0001436126 2026-06-17 2026-06-17 0001436126 1 2026-06-17 2026-06-17 0001436126 2026-01-01 2026-03-31 shares iso4217:USD pure S-8 S-8 Mistras Group, Inc. false Equity Common Stock,par value $.01 per share, reserved for issuance true 2200000 17.70 38940000 38940000 0.00013810 5377.61 5377.61 5377.61 <span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:120%;padding-left:25.52pt">This Registration Statement registers 2,200,000 additional shares of common stock, par value $.01 per share (“Common Stock”), of Mistras Group, Inc. (the “Company”) reserved and available for issuance under the Mistras Group, Inc. 2016 Long-Term Incentive Plan, as amended and restated as of March 27, 2024 and as further amended (the “Plan”), which includes 500,000 shares to allow for the recycling of shares back into the Plan in connection with share withholding or expirations, cancellations, forfeitures, or similar events with respect to Plan awards. Pursuant to Rule 416(a) under the Securities Act of 1933, as amended (the “Securities Act”), there are also registered hereby such indeterminate number of shares of Common Stock as may become issuable by reason of any stock splits, stock dividends or other similar transactions.</span><div style="margin-bottom:6pt;margin-top:6pt;padding-left:54pt"><span style="color:#000000;font-family:'Times New Roman',serif;font-size:9pt;font-weight:400;line-height:120%">Estimated pursuant to Rules 457(c) and 457(h) under the Securities Act, solely for the purpose of calculating the amount of the registration fee. The price shown is based upon the average of the high and low prices of the Company’s Common Stock, as reported on the New York Stock Exchange on June 3, 2026 (rounded to the nearest cent).</span></div> 0001436126 EX-FILING FEES N/A