Loss) Income per Share - Schedule of Computation of Net (Loss) Income per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Earnings Per Share [Abstract]
Net (loss) attributable to Allegro MicroSystems, Inc.	$ (14,897)	$ (73,010)	$ 152,697
Basic weighted average common shares (in shares)	185,035,670	187,707,391	192,573,169
Dilutive effect of common stock equivalents (in shares)	0	0	2,101,183
Diluted weighted average common shares (in shares)	185,035,670	187,707,391	194,674,352
Basic net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders	$ (0.08)	$ (0.39)	$ 0.79
Diluted net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders	$ (0.08)	$ (0.39)	$ 0.78

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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-URI https://asc.fasb.org/1943274/2147483443/250-10-50-7

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-2

Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 60B
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-60B

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(25))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2

Reference 21: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(27))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Reference 22: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 220
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(23))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

Reference 23: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482689/260-10-45-7

Reference 24: http://www.xbrl.org/2003/role/disclosureRef
-Topic 470
-SubTopic 20
-Name Accounting Standards Codification
-Section 65
-Paragraph 4
-Subparagraph (f)(4)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481538/470-20-65-4

+ Details

- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

+ References

+ Details

Net (Loss) Income per Share (Tables)

12 Months Ended

Mar. 27, 2026

Earnings Per Share [Abstract]

Schedule of Computation of Net (Loss) Income per Share and Unaudited Pro Forma Net Income per Share

The following table sets forth the basic and diluted net (loss) income attributable to Allegro MicroSystems, Inc. per share.


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Net (loss) income attributable to Allegro MicroSystems, Inc.	$	(14,897	)	$	(73,010	)	$	152,697

Basic weighted average common shares		185,035,670			187,707,391			192,573,169
Dilutive effect of common stock equivalents		—			—			2,101,183
Diluted weighted average common shares		185,035,670			187,707,391			194,674,352

Basic net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders	$	(0.08	)	$	(0.39	)	$	0.79

Diluted net (loss) income per common share attributable to Allegro MicroSystems, Inc. stockholders	$	(0.08	)	$	(0.39	)	$	0.78

Schedule of Anti Dilutive Securities Excluded


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
RSUs		11,940		451,087		40,257
PSUs		21,248		91,210		129,837

Schedule of Issuable Weighted Average Share Information


	Fiscal Year Ended
	March 27, 2026		March 28, 2025		March 29, 2024
RSUs		—		—		888,811
PSUs		—		—		1,210,124
ESPP		—		—		2,248
Total		—		—		2,101,183

Inventories

12 Months Ended

Mar. 27, 2026

Inventory Disclosure [Abstract]

Inventories

Inventories include materials, labor and overhead and consisted of the following:


	March 27, 2026		March 28, 2025
Raw materials and supplies	$	10,323	$	7,354
Work in process		133,585		127,651
Finished goods		37,844		48,909
Total	$	181,752	$	183,914

The Company recorded inventory provisions totaling $8,426, $8,537 and $9,055 for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, respectively.

Leases - Additional Information (Details)	12 Months Ended
Leases - Additional Information (Details)	Mar. 27, 2026
Lessee, Lease, Description [Line Items]
Lessee, Operating Lease, Existence of Option to Extend [true false]	true
Lessee, Operating Lease, Existence of Option to Terminate [true false]	true
Minimum
Lessee, Lease, Description [Line Items]
Operating lease agreement term	1 year
Maximum
Lessee, Lease, Description [Line Items]
Operating lease agreement term	13 years

Income Taxes (Tables)

12 Months Ended

Mar. 27, 2026

Income Tax Disclosure [Abstract]

Schedule of Components of (Loss) Income before Income Taxes

The components of (loss) income before income taxes include the following:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
(Loss) income before income taxes
Domestic operations	$	(28,405	)	$	(106,576	)	$	183,524
Foreign operations		13,504			20,880			11,273
Total	$	(14,901	)	$	(85,696	)	$	194,797

Schedule of Significant Components of Income Taxes (Benefit) Provision

Significant components of the income tax (benefit) provision are as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Current:
Federal	$	5,569		$	(2,047	)	$	16,086
State		650			325			1,319
Foreign		5,527			5,090			43,117
Total current		11,746			3,368			60,522
Deferred:
Federal		(10,406	)		(15,272	)		10,721
State		(140	)		(231	)		(131	)
Foreign		(1,448	)		(798	)		(29,203	)
Total deferred		(11,994	)		(16,301	)		(18,613	)
Total income tax (benefit) provision	$	(248	)	$	(12,933	)	$	41,909

Schedule of Income Taxes Reconciliation

As detailed in Note 2 “Summary of Significant Accounting Policies” the Company elected to prospectively adopt the guidance in ASU 2023-09. The following table is a reconciliation of the U.S. federal statutory income tax rate to the Company’s effective tax rate for the fiscal year ended March 27, 2026 in accordance with the guidance in ASU 2023-09:


	March 27, 2026
	$			%
U.S. federal statutory tax rate	$	(3,129	)		21.0	%
State and local income tax, net of federal income tax effect1		364			(2.4	)%
Foreign tax effects		1,714			(11.5	)%
Effect of cross-border tax laws:
Foreign-derived intangible income benefit		(3,903	)		26.2	%
Subpart F, GILTI and other inclusions, net of foreign tax credits		(122	)		0.8	%
Other		867			(5.8	)%
Tax credits
R&D credits		(2,179	)		14.6	%
Changes in valuation allowances		1,339			(9.0	)%
Nontaxable or nondeductible items:
Stock-based compensation		2,438			(16.4	)%
162(m) limitation		2,626			(17.6	)%
Other		173			(1.1	)%
Changes in unrecognized tax benefits		(436	)		2.9	%
Effective tax rate	$	(248	)		1.7	%

During the fiscal year ended March 27, 2026, New Hampshire state taxes made up the majority of this category.

The following table shows the difference between the income tax (benefit) provision at the statutory federal tax rate and the (benefit) provision for income taxes for the fiscal years ended March 28, 2025 and March 29, 2024, using the methodology in place prior to the adoption of ASU 2023-09:


	Fiscal Year Ended
	March 28, 2025			March 29, 2024
Income tax (benefit) provision at U.S. statutory rate	$	(17,996	)	$	40,907
State income taxes, net of federal benefit		266			1,106
Foreign derived intangible income		(2,037	)		(25,612	)
Research and development tax credit		(3,644	)		(6,188	)
Stock-based compensation		2,094			(956	)
Cumulative provision-to-return		(2,035	)		(1,147	)
Subpart F and GILTI, net of credits		640			(168	)
Provision for uncertain tax positions		(586	)		827
162(m) limitation		3,542			3,010
Foreign tax rate		(235	)		2,632
Transaction costs		91			1,848
BEAT alternative minimum tax		1,454			—
Entity restructuring		(1,188	)		25,921
Nondeductible - loss on forward repurchase contract		7,298			—
Refund interest and other		(597	)		(271	)
Total income tax (benefit) provision	$	(12,933	)	$	41,909

Schedule of Deferred Tax Assets and Liabilities

Deferred income taxes reflect the net tax effects of temporary differences between the carrying amounts of assets and liabilities for financial reporting purposes and the amounts used for income tax purposes. Significant components of the Company’s deferred tax assets and liabilities are as follows:


	March 27, 2026			March 28, 2025
Deferred income tax assets:
Capitalized research and development costs	$	92,034		$	87,759
Accrued bonuses, sales commissions and other compensation		10,456			6,502
Inventory and sales related		18,574			15,629
Stock-based compensation		4,651			3,780
Tax credits		3,290			3,154
Lease liabilities		3,960			2,442
Property, plant and equipment, net		1,923			1,918
Other accruals and reserves		1,359			3,753
NOL carryforwards		4,314			5,255
Equity method and other investments		1,352			—
Gross deferred income tax assets		141,913			130,192
Valuation allowance for deferred income tax assets		(5,779	)		(4,250	)
Total deferred income tax assets		136,134			125,942
Deferred income tax liabilities:
Equity method and other investments		—			(641	)
Intangibles assets, net		(38,349	)		(42,623	)
Property, plant and equipment, net		(15,099	)		(12,108	)
Right-of-use assets		(2,465	)		(2,042	)
Total deferred income tax liabilities		(55,913	)		(57,414	)
Net deferred income tax assets	$	80,221		$	68,528

Schedule of Unrecognized Tax Benefits Roll Forward


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Beginning balance	$	4,797		$	4,980		$	2,408
Gross increases - tax positions for prior periods		—			—			2,210
Gross increases - tax positions for current period		—			149			378
Gross decreases lapse of applicable statutes of limitations		(118	)		(332	)		(16	)
Ending balance	$	4,679		$	4,797		$	4,980

Accrued Expenses and Other Current Liabilities

12 Months Ended

Mar. 27, 2026

Payables and Accruals [Abstract]

Accrued Expenses and Other Current Liabilities

11.

Accrued Expenses and Other Current Liabilities

The composition of accrued expenses and other current liabilities was as follows:


	March 27, 2026		March 28, 2025
Accrued incentive programs	$	44,098	$	11,368
Accrued salaries, wages and retirement benefits		18,582		19,555
Accrued professional fees		4,601		6,132
Accrued income taxes		3,946		233
Accrued vacation		3,596		3,566
Accrued warranty costs		3,193		1,026
Accrued severance		1,981		2,336
Accrued interest		1,515		2,025
Accrued contingent consideration		—		5,000
Other		7,960		8,842
Total	$	89,472	$	60,083

Goodwill and Intangible Assets (Tables)

12 Months Ended

Mar. 27, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

The table below summarizes the changes in the carrying amount of goodwill as follows:


	Total
Balance at March 29, 2024	$	202,425
Adjustments		97
Foreign currency translation		(47	)
Balance at March 28, 2025	$	202,475
Foreign currency translation		816
Balance at March 27, 2026	$	203,291

Schedule of Intangible Assets, Net

Intangible assets, net were as follows:


	March 27, 2026
Description	Gross		Accumulated Amortization			Net Carrying Amount
Patents	$	53,126	$	(30,009	)	$	23,117
Customer relationships		15,187		(5,125	)		10,062
Completed technologies		255,618		(52,391	)		203,227
Indefinite-lived process technology and trademarks		2,269		—			2,269
Trademarks and other		93		(93	)		—
Total	$	326,293	$	(87,618	)	$	238,675


	March 28, 2025
Description	Gross		Accumulated Amortization			Net Carrying Amount
Patents	$	49,749	$	(25,710	)	$	24,039
Customer relationships		14,964		(4,102	)		10,862
Completed technologies		255,588		(30,648	)		224,940
Indefinite-lived process technology and trademarks		2,274		—			2,274
Trademarks and other		86		(86	)		—
Total	$	322,661	$	(60,546	)	$	262,115

Schedule of Annual Amortization Expense

As of March 27, 2026, amortization expense of intangible assets is expected to be as follows:


2027	$	25,915
2028		25,549
2029		25,183
2030		24,822
2031		24,397
Thereafter		110,540
Total	$	236,406

- Definition

Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 55
-Paragraph 24
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482548/350-20-55-24

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (h)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 5: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 7: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 8: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 9: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 10: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (g)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1

Reference 11: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-1A

Reference 12: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 350
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482573/350-20-50-2

+ Details

Income Taxes - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Beginning balance	$ 4,797	$ 4,980	$ 2,408
Gross increases - tax positions for prior periods	0	0	2,210
Gross increases - tax positions for current period	(0)	149	378
Gross decreases lapse of applicable statutes of limitations	(118)	(332)	(16)
Ending balance	$ 4,679	$ 4,797	$ 4,980

