MGNYSEServices-Engineering ServicesFiscal year ends December 31
Mistras Group, Inc.
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 10, 2026
$21.44−0.02 (-0.09%)
Close on Oct 19, 2026
- Market cap
- $705.89M
- P/E (TTM)
- 25.8
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
62.4%
20M of 32M shares
Institutional holders
138
26 new, 16 sold out
Net institutional buying
2M
In Q2 2026
Insider trades, 12 months
0 buys · 4 sales
Net sold $61.70K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust | 6,734,718 | 22.00% | 13D (active) amendment | Dec 31, 2023 |
| Aspasia Vahaviolos | 6,105,650 | 19.32% | 13G (passive) | Dec 31, 2025 |
| Aspasia Felice Vahaviolos | 6,084,508 | 19.10% | 13D (active) amendment | Sep 17, 2026 |
| Stephanie Foglia | 5,917,135 | 18.60% | 13D (active) amendment | Jun 10, 2026 |
| Stephanie Athena Foglia | 5,532,313 | 17.40% | 13D (active) amendment | Sep 10, 2026 |
| Thomas E. Lynch | 1,938,316 | 6.10% | 13D (active) amendment | Sep 16, 2026 |
| Sotirios J. Vahaviolos | 1,841,559 | – | 13G (passive) amendment | Dec 31, 2023 |
| Dimensional Fund Advisors LP | 1,623,141 | 5.20% | 13G (passive) | Jun 30, 2025 |
| Kristy Kyriakopoulos | 1,617,006 | 5.12% | 13G (passive) amendment | Jul 8, 2025 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of MG | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Mill Road Capital Management LLC | 1,929,509 | 6.06% | $33.71M | +58,929 | 16.64% |
| Dimensional Fund Advisors LP | 1,700,793 | 5.34% | $29.72M | −2,888 | 0.01% |
| Royce & Associates LP | 1,580,728 | 4.96% | $27.62M | +47,676 | 0.22% |
| Weber Capital Management LLC /Adv | 1,448,154 | 4.55% | $25.30M | −8,815 | 21.53% |
| BlackRock, Inc. | 1,166,197 | 3.66% | $20.37M | +306,745 | 0.00% |
| IES Holdings, Inc. | 1,124,235 | 3.53% | $19.64M | +3,690 | 6.32% |
| First Eagle Investment Management, LLC | 1,107,710 | 3.48% | $19.35M | +826,178 | 0.02% |
| Vanguard Capital Management LLC | 1,052,512 | 3.30% | $18.39M | +122,334 | 0.00% |
| Federated Hermes, Inc. | 656,032 | 2.06% | $11.46M | – | 0.02% |
| Geode Capital Management, LLC | 510,059 | 1.60% | $8.91M | +156,648 | 0.00% |
| Deutsche Bank AG\ | 389,488 | 1.22% | $6.80M | +10,034 | 0.00% |
| State Street Corp | 385,924 | 1.21% | $6.74M | +73,760 | 0.00% |
| Bridgeway Capital Management, LLC | 354,371 | 1.11% | $6.19M | – | 0.11% |
| Pacific Ridge Capital Partners, LLC | 282,880 | 0.89% | $4.94M | −2,394 | 0.90% |
| Acadian Asset Management LLC | 276,512 | 0.87% | $4.83K | +118,177 | 0.01% |
| Qube Research & Technologies Ltd | 275,749 | 0.87% | $4.82M | +57,703 | 0.00% |
| CSM Advisors, LLC | 267,586 | 0.84% | $4.67K | −295 | 0.10% |
| Clearline Capital LP | 267,460 | 0.84% | $4.67M | −286,629 | 0.28% |
| Essex Investment Management Co LLC | 257,127 | 0.81% | $4.49M | −11,440 | 0.59% |
| Algert Global LLC | 232,669 | 0.73% | $4.06M | +53,379 | 0.05% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 138 | 20M | 62.4% | 26 / 58 | 30 / 16 | 3M | 1M |
| Q1 2026 | 129 | 18M | 57.4% | 19 / 39 | 48 / 12 | 3M | 1M |
| Q4 2025 | 123 | 18M | 55.4% | 23 / 36 | 45 / 10 | 4M | 2M |
| Q3 2025 | 111 | 16M | 50.0% | 14 / 30 | 44 / 11 | 2M | 2M |
| Q2 2025 | 108 | 16M | 49.4% | 17 / 32 | 38 / 16 | 2M | 1M |
| Q1 2025 | 109 | 15M | 47.6% | 18 / 32 | 39 / 15 | 2M | 1M |
