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    CONFORMED SUBMISSION TYPE:	DEF 14A
    PUBLIC DOCUMENT COUNT:		24
    CONFORMED PERIOD OF REPORT:	20210701
    FILED AS OF DATE:		20210702
    DATE AS OF CHANGE:		20210701

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ALLEGRO MICROSYSTEMS, INC.
    		CENTRAL INDEX KEY:			0000866291
    		STANDARD INDUSTRIAL CLASSIFICATION:	SEMICONDUCTORS & RELATED DEVICES [3674]
    		IRS NUMBER:				462405937
    		FISCAL YEAR END:			0325

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    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	001-39675
    		FILM NUMBER:		211067813

    	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
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