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Mistras Group, Inc.

MG Net selling
CIK 0001436126 #2926 in the set updated 21 Sep 2026
Bought (120 mo)
$4.05M
out of their own pocket, the only kind of buying there is
Sold (120 mo)
$31.79M
$1.09M on a plan · $112.60K straight out of an exercise
Sold at will
$30.59M
31 of 40 sales
Net
−$27.75M
−$26.54M against sales at will

By person

21 insiders · 100 transactions
Insider
Role
Bought
Sold
Net
Holding
Of company
Worth
Change
Vahaviolos Sotirios J.
Director
$396.27K (1)
$28.96M (12)
−$28.56M
3,890,699
12.22%
$70.03M
−59.8%
Stamatakis Manuel N.
Executive Chairman
$1.88M (16)
$217.13K (1)
+$1.66M
509,795
1.60%
$9.18M
+1,131%
DEBENEDICTIS NICHOLAS
Director
$1.39M (26)
—
+$1.39M
273,820
0.8597%
$4.93M
+1,318%
Lange Michael J.
Senior EVP
—
$1.14M (9) scheduled
−$1.14M
240,515
0.7552%
$4.33M
−16.7%
Bertolotti Dennis
President and CEO
$33.63K (3)
$490.10K (5)
−$456.47K
424,358
1.33%
$7.64M
+218.5%
Keefe Michael C
EVP, General Counsel
—
$414.36K (4)
−$414.36K
91,558
0.2875%
$1.65M
+61.5%
GLANTON RICHARD H
Director
$4.80K (1)
$397.77K (3)
−$392.97K
73,351
0.2303%
$1.32M
+359.4%
Coggins Eileen Mary
Chief Legal Officer
$143.25K (1)
—
+$143.25K
13,364
0.0420%
$240.55K
—
Wolk Jonathan H
Sr. EVP and COO
$92.26K (5)
—
+$92.26K
194,575
0.6109%
$3.50M
+133.7%
Smith John Anthony
Executive Vice President
—
$63.01K (1)
−$63.01K
100,447
0.3154%
$1.81M
−3.9%
Foglia Stephanie Athena
10% owner
—
$61.70K (4)
−$61.70K
5,778,840
18.14%
$104.02M
−18.7%
FORESE JAMES J
Director
$45.60K (1)
—
+$45.60K
177,043
0.5559%
$3.19M
+164.0%
Lohmeier Michelle
Director
$41.27K (2)
—
+$41.27K
99,223
0.3115%
$1.79M
—
WELDON WAYNE CURTIS
Director
$19.91K (1)
$55.19K (1)
−$35.28K
36,106
0.1134%
$649.91K
+242.5%
Vahaviolos Aspasia Felice
10% owner
—
—
—
2,154,541
6.76%
$38.78M
−44.2%
Prajzner Edward J
Sr. EVP and CFO
—
—
—
148,076
0.4649%
$2.67M
—
SHUMAN-FABBRI NATALIA
President and CEO
—
—
—
123,780
0.3886%
$2.23M
—
PIZZI CHARLES P
Director
—
—
—
73,480
0.2307%
$1.32M
—
Hammad Hanei Wail
EVP & Chief Operating Officer
—
—
—
61,777
0.1940%
$1.11M
—
D'Alterio Gennaro A.
EVP, Chief Commercial Officer
—
—
—
47,239
0.1483%
$850.30K
—
Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust entity
10% owner
—
—
—
0
0.0000%
$0.00
−100.0%

