Michael Doogue - May 15, 2025 Form 4 Insider Report for ALLEGRO MICROSYSTEMS, INC. (ALGM)

Role: President and CEO, Director
Signature: /s/ Raymond Myer, Attorney-in-Fact for Michael C. Doogue
Stock symbol: ALGM
Transactions as of: May 15, 2025
Transactions value $: -$597,792
Form type: 4
Date filed: 5/19/2025, 04:20 PM
Previous filing: May 14, 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Doogue Michael	President and CEO, Director	955 PERIMETER ROAD, MANCHESTER	/s/ Raymond Myer, Attorney-in-Fact for Michael C. Doogue	2025-05-19	0001828862

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	ALGM	Common Stock	Award	$0	+150K	+172.57%	$0.00	237K	May 15, 2025	Direct	F1
transaction	ALGM	Common Stock	Tax liability	-$598K	-21.7K	-9.16%	$27.51	216K	May 16, 2025	Direct	F2
holding	ALGM	Common Stock						246K	May 15, 2025	By the Michael C. Doogue Revocable Trust of 2015

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents an award of Restricted Stock Units ("RSUs") granted on May 15, 2025. Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest in three equal annual installments beginning on May 16, 2026.
F2	Represents shares withheld to cover taxes due upon the vesting of performance-vesting restricted stock units and RSUs that were previously granted by the Issuer.