Skip to main content

Mistras Group, Inc.

MG
Exchange
NYSE
Industry
Services-Engineering Services
SEC CIK
0001436126

No open-market purchases or sales by Mistras Group, Inc. insiders were filed in the last 90 days; 137 institutions reported holding it in 13F filings for Q2 2026, worth $347.1M in total; no superinvestor holds it.

Open-market trades, last 90 days

Open-market purchases (P) and sales (S) by Mistras Group, Inc. insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.

Open-market buys
0 filings
Open-market sells
0 filings
Insiders trading
0
Net value
$0
Purchases minus sales

Insider roster

Directors, officers and 10% owners who have filed a Form 4 for Mistras Group, Inc., current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.

Insider roster for Mistras Group, Inc.
NameTitleLast reported holdingLast filingFilings, past year
D'Alterio Gennaro A.EVP, Chief Commercial Officer46,577Sep 22, 20264
Coggins Eileen MaryChief Legal Officer13,364Sep 18, 20263
Vahaviolos Aspasia Felice10% Owner2,154,541Sep 14, 20264
Foglia Stephanie Athena10% Owner3,923,718IndirectSep 14, 20263
2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos10% Owner3,923,718IndirectSep 14, 20263
Shuman-Fabbri NataliaPresident and CEO123,780Sep 9, 20262
Glanton Richard HDirector68,431May 21, 20261
Forese James JDirector177,043May 21, 20261
Pizzi Charles PDirector73,480May 21, 20262
Debenedictis NicholasDirector248,820May 21, 20261
Lohmeier MichelleDirector99,223May 21, 20261
Hammad Hanei WailEVP & Chief Operating Officer61,777Mar 26, 20263
Prajzner Edward JSr. EVP and CFO148,076Mar 23, 20265
Stamatakis Manuel N.Executive Chairman509,795Mar 10, 20263
Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust10% Owner0Sep 10, 20250
Keefe Michael CEVP, General Counsel91,558Mar 20, 20250
Lange Michael J.Senior EVP240,515Sep 25, 20240
Vahaviolos Sotirios J.Director, 10% Owner10,352,803Aug 19, 20240
Smith John AnthonyExecutive Vice President100,447Apr 5, 20240
Bertolotti DennisPresident and CEO424,358Mar 30, 20230
Wolk Jonathan HSr. EVP and COO194,575Jan 3, 20230

Insider trades

Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.

Insider trades
Filed (ET)Trade dateFiling delayInsiderTransactionSharesAvg priceValueHolding changeFlags
Jun 4, 2026 (view filing)4:07 PM ETJan 5-Apr 17150 daysLateFoglia Stephanie Athena and 1 other10% OwnerSSale−4.00K$15.43−$61.7K−70.3%1.69K after4 lots
Jun 6, 2025 (view filing)Jun 51 dayStamatakis Manuel N.Executive ChairmanPPurchase+10.0K$7.71+$77.1K+2.7%384.3K after
Mar 20, 2025 (view filing)Mar 18-202 daysDebenedictis NicholasDirectorPPurchase+20.0K$9.94+$198.8K+9.7%226.5K after3 lots
Mar 20, 2025 (view filing)Mar 191 dayStamatakis Manuel N.Executive ChairmanPPurchase+10.0K$9.95+$99.5K+2.7%374.3K after
Sep 25, 2024 (view filing)Sep 25Same dayLange Michael J.Senior EVPSSale−6.11K$11.17−$68.3K−2.5%240.5K after10b5-1
Sep 24, 2024 (view filing)Sep 23-241 dayLange Michael J.Senior EVPSSale−31.4K$11.13−$349.1K−11.3%246.6K after2 lots10b5-1
Sep 20, 2024 (view filing)Sep 20Same dayLange Michael J.Senior EVPSSale−24.7K$11.02−$272.3K−8.2%278.0K after10b5-1
Sep 20, 2024 (view filing)Sep 16-194 daysLateLange Michael J.Senior EVPSSale−37.8K$10.69−$404.2K−11.1%302.7K after4 lots10b5-1
Jun 20, 2024 (view filing)Jun 20Same dayGlanton Richard HDirectorSSale−21.0K$7.68−$161.3K−33.3%42.1K after
Mar 27, 2024 (view filing)Nov 7, 2023141 daysLateStamatakis Manuel N.Interim President and CEOPPurchase+15.0K$6.00+$90.0K+6.9%233.6K after
Mar 14, 2024 (view filing)Mar 122 daysLange Michael J.Senior EVPSSale−5.00K$8.53−$42.6K−1.4%341.8K after
Dec 20, 2023 (view filing)Dec 20Same dayDebenedictis NicholasDirectorPPurchase+3.00K$7.05+$21.1K+1.6%195.5K after
Dec 13, 2023 (view filing)Dec 11-132 daysDebenedictis NicholasDirectorPPurchase+2.10K$6.60+$13.8K+1.1%192.5K after2 lots
Nov 15, 2023 (view filing)Nov 141 daySmith John AnthonyExecutive Vice PresidentSSale−10.0K$6.29−$63.0K−9.6%94.5K after
Nov 9, 2023 (view filing)Nov 8-91 dayDebenedictis NicholasDirectorPPurchase+3.80K$5.94+$22.6K+2.1%186.7K after2 lots
Mar 25, 2022 (view filing)Mar 25Same dayGlanton Richard HDirectorPPurchase+753$6.37+$4.80K+3.4%23.0K after
Sep 24, 2021 (view filing)Sep 204 daysLateGlanton Richard HDirectorSSale−4.36K$9.04−$39.4K−16.4%22.2K after
Aug 19, 2021 (view filing)Aug 172 daysStamatakis Manuel N.DirectorPPurchase+5.00K$9.62+$48.1K+2.8%184.7K after