X0508 4/A 2024-03-08 2024-03-12 0000066570 MSA Safety Inc MSA 0001803573 Buck Jonathan D. 1000 CRANBERRY WOODS DRIVE CRANBERRY WOODS TOWNSHIP PA 16066 1 Chief Accounting Officer 0 Common Stock, no par value 2024-03-08 4 F 0 106.0000 185.9200 D 4400.0000 D Common Stock, no par value 2024-03-08 4 F 0 185.0000 185.9200 D 4215.0000 D On March 12, 2024, the reporting person filed a Form 4 which inadvertently reported the incorrect number of shares withheld for tax purposes. The correct number of shares is reported in this amendment, together with the corrected number of owned shares after the shares withheld for tax purposes. Richard W. Roda, Attorney in Fact 2024-03-14