Mistras Group, Inc. - Common Stock (MG) Institutional Ownership

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

Type / Class
Equity / Common Stock
Symbol
MG on NYSE
Shares outstanding
31,214,250
Price per share
$12.65
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
15,916,058
Total reported value
$156,623,445
% of total 13F portfolios
0%
Share change
+287,416
Value change
+$3,229,150
Number of holders
108
Price from insider filings
$12.65
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of Mistras Group, Inc. - Common Stock (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% $48,600,974 6,105,650 Aspasia Vahaviolos 23 May 2025
Mill Road Capital III, L.P. 5.7% -14% $16,451,626 -$6,783,809 1,763,304 -28% Mill Road Capital III, L.P. 06 Mar 2025
Kyriakopoulos Kristy Vahaviolos 5.3% $13,289,642 1,669,553 Kristy Kyriakopoulos 08 Jul 2025
DIMENSIONAL FUND ADVISORS LP 5.2% $12,920,202 1,623,141 Dimensional Fund Advisors LP 30 Jun 2025
Foglia Stephanie Athena 5.1% $12,736,366 1,600,046 Stephanie Foglia 08 Jul 2025

As of 30 Sep 2025, 108 institutional investors reported holding 15,916,058 shares of Mistras Group, Inc. - Common Stock (MG). This represents 51% of the company’s total 31,214,250 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of Mistras Group, Inc. - Common Stock (MG) together control 44% 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 5.4% 1,672,381 +0.28% 8.6% $16,456,229
DIMENSIONAL FUND ADVISORS LP 5.2% 1,633,327 +0.63% 0% $16,072,010
ROYCE & ASSOCIATES LP 4.3% 1,342,747 +5.6% 0.13% $13,212,630
VANGUARD GROUP INC 3.7% 1,165,054 -2.5% 0% $11,464,132
BlackRock, Inc. 3.4% 1,058,273 -14% 0% $10,413,406
Clearline Capital LP 2.2% 698,849 0% 0.59% $6,876,674
FEDERATED HERMES, INC. 2.2% 680,245 -0.09% 0.01% $6,693,611
Acuitas Investments, LLC 2.1% 643,483 +52% 4.1% $6,331,873
Invenomic Capital Management LP 1.5% 472,536 0.24% $4,649,754
J. Goldman & Co LP 1.4% 421,920 -45% 0.16% $4,151,693
BRIDGEWAY CAPITAL MANAGEMENT, LLC 1.3% 408,283 -2.5% 0.09% $4,017,505
GEODE CAPITAL MANAGEMENT, LLC 1.3% 407,663 -2.4% 0% $4,012,575
STATE STREET CORP 1.2% 369,400 -9.3% 0% $3,634,896
MILLENNIUM MANAGEMENT LLC 1.1% 357,513 +49% 0% $3,517,928
Pacific Ridge Capital Partners, LLC 0.93% 290,650 -2% 0.63% $2,859,996
CSM Advisors, LLC 0.86% 268,851 -26% 0.07% $2,646,000
CITADEL ADVISORS LLC 0.77% 240,318 +144% 0% $2,364,729
Empowered Funds, LLC 0.72% 224,633 -2.2% 0.02% $2,210,389
DEUTSCHE BANK AG\ 0.67% 210,040 +29% 0% $2,066,794
JB CAPITAL PARTNERS LP 0.65% 202,243 0% 0.34% $1,990,071
NORTHERN TRUST CORP 0.62% 194,806 -6.1% 0% $1,916,891
RENAISSANCE TECHNOLOGIES LLC 0.58% 180,800 -31% 0% $1,779,072
GOLDMAN SACHS GROUP INC 0.56% 175,331 +216% 0% $1,725,257
JACOBS LEVY EQUITY MANAGEMENT, INC 0.47% 147,146 -34% 0.01% $1,447,917
D. E. Shaw & Co., Inc. 0.44% 135,797 +19% 0% $1,336,242