Income Taxes - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Income Taxes - Narrative (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024	Mar. 31, 2023
Income Tax Contingency [Line Items]
Capitalized research and development costs	$ 92,034	$ 87,759
Net capital losses	1,457
Deferred tax assets, equity method of accounting	1,352	0
Valuation allowance for deferred income tax assets	5,779	4,250
Deferred income tax, estimated rate benefit	11,468
Deferred income tax, estimated rate benefit current	7,375
Net income taxes refunded	27,081
Federal refund	30,889
Net foreign payments	3,324
Net state payments	484
Provision for uncertain tax positions	4,679	4,797	$ 4,980	$ 2,408
Unrecognized tax benefits, income tax penalties and interest expense	305	323	$ 826
Unrecognized tax benefits, income tax penalties and interest accrued	1,534	$ 1,230
Philippines
Income Tax Contingency [Line Items]
Net foreign payments	2,217
Research And Development
Income Tax Contingency [Line Items]
Tax credit carryforward	3,290
Domestic Tax Authority
Income Tax Contingency [Line Items]
Operating loss carryforwards	$ 2,857

Leases (Tables)

12 Months Ended

Mar. 27, 2026

Leases [Abstract]

Lease, Cost


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Operating leases
Operating lease expense	$	10,606		$	7,695		$	6,369
Short term lease expense		274			301			39
Other information:
Cash paid for operating leases	$	6,995		$	7,064		$	6,305
Weighted-average remaining lease term - operating leases	5.1 years			5.3 years			4.4 years
Weighted-average discount rate – operating leases		7.1	%		6.5	%		6.1	%


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Finance leases
Amortization of right-of-use assets	$	1,392		$	1,397		$	581
Interest on lease liabilities		276			246			29
Weighted-average remaining lease term - finance leases	3.6 years			4.6 years			5.6 years
Weighted-average discount rate - finance leases		7.7	%		7.7	%		7.7	%

Finance leases are recorded in the following line items within the consolidated balance sheets:


	March 27, 2026		March 28, 2025
Property, plant and equipment, net	$	5,279	$	6,206
Current portion of long-term debt		1,530		1,423
Long-term debt		4,862		5,774

Schedule of Future Minimum Lease Payments under Operating and Finance Leases

As of March 27, 2026, future minimum lease payments under operating and finance leases are as follows:


	Operating Leases			Finance Leases
2027	$	6,826		$	1,912
2028		5,372			1,912
2029		3,126			1,912
2030		2,034			1,702
2031		1,094			—
Thereafter		4,129			—
Total lease payments	$	22,581		$	7,438
Less: imputed interest		(3,945	)		(1,046	)
Total lease liabilities	$	18,636		$	6,392

Retirement Plans - Obligations and Asset Information for Defined Benefit Plans with Projected Benefit Obligation in Excess of Plan Assets (Details) - Pension Plan - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligations	$ 17,132	$ 17,299
Plan assets	9,604	8,432
Accumulated benefit obligations	$ 10,857	$ 10,509

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Property, Plant and Equipment, Net

12 Months Ended

Mar. 27, 2026

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment, Net

Property, plant and equipment, net is stated at cost, and consisted of the following:


	March 27, 2026			March 28, 2025
Land	$	26,549		$	25,175
Buildings, building improvements and leasehold improvements		63,929			66,258
Machinery and equipment		710,678			670,902
Office equipment		7,243			6,677
Right-of-use asset		8,797			8,182
Construction in progress		51,910			51,580
Total		869,106			828,774
Less: accumulated depreciation		(560,848	)		(525,855	)
Total	$	308,258		$	302,919

Total depreciation expense amounted to $39,337, $37,447 and $56,214 for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, respectively. Total amortization expense for the finance lease right-of-use asset, amounted to $1,392, $1,397 and $581 for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, respectively.

The Company continues to expand and optimize its global manufacturing capacities, such as by its expansion of operations at its Philippines location, and its acquisition of Crocus. Through its expansion efforts, newly acquired machinery and equipment and continuous maintenance and evaluation of on-hand equipment, the Company recognized advancements in equipment quality indicating increased estimated useful lives. During the first quarter of fiscal year 2025, following periodic review of the estimated useful lives of long-lived assets, the Company determined that the useful lives of its machinery and equipment should be increased. Effective March 30, 2024, the Company increased the useful lives of a significant portion of its machinery and equipment from seven years to ten years. For the fiscal year ended March 27, 2026, these changes decreased depreciation expense by $14,944, decreased the benefit for income taxes by $3,138 and decreased net loss by $11,806, or $0.06 per share.


	March 27, 2026		March 28, 2025
United States	$	37,593	$	35,301
Philippines		228,664		227,038
Other		42,001		40,580
Total	$	308,258	$	302,919

During the year ended March 28, 2025, the Company classified various units of machinery and equipment as held for sale, as management approved a plan in the fourth quarter of fiscal year 2025 to market these assets to third-party buyers. The planned disposal of these assets did not constitute a strategic shift in the Company’s operations and therefore did not meet the discontinued operations criteria. These assets were intended to be sold within one year of their designation as held for sale. Assets held for sale are measured at the lower of carrying value or the fair value less cost. As of March 27, 2026, no assets met the criteria of held for sale, and as of March 28, 2025, the value of these assets were measured at $16,508.

As of March 27, 2026, management identified various assets that no longer meet the held for sale classification criteria as management no longer has the intent to sell the assets as it was determined the assets would be needed to support production activities. Following the change in circumstances, assets no longer meeting the held for sale criteria were reclassified as held and used. These assets were measured at their unadjusted carrying value, less the cumulative depreciation that would have been recorded had the asset never been classified as held for sale. The total unadjusted carrying value of assets identified as no longer meeting the held for sale criteria was $9,751. The depreciation adjustment to the unadjusted carrying amount was immaterial.

As of March 27, 2026, the carrying value of the assets classified as held for sale was determined to be greater than their fair value, less costs to sell and, accordingly, the Company recorded a $6,590 impairment on assets held. The impairment charge was recorded to income from continuing operations and is separately disclosed in the Company’s consolidated statement of operations.

Income Taxes

12 Months Ended

Mar. 27, 2026

Income Tax Disclosure [Abstract]

Income Taxes

19.

Income Taxes

The components of (loss) income before income taxes include the following:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
(Loss) income before income taxes
Domestic operations	$	(28,405	)	$	(106,576	)	$	183,524
Foreign operations		13,504			20,880			11,273
Total	$	(14,901	)	$	(85,696	)	$	194,797

Significant components of the income tax (benefit) provision are as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Current:
Federal	$	5,569		$	(2,047	)	$	16,086
State		650			325			1,319
Foreign		5,527			5,090			43,117
Total current		11,746			3,368			60,522
Deferred:
Federal		(10,406	)		(15,272	)		10,721
State		(140	)		(231	)		(131	)
Foreign		(1,448	)		(798	)		(29,203	)
Total deferred		(11,994	)		(16,301	)		(18,613	)
Total income tax (benefit) provision	$	(248	)	$	(12,933	)	$	41,909


	March 27, 2026
	$			%
U.S. federal statutory tax rate	$	(3,129	)		21.0	%
State and local income tax, net of federal income tax effect1		364			(2.4	)%
Foreign tax effects		1,714			(11.5	)%
Effect of cross-border tax laws:
Foreign-derived intangible income benefit		(3,903	)		26.2	%
Subpart F, GILTI and other inclusions, net of foreign tax credits		(122	)		0.8	%
Other		867			(5.8	)%
Tax credits
R&D credits		(2,179	)		14.6	%
Changes in valuation allowances		1,339			(9.0	)%
Nontaxable or nondeductible items:
Stock-based compensation		2,438			(16.4	)%
162(m) limitation		2,626			(17.6	)%
Other		173			(1.1	)%
Changes in unrecognized tax benefits		(436	)		2.9	%
Effective tax rate	$	(248	)		1.7	%

During the fiscal year ended March 27, 2026, New Hampshire state taxes made up the majority of this category.


	Fiscal Year Ended
	March 28, 2025			March 29, 2024
Income tax (benefit) provision at U.S. statutory rate	$	(17,996	)	$	40,907
State income taxes, net of federal benefit		266			1,106
Foreign derived intangible income		(2,037	)		(25,612	)
Research and development tax credit		(3,644	)		(6,188	)
Stock-based compensation		2,094			(956	)
Cumulative provision-to-return		(2,035	)		(1,147	)
Subpart F and GILTI, net of credits		640			(168	)
Provision for uncertain tax positions		(586	)		827
162(m) limitation		3,542			3,010
Foreign tax rate		(235	)		2,632
Transaction costs		91			1,848
BEAT alternative minimum tax		1,454			—
Entity restructuring		(1,188	)		25,921
Nondeductible - loss on forward repurchase contract		7,298			—
Refund interest and other		(597	)		(271	)
Total income tax (benefit) provision	$	(12,933	)	$	41,909

Entity restructurings are the net tax effect of transactions undertaken to streamline business operations, including the termination of a related party distributor and worthless stock deductions for our photonics subsidiaries, which fully ceased operating during the fiscal year ended March 28, 2025. The March 29, 2024 entity restructuring relates to post-acquisition integrations to align business operations and integrate Crocus’s assets and workforce into the Company’s existing affiliates. The Company engaged in an intra-entity asset sale that resulted in a taxable gain reduced by net operating losses (“NOL”) in France and the generation and utilization of foreign tax credits in the U.S. Assets were transferred at fair market value pursuant to a valuation. The entity restructuring increased the effective tax rate primarily because a deferred tax liability was established on the difference between the fair market value and book value of Crocus’s intellectual property transferred to the U.S.


	March 27, 2026			March 28, 2025
Deferred income tax assets:
Capitalized research and development costs	$	92,034		$	87,759
Accrued bonuses, sales commissions and other compensation		10,456			6,502
Inventory and sales related		18,574			15,629
Stock-based compensation		4,651			3,780
Tax credits		3,290			3,154
Lease liabilities		3,960			2,442
Property, plant and equipment, net		1,923			1,918
Other accruals and reserves		1,359			3,753
NOL carryforwards		4,314			5,255
Equity method and other investments		1,352			—
Gross deferred income tax assets		141,913			130,192
Valuation allowance for deferred income tax assets		(5,779	)		(4,250	)
Total deferred income tax assets		136,134			125,942
Deferred income tax liabilities:
Equity method and other investments		—			(641	)
Intangibles assets, net		(38,349	)		(42,623	)
Property, plant and equipment, net		(15,099	)		(12,108	)
Right-of-use assets		(2,465	)		(2,042	)
Total deferred income tax liabilities		(55,913	)		(57,414	)
Net deferred income tax assets	$	80,221		$	68,528

The Tax Cuts and Jobs Act of 2017 (“TCJA”) required the capitalization and amortization of domestic and foreign research and development (“R&D”) expenditures over five and 15 years, respectively. On July 4, 2025, the OBBB was enacted and restored immediate expensing for domestic R&D and provided a one-time Accelerated R&D Amortization Election to deduct previously capitalized domestic R&D over two years. In addition, Section 59(e) of the Internal Revenue Code of 1986, as amended (the “IRC”), allows an annual election to capitalize and amortized domestic R&D expenditures over ten-years. The capitalized research and development costs deferred tax asset above represents the tax effect of the remaining cost to be amortized.

