0000950170-23-054387.txt : 20231020 0000950170-23-054387.hdr.sgml : 20231020 20231020162351 ACCESSION NUMBER: 0000950170-23-054387 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20231018 FILED AS OF DATE: 20231020 DATE AS OF CHANGE: 20231020 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: PUMA MARY G CENTRAL INDEX KEY: 0001158015 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39675 FILM NUMBER: 231337390 MAIL ADDRESS: STREET 1: AXCELIS TECHNOLOGIES INC. STREET 2: 108 CHERRY HILL DRIVE CITY: BEVERLY STATE: MA ZIP: 01915 ISSUER: 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 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 4 1 ownership.xml 4 X0508 4 2023-10-18 0000866291 ALLEGRO MICROSYSTEMS, INC. ALGM 0001158015 PUMA MARY G 955 PERIMETER ROAD MANCHESTER NH 03103 true false false false false Common Stock 2023-10-18 4 A false 4678 0.0000 A 4678 D Represents an award of Restricted Stock Unites ("RSUs"). Each RSU represents a contingent right to receive one share of common stock. The RSUs will vest on the date of the next annual meeting following the grant date. /s/ Raymond Myer, Attorney-in-Fact for Mary G. Puma 2023-10-20