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The Allegro MicroSystems, Inc. 2020 Omnibus Incentive Compensation Plan (the “Plan”) provides for the grant of restricted stock units in accordance with the terms and conditions of the Plan. The Committee has decided to make this grant of restricted stock units with specific performance criteria as an inducement for the Participant to perform against specific Performance Goals established by the Company. This Agreement is made pursuant to the Plan and is subject in its entirety to all applicable provisions of the Plan. Capitalized terms used herein and not otherwise defined will have the meanings set forth in the Plan. Notwithstanding the foregoing, except as specifically provided herein, to the extent the Participant is party to a severance agreement with the Company and this Agreement includes terms that conflict with the terms included in such severance agreement, the terms included in such severance agreement shall govern to the extent that such terms are permitted under the Plan and have been properly authorized in accordance with the Plan and applicable law.

1.Grant of PSUs. Subject to the terms and conditions set forth in this Agreement and in the Plan, the Company hereby makes a grant of performance restricted stock units to the Participant consisting of the target number set forth on Exhibit A hereto (the “Target Award”), subject to the restrictions set forth below and in the Plan (the “PSUs”). Each PSU represents the right of the Participant to receive a share of common stock of the Company (“Company Stock”) if and when the specified conditions set forth on Exhibit A are met, and on the applicable payment date set forth in Section 5 below.

2.Stock Unit Account. PSUs represent hypothetical shares of Company Stock, and not actual shares of stock. The Company shall establish and maintain a Stock Unit account, as a bookkeeping account on its records, for the Participant and shall record in such account the number of PSUs granted to the Participant. No shares of Company Stock shall be issued to the Participant at the time the grant is made, and the Participant shall not be, and shall not have any of the rights or privileges of, a stockholder of the Company with respect to any PSUs recorded in the Stock Unit account. The Participant shall not have any interest in any fund or specific assets of the Company by reason of this award or the Stock Unit account established for the Participant.

4.Termination of PSUs. If the Participant experiences a termination of employment or service for any reason prior to the applicable Vesting Date, the PSUs automatically shall be terminated and forfeited as of the date of the Participant’s termination of employment or service, except as otherwise set forth on Exhibit A. No payment shall be made with respect to any unvested PSUs that terminate as described in this Section 4.

(b)The Participant acknowledges that, regardless of any action taken by the Company or, if different, the Participant's employer (the “Employer”), the ultimate liability for all income tax, social insurance, payroll tax, fringe benefits tax, payment on account or other tax-related items related to the Participant's participation in the Plan and legally applicable or deemed applicable to the Participant (“Tax-Related Items”) is and remains the Participant's responsibility and may exceed the amount, if any, actually withheld by the Company or the Employer. The Participant further acknowledges that the Company and/or the Employer (i) make no representations or undertakings regarding the treatment of any Tax-Related Items in connection with any aspect of the PSUs or the underlying shares of Company Stock, including, but not limited to, the grant, vesting or settlement of the PSUs, the subsequent sale of shares of Company Stock acquired pursuant to such settlement and the receipt of any dividends; and (ii) do not commit to and are under no obligation to structure the terms of the grant or any aspect of the PSUs to reduce or eliminate the Participant's liability for Tax-Related Items or achieve any particular tax result. Further, if the Participant is subject to Tax-Related Items in more than one jurisdiction, the Participant acknowledges that the Company and/or the Employer (or former employer, as applicable) may be required to withhold or account for Tax-Related Items in more than one jurisdiction.