The Company acquired NOL and research and development tax credit (“R&D Credit”) carryforwards that are subject to limitations and valuation allowances. The IRC provides for a limitation of the annual use of NOLs, R&D Credits, and other tax attributes following certain ownership changes that limit the ability to utilize NOL and R&D Credit carryforwards. Under IRC Sections 382 and 383, an ownership change is generally defined as a greater than 50% change (by value) in its equity ownership over a three-year period.

NOLs and capital losses may be available to reduce future taxable income. As of March 27, 2026, the Company had net Federal NOLs of $2,857 that were generated after December 31, 2017, and therefore carryforward indefinitely. State NOL carryforwards have been fully utilized. As of March 27, 2026, the Company had deferred tax assets (“DTAs”) related to capital losses, equity method of accounting, and state R&D Credit carryforwards of $1,457, $1,352, and $3,290, respectively. The Company has established valuation allowances of $5,779 to fully offset the capital losses and equity method of accounts DTAs and most of the state R&D Credit.

As of March 27, 2026, the Company had net income taxes refunded for the year was $27,081, which consisted of a $30,889 federal refund offset by $3,324 in net foreign payments (including $2,217 paid to the Philippines) and $484 in net state payments.

The Company’s intent is to permanently reinvest and use its existing foreign cash to fund its subsidiaries’ working capital needs, short-term and long-term capital projects, and to make investments and acquisitions.

The Company filed carryback claims allowable under the Coronavirus Aid, Relief and Economic Security Act (“the CARES Act”) to utilize NOLs and carryover credits generated during fiscal year 2021. As of March 27, 2026, the Company has $11,468 tax receivables, primarily related to the CARES Act, of which $7,375 is classified as current.

Uncertain Tax Positions

As of March 27, 2026, March 28, 2025 and March 29, 2024, the Company had gross uncertain tax positions which would impact the effective tax rate, if recognized. These amounts are recorded as a long-term liability, as the Company does not anticipate payment within one year.


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Beginning balance	$	4,797		$	4,980		$	2,408
Gross increases - tax positions for prior periods		—			—			2,210
Gross increases - tax positions for current period		—			149			378
Gross decreases lapse of applicable statutes of limitations		(118	)		(332	)		(16	)
Ending balance	$	4,679		$	4,797		$	4,980

The Company believes that all tax positions are adequately provided for; amounts asserted by tax authorities could be greater or less than the accrued position. Accordingly, the Company’s provisions for federal, state and foreign tax related matters to be recorded in the future might change as revised estimates are made, or the underlying matters are settled or otherwise resolved.

The Company’s policy is to classify interest expense and penalties, if any, as components of the income tax (benefit) provision in the consolidated statements of operations. The Company recorded net increases of $305, $323 and $826 in interest, penalties and releases during fiscal years 2026, 2025 and 2024, respectively. As of March 27, 2026 and March 28, 2025, the amount of accrued interest and penalties totaled approximately $1,534 and $1,230, respectively.

Examinations by Tax Authorities

The Company and its subsidiaries are routinely subject to examination by taxing authorities in the United States and the foreign jurisdictions in which it does business. Currently, the Internal Revenue Service is auditing the CARES Act carryback claim for fiscal years 2016 through 2021, and the Bureau of Internal Revenue is auditing our Philippine subsidiary for tax year 2019. U.S. and material foreign jurisdictions statutes of limitation remain open as of 2016.

- Definition

The entire disclosure for income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477617/942-740-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 740
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478822/944-740-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 50
-Paragraph 12
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-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 5: http://www.xbrl.org/2003/role/exampleRef
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-Section 55
-Paragraph 231
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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+ Details

Retirement Plans - Schedule of Changes in Fair Value of Level 3 Plan Assets (Details) - Pension Plan - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	$ 8,432	$ 7,665
Change in foreign currency exchange rates	(386)	(194)
Fair value of plan assets at end of year	9,604	8,432
Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	1,501
Fair value of plan assets at end of year	1,700	1,501
Loans \| Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	654	574
Additions	558	475
Redemptions	(424)	(381)
Revaluation of debt and equity securities	(2)	0
Change in foreign currency exchange rates	(26)	(14)
Fair value of plan assets at end of year	760	654
Stocks \| Level 3
Defined Benefit Plan, Change in Fair Value of Plan Assets, Level 3 Reconciliation [Roll Forward]
Fair value of plan assets at beginning of year	847	909
Additions	0	0
Redemptions	0	0
Revaluation of debt and equity securities	126	(39)
Change in foreign currency exchange rates	(33)	(23)
Fair value of plan assets at end of year	$ 940	$ 847

Insider Trading Policies and Procedures	12 Months Ended
Insider Trading Policies and Procedures	Mar. 27, 2026
Insider Trading Policies and Procedures [Line Items]
Insider Trading Policies and Procedures Adopted	true

Revenue from Contracts with Customers - Net Sales by Geography (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Disaggregation of Revenue [Line Items]
Total net sales	$ 890,096	$ 725,006	$ 1,049,367
United States
Disaggregation of Revenue [Line Items]
Total net sales	91,412	92,458	149,283
Other Americas
Disaggregation of Revenue [Line Items]
Total net sales	41,778	24,851	32,119
Europe
Disaggregation of Revenue [Line Items]
Total net sales	120,562	106,726	176,628
Greater China
Disaggregation of Revenue [Line Items]
Total net sales	249,417	183,033	274,851
Japan
Disaggregation of Revenue [Line Items]
Total net sales	150,946	153,842	175,713
South Korea
Disaggregation of Revenue [Line Items]
Total net sales	77,976	73,702	113,877
Other Asia
Disaggregation of Revenue [Line Items]
Total net sales	$ 158,005	$ 90,394	$ 126,896

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Leases - Operating Lease (Details) - USD ($) $ in Thousands	12 Months Ended
Leases - Operating Lease (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Operating leases
Operating lease expense	$ 10,606	$ 7,695	$ 6,369
Short term lease expense	274	301	39
Other information:
Cash paid for operating leases	$ 6,995	$ 7,064	$ 6,305
Weighted-average remaining lease term – operating leases	5 years 1 month 6 days	5 years 3 months 18 days	4 years 4 months 24 days
Weighted-average discount rate – operating leases	7.10%	6.50%	6.10%

Debt and Other Borrowings - Schedule of Debt Obligations (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Debt Instrument [Line Items]
Unamortized debt issuance costs	$ (4,116)	$ (6,071)
Total loans outstanding	280,884	338,929
Finance lease liabilities	6,392	7,197
Total debt	287,276	346,126
Current portion of long-term debt and finance lease liabilities	(1,530)	(1,423)
Total long-term debt and finance lease liabilities, less current portion	285,746	344,703
Term Loan Facility
Debt Instrument [Line Items]
Total loans outstanding	$ 285,000	$ 345,000

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
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-Name Accounting Standards Codification
-Section 50
-Paragraph 8A
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Nature of the Business and Basis of Presentation (Details)	Mar. 27, 2026 Location Continent
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of locations \| Location	27
Number of continents on which entity operates \| Continent	4

Fair Value Measurements - Assets And Liabilities Measured At Fair Value (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 29, 2024
Assets:
Investment in debt security	$ 3,477
Fair Value, Recurring
Assets:
Investment in debt security	3,477
Total assets	52,254	$ 40,587
Level 1 \| Fair Value, Recurring
Assets:
Total assets	48,777	40,587
Level 3 \| Fair Value, Recurring
Assets:
Investment in debt security	3,477
Total assets	3,477
Money Market Funds \| Fair Value, Recurring
Assets:
Money market fund deposits	42,173	30,814
Money market fund deposits	6,604	9,773
Money Market Funds \| Level 1 \| Fair Value, Recurring
Assets:
Money market fund deposits	42,173	30,814
Money market fund deposits	$ 6,604	$ 9,773

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References + Details

Summary of Significant Accounting Policies - Non-controlling Interest - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Money Market Funds
Noncontrolling Interest [Line Items]
Unrealized gains on marketable securities	$ 0	$ 0	$ 0
Affiliated Entity in Philippines
Noncontrolling Interest [Line Items]
Ownership percentage by majority shareholder	40.00%
Noncontrolling interest ownership percentage	60.00%

Restructurings - Summary of Restructuring, Exit Costs, and Other Charges, Net Included in Statement of Operations (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025
January 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 3,085	$ 5,760
June 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	10,274
Cost of Goods Sold \| January 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	301	1,365
Cost of Goods Sold \| June 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1,559
Research and Development \| January 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	1,801	2,585
Research and Development \| June 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	2,931
Selling, General and Administrative \| January 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	983	$ 1,810
Selling, General and Administrative \| June 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 5,784

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Summary of Significant Accounting Policies - Property, Plant and Equipment (Details)	Mar. 27, 2026	Mar. 30, 2024
Minimum
Property, Plant and Equipment [Line Items]
Useful Life		7 years
Maximum
Property, Plant and Equipment [Line Items]
Useful Life		10 years
Buildings
Property, Plant and Equipment [Line Items]
Useful Life	31 years
Buildings improvements
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]	us-gaap:UsefulLifeTermOfLeaseMember
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration]	us-gaap:UsefulLifeShorterOfTermOfLeaseOrAssetUtilityMember
Machinery and equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Machinery and equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful Life	10 years
Office equipment \| Minimum
Property, Plant and Equipment [Line Items]
Useful Life	3 years
Office equipment \| Maximum
Property, Plant and Equipment [Line Items]
Useful Life	7 years

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Current assets:
Cash and cash equivalents	$ 168,753	$ 121,334
Restricted cash	6,604	9,773
Trade accounts receivable, net	93,248	84,598
Accounts receivable - other	21,735	2,559
Inventories	181,752	183,914
Prepaid income taxes	1,179	36,662
Prepaid expenses and other current assets	30,335	27,688
Assets held for sale	0	16,508
Total current assets	503,606	483,036
Property, plant and equipment, net	308,258	302,919
Operating lease right-of-use assets, net	13,587	20,849
Deferred income tax assets	80,221	68,528
Goodwill	203,291	202,475
Intangible assets, net	238,675	262,115
Equity investment in related party	22,296	31,695
Other assets	31,241	49,344
Total assets	1,416,175	1,420,961
Current liabilities:
Trade accounts payable	44,438	38,733
Accrued expenses and other current liabilities	89,472	60,083
Current portion of operating lease liabilities	5,691	5,487
Current portion of long-term debt	1,530	1,423
Total current liabilities	145,925	112,261
Long-term debt	285,746	344,703
Operating lease liabilities, less current portion	12,945	16,878
Other long-term liabilities	15,114	16,019
Total liabilities	459,730	489,861
Commitments and contingencies (Note 16)
Stockholders' Equity:
Preferred Stock, $0.01 par value; 20,000,000 shares authorized, no shares issued or outstanding at March 27, 2026 and March 28, 2025	0	0
Common stock, $0.01 par value; 1,000,000,000 shares authorized, 185,357,343 shares issued and outstanding at March 27, 2026; 1,000,000,000 shares authorized, 184,286,567 issued and outstanding at March 28, 2025	1,854	1,843
Additional paid-in capital	1,050,582	1,012,055
Accumulated deficit	(68,488)	(53,591)
Accumulated other comprehensive loss	(29,201)	(30,752)
Equity attributable to Allegro MicroSystems, Inc.	954,747	929,555
Non-controlling interest	1,698	1,545
Total stockholders' equity	956,445	931,100
Total liabilities, non-controlling interest and stockholders' equity	1,416,175	1,420,961
Related Party
Current assets:
Related party - other assets	15,000
Current liabilities:
Amounts due to related party	$ 4,794	$ 6,535

