[Form 4] Allegro MicroSystems, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Mary G. Puma, a director of Allegro MicroSystems, Inc. (ALGM), was granted 5,932 restricted stock units (RSUs) on 08/07/2025. Each RSU represents a contingent right to one share of common stock and the RSUs will vest on the date of the next annual meeting following the grant date. The grant is reported at a $0.00 price. After the award the filing shows 17,483 shares beneficially owned. The Form 4 was filed by one reporting person and the signature block shows the form was signed by an attorney-in-fact on 08/08/2025.

Positive

• 5,932 RSUs granted to director Mary G. Puma on 08/07/2025
• Clear vesting schedule: RSUs vest on the date of the next annual meeting
• Beneficial ownership reported increased to 17,483 shares following the award

Negative

• None.

Insights

Financial Analyst

TL;DR: Director received 5,932 RSUs; routine equity grant reported on Form 4 with no cash outlay.

The filing documents a non-derivative award of 5,932 RSUs to Mary G. Puma on 08/07/2025 at a reported price of $0.00. Each RSU converts to one share upon vesting, and the RSUs are scheduled to vest on the date of the next annual meeting. The filing shows 17,483 shares beneficially owned following the grant. This is a standard equity compensation event for a director and has no immediate cash impact disclosed in the filing.

Corporate Governance Expert

TL;DR: Time‑based RSU grant vests at next annual meeting; standard governance practice for aligning director incentives.

The disclosure specifies the award is in the form of restricted stock units that vest on the next annual meeting following the grant date, indicating a straightforward time‑based vesting schedule. No derivative instruments were reported in Table II. The Form 4 was filed by a single reporting person and executed by an attorney‑in‑fact, which is consistent with routine administrative handling of insider reports.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

PUMA MARY G

(Last) (First) (Middle)

955 PERIMETER ROAD

(Street)

MANCHESTER NH 03103

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
ALLEGRO MICROSYSTEMS, INC. [ ALGM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
08/07/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/07/2025		A		5,932(1)	A	$0.00	17,483	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Transaction reported relates solely to an award of Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest on the date of the next annual meeting following the grant date.

	/s/ Raymond Myer, Attorney-in-Fact for Mary G. Puma	08/08/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Mary G. Puma report on Form 4 for ALGM?

Mary G. Puma reported an award of 5,932 RSUs on 08/07/2025; each RSU is a contingent right to one share and the filing shows 17,483 shares beneficially owned after the grant.

When do the RSUs granted to Mary G. Puma vest?

The RSUs will vest on the date of the next annual meeting following the grant date.

What price was reported for the RSU grant in the ALGM Form 4?

The grant is reported at a price of $0.00.

Were any derivative securities reported in this Form 4 for ALGM?

No derivative securities are reported in Table II; the filing documents a non-derivative RSU award in Table I.

Who signed and filed the Form 4 and when?

The Form 4 indicates it was filed by one reporting person and the signature block shows it was signed by an attorney-in-fact on 08/08/2025.