X0306 4 2021-09-13 0000066570 MSA Safety Inc MSA 0001001300 RYAN JOHN T III 1000 CRANBERRY WOODS DRIVE CRANBERRY WOODS TOWNSHIP PA 16066 1 Common Stock, no par value 2021-09-13 4 S 0 120.0000 156.3500 D 987746.0000 D Common Stock, no par value 2021-09-13 4 S 0 316.0000 153.9761 D 987430.0000 D Common Stock, no par value 2021-09-13 4 S 0 617.0000 155.2673 D 986813.0000 D Common Stock, no par value 2021-09-13 4 S 0 1396.0000 153.0297 D 985417.0000 D Common Stock, no par value 228930.0000 I By Wife Common Stock, no par value 717648.0000 I Co-Trustee Share price on this transaction ranged from $156.00 to $156.42. Share price on this transaction ranged from $153.67 to $154.125. Share price on this transaction ranged from $154.77 to $155.60. Share price on this transaction ranged from $152.66 to $153.62. Shares held in trusts of which I am a trustee and in which I and members of my immediate family are among the beneficiaries. Stephanie L. Sciullo, Attorney in fact 2021-09-15