    <SEC-DOCUMENT>0000950170-24-077614-index.html : 20240626
    <SEC-HEADER>0000950170-24-077614.hdr.sgml : 20240626
    <ACCEPTANCE-DATETIME>20240626071441
    ACCESSION NUMBER:		0000950170-24-077614
    CONFORMED SUBMISSION TYPE:	ARS
    PUBLIC DOCUMENT COUNT:		1
    CONFORMED PERIOD OF REPORT:	20240329
    FILED AS OF DATE:		20240626
    DATE AS OF CHANGE:		20240626
    EFFECTIVENESS DATE:		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:		ARS
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39675
    		FILM NUMBER:		241070609

    	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>ARS
    <SEQUENCE>1
    <FILENAME>algm_fy24_annual_report.pdf
    <DESCRIPTION>ARS
    <TEXT>
    Document 1 - file: algm_fy24_annual_report.pdf

    </DOCUMENT>
    </SEC-DOCUMENT>