| Q4 2024 | 108 | 15M | 46.7% | 19 / 34 | 36 / 15 | 1M | 1M |
| Q3 2024 | 106 | 15M | 47.4% | 24 / 38 | 20 / 7 | 3M | 1M |
| Q2 2024 | 90 | 14M | 45.1% | 16 / 31 | 28 / 9 | 1M | 1M |
| Q1 2024 | 83 | 15M | 45.9% | 10 / 30 | 27 / 6 | 1M | 1M |
| Q4 2023 | 79 | 15M | 45.6% | 8 / 27 | 28 / 6 | 1M | 1M |
| Q3 2023 | 77 | 15M | 46.3% | 10 / 24 | 26 / 11 | 1M | 1M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of MG | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 813,148 | 2.55% | $14.21M | 0.00% | Jun 30, 2026 |
| Royce Small-Cap Opportunity Fund | 556,302 | 1.75% | $9.72M | 0.69% | Jun 30, 2026 |
| First Eagle Small Cap Opportunity Fund | 536,690 | 1.69% | $8.16M | 0.28% | Jul 31, 2026 |
| Federated Hermes MDT Small Cap Core Fund | 499,192 | 1.57% | $7.59M | 0.34% | Jul 31, 2026 |
| iShares Russell 2000 ETF | 439,633 | 1.38% | $7.68M | 0.01% | Jun 30, 2026 |
| U.S. Small Cap Value Portfolio | 384,585 | 1.21% | $5.85M | 0.03% | Jul 31, 2026 |
| DWS Small Cap Core Fund | 372,214 | 1.17% | $6.50M | 0.56% | Jun 30, 2026 |
| U.S. Targeted Value Portfolio | 238,101 | 0.75% | $3.62M | 0.02% | Jul 31, 2026 |
| EA Bridgeway Omni Small-Cap Value ETF | 225,494 | 0.71% | $3.94M | 0.16% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 214,613 | 0.67% | $3.75M | 0.00% | Jun 30, 2026 |
| Dimensional U.S. Targeted Value ETF | 204,045 | 0.64% | $3.10M | 0.02% | Jul 31, 2026 |
| Fidelity Small Cap Index Fund | 190,734 | 0.60% | $2.90M | 0.01% | Jul 31, 2026 |
| Federated Hermes MDT Small Cap Growth Fund | 156,840 | 0.49% | $2.39M | 0.29% | Jul 31, 2026 |
| U.S. Small Cap Portfolio | 136,415 | 0.43% | $2.07M | 0.01% | Jul 31, 2026 |
| Knights of Columbus Small Cap Equity Fund | 129,884 | 0.41% | $1.98M | 0.94% | Jul 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Natalia Shuman-Fabbri | President and CEO, Director | 123,780 | 0.39% | Sep 9, 2026 |
| Manuel N. Stamatakis | Executive Chairman, Director | 509,795 | 1.60% | Mar 10, 2026 |
| Gennaro A. D'Alterio | EVP, Chief Commercial Officer | 46,577 | 0.15% | Sep 22, 2026 |
| Eileen Mary Coggins | Chief Legal Officer | 13,364 | 0.04% | Sep 18, 2026 |
| Hanei Wail Hammad | EVP & Chief Operating Officer | 61,777 | 0.19% | Mar 26, 2026 |
| Edward J. Prajzner | Sr. EVP and CFO | 148,076 | 0.46% | Mar 23, 2026 |
| Michael C. Keefe | EVP, General Counsel | 91,558 | 0.29% | Mar 20, 2025 |
| Richard H. Glanton | Director | 71,241 | 0.22% | May 21, 2026 |
| Charles P. Pizzi | Director | 73,480 | 0.23% | May 21, 2026 |
| James J. Forese | Director | 177,043 | 0.56% | May 21, 2026 |
| Michelle Lohmeier | Director | 99,223 | 0.31% | May 21, 2026 |
| Nicholas Debenedictis | Director | 273,820 | 0.86% | May 21, 2026 |
| Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos 2025 | 10% owner | 5,334,100 | 16.75% | Sep 14, 2026 |
| Stephanie Athena Foglia | 10% owner | 5,758,374 | 18.08% | Sep 14, 2026 |
| Aspasia Felice Vahaviolos | 10% owner | 2,154,541 | 6.76% | Sep 14, 2026 |
| Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust Sotirios | 10% owner | 0 | – | Sep 10, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Sep 20, 2026 | Tax withholding | −662 | $20.75 | $13.74K | 46,577 |
| Eileen Mary Coggins Chief Legal Officer | Sep 18, 2026 | Tax withholding | −1,636 | $19.66 | $32.16K | 13,364 |
