<SEC-DOCUMENT>0000950170-24-077613-index.html : 20240626
<SEC-HEADER>0000950170-24-077613.hdr.sgml : 20240626
<ACCEPTANCE-DATETIME>20240626071249
ACCESSION NUMBER:		0000950170-24-077613
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20240626
DATE AS OF CHANGE:		20240626

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			ALLEGRO MICROSYSTEMS, INC.
		CENTRAL INDEX KEY:			0000866291
		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
		ORGANIZATION NAME:           	04 Manufacturing
		IRS NUMBER:				462405937
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39675
		FILM NUMBER:		241070607

	BUSINESS ADDRESS:	
		STREET 1:		955 PERIMETER ROAD
		CITY:			MANCHESTER
		STATE:			NH
		ZIP:			03103
		BUSINESS PHONE:		(603) 626-2300

	MAIL ADDRESS:	
		STREET 1:		955 PERIMETER ROAD
		CITY:			MANCHESTER
		STATE:			NH
		ZIP:			03103

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	ALLEGRO MICROSYSTEMS INC
		DATE OF NAME CHANGE:	19900730
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>algm_2024_proxy_addtl_ma.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: algm_2024_proxy_addtl_ma.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>img160400796_0.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: img160400796_0.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>img160400796_1.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: img160400796_1.jpg

</DOCUMENT>
</SEC-DOCUMENT>