Company · CIK 0001436126 · SIC 8711 — Services-Engineering Services · NYSE
Mistras Group, Inc. · MG
Insider activity reported against this company. All insider holders · On EDGAR ↗
Reported at this company — common stock
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Sep 20, 2026 FForm 4 → | Sep 22, 10:04 am EDT | Gennaro A. D'AlterioEVP, Chief Commercial Officer | 662 | $20.75 | $13,737 | 46,577 | — | |
| Sep 18, 2026 FForm 4 → | Sep 18, 6:35 pm EDT | Eileen Mary CogginsChief Legal Officer | 1,636 | $19.66 | $32,164 | 13,364 | — | |
| Sep 10, 2026 GForm 4 → | Sep 14, 9:29 pm EDT | Aspasia Felice Vahaviolos10% Owner | 387,093 | — | — | 2,154,541 | — | |
| Sep 10, 2026 GForm 4 → | Sep 14, 9:29 pm EDT | Stephanie Athena Foglia +110% Owner | 387,093 | — | — | 3,923,718 | — | |
| Sep 8, 2026 FForm 4 → | Sep 9, 8:17 pm EDT | Natalia Shuman-FabbriPresident and CEO, Director | 2,410 | $19.42 | $46,802 | 123,780 | — | |
| Jun 10, 2026 GForm 4 → | Jun 12, 4:52 pm EDT | Stephanie Athena Foglia +110% Owner | 411,875 | — | — | 4,310,811 | — | |
| Jun 10, 2026 GForm 4 → | Jun 12, 4:51 pm EDT | Aspasia Felice Vahaviolos10% Owner | 411,875 | — | — | 1,794,839 | — | |
| Apr 27, 2026 GForm 4 → | Jun 4, 4:07 pm EDT | Stephanie Athena Foglia +110% Owner | 528,672 | — | — | 4,722,686 | — | late |
| Jan 5, 2026 SForm 4 → | Jun 4, 4:07 pm EDT | Stephanie Athena Foglia +110% Owner | 4,000 | $15.43 | $61,700 | 1,692 | −70.3% | late |
| Dec 31, 2025 GForm 4 → | Jun 4, 2026, 4:08 pm EDT | Aspasia Felice Vahaviolos10% Owner | 528,672 | — | — | 1,382,964 | — | late |
| Jan 2, 2019 FForm 4 → | Jan 3, 6:35 pm EST | Jonathan H WolkSr. EVP and COO | 455 | $14.38 | $6,543 | 82,909 | — | plan? |
| Jan 2, 2019 FForm 4 → | Jan 3, 6:31 pm EST | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 854 | $14.38 | $12,281 | 10,243,459 | — | plan? |
| Jan 2, 2019 FForm 4 → | Jan 3, 6:27 pm EST | Michael J. LangeVice Chairman and Senior EVP, Director | 442 | $14.38 | $6,356 | 279,827 | — | plan? |
| Jan 2, 2019 FForm 4 → | Jan 3, 6:23 pm EST | Michael C KeefeEVP, General Counsel | 224 | $14.38 | $3,221 | 33,118 | — | plan? |
| Jan 2, 2019 FForm 4 → | Jan 3, 6:17 pm EST | Dennis BertolottiPresident and CEO, Director | 621 | $14.38 | $8,930 | 118,895 | — | plan? |
| Dec 20, 2018 GForm 5 → | Jan 25, 2019, 4:32 pm EST | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 16,640 | — | — | 10,227,673 | — | plan? |
| Dec 19, 2018 PForm 4 → | Dec 21, 2:55 pm EST | Nicholas DebenedictisDirector | 10,000 | $14.81 | $148,056 | 25,000 | +66.7% | plan? |
| Dec 18, 2018 PForm 4 → | Dec 21, 2:54 pm EST | Manuel N. StamatakisDirector | 25,000 | $14.50 | $362,600 | 87,392 | +40.1% | plan? late |
| Oct 22, 2018 FForm 4 → | Oct 22, 4:33 pm EDT | Michael C KeefeEVP, General Counsel | 5,019 | $19.59 | $98,322 | 33,342 | — | plan? |
| Oct 22, 2018 FForm 4 → | Oct 22, 4:32 pm EDT | Dennis BertolottiPresident and CEO, Director | 9,400 | $19.59 | $184,146 | 119,516 | — | plan? |
