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  4. [Form 4] ALLEGRO MICROSYSTEMS, INC. Insider Trading Activity

Allegro MicroSystems (ALGM) awards 4,251 deferred stock units to director

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

WHITE BRIAN C reported acquisition or exercise transactions in this Form 4 filing.

Allegro MicroSystems director Brian C. White received an award of 4,251 Deferred Stock Units (DSUs) on August 5, 2026 as part of the non-employee director compensation program. Each DSU equals 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, he directly held 4,251 DSUs.

Positive

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  • None.
Insider WHITE BRIAN C
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.
Deferred Stock Units granted 4251.0000 units Equity award to director on 2026-08-05
Underlying common shares 4251.0000 shares Each DSU represents one share of common stock
Deferred Stock Units held after grant 4251.0000 units Director’s direct DSU holdings following the transaction
Deferred Stock Units financial
"Each deferred stock unit ("DSU") represents a contingent right to receive one share"
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 of the Issuer's Common Stock following the reporting person's separation from service"

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Form 4 Insider Transactions: What Each Field Means →

FAQ

What insider transaction did Allegro MicroSystems (ALGM) report for Brian C. White?
Allegro MicroSystems reported that director Brian C. White received an equity grant of 4,251 Deferred Stock Units on August 5, 2026. The award is part of the company’s non-employee director compensation program and is structured to convert into common shares in the future.

How many Deferred Stock Units were granted to the ALGM director and what do they represent?
Brian C. White was granted 4,251 Deferred Stock Units (DSUs). Each DSU represents a contingent right to receive one share of Allegro MicroSystems common stock, credited on a one-for-one basis relative to his annual non-employee director equity compensation award.

When do Brian C. White’s Deferred Stock Units in Allegro MicroSystems (ALGM) vest and settle?
The Deferred Stock Units are fully vested when granted. They will be settled in shares of Allegro MicroSystems common stock following Brian C. White’s separation from service, disability, or death, according to the terms described in the company’s director compensation arrangements.

Under which plans were the 4,251 DSUs for Allegro MicroSystems (ALGM) director granted?
The 4,251 DSUs were granted under Allegro MicroSystems’ 2020 Omnibus Incentive Compensation Plan and pursuant to a prior election under its Deferred Compensation Plan for Non-Employee Directors, reflecting the director’s choice to receive equity compensation in deferred stock units.

Does this Allegro MicroSystems (ALGM) Form 4 show any open-market stock purchases or sales?
No. The Form 4 reports a grant of 4,251 Deferred Stock Units to director Brian C. White as compensation. It does not report any open-market purchases or sales of Allegro MicroSystems common stock by him in this transaction.

What is Brian C. White’s reported Deferred Stock Unit holding in ALGM after this transaction?
Following the reported grant, Brian C. White directly held 4,251 Deferred Stock Units linked to Allegro MicroSystems common stock. This matches the size of the award, indicating his DSU holdings reflect this single fully vested compensation grant as of the transaction date.
SEC Form 4
FORM 4UNITED 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*
WHITE BRIAN C
(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)
XDirector10% 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)
XForm 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)
CodeVAmount(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Deferred Stock Units(1)08/05/2026A4,251(2) (3) (3)Common Stock4,251$04,251D
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 Brian C. White08/07/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR