Allegro MicroSystems (ALGM) director Robert Willett files initial ownership Form 3

Rhea-AI Filing Summary

ALLEGRO MICROSYSTEMS, INC. director Robert Willett has filed an initial Form 3, which is a statement of beneficial ownership for company insiders. This filing lists him as a director but does not report any stock transactions or existing holdings, serving as a baseline ownership disclosure.

Key Terms

reportingPersons, transactionSummary, derivativeSummary

3 terms

reportingPersons regulatory

""reportingPersons": [ { "name": "Willett Robert""

transactionSummary regulatory

""transactionSummary": { "buyCount": 0, "sellCount": 0"

derivativeSummary financial

""derivativeSummary": []"

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SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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

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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. Date of Event Requiring Statement (Month/Day/Year)
05/13/2026

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

3a. Foreign Trading Symbol

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

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

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

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 Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

Remarks:

Exhibit 24 - Power of Attorney

No securities are beneficially owned.

	/s/ Raymond Myer, Attorney-in-Fact for Robert J. Willett	05/15/2026
	** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What does the ALGM Form 3 filed by Robert Willett show?

The Form 3 for ALGM shows Robert Willett as a director and serves as his initial beneficial ownership statement. It reports no stock transactions or holdings, establishing a baseline disclosure as he becomes an insider.

Did Robert Willett buy or sell Allegro MicroSystems (ALGM) shares in this Form 3?

No transactions are reported in this Form 3 for ALGM. The filing shows zero buys, sells, exercises, gifts, or other dispositions, indicating it is purely an initial ownership statement without any trading activity.

Does the ALGM Form 3 disclose any stock options or derivatives for Robert Willett?

The Form 3 data for ALGM shows no derivative positions. The derivative summary is empty and derivative transaction counts are zero, meaning no options, warrants, or similar instruments are reported in this initial filing.

What is the purpose of this Allegro MicroSystems (ALGM) Form 3 filing?

This Form 3 for ALGM is an initial statement of beneficial ownership for director Robert Willett. It formally registers him as an insider with the SEC and provides a starting point for any future ownership or trading disclosures.

Does the ALGM Form 3 indicate any major insider activity or changes?

The Form 3 for ALGM indicates no insider trading or position changes. All transaction-related counts, including buys, sells, exercises, gifts, and tax withholding, are zero, suggesting there is no impactful insider activity in this filing.