| Oct 22, 2018 FForm 4 → | Oct 22, 4:30 pm EDT | Jonathan H WolkSr. EVP and COO | 7,149 | $19.59 | $140,049 | 83,364 | — | plan? |
| Oct 22, 2018 FForm 4 → | Oct 22, 4:27 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 8,114 | $19.59 | $158,953 | 280,269 | — | plan? |
| Aug 17, 2018 FForm 4 → | Aug 20, 5:58 pm EDT | Jonathan H WolkSr. EVP and COO | 511 | $21.81 | $11,145 | 90,513 | — | plan? |
| Aug 17, 2018 FForm 4 → | Aug 20, 5:53 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 531 | $21.81 | $11,581 | 288,383 | — | plan? |
| Aug 17, 2018 FForm 4 → | Aug 20, 5:48 pm EDT | Dennis BertolottiPresident and CEO, Director | 1,147 | $21.81 | $25,016 | 128,916 | — | plan? |
| Aug 13, 2018 AForm 4 → | Aug 14, 5:40 pm EDT | Wayne Curtis WeldonDirector | 1,772 | — | — | 13,053 | — | plan? |
| Aug 13, 2018 AForm 4 → | Aug 14, 5:39 pm EDT | Manuel N. StamatakisDirector | 1,772 | — | — | 62,392 | — | plan? |
| Aug 13, 2018 AForm 4 → | Aug 14, 5:35 pm EDT | Richard H GlantonDirector | 1,772 | — | — | 19,514 | — | plan? |
| Aug 13, 2018 AForm 4 → | Aug 14, 5:34 pm EDT | James J ForeseDirector | 1,772 | — | — | 74,822 | — | plan? |
| Aug 13, 2018 AForm 4 → | Aug 14, 5:32 pm EDT | Nicholas DebenedictisDirector | 1,772 | — | — | 22,695 | — | plan? |
| Aug 9, 2018 SForm 4 → | Aug 10, 4:38 pm EDT | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 321,000 | $21.92 | $7,036,320 | 10,244,313 | −3.04% | plan? |
| Jun 6, 2018 SForm 4 → | Jun 8, 4:47 pm EDT | Michael C KeefeEVP, General Counsel | 3,651 | $20.02 | $73,093 | 38,361 | −8.69% | plan? |
| Jun 1, 2018 FForm 4 → | Jun 5, 4:08 pm EDT | Jonathan H WolkSr. EVP and COO | 3,283 | $19.25 | $63,198 | 91,024 | — | plan? |
| Jun 1, 2018 FForm 4 → | Jun 5, 4:07 pm EDT | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 9,409 | $19.25 | $181,123 | 10,565,313 | — | plan? |
| Jun 1, 2018 FForm 4 → | Jun 5, 4:06 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 3,772 | $19.25 | $72,611 | 288,914 | — | plan? |
| Jun 1, 2018 FForm 4 → | Jun 5, 4:05 pm EDT | Michael C KeefeEVP, General Counsel | 2,260 | $19.25 | $43,505 | 42,012 | — | plan? |
| Jun 1, 2018 FForm 4 → | Jun 5, 4:03 pm EDT | Dennis BertolottiPresident and CEO, Director | 3,358 | $19.25 | $64,642 | 130,063 | — | plan? |
| May 10, 2018 SForm 4 → | May 15, 7:44 pm EDT | Wayne Curtis WeldonDirector | 2,823 | $19.55 | $55,190 | 9,207 | −23.5% | plan? late |
| Mar 22, 2018 AForm 4 → | Mar 23, 4:53 pm EDT | Jonathan H WolkSr. EVP and COO | 464 | — | — | 94,307 | — | plan? |
| Mar 22, 2018 AForm 4 → | Mar 23, 4:47 pm EDT | Dennis BertolottiPresident and CEO, Director | 1,887 | — | — | 133,421 | — | plan? |
| Mar 19, 2018 AForm 4 → | Jun 13, 5:52 pm EDT | Nicholas DebenedictisDirector | 2,074 | — | — | 20,923 | — | plan? late |
| Mar 19, 2018 AForm 4 → | Jun 13, 5:50 pm EDT | James J ForeseDirector | 2,074 | — | — | 73,050 | — | plan? late |
| Mar 19, 2018 AForm 4 → | Jun 13, 5:49 pm EDT | Richard H GlantonDirector | 2,074 | — | — | 17,742 | — | plan? late |