(c)Prior to any relevant taxable or tax withholding event, as applicable, the Participant agrees to make adequate arrangements satisfactory to the Company and/or the Employer to satisfy all Tax-Related Items. In this regard, the Participant authorizes the Company or its agent to satisfy the obligations with regard to all Tax-Related Items by withholding shares of Company Stock otherwise issuable upon vesting that have an aggregate Fair Market Value sufficient to pay the minimum Tax-Related Items required to be withheld (or an equivalent cash amount, where the PSUs are settled in cash in the Company’s sole discretion). For purposes of the foregoing, no fractional shares of Company Stock will be withheld or issued pursuant to the grant of the PSUs. In the event that such withholding in shares of Company Stock is problematic under applicable tax or securities law or has materially adverse accounting consequences, by accepting this Agreement, the Participant authorizes the Company or its respective agents to satisfy any applicable withholding obligations or rights with regard to all Tax-Related Items by (i) selling on the Participant's behalf a whole number of shares from those shares of Company Stock issued to the Participant as the Company determines to be appropriate to generate cash

proceeds sufficient to satisfy any applicable withholding obligations or rights for Tax-Related Items, (ii) withholding from the Participant's wages or other cash compensation paid to the Participant by the Company and/or the Employer (iii) requiring the Participant to make cash payment in an amount equal to the withholding obligations or rights for Tax-Related Items or (iv) any other method of withholding determined by the Company and to the extent required by applicable law or the Plan, approved by the Committee.

(d)The Company may withhold or account for Tax-Related Items by considering applicable minimum statutory withholding rates or other applicable withholding rates, including maximum withholding rates applicable in the Participant's jurisdiction(s). In the event of over-withholding, the Participant may receive a refund of any over-withheld amount in cash and (with no entitlement to the equivalent in shares of Company Stock) or if not refunded, the Participant may seek a refund from the local tax authorities. In the event of under-withholding, the Participant may be required to pay any additional Tax-Related Items directly to the applicable tax authority or to the Company and/or the Employer. If any obligation for Tax-Related Items is satisfied by withholding in shares of Company Stock, for tax purposes, the Participant is deemed to have been issued the full number of shares of Company Stock subject to the vested PSUs, notwithstanding that a number of the shares of Company Stock is held back solely for the purpose of paying certain of the Tax-Related Items.

(e)The Participant agrees to pay to the Company or the Employer any amount of Tax-Related Items that the Company or the Employer may be required to withhold or account for as a result of the Participant's participation in the Plan that cannot be satisfied by the means previously described. The Company may refuse to issue or deliver the shares or cash in settlement of the PSUs if the Participant fails to comply with the Participant's obligations in connection with the Tax-Related Items.

(f)The obligation of the Company to deliver Company Stock shall also be subject to the condition that if at any time the Board shall determine in its discretion that the listing, registration or qualification of the shares upon any securities exchange or under any state or federal or local law, or the consent or approval of any governmental regulatory body is necessary or desirable as a condition of, or in connection with, the issuance of shares, the shares may not be issued in whole or in part unless such listing, registration, qualification, consent or approval shall have been effected or obtained free of any conditions not acceptable to the Board. The issuance of shares, if any, to the Participant pursuant to this Agreement is subject to any applicable taxes and other laws or regulations of the United States or of any state, municipality or other country having jurisdiction thereof.

6.No Stockholder Rights; Dividend Equivalents. Neither the Participant, nor any person entitled to receive payment in the event of the Participant’s death, shall have any of the rights and privileges of a stockholder with respect to shares of Company Stock, including voting or dividend rights, until certificates for shares have been issued, or applicable book entry has been made, upon payment of PSUs. The Participant acknowledges that no election under Section 83(b) of the Code is available with respect to PSUs. Notwithstanding the foregoing, the Committee may grant to the Participant Dividend Equivalents on the shares underlying the PSUs

7.Grant Subject to Plan Provisions. This grant is made pursuant to the Plan, the terms of which are incorporated herein by reference, and in all respects shall be interpreted in accordance with the Plan. The grant and payment of the PSUs are subject to the provisions of the Plan and to interpretations, regulations and determinations concerning the Plan established from time to time by the Committee in accordance with the provisions of the Plan, including, but not limited to, provisions pertaining to (a) rights and obligations with respect to withholding taxes, (b) the registration, qualification or listing of the shares of Company Stock, (c) changes in capitalization of the Company, (d) the Company’s discretion to determine the final payment, and (e) other requirements of applicable law. The Committee shall have the authority to interpret and construe the PSUs pursuant to the terms of the Plan, and its decisions shall be conclusive as to any questions arising hereunder.