Summary of Significant Accounting Policies - Contract Assets and Contract Liabilities - Additional Information (Details) - USD ($)	Mar. 27, 2026	Mar. 28, 2025
Accounting Policies [Abstract]
Contract assets	$ 0	$ 0
Contract liabilities	$ 0	$ 0

Trade Accounts Receivable, Net - Summary of Trade Accounts Receivable (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Accounts, Notes, Loans and Financing Receivable [Line Items]
Trade accounts receivable	$ 141,864	$ 119,071
Less:
Provision for expected credit losses	0	(618)
Returns and sales allowances	(48,616)	(33,855)
Trade accounts receivable, net	$ 93,248	$ 84,598

Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Net sales	$ 890,096	$ 725,006	$ 1,049,367
Cost of goods sold	478,126	403,479	471,894
Cost of goods sold to related party	0	0	2,944
Gross profit	411,970	321,527	574,529
Operating expenses:
Research and development	205,804	179,649	176,638
Selling, general and administrative	181,089	161,680	188,429
Impairment of assets held for sale	6,590	0	0
Impairment of long-lived assets	0	0	13,218
Total operating expenses	393,483	341,329	378,285
Operating income (loss)	18,487	(19,802)	196,244
Other (expense) income:
Interest expense	(22,135)	(30,366)	(10,763)
Interest income	776	1,524	3,144
Foreign currency transaction (loss) gain	(3,209)	(2,172)	5,064
(Loss) income in earnings of equity investment	(9,399)	1,176	(538)
Loss on change in fair value of forward repurchase contract	0	(34,752)	0
Other income (expense), net	579	(1,304)	1,646
(Loss) income before income taxes	(14,901)	(85,696)	194,797
Income tax (benefit) provision	(248)	(12,933)	41,909
Net (loss) income	(14,653)	(72,763)	152,888
Net income attributable to non-controlling interests	244	247	191
Net (loss) income attributable to Allegro MicroSystems, Inc.	$ (14,897)	$ (73,010)	$ 152,697
Net (loss) income per common share attributable to Allegro MicroSystems, Inc.:
Basic (in dollars per share)	$ (0.08)	$ (0.39)	$ 0.79
Diluted (in dollars per share)	$ (0.08)	$ (0.39)	$ 0.78
Weighted average shares outstanding:
Basic (in shares)	185,035,670	187,707,391	192,573,169
Diluted (in shares)	185,035,670	187,707,391	194,674,352
Non-Related Party Revenue
Net sales	$ 890,096	$ 725,006	$ 1,043,206
Related Party Revenue
Net sales	$ 0	$ 0	$ 6,161

Business Combinations

12 Months Ended

Mar. 27, 2026

Business Combination [Abstract]

Business Combinations

Crocus

On August 7, 2023, the Company entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Crocus Technology International Corp., (“Crocus”). Pursuant to the terms and conditions of the Merger Agreement, on October 31, 2023 (the “Closing Date”), the Company acquired all of the outstanding equity interests of Crocus. The acquisition of Crocus complemented and accelerated the Company’s tunnel magnetoresistance sensors roadmap and strengthens its position in the magnetic sensing market.

Notes Receivable from Crocus

On September 11, 2023, to fund the ongoing operations of Crocus prior to the Closing Date, the Company entered into a note purchase agreement with Crocus, wherein the Company agreed to purchase promissory notes of up to $7,000. An initial promissory note of $4,000 was issued on September 11, 2023, and an additional promissory note was issued on October 2, 2023 for $3,000. The promissory notes were repaid in full in connection with the closing of the merger and included within the estimated fair value of consideration paid.

Allocation of Purchase Price

The acquisition of Crocus was accounted for as a business combination. The purchase price for the acquisition was allocated based upon a valuation of the fair values of assets acquired and liabilities assumed. Assets acquired and liabilities assumed were recorded at their estimated fair values as of the acquisition date. Management applied the multi-period excess earnings method under the income approach to estimate the fair value of the completed technology asset and the distributor method under the income approach to estimate the fair value of the customer relationships asset. The fair value of intangible assets was based on estimates and assumptions developed by management. The process for estimating the fair values of identifiable intangible assets required the use of significant estimates and assumptions, including estimating future cash flows relating to revenue growth rates, operating margins, discount rates, and technology obsolescence curves. The excess of the purchase price over the fair values of tangible assets, identifiable intangible assets and assumed liabilities were recorded as goodwill for the acquisition. The allocation of the purchase price was finalized as of March 28, 2025, and no material changes have been made to the preliminary purchase price allocation.

The final purchase price allocation is as follows:


Total purchase consideration	$	411,772
Cash		4,155
Inventories		4,208
Accounts receivable		484
Prepaid expenses and other current assets		2,400
Property, plant and equipment		7,606
Right-of-use asset*		9,770
Completed technology**		234,000
Customer relationships**		12,000
Other assets		226
Total identifiable assets acquired		274,849
Accounts payable		(5,317	)
Accrued expenses and other current liabilities		(2,442	)
Long-term debt		(842	)
Lease liability***		(10,390	)
Other long-term liabilities		(2,813	)
Deferred income tax liabilities		(15,889	)
Total identifiable net assets		237,156
Goodwill	$	174,616

*Primarily included in Property, plant and equipment, net in the consolidated balance sheets.

**Included in Intangible assets, net in the consolidated balance sheets.

***Primarily included in Long-term debt in the consolidated balance sheets.

The goodwill acquired is not deductible for U.S. income tax purposes. The amortization period for the intangible assets acquired is 12 years for completed technology and 15 years for customer relationships. The intangible assets are amortized using a method that approximates their economic benefit over their estimated useful lives. The goodwill recorded represents the anticipated incremental value of future cash flows potentially attributable to: (i) Crocus’ ability to grow the business with existing and new customers, including leveraging the Company’s customer base; (ii) Crocus’ ability to grow the business through new product introductions; and (iii) cost improvements due to the integration of Crocus’ operations into the Company’s existing infrastructure. Amortization of completed technology is included within cost of goods sold, and customer relationships are included within selling, general and administrative expenses.

The Company has not presented pro forma results of operations for Crocus because they are not material to the Company’s consolidated results of operations, financial position, or cash flows.

Acquisition-Related Costs

Crocus acquisition-related costs were $722 and $8,229 for the fiscal years ended March 28, 2025 and March 29, 2024, respectively, and are included in the selling, general and administrative expenses in the consolidated statements of operations.

- Definition

The entire disclosure for business combination.

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+ Details

Stock-Based Compensation - Schedule of ESPP Fair Value Assumptions (Details) - Employee Stock Purchase Plan (ESPP) - $ / shares	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance term	6 months	6 months	6 months
Volatility	53.93%	45.44%	40.97%
Risk-free rate of return	3.87%	4.70%	5.35%
Dividend yield	0.00%	0.00%	0.00%
Weighted-average fair value per share (in dollars per share)	$ 9.34	$ 7.07	$ 9.51

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Property, Plant and Equipment, Net - Schedule of Long Lived Assets (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	$ 308,258	$ 302,919
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	37,593	35,301
Philippines
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	228,664	227,038
Other
Revenues from External Customers and Long-Lived Assets [Line Items]
Total	$ 42,001	$ 40,580

Other Assets, Net (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deposits	$ 12,202	$ 18,876
Other taxes receivable long-term	6,183	5,087
Income taxes receivable long-term	4,733	13,279
Investment in debt security	3,477	0
VAT receivables long-term	1,692	10,227
Other	2,954	1,875
Total	$ 31,241	$ 49,344

Nature of the Business and Basis of Presentation

12 Months Ended

Mar. 27, 2026

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Nature of the Business and Basis of Presentation

Allegro MicroSystems, Inc., together with its consolidated subsidiaries (the “Company”), is a global leader in the design, development, and marketing of sensor integrated circuits (“ICs”) and application-specific power ICs, that enable the sensing, motion control, and power management functions of complex electromechanical or power conversion systems. The Company primarily serves automotive and industrial markets, where its solutions enable customers to sense, move, and manage power with efficiency, precision, and reliability. The Company is incorporated under the laws of Delaware. The Company is headquartered in Manchester, New Hampshire and has a global footprint, with 27 locations across four continents.

The Company prepares its financial statements in accordance with accounting principles generally accepted in the United States (“GAAP”).

Financial Periods

The Company’s fiscal year is the 52-week or 53-week period ending on the last Friday in March. The Company’s 2026 fiscal year ended March 27, 2026 (“fiscal year 2026”), the 2025 fiscal year ended March 28, 2025 (“fiscal year 2025”), and 2024 fiscal year ended March 29, 2024 (“fiscal year 2024”) were each 52-week periods.

Retirement Plans - Fair Value of Entity's Plan Assets (Details) - Pension Plan - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	$ 9,604	$ 8,432	$ 7,665
Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	5,675	4,868
Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	2,229	2,063
Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	1,700	1,501
Government securities
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	3,638	3,023
Government securities \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	3,638	3,023
Government securities \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Government securities \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Unit investment trust fund
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	1,915	1,719
Unit investment trust fund \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Unit investment trust fund \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	1,915	1,719
Unit investment trust fund \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Loans
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	760	654
Loans \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Loans \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Loans \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	760	654
Bonds
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	313	341
Bonds \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Bonds \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	313	341
Bonds \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	0	0
Stocks and other investments
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	2,978	2,695
Stocks and other investments \| Level 1
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	2,037	1,845
Stocks and other investments \| Level 2
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	1	3
Stocks and other investments \| Level 3
Defined Benefit Plan Disclosure [Line Items]
Assets of non-U.S. defined benefit plan	$ 940	$ 847

Other Assets, Net

12 Months Ended

Mar. 27, 2026

Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]

Other Assets, Net

10.

Other Assets, Net

The composition of other assets, net was as follows:


	March 27, 2026		March 28, 2025
Deposits	$	12,202	$	18,876
Other taxes receivable long-term		6,183		5,087
Income taxes receivable long-term		4,733		13,279
Investment in debt security		3,477		—
VAT receivables long-term		1,692		10,227
Other		2,954		1,875
Total	$	31,241	$	49,344

Business Combinations - Crocus - Additional Information (Details) - Crocus Technologies - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024	Oct. 02, 2023	Sep. 11, 2023
Initial Crocus Loan \| Loans Payable
Business Acquisition [Line Items]
Principal amount				$ 3,000	$ 4,000
Initial Crocus Loan \| Loans Payable \| Maximum
Business Acquisition [Line Items]
Principal amount					$ 7,000
Completed technology
Business Acquisition [Line Items]
Weighted average useful life	12 years
Customer relationships
Business Acquisition [Line Items]
Weighted average useful life	15 years
Selling, general and administrative
Business Acquisition [Line Items]
Acquisition-related costs		$ 722	$ 8,229