| Aspasia Felice Vahaviolos 10% owner | Sep 10, 2026 | Gift | +387,093 | – | – | 2,154,541 |
| Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos 2025 10% owner | Sep 10, 2026 | Gift | −387,093 | – | – | 3,923,718 |
| Natalia Shuman-Fabbri President and CEO, Director | Sep 8, 2026 | Tax withholding | −2,410 | $19.42 | $46.80K | 123,780 |
| Stephanie Athena Foglia 10% owner | Jun 10, 2026 | Gift | −411,875 | – | – | 4,310,811 |
| Aspasia Felice Vahaviolos 10% owner | Jun 10, 2026 | Gift | +411,875 | – | – | 1,794,839 |
| Nicholas Debenedictis Director | May 19, 2026 | Award | +6,862 | – | – | 248,820 |
| Charles P. Pizzi Director | May 19, 2026 | Award | +6,862 | – | – | 73,480 |
| James J. Forese Director | May 19, 2026 | Award | +6,862 | – | – | 177,043 |
| Richard H. Glanton Director | May 19, 2026 | Award | +6,862 | – | – | 68,431 |
| Michelle Lohmeier Director | May 19, 2026 | Award | +6,862 | – | – | 99,223 |
| Stephanie Athena Foglia 10% owner | Apr 27, 2026 | Gift | −528,672 | – | – | 4,722,686 |
| Stephanie Athena Foglia 10% owner | Apr 17, 2026 | Sale | −1,000 | $18.00 | $18.00K | 1,692 |
| Hanei Wail Hammad EVP & Chief Operating Officer | Mar 26, 2026 | Tax withholding | −2,865 | $15.10 | $43.26K | 61,777 |
| Edward J. Prajzner Sr. EVP and CFO | Mar 22, 2026 | Tax withholding | −1,367 | $14.05 | $19.21K | 148,076 |
| Edward J. Prajzner Sr. EVP and CFO | Mar 16, 2026 | Tax withholding | −2,239 | $14.61 | $32.71K | 149,443 |
| Edward J. Prajzner Sr. EVP and CFO | Mar 7, 2026 | Tax withholding | −2,540 | $14.82 | $37.64K | 151,682 |
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Mar 4, 2026 | Tax withholding | −184 | $15.68 | $2.89K | 47,239 |
| Hanei Wail Hammad EVP & Chief Operating Officer | Mar 4, 2026 | Tax withholding | −337 | $15.68 | $5.28K | 64,642 |
| Edward J. Prajzner Sr. EVP and CFO | Mar 4, 2026 | Tax withholding | −698 | $15.68 | $10.94K | 154,222 |
| Manuel N. Stamatakis Executive Chairman, Director | Mar 4, 2026 | Tax withholding | −814 | $15.68 | $12.76K | 509,795 |
| Stephanie Athena Foglia 10% owner | Mar 3, 2026 | Sale | −1,000 | $15.50 | $15.50K | 2,692 |
| Edward J. Prajzner Sr. EVP and CFO | Feb 28, 2026 | Tax withholding | −1,303 | $15.28 | $19.91K | 154,920 |
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Feb 28, 2026 | Tax withholding | −655 | $15.28 | $10.01K | 48,285 |
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Feb 28, 2026 | Tax withholding | −862 | $15.28 | $13.17K | 47,423 |
| Hanei Wail Hammad EVP & Chief Operating Officer | Feb 25, 2026 | Award | +29,762 | – | – | 88,357 |
| Natalia Shuman-Fabbri President and CEO, Director | Feb 25, 2026 | Award | +101,190 | – | – | 126,190 |
| Manuel N. Stamatakis Executive Chairman, Director | Feb 25, 2026 | Award | +86,310 | – | – | 510,609 |
| Edward J. Prajzner Sr. EVP and CFO | Feb 25, 2026 | Award | +37,202 | – | – | 156,223 |
| Eileen Mary Coggins EVP, General Counsel | Feb 25, 2026 | Award | +7,242 | – | – | 22,242 |
| Hanei Wail Hammad EVP & Chief Operating Officer | Feb 25, 2026 | Award | +29,762 | – | – | 88,357 |
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Feb 25, 2026 | Award | +19,905 | – | – | 48,940 |
| Stephanie Athena Foglia 10% owner | Feb 3, 2026 | Sale | −1,000 | $14.60 | $14.60K | 3,692 |
| Stephanie Athena Foglia 10% owner | Jan 5, 2026 | Sale | −1,000 | $13.60 | $13.60K | 4,692 |
