Allegro MicroSystems (NASDAQ: ALGM) grants director 4,251 deferred units

Rhea-AI Filing Summary

Willett Robert reported acquisition or exercise transactions in this Form 4 filing.

Allegro MicroSystems, Inc. director Robert Willett received an equity compensation grant of 4,251 Deferred Stock Units (DSUs) on August 5, 2026. Each DSU represents one share of common stock, is fully vested at grant, and will be settled in shares after his separation from service, disability, or death. Following this grant, Willett directly holds 4,251 DSUs.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Willett Robert

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Deferred Stock Units F1, F2, F3	4,251	$0.00	$0.00

Holdings After Transaction: Deferred Stock Units — 4,251 shares (Direct)

Footnotes (3)

1. F1. Each deferred stock unit ("DSU") represents a contingent right to receive one share of the Issuer's Common Stock.
2. F2. As part of the Company's non-employee director compensation program, the reporting person elected to receive their annual non-employee director equity compensation in the form of DSUs under the Issuer's 2020 Omnibus Incentive Compensation Plan and pursuant to a prior election under the Company's Deferred Compensation Plan for Non-Employee Directors. The DSUs were credited on a one-for-one basis relative to the award of shares of the Issuer's Common Stock.
3. F3. The DSUs are fully vested when granted and will be settled in shares of the Issuer's Common Stock following the reporting person's separation from service, disability, or death.

Key Figures

Deferred Stock Units granted: 4,251 units Award price per unit: $0.0000 per unit Underlying common shares: 4,251 shares +1 more

4 metrics

Deferred Stock Units granted 4,251 units Equity compensation grant to director Robert Willett on 2026-08-05

Award price per unit $0.0000 per unit Reported transaction price for the DSU grant

Underlying common shares 4,251 shares Each DSU represents a contingent right to one share of common stock

Holdings after transaction 4,251 Deferred Stock Units Total DSUs held directly by Robert Willett following the grant

Key Terms

Deferred Stock Units, 2020 Omnibus Incentive Compensation Plan, Deferred Compensation Plan for Non-Employee Directors, separation from service

4 terms

Deferred Stock Units financial

"Each deferred stock unit ("DSU") represents a contingent right"

Deferred stock units are promises from a company to give an employee shares of stock at a future date, often after certain conditions are met or after leaving the company. They function like a form of delayed compensation, allowing employees to earn shares over time. For investors, they represent potential future ownership in the company, but do not provide immediate voting rights or dividends until the shares are actually received.

2020 Omnibus Incentive Compensation Plan financial

"in the form of DSUs under the Issuer's 2020 Omnibus Incentive Compensation Plan"

Deferred Compensation Plan for Non-Employee Directors financial

"pursuant to a prior election under the Company's Deferred Compensation Plan for Non-Employee Directors"

separation from service financial

"will be settled in shares ... following the reporting person's separation from service, disability, or death"

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Available on EDGAR 08/07/2026 - 07:02 AM Accepted by SEC EDGAR 08/07/2026 - 07:02 AM Learn about SEC filing dates

FAQ

What insider transaction did Allegro MicroSystems (ALGM) report for Robert Willett?

Robert Willett received 4,251 Deferred Stock Units (DSUs) as equity compensation. The DSUs are fully vested at grant and each represents a right to receive one share of Allegro MicroSystems common stock in the future.

How many Allegro MicroSystems (ALGM) shares are underlying Robert Willett’s new DSUs?

The grant covers 4,251 DSUs, with each DSU equal to one share of Allegro MicroSystems common stock. In total, the award represents 4,251 underlying shares, to be delivered upon settlement events.

When will Robert Willett’s Allegro MicroSystems (ALGM) DSUs be settled?

The DSUs will be settled in shares of Allegro MicroSystems common stock after Robert Willett’s separation from service, disability, or death, consistent with the company’s non-employee director deferred compensation arrangements.

Are Robert Willett’s Allegro MicroSystems (ALGM) DSUs vested?

Yes. The filing states that the DSUs are fully vested when granted. Although vested, they are not paid out immediately and will be settled later in Allegro MicroSystems common stock upon specified triggering events.

Under which plans were Robert Willett’s Allegro MicroSystems (ALGM) DSUs granted?

The DSUs were granted under the 2020 Omnibus Incentive Compensation Plan and pursuant to a prior election under the Deferred Compensation Plan for Non-Employee Directors, as part of Allegro MicroSystems’ non-employee director compensation program.

Did Robert Willett purchase Allegro MicroSystems (ALGM) shares on the market in this Form 4?

No. The Form 4 reports a grant of 4,251 DSUs as non-employee director equity compensation at a stated price of $0.0000 per unit, rather than an open-market purchase or sale transaction.

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
Estimated average burden
hours per response:			0.5

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^*

Willett Robert

(Last) (First) (Middle)

955 PERIMETER ROAD

(Street)

MANCHESTER NEW HAMPSHIRE 03103

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/05/2026

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

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

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

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

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
Deferred Stock Units	(1)	08/05/2026		A		4,251(2)		(3)	(3)	Common Stock	4,251	$0	4,251	D

Explanation of Responses:

1. Each deferred stock unit ("DSU") represents a contingent right to receive one share of the Issuer's Common Stock.

2. As part of the Company's non-employee director compensation program, the reporting person elected to receive their annual non-employee director equity compensation in the form of DSUs under the Issuer's 2020 Omnibus Incentive Compensation Plan and pursuant to a prior election under the Company's Deferred Compensation Plan for Non-Employee Directors. The DSUs were credited on a one-for-one basis relative to the award of shares of the Issuer's Common Stock.

3. The DSUs are fully vested when granted and will be settled in shares of the Issuer's Common Stock following the reporting person's separation from service, disability, or death.

	/s/ Raymond Myer, Attorney-in-Fact for Robert J. Willett	08/07/2026
	** 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.
* Form 4: SEC 1474 (03-26)