Insider holders · CIK 0001436126
Mistras Group, Inc. · MG
Every insider with a reported Table I holding at this company, ranked by their last-reported share count. A balance is only as fresh as its filing — the report date sits next to every row on purpose. ← Back to activity
| Insider | Direct shares | Indirect shares | Total reported | Last report (ET) | From |
|---|---|---|---|---|---|
| Sotirios J. VahaviolosExecutive Chairman | 10,227,673 | — | 10,227,673 | Jan 25, 2019 · 4:32 pm EST | Form 5 |
| Aspasia Felice Vahaviolos10% Owner | 2,154,541 | — | 2,154,541 | Sep 14, 2026 · 9:29 pm EDT | Form 4 |
| 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos10% Owner | 1,393,324 | 1,692 | 1,395,016 | Sep 14, 2026 · 9:29 pm EDT | Form 4 |
| Stephanie Athena Foglia10% Owner | 1,393,324 | 1,692 | 1,395,016 | Sep 14, 2026 · 9:29 pm EDT | Form 4 |
| Michael J. LangeVice Chairman and Senior EVP | 279,827 | — | 279,827 | Jan 3, 2019 · 6:27 pm EST | Form 4 |
| Mark F. CarlosGroup EVP, Products & Systems | 163,120 | — | 163,120 | Aug 18, 2016 · 7:22 pm EDT | Form 4 |
| Natalia Shuman-FabbriPresident and CEO | 123,780 | — | 123,780 | Sep 9, 2026 · 8:17 pm EDT | Form 4 |
| Dennis BertolottiPresident and CEO | 118,895 | — | 118,895 | Jan 3, 2019 · 6:17 pm EST | Form 4 |
| Manuel N. StamatakisDirector | 87,392 | — | 87,392 | Dec 21, 2018 · 2:54 pm EST | Form 4 |
| Jonathan H WolkSr. EVP and COO | 82,909 | — | 82,909 | Jan 3, 2019 · 6:35 pm EST | Form 4 |
| James J ForeseDirector | 74,822 | — | 74,822 | Aug 14, 2018 · 5:34 pm EDT | Form 4 |
| Nicholas DebenedictisDirector | 22,695 | 25,000 | 47,695 | Dec 21, 2018 · 2:55 pm EST | Form 4 |
| Gennaro A. D'AlterioEVP, Chief Commercial Officer | 46,577 | — | 46,577 | Sep 22, 2026 · 10:04 am EDT | Form 4 |
| Michael C KeefeEVP, General Counsel | 33,118 | — | 33,118 | Jan 3, 2019 · 6:23 pm EST | Form 4 |
| Richard H GlantonDirector | 19,514 | 2,110 | 21,624 | Aug 14, 2018 · 5:35 pm EDT | Form 4 |
| Ellen T RuffDirector | 14,165 | — | 14,165 | Aug 14, 2015 · 4:13 pm EDT | Form 4 |
| Eileen Mary CogginsChief Legal Officer | 13,364 | — | 13,364 | Sep 18, 2026 · 6:35 pm EDT | Form 4 |
| Wayne Curtis WeldonDirector | 13,053 | — | 13,053 | Aug 14, 2018 · 5:40 pm EDT | Form 4 |
| Ralph L. GenesiGroup EVP, Marketing and Sales | 9,909 | — | 9,909 | May 22, 2015 · 4:06 pm EDT | Form 4 |
Balances come from each insider’s most recent filing that reports a Table I holding; an insider who left the company years ago still appears with their last-known figure and its date. Indirect totals collapse multiple vehicles (trusts, LLCs) into one number — open the filing for the breakdown. Shares as filed, not split-adjusted.