Mistras Group, Inc. - Common Stock, $0.01 par value (MG) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2014 to Q4 2025

Type / Class
Equity / Common Stock, $0.01 par value
Symbol
MG on NYSE
Shares outstanding
31,373,451
Price per share
$14.39
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
17,581,738
Total reported value
$222,419,326
% of total 13F portfolios
0%
Share change
-928,697
Value change
-$9,634,007
Number of holders
121
Price from insider filings
$14.39
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Mistras Group, Inc. - Common Stock, $0.01 par value (MG) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
Vahaviolos Aspasia Felice 19% $53,729,720 6,105,650 Aspasia Vahaviolos 23 May 2025
Mill Road Capital III, L.P. 5.7% -14% $16,363,461 -$6,783,809 1,763,304 -28% Mill Road Capital III, L.P. 06 Mar 2025
Kyriakopoulos Kristy Vahaviolos 5.3% $14,692,066 1,669,553 Kristy Kyriakopoulos 08 Jul 2025
DIMENSIONAL FUND ADVISORS LP 5.2% $13,001,359 1,623,141 Dimensional Fund Advisors LP 30 Jun 2025
Foglia Stephanie Athena 5.1% $14,080,405 1,600,046 Stephanie Foglia 08 Jul 2025

As of 31 Dec 2025, 121 institutional investors reported holding 17,581,738 shares of Mistras Group, Inc. - Common Stock, $0.01 par value (MG). This represents 56% of the company’s total 31,373,451 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Mistras Group, Inc. - Common Stock, $0.01 par value (MG) together control 47% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
Mill Road Capital Management LLC 5.3% 1,672,681 +0.02% 13% $21,159,415
DIMENSIONAL FUND ADVISORS LP 5.3% 1,667,846 +2.1% 0% $21,098,467
WEBER CAPITAL MANAGEMENT LLC /ADV 4.7% 1,482,102 0% 18% $18,748,590
ROYCE & ASSOCIATES LP 4.5% 1,421,087 +5.8% 0.18% $17,976,751
VANGUARD GROUP INC 3.5% 1,109,588 -4.8% 0% $14,036,289
IES Holdings, Inc. 3.4% 1,079,841 0% 8% $13,659,989
BlackRock, Inc. 2.8% 880,712 -17% 0% $11,141,006
Clearline Capital LP 2.2% 698,849 0% 0.67% $8,840,440
FEDERATED HERMES, INC. 2.1% 656,032 -3.6% 0.01% $8,298,805
Invenomic Capital Management LP 1.5% 475,692 +0.67% 0.29% $6,017,504
BRIDGEWAY CAPITAL MANAGEMENT, LLC 1.3% 403,043 -1.3% 0.11% $5,098,494
DEUTSCHE BANK AG\ 1.2% 379,454 +81% 0% $4,800,093
GEODE CAPITAL MANAGEMENT, LLC 1.1% 360,480 -12% 0% $4,561,503
STATE STREET CORP 1.1% 330,834 -10% 0% $4,185,050
Pacific Ridge Capital Partners, LLC 0.9% 283,829 -2.3% 0.79% $3,590,437
CSM Advisors, LLC 0.86% 269,301 +0.17% 0.09% $3,408,000
Empowered Funds, LLC 0.71% 221,436 -1.4% 0.05% $2,801,165
JB CAPITAL PARTNERS LP 0.64% 202,243 0% 0.44% $2,558,374
RENAISSANCE TECHNOLOGIES LLC 0.64% 201,600 +12% 0% $2,550,240
D. E. Shaw & Co., Inc. 0.52% 163,788 +21% 0% $2,071,918
Qube Research & Technologies Ltd 0.52% 163,772 +56% 0% $2,071,716
NORTHERN TRUST CORP 0.51% 161,047 -17% 0% $2,037,244
MILLENNIUM MANAGEMENT LLC 0.5% 156,277 -56% 0% $1,976,904
O'SHAUGHNESSY ASSET MANAGEMENT, LLC 0.45% 142,621 +197% 0.01% $1,804,156
GOLDMAN SACHS GROUP INC 0.45% 140,785 -20% 0% $1,780,930