Related Party Transactions (Details) - USD ($)												12 Months Ended
Related Party Transactions (Details) - USD ($)	Mar. 31, 2025	Sep. 20, 2024	Aug. 07, 2024	Jul. 29, 2024	Jul. 26, 2024	Jul. 24, 2024	Jul. 23, 2024	Apr. 25, 2024	Mar. 31, 2023	Jul. 01, 2022	Dec. 02, 2021	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Related Party Transaction [Line Items]
Net proceeds from issuance of common stock												$ 0	$ 665,850,000	$ 0
Recognized loss of fair value forward repurchase contract												0	34,752,000	0
Net sales												890,096,000	725,006,000	1,049,367,000
Net Income (Loss)												(14,897,000)	(73,010,000)	152,697,000
Trade accounts receivable, net												93,248,000	84,598,000
Selling, general and administrative expenses												181,089,000	161,680,000	188,429,000
Outstanding balance												280,884,000	338,929,000
Interest income													89,000
Periodic payment													$ 1,964,000
Share Repurchase Agreement
Related Party Transaction [Line Items]
Facilitation fee included in transaction expenses							$ 35,000,000
Facilitation fee				$ 35,000,000
Common Stock
Related Party Transaction [Line Items]
Issuance of common stock													28,750,000
Common Stock \| Share Repurchase Agreement
Related Party Transaction [Line Items]
Repurchase of common stock			10,017,315	28,750,000			38,767,315
Repurchase of common stock aggregate consideration , value			$ 225,549,000	$ 628,256,000
Common Stock \| Equity Offering
Related Party Transaction [Line Items]
Net proceeds from issuance of common stock					$ 665,850,000
Issuance of common stock					28,750,000	25,000,000
Share price					$ 24	$ 23.16
Underwriting discount					$ 24,150,000
Common Stock \| Equity Offering \| Minimum
Related Party Transaction [Line Items]
Net proceeds from issuance of common stock							$ 300,000,000
Common Stock \| Underwriters Option
Related Party Transaction [Line Items]
Issuance of common stock						3,750,000
Polar Semiconductor, LLC
Related Party Transaction [Line Items]
Loss on extinguishment of debt		$ 2,804,000
Extinguishment of Debt, Amount		10,350,000
Advanced Payments Other Assets												15,000,000
Exchange for equity interests amounts of transaction								$ 175,000,000
Sanken \| Sanken Distribution Agreement, One-Time Sales Return
Related Party Transaction [Line Items]
Net sales														6,161,000
Trade accounts receivable, net												0	$ 0
Selling, general and administrative expenses									$ 5,000,000
Related party transaction amounts									$ 4,200,000
Distribution agreement period	12 months								24 months
PSL
Related Party Transaction [Line Items]
Net Income (Loss)												(9,399,000)	1,176,000	(538,000)
Purchases from related party												62,468,000	55,001,000	$ 60,426,000
Amounts due to related party												$ 4,794,000	$ 6,535,000
PSL \| Initial PSL Loan \| Loans Payable
Related Party Transaction [Line Items]
Principal amount											$ 7,500,000
Interest rate											1.26%
Term											4 years
PSL \| Secondary PSL Loan \| Loans Payable
Related Party Transaction [Line Items]
Principal amount										$ 7,500,000
Interest rate										2.99%
Term										4 years
PSL \| PSL Promissory Notes
Related Party Transaction [Line Items]
Extinguishment of Debt, Amount		$ 6,596,000
Sanken Electric Co., Ltd.
Related Party Transaction [Line Items]
Ownership percentage by majority shareholder												32.20%
Allegro Microsystems, Inc. \| Polar Semiconductor, LLC
Related Party Transaction [Line Items]
Ownership percentage by majority shareholder								10.20%

Fair Value Measurements (Tables)

12 Months Ended

Mar. 27, 2026

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping

The following tables present information about the Company’s financial assets and liabilities as of March 27, 2026 and
March 28, 2025 measured at fair value on a recurring basis:


	Fair Value Measurement at March 27, 2026:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market fund deposits	$	42,173	$	—	$	—	$	42,173
Restricted cash:
Money market fund deposits		6,604		—		—		6,604
Other long-term assets:
Investment in debt security		—		—		3,477		3,477
Total assets	$	48,777	$	—	$	3,477	$	52,254


	Fair Value Measurement at March 28, 2025:
	Level 1		Level 2		Level 3		Total
Assets:
Cash equivalents:
Money market fund deposits	$	30,814	$	—	$	—	$	30,814
Restricted cash:
Money market fund deposits		9,773		—		—		9,773
Total assets	$	40,587	$	—	$	—	$	40,587

Summary of Significant Accounting Policies (Policies)

12 Months Ended

Mar. 27, 2026

Accounting Policies [Abstract]

Principles of Consolidation

Use of Estimates

Reclassifications

Certain reclassifications have been made to prior-period amounts to conform to current-period reporting classifications.

Segment Information

Business Combinations

Foreign Currency Transaction and Translations

Foreign Currency Translation and Transactions

Non-Controlling Interests

Cash Equivalents and Restricted Cash

Fair Value of Financial Instruments

Level 1 — Quoted prices in active markets for identical assets or liabilities.

The categorization of a financial instrument within the valuation hierarchy is based on the lowest level of input that is significant to the fair value measurement.

A detailed description of fair value measurement of the assets of the non-U.S. defined benefit plan is included in Note 15, “Retirement Plans.”

Trade Accounts Receivable, Net

Inventories

Property, Plant and Equipment, Net


Asset		Useful Life
Buildings		31 years
Buildings improvements		Economic life of the building improvements
Leasehold improvements		The shorter of the remaining term of the lease or estimated useful life
Machinery and equipment		3 - 10 years
Office Equipment		3 - 7 years

Intangible Assets, Net

Impairment of Long-Lived Assets

Sales channels

Variable consideration

Practical expedients elected

Other Revenue Recognition Policies

Contract Assets and Contract Liabilities

Stock-Based Compensation

Research and Development

Pension and Other Postretirement Benefit Obligations

Income Taxes

All undistributed earnings of our foreign subsidiaries are permanently reinvested. Accordingly, the Company does not provide for U.S. income taxes on such undistributed earnings.

Net (Loss) Income Per Share

Concentrations of Credit Risk and Significant Customers

As of both March 27, 2026 and March 28, 2025, no distributor or customer accounted for 10% or more of the Company’s outstanding trade accounts receivable.

Other Comprehensive (Loss) Income

Equity-Method Investments

Subsequent Events Considerations

Recent Accounting Pronouncements

All other recent accounting pronouncements were determined to not have a material impact on the Company’s financial position, results of operations, cash flows, or related disclosures.

Goodwill and Intangible Assets - Summary of Changes in Carrying Amount of Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025
Goodwill [Roll Forward]
Beginning balance	$ 202,475	$ 202,425
Adjustments		97
Foreign currency translation	816	(47)
Ending balance	$ 203,291	$ 202,475

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Summary of Significant Accounting Policies - Recently Accounting Pronouncements - Additional Information (Details)	12 Months Ended
	Mar. 27, 2026
Accounting Policies [Abstract]
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Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false]	false
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-Section 65
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478666/740-323-65-2

Reference 10: http://www.xbrl.org/2003/role/disclosureRef
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-URI https://asc.fasb.org/1943274/2147483550/848-10-65-2

Reference 11: http://www.xbrl.org/2003/role/disclosureRef
-Topic 848
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Reference 12: http://www.xbrl.org/2003/role/disclosureRef
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Reference 13: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Section 65
-Paragraph 1
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477123/405-50-65-1

Reference 14: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
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-Name Accounting Standards Codification
-Section 65
-Paragraph 13
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482477/820-10-65-13

Reference 15: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 65
-Paragraph 13
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-URI https://asc.fasb.org/1943274/2147482477/820-10-65-13

Reference 16: http://www.xbrl.org/2003/role/disclosureRef
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Reference 17: http://www.xbrl.org/2003/role/disclosureRef
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-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479845/805-20-65-3

Reference 18: http://www.xbrl.org/2003/role/disclosureRef
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Reference 19: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
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-Name Accounting Standards Codification
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-Paragraph 2
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-URI https://asc.fasb.org/1943274/2147480016/944-40-65-2

Reference 20: http://www.xbrl.org/2003/role/disclosureRef
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Reference 21: http://www.xbrl.org/2003/role/disclosureRef
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Reference 22: http://www.xbrl.org/2003/role/disclosureRef
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Reference 23: http://www.xbrl.org/2003/role/disclosureRef
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Reference 24: http://www.xbrl.org/2003/role/disclosureRef
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Reference 25: http://www.xbrl.org/2003/role/disclosureRef
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Reference 26: http://www.xbrl.org/2003/role/disclosureRef
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-Section 65
-Paragraph 4
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481538/470-20-65-4

+ Details

Accrued Expenses and Other Current Liabilities (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Payables and Accruals [Abstract]
Accrued incentive programs	$ 44,098	$ 11,368
Accrued salaries, wages and retirement benefits	18,582	19,555
Accrued professional fees	4,601	6,132
Accrued income taxes	3,946	233
Accrued vacation	3,596	3,566
Accrued warranty costs	3,193	1,026
Accrued severance	1,981	2,336
Accrued interest	1,515	2,025
Accrued contingent consideration	0	5,000
Other	7,960	8,842
Total	$ 89,472	$ 60,083

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Mar. 27, 2026
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings (Accumulated Deficit)	Accumulated Other Comprehensive Loss	Non-controlling Interests
Preferred stock, beginning balance (in shares) at Mar. 31, 2023		0
Beginning balance (in shares) at Mar. 31, 2023			191,754,292
Beginning balance at Mar. 31, 2023	$ 966,815	$ 0	$ 1,918	$ 674,179	$ 310,315	$ (20,784)	$ 1,187
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	152,888				152,697		191
Employee stock purchase plan issuances (shares)			144,226
Employee stock purchase plan issuances	3,635		$ 1	3,634
Stock-based compensation, net of forfeitures and restricted stock vested (in shares)			1,266,091
Stock-based compensation, net of forfeitures and restricted stock vested	42,432		$ 13	42,419
Payments of taxes withheld on net settlement of equity awards	(25,900)			(25,900)
Foreign currency translation adjustment	(7,720)					(7,623)	(97)
Net actuarial gain (loss) on amortization of net transition obligation and prior service costs related to defined benefit plans, net of tax	(434)					(434)
Preferred stock, ending balance (in shares) at Mar. 29, 2024		0
Ending balance (in shares) at Mar. 29, 2024			193,164,609
Ending balance at Mar. 29, 2024	1,131,716	$ 0	$ 1,932	694,332	463,012	(28,841)	1,281
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(72,763)				(73,010)		247
Dividends to non-controlling interest	(19)						(19)
Employee stock purchase plan issuances (shares)			164,756
Employee stock purchase plan issuances	3,511		$ 2	3,509
Stock-based compensation, net of forfeitures and restricted stock vested (in shares)			974,517
Stock-based compensation, net of forfeitures and restricted stock vested	41,802		$ 9	41,793
Issuance of common stock, net of underwriting discounts (in shares)			28,750,000
Issuance of common stock, net of underwriting discounts	665,850		$ 288	665,562
Repurchases of common stock			(38,767,315)
Repurchases of common stock, value	(820,884)		$ (388)	(376,903)	(443,593)
Payments of taxes withheld on net settlement of equity awards	(16,238)			(16,238)
Foreign currency translation adjustment	(2,127)					(2,163)	36
Net actuarial gain (loss) on amortization of net transition obligation and prior service costs related to defined benefit plans, net of tax	$ 252					252
Preferred stock, ending balance (in shares) at Mar. 28, 2025	0	0
Ending balance (in shares) at Mar. 28, 2025	184,286,567		184,286,567
Ending balance at Mar. 28, 2025	$ 931,100	$ 0	$ 1,843	1,012,055	(53,591)	(30,752)	1,545
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income	(14,653)				(14,897)		244
Dividends to non-controlling interest	(23)						(23)
Employee stock purchase plan issuances (shares)			162,153
Employee stock purchase plan issuances	3,337		$ 2	3,335
Stock-based compensation, net of forfeitures and restricted stock vested (in shares)			908,623
Stock-based compensation, net of forfeitures and restricted stock vested	47,813		$ 9	47,804
Payments of taxes withheld on net settlement of equity awards	(12,612)			(12,612)
Foreign currency translation adjustment	407					475	(68)
Net actuarial gain (loss) on amortization of net transition obligation and prior service costs related to defined benefit plans, net of tax	$ 1,076					1,076
Preferred stock, ending balance (in shares) at Mar. 27, 2026	0	0
Ending balance (in shares) at Mar. 27, 2026	185,357,343		185,357,343
Ending balance at Mar. 27, 2026	$ 956,445	$ 0	$ 1,854	$ 1,050,582	$ (68,488)	$ (29,201)	$ 1,698

