0001716690-24-000002.txt : 20240403 0001716690-24-000002.hdr.sgml : 20240403 20240403214333 ACCESSION NUMBER: 0001716690-24-000002 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240403 DATE AS OF CHANGE: 20240403 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: MSA Safety Inc CENTRAL INDEX KEY: 0000066570 STANDARD INDUSTRIAL CLASSIFICATION: ORTHOPEDIC, PROSTHETIC & SURGICAL APPLIANCES & SUPPLIES [3842] ORGANIZATION NAME: 08 Industrial Applications and Services IRS NUMBER: 464914539 FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-15579 FILM NUMBER: 24821448 BUSINESS ADDRESS: STREET 1: 1000 CRANBERRY WOODS DRIVE CITY: CRANBERRY TOWNSHIP STATE: PA ZIP: 16066 BUSINESS PHONE: 724-776-8600 MAIL ADDRESS: STREET 1: 1000 CRANBERRY WOODS DRIVE CITY: CRANBERRY TOWNSHIP STATE: PA ZIP: 16066 FORMER COMPANY: FORMER CONFORMED NAME: MINE SAFETY APPLIANCES CO DATE OF NAME CHANGE: 19920703 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: Leenen Bob Willem CENTRAL INDEX KEY: 0001716690 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: BUELSTRASSE 4 STREET 2: 6052 HERGISWIL AM SEE CITY: NIDWALDEN STATE: V8 ZIP: 6052 144 1 primary_doc.xml 144 0001716690 XXXXXXXX LIVE 0000066570 MSA Safety Inc 001-15579 Cranberry Woods Drive 1000 Cranberry Township PA 16066 7247768600 Leenen Bob Willem Executive Common Stock UBS Securities LLC

1285 Avenue of the Americas New York NY 10019

5471 1050432.00 39318501 04/04/2024 NYSE Common Stock 03/08/2023 Performance Stock Units Issuer N 2031 03/08/2023 Not applicable (compensation) Common Stock 03/08/2022 Performance Stock Units Issuer N 1904 03/08/2022 Not applicable (compensation) Common Stock 03/08/2021 Performance Stock Units Issuer N 1536 03/08/2021 Not applicable (compensation) N Bob Willem Leenen

Buelstrasse 4b Hergiswil am See V8 6052

Common Stock 03/13/2024 2977 556699.00 04/03/2024 04/04/2024 Bob Willem Leenen