| Mar 19, 2018 AForm 4 → | Jun 13, 5:47 pm EDT | Manuel N. StamatakisDirector | 2,074 | — | — | 60,620 | — | plan? late |
| Mar 19, 2018 AForm 4 → | Jun 13, 5:45 pm EDT | Wayne Curtis WeldonDirector | 2,074 | — | — | 14,104 | — | plan? late |
| Mar 14, 2018 AForm 4 → | Mar 16, 5:36 pm EDT | Dennis BertolottiPresident and CEO, Director | 20,410 | — | — | 131,534 | — | plan? |
| Mar 14, 2018 AForm 4 → | Mar 16, 5:35 pm EDT | Michael C KeefeEVP, General Counsel | 5,753 | — | — | 44,272 | — | plan? |
| Mar 14, 2018 AForm 4 → | Mar 16, 5:34 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 9,644 | — | — | 292,686 | — | plan? |
| Mar 14, 2018 AForm 4 → | Mar 16, 5:33 pm EDT | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 25,635 | — | — | 10,574,722 | — | plan? |
| Mar 14, 2018 AForm 4 → | Mar 16, 5:31 pm EDT | Jonathan H WolkSr. EVP and COO | 13,482 | — | — | 93,843 | — | plan? |
| Jan 17, 2018 FForm 4 → | Jan 18, 5:57 pm EST | Dennis BertolottiPresident and CEO, Director | 1,279 | $22.58 | $28,880 | 111,124 | — | plan? |
| Jan 2, 2018 FForm 4 → | Jan 2, 5:39 pm EST | Jonathan H WolkSr. EVP, COO, CFO, Treasurer | 487 | $23.47 | $11,430 | 80,361 | — | plan? |
| Jan 2, 2018 FForm 4 → | Jan 2, 5:31 pm EST | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 936 | $23.47 | $21,968 | 10,559,127 | — | plan? |
| Jan 2, 2018 FForm 4 → | Jan 2, 5:20 pm EST | Michael J. LangeVice Chairman and Senior EVP, Director | 468 | $23.47 | $10,984 | 283,042 | — | plan? |
| Jan 2, 2018 FForm 4 → | Jan 2, 4:53 pm EST | Michael C KeefeEVP, General Counsel | 242 | $23.47 | $5,680 | 38,519 | — | plan? |
| Jan 2, 2018 FForm 4 → | Jan 2, 4:48 pm EST | Dennis BertolottiPresident and CEO, Director | 657 | $23.47 | $15,420 | 112,403 | — | plan? |
| Dec 20, 2017 GForm 5 → | Jan 9, 2018, 4:20 pm EST | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 10,040 | — | — | 10,550,023 | — | plan? |
| Dec 1, 2017 SForm 4 → | Dec 5, 6:42 pm EST | Michael C KeefeEVP, General Counsel | 4,000 | $22.80 | $91,200 | 38,761 | −9.35% | plan? |
| Nov 20, 2017 FForm 4 → | Nov 20, 5:35 pm EST | Jonathan H WolkSr. EVP, COO, CFO, Treasurer | 2,741 | $21.33 | $58,466 | 80,848 | — | plan? |
| Oct 23, 2017 FForm 4 → | Oct 25, 8:07 am EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 732 | $20.70 | $15,152 | 283,510 | — | plan? |
| Aug 22, 2017 PForm 4 → | Aug 23, 5:15 pm EDT | Jonathan H WolkSr. EVP, COO, CFO, Treasurer | 2,500 | $17.41 | $43,525 | 83,589 | +3.08% | plan? |
| Aug 18, 2017 FForm 4 → | Aug 18, 4:15 pm EDT | Jonathan H WolkSr. EVP, CFO, Treasurer | 549 | $17.71 | $9,723 | 81,089 | — | plan? |
| Aug 18, 2017 FForm 4 → | Aug 18, 4:14 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 563 | $17.71 | $9,971 | 284,242 | — | plan? |
| Aug 18, 2017 FForm 4 → | Aug 18, 4:13 pm EDT | Dennis BertolottiPresident and CEO, Director | 1,212 | $17.71 | $21,465 | 113,060 | — | plan? |
| Aug 16, 2017 AForm 4 → | Aug 18, 4:12 pm EDT | James J ForeseDirector | 2,370 | — | — | 70,976 | — | plan? |