Individual transactions

100
Insider
Date
Role
Action
Shares
Price
Amount
Foglia Stephanie Athena
17 Apr 2026
10% owner
Sell indirect
1,000
$18.00
$18.00K
Foglia Stephanie Athena
3 Mar 2026
10% owner
Sell indirect
1,000
$15.50
$15.50K
Foglia Stephanie Athena
3 Feb 2026
10% owner
Sell indirect
1,000
$14.60
$14.60K
Foglia Stephanie Athena
5 Jan 2026
10% owner
Sell indirect
1,000
$13.60
$13.60K
Coggins Eileen Mary
15 Sep 2025
EVP & Chief Legal Officer
Buy
15,000
$9.55
$143.25K
Stamatakis Manuel N.
5 Jun 2025
Executive Chairman
Buy
10,000
$7.71
$77.10K
DEBENEDICTIS NICHOLAS
20 Mar 2025
Director
Buy
1,038
$10.01
$10.39K
Stamatakis Manuel N.
19 Mar 2025
Executive Chairman
Buy
10,000
$9.95
$99.50K
DEBENEDICTIS NICHOLAS
19 Mar 2025
Director
Buy
8,962
$10.04
$89.98K
DEBENEDICTIS NICHOLAS
18 Mar 2025
Director
Buy
10,000
$9.84
$98.40K
Lange Michael J.
25 Sep 2024
Senior EVP
Sold on a plan
6,111
$11.17
$68.26K
Lange Michael J.
24 Sep 2024
Senior EVP
Sold on a plan
18,550
$11.36
$210.73K
Lange Michael J.
23 Sep 2024
Senior EVP
Sold on a plan
12,827
$10.79
$138.40K
Lange Michael J.
20 Sep 2024
Senior EVP
Sold on a plan
24,706
$11.02
$272.26K
Lange Michael J.
19 Sep 2024
Senior EVP
Sold on a plan
11,803
$10.80
$127.47K
Lange Michael J.
18 Sep 2024
Senior EVP
Sold on a plan
5,013
$10.74
$53.84K
Lange Michael J.
17 Sep 2024
Senior EVP
Sold on a plan
13,832
$10.64
$147.17K
Lange Michael J.
16 Sep 2024
Senior EVP
Sold on a plan
7,158
$10.58
$75.73K
GLANTON RICHARD H
20 Jun 2024
Director
Sell
21,000
$7.68
$161.28K
Lange Michael J.
12 Mar 2024
Senior EVP
Sell
5,000
$8.53
$42.65K
DEBENEDICTIS NICHOLAS
20 Dec 2023
Director
Buy
3,000
$7.05
$21.15K
DEBENEDICTIS NICHOLAS
13 Dec 2023
Director
Buy
2,000
$6.60
$13.20K
DEBENEDICTIS NICHOLAS
11 Dec 2023
Director
Buy
100
$6.50
$650.00
Smith John Anthony
14 Nov 2023
Executive Vice President
Sell
10,018
$6.29
$63.01K
DEBENEDICTIS NICHOLAS
9 Nov 2023
Director
Buy
3,684
$5.94
$21.88K
DEBENEDICTIS NICHOLAS
8 Nov 2023
Director
Buy
120
$5.80
$696.00
Stamatakis Manuel N.
7 Nov 2023
Interim President and CEO
Buy
15,000
$6.00
$90.00K
GLANTON RICHARD H
25 Mar 2022
Director
Buy
753
$6.37
$4.80K
GLANTON RICHARD H
20 Sep 2021
Director
Sell
4,357
$9.04
$39.39K
Stamatakis Manuel N.
17 Aug 2021
Director
Buy
5,000
$9.62
$48.10K
GLANTON RICHARD H
14 Jun 2021
Director
Sell
18,000
$10.95
$197.10K
Stamatakis Manuel N.
11 May 2021
Director
Buy
15,000
$9.98
$149.70K
Stamatakis Manuel N.
18 Dec 2020
Director
Buy
20,000
$7.35
$147.00K
Stamatakis Manuel N.
16 Nov 2020
Director
Sell
47,721
$4.55
$217.13K
Lohmeier Michelle
31 Mar 2020
