Aspasia Vahaviolos Files Schedule 13G for Mistras Group, Inc.

Aspasia Vahaviolos, a United States citizen, has filed a Schedule 13G with the SEC, disclosing beneficial ownership of 6,105,650 shares of common stock in Mistras Group, Inc., representing 19.4% of the outstanding shares as of August 6, 2025. The filing indicates that Vahaviolos has sole voting and dispositive power over these shares. The Schedule 13G was filed pursuant to Rule 13d-1(c) and includes a Power of Attorney appointing Michael Keefe, Edward Prajzner, and Michael Kozole as attorneys-in-fact to handle SEC filings related to Vahaviolos's ownership of Mistras Group securities. The Power of Attorney remains in effect until Vahaviolos is no longer required to file such reports.