| Aug 16, 2017 AForm 4 → | Aug 18, 4:11 pm EDT | Wayne Curtis WeldonDirector | 2,370 | — | — | 12,030 | — | plan? |
| Aug 16, 2017 AForm 4 → | Aug 18, 4:10 pm EDT | Manuel N. StamatakisDirector | 2,370 | — | — | 46,046 | — | plan? |
| Aug 16, 2017 AForm 4 → | Aug 18, 4:09 pm EDT | Richard H GlantonDirector | 2,370 | — | — | 15,668 | — | plan? |
| Aug 16, 2017 AForm 4 → | Aug 18, 4:08 pm EDT | Nicholas DebenedictisDirector | 2,370 | — | — | 18,849 | — | plan? |
| Aug 15, 2017 SForm 4 → | Aug 16, 4:08 pm EDT | Michael C KeefeEVP, General Counsel | 4,462 | $18.05 | $80,539 | 42,761 | −9.45% | plan? |
| Aug 15, 2017 FForm 4 → | Aug 16, 4:08 pm EDT | Michael C KeefeEVP, General Counsel | 260 | $18.88 | $4,909 | 47,223 | — | plan? |
| Aug 15, 2017 FForm 4 → | Aug 16, 4:05 pm EDT | Dennis BertolottiPresident and CEO, Director | 339 | $18.88 | $6,400 | 114,272 | — | plan? |
| Aug 15, 2017 FForm 4 → | Aug 16, 4:05 pm EDT | Sotirios J. VahaviolosExecutive Chairman, Director, 10% Owner | 1,079 | $18.88 | $20,372 | 10,560,063 | — | plan? |
| Aug 15, 2017 FForm 4 → | Aug 16, 4:02 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 480 | $18.88 | $9,062 | 284,805 | — | plan? |
| Aug 14, 2017 PForm 4 → | Aug 24, 4:14 pm EDT | Manuel N. StamatakisDirector | 7,500 | $18.36 | $137,730 | 53,546 | +16.3% | plan? late |
| Aug 8, 2017 SForm 4 → | Aug 8, 4:30 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 90,490 | $21.25 | $1,922,913 | 10,561,142 | −0.85% | plan? |
| Jul 11, 2017 SForm 4 → | Jul 12, 4:19 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 94,877 | $21.08 | $2,000,007 | 10,651,632 | −0.88% | plan? |
| Jun 6, 2017 SForm 4 → | Jun 7, 4:00 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 94,206 | $21.23 | $1,999,993 | 10,746,509 | −0.87% | plan? |
| Jun 1, 2017 FForm 4 → | Jun 2, 4:06 pm EDT | Jonathan H WolkSr. EVP, CFO, Treasurer | 3,330 | $20.92 | $69,664 | 81,638 | — | plan? |
| Jun 1, 2017 FForm 4 → | Jun 2, 4:04 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 9,596 | $20.92 | $200,748 | 10,840,715 | — | plan? |
| Jun 1, 2017 FForm 4 → | Jun 2, 4:03 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 4,000 | $20.92 | $83,680 | 285,285 | — | plan? |
| Jun 1, 2017 FForm 4 → | Jun 2, 4:02 pm EDT | Michael C KeefeEVP, General Counsel | 2,273 | $20.92 | $47,551 | 47,483 | — | plan? |
| Jun 1, 2017 FForm 4 → | Jun 2, 4:00 pm EDT | Dennis BertolottiPresident and COO | 3,378 | $20.92 | $70,668 | 114,611 | — | plan? |
| May 11, 2017 SForm 4 → | May 15, 4:36 pm EDT | Dennis BertolottiPresident and COO | 8,900 | $21.21 | $188,748 | 117,989 | −7.01% | plan? |
| May 11, 2017 SForm 4 → | May 15, 4:26 pm EDT | Dennis BertolottiPresident and COO | 8,900 | $21.21 | $188,748 | 117,989 | −7.01% | plan? |
| May 11, 2017 SForm 4 → | May 12, 5:48 pm EDT | Michael C KeefeEVP, General Counsel | 8,004 | $21.18 | $169,525 | 49,756 | −13.9% | plan? |
| May 8, 2017 SForm 4 → | May 10, 4:04 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 95,557 | $20.93 | $2,000,008 | 10,850,311 | −0.87% | plan? |