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

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 30,365 $383,944 +$144,998 $12.65 5
2025 Q3 15,916,058 $156,623,445 +$3,229,150 $9.84 108
2025 Q2 15,627,282 $125,166,649 +$5,913,915 $8.01 106
2025 Q1 15,149,624 $160,284,054 +$8,100,734 $10.58 109
2024 Q4 14,829,373 $134,351,053 -$1,882,991 $9.06 107
2024 Q3 15,042,681 $171,048,676 +$5,226,654 $11.37 106
2024 Q2 14,346,207 $118,932,373 +$891,262 $8.29 91
2024 Q1 14,196,251 $135,716,193 -$1,141,972 $9.56 83
2023 Q4 14,370,492 $105,193,598 -$2,404,815 $7.32 79
2023 Q3 14,733,427 $80,291,848 -$1,245,299 $5.45 77
2023 Q2 14,926,494 $115,233,564 +$10,917,173 $7.72 79
2023 Q1 13,484,951 $91,435,604 +$1,422,942 $6.78 63
2022 Q4 13,868,528 $68,369,461 -$2,904,121 $4.93 61
2022 Q3 14,477,717 $64,566,159 -$2,105,521 $4.46 64
2022 Q2 14,761,168 $87,702,297 -$5,244,962 $5.94 73
2022 Q1 14,355,842 $93,593,604 +$4,101,069 $6.61 85
2021 Q4 13,483,418 $100,230,338 +$1,873,394 $7.43 80
2021 Q3 14,700,250 $149,274,390 -$1,792,814 $10.16 86
2021 Q2 14,664,191 $144,190,761 +$1,763,565 $9.83 81
2021 Q1 14,671,533 $167,394,264 +$3,686,060 $11.41 83
2020 Q4 13,506,826 $104,824,924 +$783,131 $7.76 83
2020 Q3 12,972,271 $50,717,822 -$3,980,832 $3.91 85
2020 Q2 13,906,525 $54,920,490 -$9,400,820 $3.95 84
2020 Q1 16,222,593 $69,109,274 -$2,760,274 $4.26 85
2019 Q4 16,363,556 $234,136,466 +$6,489,585 $14.27 85
2019 Q3 16,220,266 $265,952,907 -$7,418,607 $16.40 94
2019 Q2 16,483,600 $236,864,429 +$3,439,903 $14.37 86
2019 Q1 16,474,597 $227,509,347 -$1,539,933 $13.81 91
2018 Q4 16,565,330 $238,209,837 -$883,107 $14.38 93
2018 Q3 16,911,688 $366,469,260 +$6,955,139 $21.67 94
2018 Q2 16,641,210 $314,308,257 -$15,623,681 $18.88 84
2018 Q1 17,427,118 $330,234,665 -$6,720,468 $18.94 77
2017 Q4 16,701,000 $391,783,889 -$2,489,043 $23.47 83
2017 Q3 17,506,403 $358,909,879 +$8,185,647 $20.50 76
2017 Q2 17,118,902 $376,140,883 +$15,003,297 $21.97 81
2017 Q1 16,410,351 $350,940,488 +$32,637,293 $21.38 86
2016 Q4 14,895,864 $382,457,715 -$12,356,649 $25.68 92
2016 Q3 16,238,221 $381,109,117 -$285,266 $23.47 105
2016 Q2 16,163,366 $385,800,566 +$2,239,409 $23.87 104
2016 Q1 15,797,806 $391,038,000 +$475,311 $24.77 101
2015 Q4 16,233,379 $309,922,809 +$7,668,393 $19.09 90
2015 Q3 15,984,154 $206,619,104 -$7,802,792 $12.85 80
2015 Q2 15,847,990 $300,800,029 -$414,746 $18.98 82
2015 Q1 16,078,326 $309,719,548 +$17,499,978 $19.26 79
2014 Q4 15,302,906 $284,480,671 -$4,173,937 $18.33 84
2014 Q3 15,204,128 $310,628,779 -$6,045,569 $20.40 88
2014 Q2 15,546,120 $381,150,916 +$11,651,422 $24.52 95
2014 Q1 15,093,383 $343,622,121 +$13,680,410 $22.77 97