Mistras Group Inc

During the three months ended June 30, 2024, none of the Company's directors or officers, as defined in Section 16 of the Securities Exchange Act of 1934, adopted orterminated a "Rule 10b5-1 trading arrangement" or a "non-Rule 10b5-1 trading arrangement," as each term is defined in Item 408(a) of Regulation S-K, except as noted below.

On June 17, 2024, Michael Lange, one of the Company’s Senior Executive Vice Presidents, adopted a pre-arranged written stock sale plan in accordance with Rule 10b5-1 (the “Lange Rule 10b5-1 Plan”) under the Exchange Act, for the sale of shares of the Company’s common stock. The Lange Rule 10b5-1 Plan was entered into during an open trading window in accordance with the Company’s policies regarding transactions in the Company’s securities and is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act. The Lange Rule 10b5-1 Plan provides for the potential sale of up to 100,000 shares of the Company’s common stock at a price not less than $8.25 per share, between September 13, 2024 and December 31, 2024.