| Apr 13, 2017 SForm 4 → | Apr 13, 4:03 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 94,607 | $21.14 | $1,999,992 | 10,945,868 | −0.86% | plan? |
| Mar 24, 2017 PForm 4 → | Mar 24, 4:59 pm EDT | Nicholas DebenedictisDirector | 2,500 | $20.25 | $50,625 | 15,000 | +20.0% | plan? |
| Mar 20, 2017 AForm 4 → | Mar 21, 5:54 pm EDT | Michael C KeefeEVP, General Counsel | 2,480 | — | — | 57,760 | — | plan? |
| Mar 20, 2017 AForm 4 → | Mar 21, 5:53 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 4,158 | — | — | 289,285 | — | plan? |
| Mar 20, 2017 AForm 4 → | Mar 21, 5:50 pm EDT | Dennis BertolottiPresident and COO | 5,412 | — | — | 126,889 | — | plan? |
| Mar 20, 2017 AForm 4 → | Mar 21, 5:49 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 11,053 | — | — | 11,040,475 | — | plan? |
| Mar 20, 2017 AForm 4 → | Mar 21, 5:47 pm EDT | Jonathan H WolkSr. EVP, CFO, Treasurer | 4,435 | — | — | 84,968 | — | plan? |
| Mar 8, 2017 SForm 4 → | Mar 9, 4:16 pm EST | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 89,166 | $22.43 | $1,999,993 | 11,029,422 | −0.80% | plan? |
| Feb 28, 2017 SForm 4 → | Mar 1, 4:41 pm EST | Dennis BertolottiPresident and COO | 5,000 | $22.52 | $112,600 | 121,477 | −3.95% | plan? |
| Feb 28, 2017 MForm 4 → | Mar 1, 4:41 pm EST | Dennis BertolottiPresident and COO | 5,000 | $10.00 | $50,000 | 126,477 | — | plan? |
| Feb 14, 2017 SForm 4 → | Feb 16, 9:19 am EST | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 85,985 | $23.26 | $2,000,011 | 11,118,588 | −0.77% | plan? |
| Feb 7, 2017 PForm 4 → | Feb 10, 9:25 am EST | Nicholas DebenedictisDirector | 2,500 | $22.50 | $56,250 | 12,500 | +25.0% | plan? late |
| Feb 3, 2017 PForm 4 → | Aug 25, 4:07 pm EDT | Manuel N. StamatakisDirector | 5,000 | $22.81 | $114,050 | 48,676 | +11.4% | plan? late |
Reported at this company — derivatives (options, RSUs, warrants)
| Trade | Reported (ET) | Insider | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Feb 28, 2017 MForm 4 → | Mar 1, 4:41 pm EST | Dennis BertolottiPresident and COO | 5,000 | — | — | 0 | — | |
| Sep 8, 2016 CJForm 4 → | Sep 12, 4:31 pm EDT | Michael C KeefeEVP, General Counsel | 42,903 | — | — | 0 | — | |
| Sep 8, 2016 CJForm 4 → | Sep 12, 4:28 pm EDT | Dennis BertolottiPresident and COO | 47,510 | — | — | 0 | — | |
| Sep 8, 2016 CJForm 4 → | Sep 12, 4:27 pm EDT | Michael J. LangeVice Chairman and Senior EVP, Director | 64,484 | — | — | 0 | — | |
| Sep 8, 2016 CJForm 4 → | Sep 12, 4:25 pm EDT | Sotirios J. VahaviolosChairman and CEO, Director, 10% Owner | 205,613 | — | — | 0 | — | |
| Sep 8, 2016 CJForm 4 → | Sep 12, 4:24 pm EDT | Jonathan H WolkSr. EVP, CFO, Treasurer | 55,111 | — | — | 0 | — | |
| Aug 16, 2016 MForm 4 → | Aug 17, 6:31 pm EDT | Dennis BertolottiPresident and COO | 21,000 | — | — | 5,000 | — | |
| Jan 16, 2015 CForm 4 → | Jan 21, 4:23 pm EST | Ralph L. GenesiGroup EVP, Marketing and Sales | 25,000 | — | — | 53,500 | — |