ALLEGRO MICROSYSTEMS, INC.

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.

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 inone 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 wereno 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:

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 hadno 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 hadno 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.

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:

*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 thefiscal 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.

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:

Net sales by product:

Net sales by geography:

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.

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:

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.

Trade Accounts Receivable, Net

Trade accounts receivable, net consisted of the following:

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

Inventories

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

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.

Property, Plant and Equipment, Net

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

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 toten 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.

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:

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 withinone 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.

Goodwill and Intangible Assets

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

Intangible assets, net were as follows:

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:

Other Assets, Net

The composition of other assets, net was as follows:

Accrued Expenses and Other Current Liabilities

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

Leases

The Company leases real estate, equipment and vehicles under operating lease agreements that have initial terms ranging fromone 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 orterminate 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:

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

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

Debt and Other Borrowings

The Company’s debt obligations consisted of the following:

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 wereno 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.

Other Long-Term Liabilities

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

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:

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

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:

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:

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

Weighted-Average Assumptions Used to Determine Net Periodic Benefit Cost

Information on 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”:

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

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.

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.

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.

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.

Net (Loss) Income per Share

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

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:

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:

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 offive 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:

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:

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

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 issix months.

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

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

Income Taxes

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

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

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:

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:

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.

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:

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.

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.

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 doesnot 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.

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

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 doesnot 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.

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

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 wereno 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 bytwelve 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 offour 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 offour 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.