Retirement Plans - Change in Amounts Recognized in AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Defined Benefit Plan Disclosure [Line Items]
Less: tax benefit	$ (359)	$ (84)	$ 145
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Net transition obligation		5
Prior service costs	(73)	(71)
Net actuarial loss	894	2,322
Amounts in AOCI before tax	821	2,256
Less: tax benefit	205	564
Balance, net of tax	616	$ 1,692
Total
Beginning balance	$ 1,692

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Consolidated Statements of Comprehensive (Loss) Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Statement of Comprehensive Income [Abstract]
Defined benefit plan, tax	$ (359)	$ (84)	$ 145

Property, Plant and Equipment, Net - Schedule of Property, Plant, and Equipment (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Property, Plant and Equipment [Line Items]
Total	$ 869,106	$ 828,774
Less accumulated depreciation	(560,848)	(525,855)
Total	308,258	302,919
Land
Property, Plant and Equipment [Line Items]
Total	26,549	25,175
Buildings, building improvements and leasehold improvements
Property, Plant and Equipment [Line Items]
Total	63,929	66,258
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total	710,678	670,902
Office equipment
Property, Plant and Equipment [Line Items]
Total	7,243	6,677
Right-of-use asset
Property, Plant and Equipment [Line Items]
Total	8,797	8,182
Construction in progress
Property, Plant and Equipment [Line Items]
Total	$ 51,910	$ 51,580

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Mar. 27, 2026	Mar. 28, 2025
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	185,357,343	184,286,567
Common stock, shares outstanding (in shares)	185,357,343	184,286,567

Commitment and Contingencies

12 Months Ended

Mar. 27, 2026

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

16.

Commitments and Contingencies

Insurance

The Company, through its subsidiaries, utilizes self-insured employee health programs for employees in the U.S. The Company records estimated liabilities for its self-insured health programs based on information provided by the third-party plan administrators, historical claims experience and expected costs of claims incurred but not reported. The Company monitors its estimated liabilities on a quarterly basis. As facts change, it may become necessary to make adjustments that could be material to the Company’s consolidated financial position and results of operations.

Legal proceedings

The Company is subject to various legal proceedings and claims, and regulatory examinations or investigations arising in the normal course of business, the outcomes of which are subject to significant uncertainty, and the Company’s ultimate liability, if any, is difficult to predict. The Company records an accrual for legal contingencies when it is determined that it is probable that a liability has been incurred and the amount of the loss can be reasonably estimated. In making such determinations, the Company evaluates, among other things, the degree of probability of an unfavorable outcome and when it is probable that a liability has been incurred, the ability to make a reasonable estimate of the loss. If the occurrence of liability is probable and estimable, the Company will disclose the nature of the contingency and the likely amount of such loss or range of loss. The Company is not aware of any pending or threatened legal proceeding against the Company that it believes could have a material adverse effect on the Company’s business, operating results, cash flows or financial position.

Indemnification

From time to time, the Company has agreed to indemnify and hold harmless certain customers for potential allegations of infringement of intellectual property rights and patents arising from the use of its products. To date, the Company has not recognized or incurred any costs in connection with such indemnification arrangements.

Environmental Matters

The Company establishes accrued liabilities for environmental matters when it is probable that a liability has been incurred and the amount of the liability can be reasonably estimated. If the contingency is resolved for an amount greater or less than the accrual, or the Company’s share of the contingency increases or decreases or other assumptions relevant to the development of the estimate were to change, the Company would recognize an additional expense or benefit in the consolidated statements of operations during the period such determination was made. No significant environmental contingencies have been recorded.

Other Long-Term Liabilities

12 Months Ended

Mar. 27, 2026

Other Liabilities Disclosure [Abstract]

Other Long-Term Liabilities

14.

Other Long-Term Liabilities

The composition of other long-term liabilities is as follows:


	March 27, 2026		March 28, 2025
Accrued retirement and defined benefit plan obligation	$	8,738	$	9,997
Provision for uncertain tax positions		6,213		6,022
Other long-term liabilities		163		—
Total	$	15,114	$	16,019

Trade Accounts Receivable, Net

12 Months Ended

Mar. 27, 2026

Receivables [Abstract]

Trade Accounts Receivable, Net

Trade accounts receivable, net consisted of the following:


	March 27, 2026			March 28, 2025
Trade accounts receivable	$	141,864		$	119,071
Less:
Provision for expected credit losses		—			(618	)
Returns and sales allowances		(48,616	)		(33,855	)
Total	$	93,248		$	84,598

The change in the provision for expected credit losses was not material for the periods presented.

Retirement Plans

12 Months Ended

Mar. 27, 2026

Retirement Benefits [Abstract]

Retirement Plans

15.

Retirement Plans

The Company recognizes the funded status (i.e., the difference between the fair value of plan assets and the benefit obligations) of its defined benefit pension plans in its consolidated balance sheets with a corresponding adjustment to accumulated other comprehensive income (“AOCI”), net of tax. Further, actuarial gains and losses and prior service costs that arise in future periods and are not recognized as net periodic benefit costs in the same periods will be recognized as a component of other comprehensive (loss) income. Those amounts will also be recognized as a component of future net periodic benefit costs consistent with the Company’s past practice. The Company uses a measurement date for its defined benefit pension plans and other postretirement benefit plans that is equivalent to its fiscal year end.

Plan Descriptions

Non-U.S. Defined Benefit Plan

The Company, through its wholly owned subsidiary, Allegro MicroSystems Philippines, Inc., has a defined benefit pension plan, which is a noncontributory plan that covers substantially all employees of this subsidiary. The plan’s assets are invested in government securities, common trust funds, bonds and other debt instruments and stocks.

Effect on the consolidated statements of operations

Expense related to the non-U.S. defined benefit plan was as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025			March 29, 2024
Service cost	$	1,468		$	1,456		$	1,345
Interest cost		1,042			939			907
Expected return on plan assets		(487	)		(446	)		(468	)
Amortization of prior service cost		(8	)		(8	)		(8	)
Actuarial loss		41			71			33
Net periodic pension expense	$	2,056		$	2,012		$	1,809

Changes in the benefit obligations and plan assets for the non-U.S. defined benefit plan were as follows:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025
Obligation and funded status of plan:
Benefit obligation at beginning of year	$	17,299		$	16,194
Service cost		1,468			1,456
Interest cost		1,042			939
Benefits paid		(695	)		(892	)
Actuarial (gain) loss		(1,294	)		11
Foreign currency exchange rate changes		(688	)		(409	)
Benefit obligation at end of year	$	17,132		$	17,299
Change in plan assets:
Fair value of plan assets at beginning of year	$	8,432		$	7,665
Actual return on plan assets		608			597
Employer contributions		1,532			1,122
Benefits paid		(582	)		(758	)
Foreign currency exchange rate changes		(386	)		(194	)
Fair value of plan assets at end of year	$	9,604		$	8,432
Underfunded status at end of year	$	(7,528	)	$	(8,867	)

The underfunded plan amounts are recognized as a component of other long-term liabilities in the consolidated balance sheets.

The following table presents the obligations and asset information for the non-U.S. defined benefit plan that has a projected benefit obligation in excess of plan assets:


	Fiscal Year Ended
	March 27, 2026		March 28, 2025
Projected benefit obligations	$	17,132	$	17,299
Plan assets		9,604		8,432
Accumulated benefit obligations		10,857		10,509

The amounts recorded in AOCI for the non-U.S. defined benefit plan for the fiscal years ended March 27, 2026 and
March 28, 2025 are further detailed below:


	Fiscal Year Ended
	March 27, 2026			March 28, 2025
Net transition obligation	$	—		$	5
Prior service costs		(73	)		(71	)
Net actuarial loss		894			2,322
Amounts in AOCI before tax		821			2,256
Less: tax benefit		205			564
Balance, net of tax	$	616		$	1,692

There is no significant actuarial net gain or loss included in AOCI as of March 27, 2026 that is expected to be amortized into net periodic benefit cost over the next fiscal year.

As of March 27, 2026, the Company does not expect a significant return of plan assets during the next 12 months.

Assumptions and Investment Policies

The actuarial assumptions and methodologies used in determining the projected benefit obligation and net periodic benefit cost are reviewed on an annual basis. The primary assumptions include the Non-U.S. assumed discount rates, the Non-U.S. expected long-term returns on plan assets, and the Non-U.S. rate of compensation increases.

Weighted-Average Assumptions Used to Determine Projected Benefit Obligation


	March 27, 2026			March 28, 2025
Non-U.S. assumed discount rate		7.27	%		6.33	%
Non-U.S. rate of compensation increases		5.50	%		5.50	%

Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost


	March 27, 2026			March 28, 2025			March 29, 2024
Non-U.S. assumed discount rate		7.27	%		6.33	%		6.21	%
Non-U.S. expected long-term return on plan assets		5.44	%		5.45	%		5.54	%
Non-U.S. rate of compensation increases		5.50	%		5.50	%		5.50	%

Information on Plan Assets


	Fair Value at March 27, 2026		Level 1		Level 2		Level 3
Assets of non-U.S. defined benefit plan:
Government securities	$	3,638	$	3,638	$	—	$	—
Unit investment trust fund		1,915		—		1,915		—
Loans		760		—		—		760
Bonds		313		—		313		—
Stocks and other investments		2,978		2,037		1		940
Total	$	9,604	$	5,675	$	2,229	$	1,700


	Fair Value at March 28, 2025		Level 1		Level 2		Level 3
Assets of non-U.S. defined benefit plan:
Government securities	$	3,023	$	3,023	$	—	$	—
Unit investment trust fund		1,719		—		1,719		—
Loans		654		—		—		654
Bonds		341		—		341		—
Stocks and other investments		2,695		1,845		3		847
Total	$	8,432	$	4,868	$	2,063	$	1,501

The following table shows the change in fair value of Level 3 plan assets:


	Level 3 Non-U.S. Defined Plan Assets
	Loans			Stocks
Balance at March 29, 2024	$	574		$	909
Additions		475			—
Redemptions		(381	)		—
Revaluation of debt and equity securities		—			(39	)
Change in foreign currency exchange rates		(14	)		(23	)
Balance at March 28, 2025	$	654		$	847
Additions		558			—
Redemptions		(424	)		—
Revaluation of debt and equity securities		(2	)		126
Change in foreign currency exchange rates		(26	)		(33	)
Balance at March 27, 2026	$	760		$	940

The investments in the Company’s major benefit plans largely consist of low-cost, broad-market index funds to mitigate risks of concentration within the market sectors. The appropriate mix of equity and bond investments is determined primarily through the use of detailed asset-liability modeling studies that look to balance the impact of changes in the discount rate against the need to provide asset growth to cover future service cost. The Company has added a greater proportion of fixed income securities to the non-U.S. defined benefit plan with return characteristics that are more closely aligned with changes in liabilities caused by discount rate volatility. There are no significant restrictions on the amount or nature of the investments that may be acquired or held by the plans.

Cash Flows

During the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, the Company contributed approximately $1,532, $1,122 and $1,230 to its non-U.S. defined benefit plan, respectively. The Company expects to contribute approximately $2,790 to its non-U.S. defined benefit plan in fiscal year 2027.

