X0508 4/A 2025-03-25 2026-03-04 0 0001436126 Mistras Group, Inc. MG 0002018025 Hammad Hanei Wail 195 CLARKSVILLE RD PRINCETON JUNCTION PRINCETON JUNCTION NJ 08550 0 1 0 0 EVP & Chief Operating Officer 0 Common Stock 2025-03-25 4 F 0 6384 10.79 D 58595 D Common Stock 2026-02-25 4 A 0 29762 0 A 88357 D Represents an award of restricted stock units for payment of a performance award earned, which vest on December 31 in 2026, 2027, 2028 and 2029. This Form 4A is submitted to correct the transaction code on the above 3/25/2025 transaction from Code D to Code F, and the signature line of the attorney-in-fact. /s/Laura Boswell, attorney-in-fact for Hammad Hanei Wail 2026-03-09