Mistras Group, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| PIZZI CHARLES P | — | Gift | 2,150 | — | — | 66,618 | Dec 4, 2025 |
| D'Alterio Gennaro A. | EVP, Chief Commercial Officer | Tax Withholding | 475 | $9.53 | $4,527 | 29,035 | Sep 24, 2025 |
| Coggins Eileen Mary | EVP & Chief Legal Officer | Award / Grant | 15,000 | — | — | 15,000 | Sep 15, 2025 |
| Coggins Eileen Mary | EVP & Chief Legal Officer | Purchase | 15,000 | $9.55 | $143,250 | 15,000 | Sep 15, 2025 |
| SHUMAN-FABBRI NATALIA | President and CEO | Award / Grant | 25,000 | — | — | 25,000 | Sep 8, 2025 |
| Vahaviolos Aspasia Felice | — | W | 2,217,087 | — | — | 6,105,650 | Jul 2, 2025 |
| Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust | — | Gift | 4,685,578 | — | — | — | Jul 2, 2025 |
| Stamatakis Manuel N. | Executive Chairman | Purchase | 10,000 | $7.71 | $77,100 | 384,299 | Jun 5, 2025 |
| PIZZI CHARLES P | — | Award / Grant | 14,447 | — | — | 68,768 | May 19, 2025 |
| DEBENEDICTIS NICHOLAS | — | Award / Grant | 14,447 | — | — | 241,958 | May 19, 2025 |
| FORESE JAMES J | — | Award / Grant | 14,447 | — | — | 170,181 | May 19, 2025 |
| GLANTON RICHARD H | — | Award / Grant | 14,447 | — | — | 61,569 | May 19, 2025 |
| Lohmeier Michelle | — | Award / Grant | 14,447 | — | — | 92,361 | May 19, 2025 |
| DEBENEDICTIS NICHOLAS | — | Purchase | 8,962 | $10.04 | $89,978 | 226,473 | Mar 20, 2025 |
| D'Alterio Gennaro A. | EVP, Chief Commercial Officer | Tax Withholding | 655 | $9.84 | $6,445 | 29,510 | Mar 19, 2025 |
| Keefe Michael C | EVP, General Counsel | Tax Withholding | 1,029 | $9.84 | $10,125 | 91,558 | Mar 19, 2025 |
| Stamatakis Manuel N. | Executive Chairman | Purchase | 10,000 | $9.95 | $99,500 | 374,299 | Mar 19, 2025 |
| Prajzner Edward J | Sr. EVP and CFO | Tax Withholding | 1,303 | $9.84 | $12,822 | 121,720 | Mar 19, 2025 |
| Stamatakis Manuel N. | Executive Chairman | Award / Grant | 5,700 | — | — | 364,299 | Mar 5, 2025 |
| Keefe Michael C | EVP, General Counsel | Award / Grant | 10,455 | — | — | 91,749 | Mar 5, 2025 |
| Prajzner Edward J | Sr. EVP and CFO | Award / Grant | 4,600 | — | — | 125,138 | Mar 5, 2025 |
| D'Alterio Gennaro A. | EVP, Chief Commercial Officer | Award / Grant | 11,036 | — | — | 28,465 | Mar 5, 2025 |
| Hammad Hanei Wail | EVP & Chief Operating Officer | Award / Grant | 14,521 | — | — | 61,579 | Mar 5, 2025 |
| Keefe Michael C | EVP, General Counsel | Tax Withholding | 3,149 | $9.06 | $28,530 | 81,294 | Jan 6, 2025 |
| Prajzner Edward J | Sr. EVP and CFO | Tax Withholding | 2,756 | $9.06 | $24,969 | 97,849 | Jan 6, 2025 |
| D'Alterio Gennaro A. | EVP, Chief Commercial Officer | Tax Withholding | 571 | $11.28 | $6,441 | 17,429 | Jan 6, 2025 |
| Lange Michael J. | Senior EVP | Sale | 6,111 | $11.17 | $68,260 | 240,515 | Sep 25, 2024 |
| Lange Michael J. | Senior EVP | Sale | 12,827 | $10.79 | $138,403 | 265,176 | Sep 24, 2024 |
| Lange Michael J. | Senior EVP | Sale | 24,706 | $11.02 | $272,260 | 278,003 | Sep 20, 2024 |
| Lange Michael J. | Senior EVP | Sale | 5,013 | $10.74 | $53,840 | 314,512 | Sep 16, 2024 |
| DEBENEDICTIS NICHOLAS | — | Award / Grant | 5,705 | — | — | 207,511 | Aug 7, 2024 |
| FORESE JAMES J | — | Award / Grant | 5,705 | — | — | 155,734 | Aug 7, 2024 |
| Lohmeier Michelle | — | Award / Grant | 5,705 | — | — | 77,914 | Aug 7, 2024 |
| GLANTON RICHARD H | — | Gift | 700 | — | — | 41,417 | Aug 7, 2024 |
| PIZZI CHARLES P | — | Award / Grant | 5,705 | — | — | 54,321 | Aug 7, 2024 |
| GLANTON RICHARD H | — | Sale | 21,000 | $7.68 | $161,280 | 42,117 | Jun 20, 2024 |
| Stamatakis Manuel N. | Interim President and CEO | Award / Grant | 125,000 | — | — | 358,599 | May 14, 2024 |
| Prajzner Edward J | Sr. EVP and CFO | Tax Withholding | 838 | $9.31 | $7,802 | 101,022 | Apr 3, 2024 |
| Smith John Anthony | Executive Vice President | Tax Withholding | 1,071 | $9.67 | $10,357 | 100,447 | Apr 3, 2024 |
| Lange Michael J. | Senior EVP | Tax Withholding | 726 | $9.31 | $6,759 | 341,112 | Apr 3, 2024 |
| Keefe Michael C | EVP, General Counsel | Tax Withholding | 789 | $9.31 | $7,346 | 84,443 | Apr 3, 2024 |
| Hammad Hanei Wail | EVP & Chief Transformation Off | Award / Grant | 47,058 | — | — | 47,058 | Mar 26, 2024 |
| PIZZI CHARLES P | — | Award / Grant | 6,279 | — | — | 48,616 | Mar 13, 2024 |
| Lohmeier Michelle | — | Award / Grant | 6,279 | — | — | 72,209 | Mar 13, 2024 |
| GLANTON RICHARD H | — | Award / Grant | 6,279 | — | — | 63,117 | Mar 13, 2024 |
| FORESE JAMES J | — | Award / Grant | 6,279 | — | — | 150,029 | Mar 13, 2024 |
| DEBENEDICTIS NICHOLAS | — | Award / Grant | 6,279 | — | — | 201,806 | Mar 13, 2024 |
| Lange Michael J. | Senior EVP | Sale | 5,000 | $8.53 | $42,650 | 341,838 | Mar 12, 2024 |
| Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust | — | Gift | 2,049,140 | — | — | 4,685,578 | Mar 6, 2024 |
| Vahaviolos Sotirios J. | — | Gift | 2,049,140 | — | — | 3,890,699 | Mar 6, 2024 |