Director
Buy
3,636
$4.50
$16.36K
DEBENEDICTIS NICHOLAS
31 Mar 2020
Director
Buy
16,468
$4.32
$71.14K
Bertolotti Dennis
31 Mar 2020
President and CEO
Buy
1,500
$4.48
$6.72K
Bertolotti Dennis
30 Mar 2020
President and CEO
Buy
200
$4.05
$810.00
Bertolotti Dennis
30 Mar 2020
President and CEO
Buy
5,800
$4.50
$26.10K
Lohmeier Michelle
30 Mar 2020
Director
Buy
5,547
$4.49
$24.91K
FORESE JAMES J
30 Mar 2020
Director
Buy
10,000
$4.56
$45.60K
WELDON WAYNE CURTIS
30 Mar 2020
Director
Buy
4,030
$4.94
$19.91K
DEBENEDICTIS NICHOLAS
30 Mar 2020
Director
Buy
58,532
$4.77
$279.20K
Stamatakis Manuel N.
30 Mar 2020
Director
Buy
50,000
$4.67
$233.50K
Vahaviolos Sotirios J.
30 Mar 2020
Executive Chairman
Buy
87,670
$4.52
$396.27K
Stamatakis Manuel N.
8 Nov 2019
Director
Buy
5,000
$14.60
$73.00K
Vahaviolos Sotirios J.
21 Aug 2019
Executive Chairman
Exercised, kept
133,461
$13.46
$1.80M
Vahaviolos Sotirios J.
16 Aug 2019
Executive Chairman
Exercised, kept
141,034
$13.46
$1.90M
Lange Michael J.
16 Jul 2019
Vice Chairman and Senior EVP
Exercised, kept
14,475
$13.46
$194.83K
Wolk Jonathan H
5 Jun 2019
Sr. EVP and COO
Buy
1,579
$13.79
$21.77K
Wolk Jonathan H
5 Jun 2019
Sr. EVP and COO
Buy
921
$13.71
$12.63K
Wolk Jonathan H
3 Jun 2019
Sr. EVP and COO
Buy
146
$13.82
$2.02K
Wolk Jonathan H
3 Jun 2019
Sr. EVP and COO
Buy
900
$13.68
$12.31K
DEBENEDICTIS NICHOLAS
31 May 2019
Director
Buy
900
$13.85
$12.47K
DEBENEDICTIS NICHOLAS
30 May 2019
Director
Buy
100
$13.85
$1.39K
DEBENEDICTIS NICHOLAS
24 May 2019
Director
Buy
1,000
$13.95
$13.95K
DEBENEDICTIS NICHOLAS
23 May 2019
Director
Buy
1,010
$13.99
$14.13K
DEBENEDICTIS NICHOLAS
20 May 2019
Director
Buy
2,995
$13.64
$40.85K
DEBENEDICTIS NICHOLAS
17 May 2019
Director
Buy
2,495
$14.03
$35.00K
DEBENEDICTIS NICHOLAS
16 May 2019
Director
Buy
1,500
$14.15
$21.23K
Stamatakis Manuel N.
15 May 2019
Director
Buy
5,000
$14.04
$70.20K
Stamatakis Manuel N.
13 May 2019
Director
Buy
5,000
$13.25
$66.25K
DEBENEDICTIS NICHOLAS
18 Mar 2019
Director
Buy
7,000
$13.90
$97.30K
DEBENEDICTIS NICHOLAS
15 Mar 2019
Director
Buy
10,000
$13.99
$139.90K
Stamatakis Manuel N.
14 Mar 2019
Director
Buy
15,000
$13.85
$207.75K
DEBENEDICTIS NICHOLAS
14 Mar 2019
Director
Buy
3,000
$13.78
$41.34K
Stamatakis Manuel N.
20 Dec 2018
Director
Buy
10,000
$14.84
$148.40K
DEBENEDICTIS NICHOLAS
20 Dec 2018
Director
Buy indirect
7,304
$14.90
$108.83K
DEBENEDICTIS NICHOLAS
19 Dec 2018
Director
Buy indirect
2,696
$14.55
$39.23K
Stamatakis Manuel N.
18 Dec 2018
Director
Buy
15,000
$14.28
$214.20K
Vahaviolos Sotirios J.
9 Aug 2018
Executive Chairman
Sell
321,000
$21.92
