Mistras Group, Inc. (MG) · Insider trading
What Mistras Group's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$61,700
1 insider, 0% under a plan
Net, 12 months
−$61,700
bought less sold
Latest filing
2026-10-07
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Debenedictis NicholasDirector | $198,769 | – | 3 | 2025-03-20 | 227,511 |
| Stamatakis Manuel N.Director, Executive Chairman | $176,600 | – | 2 | 2025-06-05 | 384,299 |
| Coggins Eileen MaryEVP & Chief Legal Officer | $143,250 | – | 1 | 2025-09-15 | 15,000 |
| Foglia Stephanie Athena10% owner | – | $61,700 | 4 | 2026-04-17 | – |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-04-17 | Foglia Stephanie Athena10% ownerwith 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos | Saleindirect | 1,000 | 18.00 | $18,000 | 1,692 | Form 4 |
| 2026-03-03 | Foglia Stephanie Athena10% ownerwith 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos | Saleindirect | 1,000 | 15.50 | $15,500 | 2,692 | Form 4 |
| 2026-02-03 | Foglia Stephanie Athena10% ownerwith 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos | Saleindirect | 1,000 | 14.60 | $14,600 | 3,692 | Form 4 |
| 2026-01-05 | Foglia Stephanie Athena10% ownerwith 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos | Saleindirect | 1,000 | 13.60 | $13,600 | 4,692 | Form 4 |
| 2025-09-15 | Coggins Eileen MaryEVP & Chief Legal Officer | Buy | 15,000 | 9.55 | $143,250 | 15,000 | Form 4 |
| 2025-06-05 | Stamatakis Manuel N.Director, Executive Chairman | Buy | 10,000 | 7.71 | $77,100 | 384,299 | Form 4 |
| 2025-03-20 | Debenedictis NicholasDirector | Buy | 1,038 | 10.01 | $10,390 | 227,511 | Form 4 |
| 2025-03-19 | Stamatakis Manuel N.Director, Executive Chairman | Buy | 10,000 | 9.95 | $99,500 | 374,299 | Form 4 |
| 2025-03-19 | Debenedictis NicholasDirector | Buy | 8,962 | 10.04 | $89,978 | 226,473 | Form 4 |
| 2025-03-18 | Debenedictis NicholasDirector | Buy | 10,000 | 9.84 | $98,400 | 217,511 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
28 × grant or award26 × shares withheld for tax9 × gift1 × inherited1 × returned to the company
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-20 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −662 | 20.75 | 46,577 | Form 4 |
| 2026-09-18 | Coggins Eileen MaryChief Legal Officer | Shares withheld for tax F | −1,636 | 19.66 | 13,364 | Form 4 |
| 2026-09-10 | Vahaviolos Aspasia Felice10% owner | Gift G | +387,093 | – | 2,160,790 | Form 4/A |
| 2026-09-10 | Foglia Stephanie Athena10% owner | Gift G | −387,093 | – | 3,923,718 | Form 4 |
| 2026-09-08 | Shuman-Fabbri NataliaDirector, President and CEO | Shares withheld for tax F | −2,410 | 19.42 | 123,780 | Form 4 |
| 2026-06-10 | Foglia Stephanie Athena10% owner | Gift G | −411,875 | – | 4,310,811 | Form 4 |
| 2026-06-10 | Vahaviolos Aspasia Felice10% owner | Gift G | +411,875 | – | 1,794,839 | Form 4 |
| 2026-05-19 | Pizzi Charles PDirector | Grant or award A | +6,862 | – | 73,480 | Form 4 |
| 2026-05-19 | Lohmeier MichelleDirector | Grant or award A | +6,862 | – | 99,223 | Form 4 |
| 2026-05-19 | Forese James JDirector | Grant or award A | +6,862 | – | 177,043 | Form 4 |
| 2026-05-19 | Glanton Richard HDirector | Grant or award A | +6,862 | – | 68,431 | Form 4 |
| 2026-05-19 | Debenedictis NicholasDirector | Grant or award A | +6,862 | – | 248,820 | Form 4 |
| 2026-04-27 | Foglia Stephanie Athena10% owner | Gift G | −528,672 | – | 4,722,686 | Form 4 |
| 2026-03-26 | Hammad Hanei WailEVP & Chief Operating Officer | Shares withheld for tax F | −2,865 | 15.10 | 61,777 | Form 4 |
| 2026-03-22 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −1,367 | 14.05 | 148,076 | Form 4 |
| 2026-03-16 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −2,239 | 14.61 | 149,443 | Form 4 |
| 2026-03-07 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −2,540 | 14.82 | 151,682 | Form 4 |
| 2026-03-04 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −184 | 15.68 | 47,239 | Form 4 |
| 2026-03-04 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −698 | 15.68 | 154,222 | Form 4 |
| 2026-03-04 | Hammad Hanei WailEVP & Chief Operating Officer | Shares withheld for tax F | −337 | 15.68 | 64,642 | Form 4 |
| 2026-03-04 | Stamatakis Manuel N.Director, Executive Chairman | Shares withheld for tax F | −814 | 15.68 | 509,795 | Form 4 |
| 2026-02-28 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −1,303 | 15.28 | 154,920 | Form 4 |
| 2026-02-28 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −655 | 15.28 | 48,285 | Form 4 |