8.No Employment or Other Rights. The grant of the PSUs shall not confer upon the Participant any right to be retained by or in the employ or service of any Employer and shall not interfere in any way with the right of any Employer to terminate the Participant’s employment or service at any time, subject to compliance with local law and the terms of any applicable employment agreement. The right of any Employer to terminate at will the Participant’s employment or service at any time for any reason is specifically reserved.

9.Assignment and Transfers. Except as the Committee may otherwise permit pursuant to the Plan, the rights and interests of the Participant under this Agreement may not be sold, assigned, encumbered or otherwise transferred except, in the event of the death of the Participant, by will or by the laws of descent and distribution. In the event of any attempt by the Participant to alienate, assign, pledge, hypothecate, or otherwise dispose of the PSUs or any right hereunder, except as provided for in this Agreement, or in the event of the levy or any attachment, execution or similar process upon the rights or interests hereby conferred, the Company may terminate the PSUs by notice to the Participant, and the PSUs and all rights hereunder shall thereupon become null and void. The rights and protections of the Company hereunder shall extend to any successors or assigns of the Company and to the Company’s parents, subsidiaries, and affiliates. This Agreement may be assigned by the Company without the Participant’s consent.

10.Applicable Law; Jurisdiction. The validity, construction, interpretation and effect of this Agreement shall be governed by and construed in accordance with the laws of the State of Delaware, without giving effect to the conflicts of laws provisions thereof. Any action arising out of, or relating to, any of the provisions of this Agreement shall be brought only in the United States District Court for the District of New Hampshire, or if such court does not have jurisdiction or will not accept jurisdiction, in any court of general jurisdiction in Manchester, New Hampshire, and the jurisdiction of such court in any such proceeding shall be exclusive. Notwithstanding the foregoing sentence, on and after the date the Participant receives shares of Company Stock hereunder, the Participant will be subject to the jurisdiction provision set forth in the Company’s bylaws.

11.Notice. Any notice to the Company provided for in this instrument shall be addressed to the Company in care of the General Counsel at the corporate headquarters of the Company, and any notice to the Participant shall be addressed to such Participant at the current address shown on the payroll of the Employer. Any notice shall be delivered by hand, or enclosed in a properly sealed envelope addressed as stated above, registered and deposited, postage prepaid, in a post office regularly maintained by the United States Postal Service or by the postal authority of the country in which the Participant resides or to an internationally recognized expedited mail courier.

12.Recoupment Policy. In addition to this Agreement and subject to Section 19(h) of the Plan, the PSUs and any shares of Company Stock issued to the Participant pursuant to the PSUs shall be subject to and remain subject to any incentive compensation clawback or recoupment policy of the Company currently in effect or as may be adopted by the Company and, in each case, as may be amended from time to time (the “Policy”), to the extent the Policy is applicable to the Participant based upon the Participant's position and responsibilities. For purposes of the foregoing, the Participant expressly and explicitly authorizes the Company to issue instructions, on the Participant's behalf, to any brokerage firm and/or third party administrator engaged by the Company to hold shares of Company Stock and other amounts acquired pursuant to the PSUs to re-convey, transfer or otherwise return such shares of Company Stock and/or other amounts to the Company upon the Company’s enforcement of the Policy. To the extent that this Agreement, the Plan and/or the Policy conflict, the terms of the Policy shall prevail.

