<SEC-DOCUMENT>0001193125-21-032396-index.html : 20210208
<SEC-HEADER>0001193125-21-032396.hdr.sgml : 20210208
<ACCEPTANCE-DATETIME>20210208163059
ACCESSION NUMBER:		0001193125-21-032396
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210208
DATE AS OF CHANGE:		20210208

SUBJECT COMPANY:	

	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:			0331

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-92108
		FILM NUMBER:		21601827

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sanken Electric Co., Ltd.
		CENTRAL INDEX KEY:			0001830077
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			M0
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		C/O ALLEGRO MICROSYSTEMS, INC.
		STREET 2:		955 PERIMETER ROAD
		CITY:			MANCHESTER
		STATE:			NH
		ZIP:			03103
		BUSINESS PHONE:		(603) 626-2300

	MAIL ADDRESS:	
		STREET 1:		C/O ALLEGRO MICROSYSTEMS, INC.
		STREET 2:		955 PERIMETER ROAD
		CITY:			MANCHESTER
		STATE:			NH
		ZIP:			03103
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>d110478dsc13g.htm
<DESCRIPTION>SC 13G
<TEXT>
Document 1 - file: d110478dsc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>