Institutional Holders of Mistras Group, Inc. - Common Stock, $0.01 par value (MG) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 17,581,738 $222,419,326 -$9,634,007 $12.65 121
2025 Q3 15,916,078 $156,623,642 +$3,229,336 $9.84 109
2025 Q2 15,627,282 $125,166,649 +$5,913,927 $8.01 106
2025 Q1 15,149,624 $160,283,744 +$8,100,739 $10.58 109
2024 Q4 14,829,373 $134,351,444 -$1,882,993 $9.06 107
2024 Q3 15,042,681 $171,048,719 +$5,226,658 $11.37 106
2024 Q2 14,346,207 $118,932,546 +$891,248 $8.29 90
2024 Q1 14,196,251 $135,716,646 -$1,222,822 $9.56 82
2023 Q4 14,370,492 $105,193,279 -$2,251,718 $7.32 79
2023 Q3 14,733,427 $80,291,456 -$1,244,020 $5.45 77
2023 Q2 14,926,494 $115,233,696 +$10,917,302 $7.72 79
2023 Q1 13,484,951 $91,435,604 +$1,414,990 $6.78 63
2022 Q4 13,868,528 $68,369,461 -$2,904,116 $4.93 61
2022 Q3 14,477,717 $64,566,159 -$2,264,415 $4.46 64
2022 Q2 14,927,582 $88,691,297 -$4,723,049 $5.94 74
2022 Q1 15,756,743 $102,852,604 +$4,184,141 $6.61 87
2021 Q4 15,019,624 $111,642,338 +$1,415,192 $7.43 84
2021 Q3 14,699,936 $149,270,390 -$1,237,007 $10.16 86
2021 Q2 14,826,439 $145,785,761 +$1,380,574 $9.83 82
2021 Q1 14,671,533 $167,394,264 +$4,647,438 $11.41 83
2020 Q4 14,315,338 $111,098,924 +$1,375,750 $7.76 84
2020 Q3 13,251,575 $51,809,822 -$3,648,874 $3.91 86
2020 Q2 14,187,758 $56,029,490 -$10,700,152 $3.95 88
2020 Q1 16,222,593 $69,109,274 -$2,759,844 $4.26 85
2019 Q4 16,444,544 $235,292,466 +$2,089,922 $14.27 86
2019 Q3 16,329,111 $267,737,907 -$5,773,393 $16.40 95
2019 Q2 16,807,431 $241,515,429 +$2,094,684 $14.37 88
2019 Q1 16,892,126 $233,273,347 +$2,103,708 $13.81 93
2018 Q4 16,722,511 $240,467,837 -$6,673,134 $14.38 96
2018 Q3 17,053,800 $369,547,260 +$6,629,049 $21.67 96
2018 Q2 16,747,642 $316,317,257 -$14,683,180 $18.88 86
2018 Q1 17,508,465 $331,772,665 -$6,735,068 $18.94 80
2017 Q4 17,731,665 $415,972,889 -$1,760,966 $23.47 86
2017 Q3 17,523,522 $359,259,879 +$8,079,933 $20.50 76
2017 Q2 17,118,902 $376,140,883 +$15,006,681 $21.97 81
2017 Q1 16,441,763 $351,610,488 +$31,362,994 $21.38 88
2016 Q4 15,934,880 $409,140,715 -$9,017,870 $25.68 94
2016 Q3 16,333,761 $383,352,117 -$1,017,046 $23.47 106
2016 Q2 16,369,019 $390,709,566 +$2,875,548 $23.87 106
2016 Q1 16,067,602 $397,721,000 -$2,181,953 $24.77 103
2015 Q4 16,233,379 $309,922,809 +$7,633,580 $19.09 90
2015 Q3 15,984,154 $206,619,104 -$5,426,081 $12.85 79
2015 Q2 16,020,209 $304,069,029 -$4,374,080 $18.98 83
2015 Q1 16,245,579 $312,940,548 +$16,041,011 $19.26 81
2014 Q4 15,480,212 $287,729,671 -$5,077,281 $18.33 86
2014 Q3 15,391,700 $314,455,779 -$4,226,235 $20.40 88
2014 Q2 15,546,740 $381,165,916 +$11,652,297 $24.52 94
2014 Q1 15,093,427 $343,623,121 +$13,672,313 $22.77 97