$7.04M
Keefe Michael C
6 Jun 2018
EVP, General Counsel
Sell
3,651
$20.02
$73.09K
WELDON WAYNE CURTIS
10 May 2018
Director
Sell
2,823
$19.55
$55.19K
Keefe Michael C
1 Dec 2017
EVP, General Counsel
Sell
4,000
$22.80
$91.20K
Wolk Jonathan H
22 Aug 2017
Sr. EVP, COO, CFO, Treasurer
Buy
2,500
$17.41
$43.53K
Stamatakis Manuel N.
18 Aug 2017
Director
Buy
3,000
$17.59
$52.77K
Keefe Michael C
15 Aug 2017
EVP, General Counsel
Sell
4,462
$18.05
$80.54K
Stamatakis Manuel N.
14 Aug 2017
Director
Buy
4,500
$18.88
$84.96K
Vahaviolos Sotirios J.
8 Aug 2017
Chairman and CEO
Sell
90,490
$21.25
$1.92M
Vahaviolos Sotirios J.
11 Jul 2017
Chairman and CEO
Sell
94,877
$21.08
$2.00M
Vahaviolos Sotirios J.
6 Jun 2017
Chairman and CEO
Sell
94,206
$21.23
$2.00M
Keefe Michael C
11 May 2017
EVP, General Counsel
Sell
8,004
$21.18
$169.52K
Bertolotti Dennis
11 May 2017
President and COO
Sell
300
$22.00
$6.60K
Bertolotti Dennis
11 May 2017
President and COO
Sell
8,600
$21.18
$182.15K
Bertolotti Dennis
11 May 2017
President and COO
Sell
300
$22.00
$6.60K
Bertolotti Dennis
11 May 2017
President and COO
Sell
8,600
$21.18
$182.15K
Vahaviolos Sotirios J.
8 May 2017
Chairman and CEO
Sell
95,557
$20.93
$2.00M
Vahaviolos Sotirios J.
13 Apr 2017
Chairman and CEO
Sell
94,607
$21.14
$2.00M
DEBENEDICTIS NICHOLAS
24 Mar 2017
Director
Buy indirect
2,500
$20.25
$50.63K
Vahaviolos Sotirios J.
8 Mar 2017
Chairman and CEO
Sell
89,166
$22.43
$2.00M
Bertolotti Dennis
28 Feb 2017
President and COO
Sold after exercise
5,000
$22.52
$112.60K
Vahaviolos Sotirios J.
14 Feb 2017
Chairman and CEO
Sell
85,985
$23.26
$2.00M
DEBENEDICTIS NICHOLAS
7 Feb 2017
Director
Buy indirect
2,500
$22.50
$56.25K
Stamatakis Manuel N.
3 Feb 2017
Director
Buy
5,000
$22.81
$114.05K
DEBENEDICTIS NICHOLAS
19 Jan 2017
Director
Buy indirect
2,500
$22.52
$56.30K
DEBENEDICTIS NICHOLAS
18 Jan 2017
Director
Buy indirect
2,500
$22.75
$56.88K
Vahaviolos Sotirios J.
12 Jan 2017
Chairman and CEO
Sell
81,103
$24.66
$2.00M
Vahaviolos Sotirios J.
13 Dec 2016
Chairman and CEO
Sell
92,795
$21.55
$2.00M
Vahaviolos Sotirios J.
4 Nov 2016
Chairman and CEO
Sell
95,980
$20.84
$2.00M
Vahaviolos Sotirios J.
25 Oct 2016
Chairman and CEO
Sell
85,234
$23.46
$2.00M

What was left out

Form 4 filings counted 383
Amendments (4/A) skipped 14
Filings about a different issuer 0
Unreadable filings 0
Joint filings 3
Sales on a Rule 10b5-1 plan 8
Sales straight out of an exercise 1
Sales at will 31
Transactions with no price 0
Shares from compensation/vesting 28,519,709
Sales filed before the plan box existed 24
History held since 12 Sep 2016