| 2026-02-28 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −862 | 15.28 | 47,423 | Form 4 |
| 2026-02-25 | Hammad Hanei WailEVP & Chief Operating Officer | Grant or award A | +29,762 | – | 88,357 | Form 4/A |
| 2026-02-25 | Prajzner Edward JSr. EVP and CFO | Grant or award A | +37,202 | – | 156,223 | Form 4 |
| 2026-02-25 | Stamatakis Manuel N.Director, Executive Chairman | Grant or award A | +86,310 | – | 510,609 | Form 4 |
| 2026-02-25 | Shuman-Fabbri NataliaDirector, President and CEO | Grant or award A | +101,190 | – | 126,190 | Form 4 |
| 2026-02-25 | Coggins Eileen MaryEVP, General Counsel | Grant or award A | +7,242 | – | 22,242 | Form 4 |
| 2026-02-25 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Grant or award A | +19,905 | – | 48,940 | Form 4 |
| 2026-01-05 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −2,699 | 12.65 | 119,021 | Form 4/A |
| 2026-01-02 | Stamatakis Manuel N.Director, Executive Chairman | Grant or award A | +40,000 | – | 424,299 | Form 4/A |
| 2025-12-31 | Vahaviolos Aspasia Felice10% owner | Gift G | +528,672 | – | 1,382,964 | Form 4 |
| 2025-12-31 | Vahaviolos Aspasia Felice10% owner | Gift G | −5,251,358 | – | 854,292 | Form 4 |
| 2025-12-04 | Pizzi Charles PDirector | Gift G | −2,150 | – | 66,618 | Form 4 |
| 2025-09-24 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −475 | 9.53 | 29,035 | Form 4 |
| 2025-09-15 | Coggins Eileen MaryEVP & Chief Legal Officer | Grant or award A | +15,000 | – | 15,000 | Form 4/A |
| 2025-09-08 | Shuman-Fabbri NataliaDirector, President and CEO | Grant or award A | +25,000 | – | 25,000 | Form 4 |
| 2025-07-02 | Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust10% owner | Gift G | −4,685,578 | – | 0 | Form 4 |
| 2025-07-02 | Vahaviolos Aspasia Felice10% owner | Inherited W | +2,217,087 | – | 6,105,650 | Form 4 |
| 2025-05-19 | Lohmeier MichelleDirector | Grant or award A | +14,447 | – | 92,361 | Form 4 |
| 2025-05-19 | Glanton Richard HDirector | Grant or award A | +14,447 | – | 61,569 | Form 4 |
| 2025-05-19 | Forese James JDirector | Grant or award A | +14,447 | – | 170,181 | Form 4 |
| 2025-05-19 | Debenedictis NicholasDirector | Grant or award A | +14,447 | – | 241,958 | Form 4 |
| 2025-05-19 | Pizzi Charles PDirector | Grant or award A | +14,447 | – | 68,768 | Form 4 |
| 2025-03-25 | Hammad Hanei WailEVP & Chief Operating Officer | Shares withheld for tax F | −6,384 | 10.79 | 58,595 | Form 4/A |
| 2025-03-25 | Hammad Hanei WailEVP & Chief Operating Officer | Returned to the company D | −6,384 | 10.79 | 58,595 | Form 4 |
| 2025-03-19 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −626 | 10.00 | 124,512 | Form 4 |
| 2025-03-19 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −1,489 | 10.00 | 123,023 | Form 4 |
| 2025-03-19 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −1,303 | 9.84 | 121,720 | Form 4 |
| 2025-03-19 | Keefe Michael CEVP, General Counsel | Shares withheld for tax F | −762 | 10.00 | 92,587 | Form 4 |
| 2025-03-19 | Keefe Michael CEVP, General Counsel | Shares withheld for tax F | −1,029 | 9.84 | 91,558 | Form 4 |
| 2025-03-19 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −655 | 9.84 | 29,510 | Form 4 |
| 2025-03-05 | Hammad Hanei WailEVP & Chief Operating Officer | Grant or award A | +14,521 | – | 61,579 | Form 4 |
| 2025-03-05 | Hammad Hanei WailEVP & Chief Operating Officer | Grant or award A | +3,400 | – | 64,979 | Form 4 |
| 2025-03-05 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Grant or award A | +11,036 | – | 28,465 | Form 4 |
| 2025-03-05 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Grant or award A | +1,700 | – | 30,165 | Form 4 |
| 2025-03-05 | Prajzner Edward JSr. EVP and CFO | Grant or award A | +22,689 | – | 120,538 | Form 4 |
| 2025-03-05 | Prajzner Edward JSr. EVP and CFO | Grant or award A | +4,600 | – | 125,138 | Form 4 |
| 2025-03-05 | Keefe Michael CEVP, General Counsel | Grant or award A | +10,455 | – | 91,749 | Form 4 |
| 2025-03-05 | Keefe Michael CEVP, General Counsel | Grant or award A | +1,600 | – | 93,349 | Form 4 |
| 2025-03-05 | Stamatakis Manuel N.Director, Executive Chairman | Grant or award A | +5,700 | – | 364,299 | Form 4 |
| 2025-01-06 | D'Alterio Gennaro A.EVP, Chief Commercial Officer | Shares withheld for tax F | −571 | 11.28 | 17,429 | Form 4 |
| 2025-01-06 | Prajzner Edward JSr. EVP and CFO | Shares withheld for tax F | −2,756 | 9.06 | 97,849 | Form 4 |
| 2025-01-06 | Keefe Michael CEVP, General Counsel | Shares withheld for tax F | −3,149 | 9.06 | 81,294 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.