0001950047-24-005708.txt : 20240731 0001950047-24-005708.hdr.sgml : 20240731 20240731163450 ACCESSION NUMBER: 0001950047-24-005708 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20240731 DATE AS OF CHANGE: 20240731 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: 241162524 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: Vartanian Nishan J. CENTRAL INDEX KEY: 0001564614 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 1000 CRANBERRY WOODS DRIVE CITY: CRANBERRY TOWNSHIP STATE: PA ZIP: 16066 144 1 primary_doc.xml 144 0001564614 XXXXXXXX LIVE 0000066570 MSA SAFETY INC 001-15579 1000 Cranberry Woods Drive Cranberry Township PA 16066 (724) 776-8600 NISHAN J VARTANIAN & PAMELA A VARTANIAN Non-Executive Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

3945 745605.00 39352993 07/31/2024 NYSE Common 04/07/2021 Performance Stock Units Issuer N 970 04/07/2024 Not Applicable Common 03/08/2021 Performance Stock Units Issuer N 2975 03/08/2024 Not Applicable N NISHAN J VARTANIAN & PAMELA A VARTANIAN

1000 Cranberry Woods Drive Cranberry Township PA 16066

Common 07/30/2024 6055 1138340.00 07/31/2024 /s/ Nishan J Vartanian