Estimated Future Benefit Payments

The following table projects the benefits expected to be paid to participants from the plans in each of the following fiscal years. The majority of the payments will be paid from Company assets.


	Pension Benefits
2027	$	1,932
2028		1,585
2029		1,373
2030		1,350
2031		1,836
Total 5 years thereafter		10,961
Total	$	19,037

Defined Contribution Plan

The Company maintains a 401(k) retirement savings plan (the “401(k) Plan”) for U.S.-based employees who satisfy certain eligibility requirements. Eligible employees may defer a portion of their eligible compensation, within prescribed limits, through contributions to the 401(k) Plan. The Company matches participants’ contributions, up to a maximum of 5% of a participant’s eligible compensation, up to the statutory compensation limit, and these matching contributions are fully vested as of the date they are made. Matching contributions totaled $3,795, $5,910 and $5,956 for the fiscal years ended March 27, 2026, March 28, 2025 and
March 29, 2024, respectively.

The Company also has a defined contribution plan covering substantially all of its European employees. Contributions to this plan totaled approximately $1,833, $1,957 and $1,549 for the fiscal years ended March 27, 2026, March 28, 2025 and March 29, 2024, respectively.

- Definition

The entire disclosure for retirement benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (o)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (p)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (q)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480506/715-20-50-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 60
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480266/715-60-50-3

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 715
-SubTopic 20
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480126/715-20-S99-2

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+ Details

Retirement Plans - Defined Benefit Plans, Additional Information (Details) - Defined Benefit Plan - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Defined Benefit Plan Disclosure [Line Items]
Company contributions	$ 1,532	$ 1,122	$ 1,230
Company contributions next fiscal year	$ 2,790

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Consolidated Statements of Comprehensive (Loss) Income - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Statement of Comprehensive Income [Abstract]
Net (loss) income	$ (14,653)	$ (72,763)	$ 152,888
Net income attributable to non-controlling interests	244	247	191
Net (loss) income attributable to Allegro MicroSystems, Inc.	(14,897)	(73,010)	152,697
Other comprehensive (loss) income:
Foreign currency translation adjustment	407	(2,127)	(7,720)
Net actuarial gain (loss) on amortization of net transition obligation and prior service costs related to defined benefit plans, net of tax of $(359), $(84) and $145 in fiscal years 2026, 2025 and 2024, respectively	1,076	252	(434)
Comprehensive (loss) income	(13,414)	(74,885)	144,543
Other comprehensive gain (loss) attributable to non-controlling interests	68	(36)	97
Comprehensive (loss) income attributable to Allegro MicroSystems, Inc.	$ (13,346)	$ (74,921)	$ 144,640

Goodwill and Intangible Assets - Narrative (Details) - USD ($)	3 Months Ended	12 Months Ended
	Jun. 30, 2023	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Acquired Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization expense		$ 26,864	$ 25,658	$ 14,587
Impairment of assets held for sale		$ 6,590,000	0	$ 0
Total purchase price of acquired certain intellectual property			$ 6,000,000
Voxtel
Acquired Finite-Lived Intangible Assets [Line Items]
Impairment of assets held for sale	$ 11,600,000

- Definition

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets.

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+ Details

Leases - Schedule of Future Minimum Lease Payments under Operating and Finance Leases (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Operating Leases
2027	$ 6,826
2028	5,372
2029	3,126
2030	2,034
2031	1,094
Thereafter	4,129
Total lease payments	22,581
Less: imputed interest	(3,945)
Total lease liabilities	18,636
Finance Leases
2027	1,912
2028	1,912
2029	1,912
2030	1,702
2031	0
Thereafter	0
Total lease payments	7,438
Less: imputed interest	(1,046)
Total lease liabilities	$ 6,392	$ 7,197

Related Party Transactions

12 Months Ended

Mar. 27, 2026

Related Party Transactions

21.

Related Party Transactions

Share repurchase transactions with Sanken

On July 23, 2024, the Company entered into a share repurchase agreement with Sanken (the “Share Repurchase Agreement”) pursuant to which the Company agreed to repurchase 38,767,315 shares of the Company’s common stock from Sanken in a privately negotiated transaction at a price per share equal to the price per share at which the underwriters in a public underwritten equity offering of shares of our common stock would purchase the shares (the “Equity Offering”). The repurchase of shares of common stock occurred in two separate closings, with the first closing taking place after the closing of the Equity Offering (the “First Closing”) and the second closing (the “Second Closing”) occurring after the receipt of the proceeds from the borrowings under the Refinanced 2023 Term Loan Facility. The First Closing of the share repurchase was conditioned upon the closing of the Equity Offering and certain other conditions, and the Second Closing of the share repurchase was conditioned upon the receipt of net proceeds of no less than $300,000 from incremental term loans under the Refinanced 2023 Term Loan Facility. Pursuant to the terms of the Share Repurchase Agreement, Sanken reimbursed the Company for the expenses incurred by the Company in connection with the transactions contemplated by the Share Repurchase Agreement, and paid a facilitation fee of $35,000, which was recorded within additional paid-in-capital with the consolidated statements of changes in equity.

To fund the First Closing, the Company entered into an underwriting agreement (the “Underwriting Agreement”) with Barclays Capital Inc. and Morgan Stanley & Co. LLC, as representatives of the several underwriters (the “Underwriters”), on July 24, 2024, pursuant to which the Company agreed to sell 25,000,000 shares of the Company’s common stock to the Underwriters at a price of $23.16 per share. Under the terms of the Underwriting Agreement, the Company granted the Underwriters a 30-day option to purchase up to an additional 3,750,000 shares of the Company’s common stock at the same purchase price, which option was exercised in full prior to the closing of the Equity Offering.

On July 26, 2024, the Company completed the Equity Offering pursuant to the Underwriting Agreement of 28,750,000 shares of its common stock at a public offering price of $24.00 per share resulting in net proceeds to the Company of approximately $665,850, after deducting $24,150 of underwriting discounts. As described above, the Company used the net proceeds of the Equity Offering to complete the First Closing under the Share Repurchase Agreement.

On July 29, 2024, the Company completed the First Closing under the Share Repurchase Agreement, repurchasing 28,750,000 shares of the Company’s common stock for aggregate consideration of $628,256, which was the Equity Offering price, less the facilitation fee of $35,000, underwriting discounts, and reimbursable transaction expenses. The shares repurchased in the First Closing were retired.

On August 7, 2024, the Company completed the Second Closing under the Share Repurchase Agreement, repurchasing 10,017,315 shares of the Company’s common stock for aggregate cash consideration of $225,549, which was the Equity Offering price, less underwriting discounts and reimbursable transaction expenses. The Company used a portion of the proceeds from the Refinanced 2023 Term Loan Facility and existing cash on hand to complete the Second Closing. The shares repurchased in the Second Closing were also retired.

The Share Repurchase Agreement was accounted for as a forward repurchase contract as there were certain terms that could have caused the obligation not to be fulfilled. Accordingly, the contract was initially recorded as a liability at its fair value with subsequent remeasurements recognized in loss on change in fair value of forward repurchase contract until the completion of the First Closing and Second Closing. The Company recognized a loss of $34,752 as a result of the fair value forward repurchase contract in the consolidated statements of operations.

In connection with the Share Repurchase Agreement, the Company entered into a Second Amended and Restated Stockholders Agreement with Sanken (the “Second Amended and Restated Stockholders Agreement”), which amended and restated the Amended and Restated Stockholders Agreement, dated as of June 16, 2022, by and among the Company, Sanken and OEP SKNA, L.P. (“OEP”). The Second Amended and Restated Stockholders Agreement, which became effective in accordance with its terms on July 29, 2024, removed OEP as a party and amended certain rights and obligations of the Company and Sanken.

Other transactions involving Sanken

Net sales of the Company’s products to Sanken totaled $6,161 for the fiscal year ended March 29, 2024, and are included in net sales to related party in the consolidated statements of operations. Although certain costs are shared or allocated, cost of goods sold and gross margins attributable to related party sales are consistent with those of third-party customers. There were no trade accounts receivable, net from Sanken as of March 27, 2026 or March 28, 2025.

As of March 27, 2026, Sanken held approximately 32.2% of the Company’s outstanding shares of common stock.

Sanken Distribution Agreement

On March 30, 2023, the Company entered into a termination of the distribution agreement with Sanken (the “Termination Agreement”). The Termination Agreement formally terminated the distribution agreement dated as of July 5, 2007, by and between the Company and Sanken (the “Distribution Agreement”), effective March 31, 2023. In connection with the termination of the Distribution Agreement, and, as provided for in the Termination Agreement, the Company made a one-time payment of $5,000 to Sanken in exchange for the cancellation of Sanken’s exclusive distribution rights in Japan. Concurrent with the Termination Agreement, AML and Sanken also entered into a short-term, non-exclusive distribution agreement (as amended, the “Short-Term Distribution Agreement”) and a consulting agreement (the “Consulting Agreement”), each of which were effective April 1, 2023. In addition, the Company allowed a one-time sales return from Sanken of resalable inventory of $4,200. The Short-Term Distribution Agreement provided for the management and sale of Company product inventory for a period of 24 months from April 1, 2023. Under the terms of the Consulting Agreement, Sanken agreed to continue to provide transition services for a period of six months from
April 1, 2023 to a strategic customer as orders for the customer were transitioned from Sanken to the Company, and the Company agreed to pay Sanken for providing these transition services.

On March 31, 2025, the Company and Sanken entered into an amendment to the Short-Term Distribution Agreement to extend the term by twelve months. During the fiscal year ended March 27, 2026, no payments were made by the Company to Sanken under the Short-Term Distribution Agreement or the Consulting Agreement.

Transactions involving Polar Semiconductor, LLC (“PSL”)

On April 25, 2024, the Company, Sanken, PSL and PS Investment Aggregator, L.P. (“Subscriber”) entered into a Sale and Subscription Agreement (the “PSL Agreement”), pursuant to which Subscriber and certain of its affiliates agreed to make capital contributions to PSL of $175,000 in exchange for equity interests in PSL, which closed on September 20, 2024 (the “PSL Closing”). As contemplated by the PSL Agreement, the Company agreed to discharge all outstanding PSL Promissory Notes held by the Company for a value of $10,350 in exchange for PSL equity interests. Following the PSL Closing, the Company owned approximately 10.2% of PSL. As a result of PSL’s share issuance to Subscriber, the Company recognized a net loss of $2,804 primarily related to the difference between the selling price per share and its carrying amount per share and after a gain from the conversion of the PSL Promissory Notes. The loss is included in Other income (expense), net in the consolidated statements of operations.

For the fiscal year ended March 27, 2026, the Company made advanced payments for products of $15,000.

At the PSL Closing, the Company, Sanken and Subscriber entered into an amended and restated limited partnership agreement (the “Limited Partnership Agreement”) with Polar Semiconductor GP I, LLC. The Limited Partnership Agreement contains representations, warranties and covenants of the parties customary for a transaction of this type, the reimbursement of expenses and costs, and restrictions on transfers.

Notes Receivable from PSL

On December 2, 2021, AML entered into a loan agreement with PSL wherein PSL provided an initial promissory note to AML for a principal amount of $7,500 (the “Initial PSL Loan”). The Initial PSL Loan was to be repaid in equal installments, comprised of principal and interest accrued at 1.26% per annum, over a term of four years, with payments due on the first day of each calendar year quarter (April 1, July 1, October 1, and January 1). On July 1, 2022, PSL borrowed an additional $7,500 under the same terms of the Initial PSL Loan (the “Secondary PSL Loan” and, together with the Initial PSL Loan, the “PSL Promissory Notes”). The Secondary PSL Loan was to be repaid in equal installments, comprised of principal and interest accrued at 2.99% per annum, over a term of four years, with payments due on the first day of each calendar year quarter (April 1, July 1, October 1, and January 1). The PSL Promissory Notes were discharged in full in connection with the PSL Closing.

