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$MG
$20.47 +$0.02 (0.1%) Close

Ownership

13F as of Q2 2026 · 31.8M shares outstanding

Who owns MG?

By type of holder
Institutions 60.0% Insiders 40.0% Everyone else 0.0%
Concentration Top 10 holders own 88.0%
Aspasia Felice Vahaviolos 19.1% · Stephanie Athena Foglia 17.4%
Institutional ownership
60.0%
+2.9 pts vs last qtr
Institutional holders
134
+6 vs last qtr
Net shares bought
+924.1K
by institutions in Q2 2026
New / sold out
23 / 17
positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026
  • BlackRock, Inc. +306.7K
  • First Eagle Investment Management, LLC +272.3K

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Biggest sellers in Q2 2026
  • Invenomic Capital Management LP SOLD OUT −452.6K
  • Clearline Capital LP −286.6K

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Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Mistras Group Inc in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025
+7.2%
+0.78% a year
Each share's claim on the business
−6.8%
shrank without buying or selling a share
Spent on buybacks vs paid in stock
$15.9M vs $60.1M
over 10 fiscal years
Diluted shares, split-adjusted
27.6M30.0M32.4M2016: 29.9M shares'162017: 28.4M shares'172018: 29.4M shares'182019: 29.0M shares'192020: 29.1M shares'202021: 30.1M shares'212022: 30.2M shares'222023: 30.3M shares'232024: 31.6M shares'242025: 32.1M shares'25
Buybacks Stock-based comp
$0$8.0M$15.9M2016 buybacks: $02016 stock comp: $6.5M'162017 buybacks: $15.9M2017 stock comp: $6.6M'172018 buybacks: $02018 stock comp: $6.1M'182019 buybacks: $02019 stock comp: $5.8M'192020 buybacks: $02020 stock comp: $5.9M'202021 buybacks: $02021 stock comp: $5.4M'212022 buybacks: $02022 stock comp: $5.3M'222023 buybacks: $02023 stock comp: $5.7M'232024 buybacks: $02024 stock comp: $5.1M'242025 buybacks: $02025 stock comp: $7.8M'25

How patient are the owners?

Institutional shares by how long they've been held
5+ years60% 3–5 years5% 1–3 years9% Under 1 year27%
Quarterly turnover
10.3%
of institutional shares changed hands
Top 10 managers, median time held
5 years

Super Investors

Investment managers reporting MG on Form 13F
MR
Mill Road Capital Management LLC
Shares
1.9M
% of company
6.06%
Change vs last qtr
+58.9K (+3.2%)
Held since
≤2021
DF
Dimensional Fund Advisors LP
Shares
1.7M
% of company
5.34%
Change vs last qtr
−2.9K (−0.2%)
Held since
≤2021

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Institutional Funds

Mutual funds and ETFs reporting MG on Form N-PORT; together they hold 25.5% of the company
VT
Vanguard Total Stock Market Index Fund
Vanguard Index Funds
Position value
$14.2M
% of company
2.55%
% of the fund
0.00%
As of
June 30, 2026
RS
Royce Small-Cap Opportunity Fund
Royce Fund
Position value
$9.72M
% of company
1.75%
% of the fund
0.69%
As of
June 30, 2026

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Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G
AF
Aspasia Felice Vahaviolos
5%+ holder13D · 19.1%
Shares
6.1M
% of company
19.10%
Change vs last qtr
—
Held since
—
SA
Stephanie Athena Foglia
5%+ holder13D · 17.4%
Shares
5.5M
% of company
17.37%
Change vs last qtr
—
Held since
—

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