| Edward J. Prajzner Sr. EVP and CFO | Jan 5, 2026 | Tax withholding | −2,699 | $12.65 | $34.14K | 119,021 |
| Edward J. Prajzner Sr. EVP and CFO | Jan 5, 2026 | Tax withholding | −2,699 | $12.65 | $34.14K | 119,021 |
| Manuel N. Stamatakis Executive Chairman, Director | Jan 2, 2026 | Award | +40,000 | – | – | 424,299 |
| Manuel N. Stamatakis Executive Chairman, Director | Jan 2, 2026 | Award | +40,000 | – | – | 424,299 |
| Aspasia Felice Vahaviolos 10% owner | Dec 31, 2025 | Gift | +528,672 | – | – | 1,382,964 |
| Aspasia Felice Vahaviolos 10% owner | Dec 31, 2025 | Gift | −5,251,358 | – | – | 854,292 |
| Charles P. Pizzi Director | Dec 4, 2025 | Gift | −2,150 | – | – | 66,618 |
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Sep 24, 2025 | Tax withholding | −475 | $9.53 | $4.53K | 29,035 |
| Eileen Mary Coggins EVP & Chief Legal Officer | Sep 15, 2025 | Award | +15,000 | – | – | 15,000 |
| Eileen Mary Coggins EVP & Chief Legal Officer | Sep 15, 2025 | Buy | +15,000 | $9.55 | $143.25K | 15,000 |
| Natalia Shuman-Fabbri President and CEO, Director | Sep 8, 2025 | Award | +25,000 | – | – | 25,000 |
| Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust Sotirios 10% owner | Jul 2, 2025 | Gift | −4,685,578 | – | – | 0 |
| Aspasia Felice Vahaviolos 10% owner | Jul 2, 2025 | Inheritance | +2,217,087 | – | – | 6,105,650 |
| Manuel N. Stamatakis Executive Chairman, Director | Jun 5, 2025 | Buy | +10,000 | $7.71 | $77.10K | 384,299 |
| Michelle Lohmeier Director | May 19, 2025 | Award | +14,447 | – | – | 92,361 |
| Nicholas Debenedictis Director | May 19, 2025 | Award | +14,447 | – | – | 241,958 |
| Richard H. Glanton Director | May 19, 2025 | Award | +14,447 | – | – | 61,569 |
| James J. Forese Director | May 19, 2025 | Award | +14,447 | – | – | 170,181 |
| Charles P. Pizzi Director | May 19, 2025 | Award | +14,447 | – | – | 68,768 |
| Hanei Wail Hammad EVP & Chief Operating Officer | Mar 25, 2025 | Tax withholding | −6,384 | $10.79 | $68.88K | 58,595 |
| Hanei Wail Hammad EVP & Chief Operating Officer | Mar 25, 2025 | Returned to company | −6,384 | $10.79 | $68.88K | 58,595 |
| Nicholas Debenedictis Director | Mar 20, 2025 | Buy | +1,038 | $10.01 | $10.39K | 227,511 |
| Gennaro A. D'Alterio EVP, Chief Commercial Officer | Mar 19, 2025 | Tax withholding | −655 | $9.84 | $6.45K | 29,510 |
| Manuel N. Stamatakis Executive Chairman, Director | Mar 19, 2025 | Buy | +10,000 | $9.95 | $99.50K | 374,299 |
| Nicholas Debenedictis Director | Mar 19, 2025 | Buy | +8,962 | $10.04 | $89.98K | 226,473 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Michael J. Lange Officer | Sep 16, 2024 | 100,000 | $5.45M | Sep 16, 2024 | COMPENSATION |
| Richard H. Glanton Director | Jun 20, 2024 | 1,000 | $7.84K | Jun 20, 2024 | Directors Compensation |
| Richard H. Glanton Director | Jun 18, 2024 | 20,000 | $161.60K | Jun 18, 2024 | Directors Compensation |
| Michael J. Lange Officer | May 24, 2024 | 10,000 | $86.00K | May 23, 2024 | PERFORMANCE SHARES |
| Michael J. Lange Director | Mar 14, 2024 | 5,338 | $44.04K | Mar 14, 2024 | PERFORMANCE SHARES |
| Michael J. Lange Officer | Mar 12, 2024 | 5,000 | $41.25K | Mar 12, 2024 | PERFORMANCE SHARES |
| John Anthony Smith Officer | Nov 15, 2023 | 10,018 | $62.98K | Nov 14, 2023 | RESTRICTED STOCK |