(a)Non-Disclosure of Confidential Information. The Participant acknowledges that the Participant has access to certain sensitive, confidential, proprietary, and/or trade secret information from the Company (collectively, “Confidential Information”) that the Company considers valuable and that provides the Company with a competitive advantage. Examples of Confidential Information include, but are not limited to, inventions, new product or marketing plans, business strategies and plans, merger and acquisition targets, financial and pricing information, computer programs, source codes, models and databases, analytical models, customer lists and information, and supplier and vendor lists and information. The Participant acknowledges that the use of such Confidential Information other than in furtherance of the Participant’s job responsibilities with the Company would cause immediate and irreparable harm to the Company. The Participant agrees not to disclose or use Confidential Information, either during or after the Participant’s employment with the Company, and except as specifically permitted by the Company, or as required by law. The Participant must also comply with all terms and provisions of any existing confidentiality agreement with the Company or otherwise required by applicable law.

(b)Non-Solicitation of Employees. Because of the Company’s legitimate business interests as described herein and the good and valuable consideration offered pursuant to this Agreement, during the time the Participant is employed by the Company and for a period of two (2) years (limited to one year for all employees in California) following the termination of the

Participant’s employment, the Participant may not directly or indirectly, solicit, attempt to solicit, induce, or attempt to induce any employee of the Company or any affiliate, to terminate such employee’s employment relationship with the Company or any affiliate in order to enter into a similar relationship with the Participant, or any other person or any entity.

If the Participant fails to comply with the above Restrictive Covenants, the Company shall be entitled to all remedies or damages available under applicable law, including, but not limited to, injunctive relief, equitable relief, and/or attorneys’ fees. In addition, the Participant shall forfeit any unvested PSUs and/or underlying shares of Company Stock. The Participant agrees to advise any person or entity that seeks to employ the Participant of the terms of these Restrictive Covenants.

14.Application of Section 409A of the Code. This Agreement is intended to be exempt from or otherwise comply with the provisions of Section 409A of the Code. Notwithstanding the foregoing, if the PSUs constitute “deferred compensation” under Section 409A of the Code and the PSUs become vested and settled upon the Participant’s termination of employment, payment with respect to the PSUs shall be delayed for a period of six (6) months after the Participant’s termination of employment if the Participant is a “specified employee” as defined under Section 409A of the Code and if required pursuant to Section 409A of the Code. If payment is delayed, the PSUs shall be settled and paid within thirty (30) days after the date that is six (6) months following the Participant’s termination of employment. Payments with respect to the PSUs may only be paid in a manner and upon an event permitted by Section 409A of the Code, and each payment under the PSUs shall be treated as a separate payment, and the right to a series of installment payments under the PSUs shall be treated as a right to a series of separate payments. In no event shall the Participant, directly or indirectly, designate the calendar year of payment. The Company may change or modify the terms of this Agreement without the Participant’s consent or signature if the Company determines, in its sole discretion, that such change or modification is necessary for purposes of compliance with or exemption from the requirements of Section 409A of the Code or any regulations or other guidance issued thereunder. Notwithstanding the previous sentence, the Company may also amend the Plan or this Agreement or revoke the PSUs to the extent permitted by the Plan.

15.Electronic Delivery and Participation. The Company may, in its sole discretion, decide to deliver any documents related to current or future participation in the Plan by electronic means. The Participant hereby consents to receive such documents by electronic delivery and agrees to participate in the Plan through an on-line or electronic system established and maintained by the Company or a third party designated by the Company.

ELECTRONIC ACCEPTANCE: By electronically accepting this Agreement via Fidelity’s web portal at www.netbenefits.fidelity.com and completing the electronic acceptance procedures reflected therein, the Participant hereby accepts the award of PSUs described in this Agreement, and the Participant expressly agrees to be bound by the terms and conditions of the Plan and this Agreement. Further, the Participant hereby expressly acknowledges and agrees that all decisions and determinations of the Committee with respect to the PSUs shall be final, conclusive and binding upon the Participant.


ALLEGRO MICROSYSTEMS, INC.


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Date						Participant