Prior to the discharge, during the year ended March 28, 2025, PSL made required quarterly payments to AML totaling $1,964, which included $89 of interest. The remaining outstanding principal balance and accrued interest on the PSL Promissory Notes of $6,596 was discharged in full in connection with the PSL Agreement.

Other Transactions involving PSL

The Company purchases products from PSL. Purchases of various products from PSL totaled $62,468, $55,001 and $60,426 for the fiscal years ended March 27, 2026, March 28, 2025, and March 29, 2024, respectively. Accounts payable to PSL included in amounts due to related party totaled $4,794 and $6,535 as of March 27, 2026 and March 28, 2025, respectively.

The Company recorded a net loss of $9,399, net gain of $1,176, and net loss of $538 for the fiscal years ended March 27, 2026, March 28, 2025, and March 29, 2024, respectively, related to the Company’s partnership investment in PSL included in (loss) income in earnings of equity investment.

- Definition

The entire disclosure for related party transactions. Examples of related party transactions include transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners; and (d) affiliates.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 850
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+ Details

Inventories - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
Inventories - Narrative (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Inventory Disclosure [Abstract]
Recorded inventory provisions	$ 8,426	$ 8,537	$ 9,055

Summary of Significant Accounting Policies - Intangible assets, net - Additional Information (Details)	Mar. 27, 2026
Minimum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	3 years
Maximum
Finite-Lived Intangible Assets [Line Items]
Estimated useful life	15 years

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Income Taxes - Schedule of Significant Components of Income Taxes (Benefit) Provision (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Current:
Federal	$ 5,569	$ (2,047)	$ 16,086
State	650	325	1,319
Foreign	5,527	5,090	43,117
Total current	11,746	3,368	60,522
Deferred:
Federal	(10,406)	(15,272)	10,721
State	(140)	(231)	(131)
Foreign	(1,448)	(798)	(29,203)
Total deferred	(11,994)	(16,301)	(18,613)
Total income tax (benefit) provision	$ (248)	$ (12,933)	$ 41,909

Fair Value Measurements - Additional Information (Details) - USD ($) $ in Thousands	Mar. 27, 2026	Mar. 28, 2025
Fair Value Disclosures [Abstract]
Fair value of long-term debt	$ 283,575	$ 343,275
Investment in debt security	$ 3,477

- Definition

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

+ References + Details

- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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+ Details

Restructurings - Additional Information (Details) - USD ($)	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025
January 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	$ 3,085,000	$ 5,760,000
Severance and other employee-related benefit charges	1,562,000	$ 5,121,000
Expected restructuring charges	0
June 2025 Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring costs	10,274,000
Severance and other employee-related benefit charges	4,826,000
Real estate actions expenses	5,027,000
Expected restructuring charges	$ 0

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References + Details

Debt and Other Borrowings - Additional Information (Details)							12 Months Ended
	Jan. 21, 2026 USD ($)	Jul. 31, 2025 USD ($)	May 30, 2025 USD ($)	Apr. 30, 2025 USD ($)	Feb. 06, 2025 USD ($)	Jun. 21, 2023 USD ($)	Mar. 27, 2026 USD ($)	Mar. 28, 2025 USD ($)	Aug. 06, 2024 USD ($)
Line of Credit Facility [Line Items]
Preliminary purchase price								$ 6,000,000
Letter of Credit \| Minimum \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate							1.50%
Letter of Credit \| Maximum \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate							1.75%
2024 Term Loans \| Morgan Stanley Senior Funding, Inc
Line of Credit Facility [Line Items]
Maximum borrowing capacity									$ 400,000,000
Senior Secured Revolving Credit Facility
Line of Credit Facility [Line Items]
Leverage ratio							0.045
Senior Secured Revolving Credit Facility \| Morgan Stanley Senior Funding, Inc
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 224,000,000			$ 256,000,000
Maturity date						Jun. 21, 2028
Outstanding balance							$ 0
Senior Secured Revolving Credit Facility \| Letter of Credit
Line of Credit Facility [Line Items]
Leverage ratio							0.04
Preliminary purchase price							$ 500,000,000
Terminate percentage							0.50
Senior Secured Revolving Credit Facility \| Letter of Credit \| Fed Fund Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate							0.50%
Senior Secured Revolving Credit Facility \| Letter of Credit \| One- Month SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate							1.00%
Senior Secured Revolving Credit Facility \| Letter of Credit \| Minimum
Line of Credit Facility [Line Items]
Commitment fee percentage							0.20%
Senior Secured Revolving Credit Facility \| Letter of Credit \| Minimum \| One- Month SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate							0.50%
Senior Secured Revolving Credit Facility \| Letter of Credit \| Maximum
Line of Credit Facility [Line Items]
Commitment fee percentage							0.25%
Senior Secured Revolving Credit Facility \| Letter of Credit \| Maximum \| One- Month SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate							0.75%
Senior Secured Revolving Credit Facility \| Letter of Credit \| Morgan Stanley Senior Funding, Inc
Line of Credit Facility [Line Items]
Maximum borrowing capacity						$ 20,000,000
2025 Refinancing and Repricing of Refinanced 2023 Term Loan Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	$ 285,000,000				$ 375,000,000
Amortization rate per quarter	0.00%				0.00%
Maturity date	Oct. 31, 2030				Oct. 31, 2030
Incurred fees amount					$ 1,090,000
Payment applied to the term loan balance		$ 25,000,000	$ 10,000,000	$ 25,000,000
2025 Refinancing and Repricing of Refinanced 2023 Term Loan Facility \| SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.75%				2.00%
2025 Refinancing and Repricing of Refinanced 2023 Term Loan Facility \| Fed Fund Rate
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.50%				0.50%
2025 Refinancing and Repricing of Refinanced 2023 Term Loan Facility \| One- Month SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	1.00%				1.00%
2025 Refinancing and Repricing of Refinanced 2023 Term Loan Facility \| Maximum \| One- Month SOFR
Line of Credit Facility [Line Items]
Basis spread on variable rate	0.75%				1.00%

Net (Loss) Income per Share - Schedule of Issuable Weighted Average Share Information (Details) - shares	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive effect of common stock equivalents (in shares)	0	0	2,101,183
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive effect of common stock equivalents (in shares)	0	0	888,811
Antidilutive securities excluded from computation of net income per share (in shares)	11,940	451,087	40,257
Performance Stock Units (PSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive effect of common stock equivalents (in shares)	0	0	1,210,124
Antidilutive securities excluded from computation of net income per share (in shares)	21,248	91,210	129,837
Employee Stock Purchase Plan (ESPP)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Dilutive effect of common stock equivalents (in shares)	0	0	2,248

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

+ Details

Retirement Plans - Defined Contribution Plans, Additional Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
AML US Employee, Defined Contribution Plan
Defined Contribution Plan Disclosure [Line Items]
Maximum employer contribution			5.00%
Total contributions	$ 3,795	$ 5,910	$ 5,956
AME Plan
Defined Contribution Plan Disclosure [Line Items]
Total contributions	$ 1,833	$ 1,957	$ 1,549

Income Taxes - Schedule of Income Taxes Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 27, 2026	Mar. 28, 2025	Mar. 29, 2024
Income Tax Disclosure [Abstract]
Income tax (benefit) provision at U.S. statutory rate	$ (3,129)	$ (17,996)	$ 40,907
State and local income tax, net of federal income tax effect	364	266	1,106
Foreign-derived intangible income benefit	(3,903)	(2,037)	(25,612)
Research and development tax credit	(2,179)	(3,644)	(6,188)
Stock-based compensation	2,438	2,094	(956)
Cumulative provision-to-return		(2,035)	(1,147)
Subpart F, GILTI and other inclusions, net of foreign tax credits	(122)	640	(168)
Other	867
Changes in valuation allowances	1,339
Provision for uncertain tax positions		(586)	827
162(m) limitation	2,626	3,542	3,010
Foreign tax effects/rate	1,714	(235)	2,632
Transaction costs		91	1,848
BEAT alternative minimum tax		1,454	0
Entity restructuring		(1,188)	25,921
Nondeductible - loss on forward repurchase contract		7,298	0
Refund interest and other		(597)	(271)
Other	173
Changes in unrecognized tax benefits	(436)
Total income tax (benefit) provision	$ (248)	$ (12,933)	$ 41,909
Effective Income Tax Rate Reconciliation, Percent [Abstract]
U.S. federal statutory tax rate	21.00%
State and local income tax, net of federal income tax effect	(2.40%)
Foreign tax effects	(11.50%)
Effect of cross-border tax laws:
Foreign-derived intangible income benefit	26.20%
Subpart F, GILTI and other inclusions, net of foreign tax credits	0.80%
Other	(5.80%)
Tax credits
R&D credits	14.60%
Changes in valuation allowances	(9.00%)
Nontaxable or nondeductible items:
Stock-based compensation	(16.40%)
162(m) limitation	(17.60%)
Other	(1.10%)
Changes in unrecognized tax benefits	2.90%
Effective tax rate	1.70%

Goodwill and Intangible Assets

12 Months Ended

Mar. 27, 2026

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Intangible Assets

The table below summarizes the changes in the carrying amount of goodwill as follows:


	Total
Balance at March 29, 2024	$	202,425
Adjustments		97
Foreign currency translation		(47	)
Balance at March 28, 2025	$	202,475
Foreign currency translation		816
Balance at March 27, 2026	$	203,291

Intangible assets, net were as follows:


	March 27, 2026
Description	Gross		Accumulated Amortization			Net Carrying Amount
Patents	$	53,126	$	(30,009	)	$	23,117
Customer relationships		15,187		(5,125	)		10,062
Completed technologies		255,618		(52,391	)		203,227
Indefinite-lived process technology and trademarks		2,269		—			2,269
Trademarks and other		93		(93	)		—
Total	$	326,293	$	(87,618	)	$	238,675


	March 28, 2025
Description	Gross		Accumulated Amortization			Net Carrying Amount
Patents	$	49,749	$	(25,710	)	$	24,039
Customer relationships		14,964		(4,102	)		10,862
Completed technologies		255,588		(30,648	)		224,940
Indefinite-lived process technology and trademarks		2,274		—			2,274
Trademarks and other		86		(86	)		—
Total	$	322,661	$	(60,546	)	$	262,115

Intangible assets amortization expense was $26,864, $25,658 and $14,587 for the fiscal years ended March 27, 2026,
March 28, 2025 and March 29, 2024, respectively.

In fiscal year 2025, the Company acquired certain intellectual property assets for a total purchase price of $6,000, including certain contingent, milestone-based payments, which were paid during the fiscal year ended March 27, 2026.

In February 2024, the Company initiated a realignment of resources associated with our photonics and advanced 3D imaging solutions business to refocus spending on other technologies. As a result of the change in strategy, the Company recorded impairment charges of $11,600 in the fourth quarter of fiscal year 2024 related to intangible assets, net, and long-lived assets from our 2021 acquisition of Voxtel, Inc. The results of the annual impairment test did not indicate any impairments of any other long-lived intangible assets for fiscal years 2026, 2025 and 2024.

As of March 27, 2026, amortization expense of intangible assets is expected to be as follows:


2027	$	25,915
2028		25,549
2029		25,183
2030		24,822
2031		24,397
Thereafter		110,540
Total	$	236,406