Mistras Group, Inc.
US ˙ NYSE ˙ US60649T1079

SecurityMG / Mistras Group, Inc.
InstitutionMill Road Capital Management LLC
Latest Disclosed Ownership1,870,580 shares
Latest Disclosed Value $ 27,647,172
Mill Road Capital Management LLC reports 11.83% increase in ownership of MG / Mistras Group, Inc.

On May 15, 2026 - Mill Road Capital Management LLC filed a 13F-HR form disclosing ownership of 1,870,580 shares of Mistras Group, Inc. (US:MG) valued at $27,647,172 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,672,681 shares of Mistras Group, Inc.. This represents a change in shares of 11.83% during the quarter. The current value of the position is $32,940,914 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date
Effective
Date
Form Security Class ID Avg Price
Paid (Est)
Reported
Shares
ΔShares ΔShares
(%)
Reported
Value
(x1000)
ΔValue
(%)
Alloc
(%)
ΔAlloc ΔAlloc (%) Cost Basis
(x1000)
Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F MISTRAS GROUP COM 60649T107 1,870,580 197,899 11.83 27,647 30.66 14.1169
2026-02-17 2025-12-31 13F MISTRAS GROUP COM 60649T107 1,672,681 300 0.02 21,159 28.58 12.5709
2025-11-14 2025-09-30 13F MISTRAS GROUP COM 60649T107 1,672,381 4,700 0.28 16,456 23.19 8.5689
2025-08-14 2025-06-30 13F MISTRAS GROUP COM 60649T107 1,667,681 0 0.00 13,358 -24.29 8.5544
2025-05-15 2025-03-31 13F MISTRAS GROUP COM 60649T107 1,667,681 -56,801 -3.29 17,644 12.94 10.0092
2025-02-14 2024-12-31 13F MISTRAS GROUP COM 60649T107 1,724,482 125,337 7.84 15,624 -14.07 7.5025
2024-11-14 2024-09-30 13F MISTRAS GROUP COM 60649T107 1,599,145 72,025 4.72 18,182 43.63 8.6477
2024-08-14 2024-06-30 13F MISTRAS GROUP COM 60649T107 1,527,120 12,219 0.81 12,660 -12.59 6.7443
2024-05-15 2024-03-31 13F MISTRAS GROUP COM 60649T107 1,514,901 0 0.00 14,482 30.60 6.2949
2024-02-14 2023-12-31 13F MISTRAS GROUP COM 60649T107 1,514,901 9,779 0.65 11,089 35.20 5.0654
2023-11-14 2023-09-30 13F MISTRAS GROUP COM 60649T107 1,505,122 25,000 1.69 8,203 -28.22 4.3160
2023-08-14 2023-06-30 13F MISTRAS GROUP COM 60649T107 1,480,122 0 0.00 11,427 13.86 6.1837
2023-05-15 2023-03-31 13F MISTRAS GROUP COM 60649T107 1,480,122 0 0.00 10,035 37.52 5.1642
2023-02-14 2022-12-31 13F MISTRAS GROUP COM 60649T107 1,480,122 0 0.00 7,297 10.54 3.9869
2022-11-14 2022-09-30 13F MISTRAS GROUP COM 60649T107 1,480,122 7,900 0.54 6,601 -24.52 3.1519
2022-08-15 2022-06-30 13F MISTRAS GROUP COM 60649T107 1,472,222 107,600 7.88 8,745 -3.05 3.6574
2022-05-16 2022-03-31 13F MISTRAS GROUP COM 60649T107 1,364,622 21,625 1.61 9,020 -9.60 3.3527
2022-02-14 2021-12-31 13F MISTRAS GROUP COM 60649T107 1,342,997 167,200 14.22 9,978 -16.47 3.3178
2021-11-15 2021-09-30 13F MISTRAS GROUP COM 60649T107 1,175,797 40,500 3.57 11,946 7.04 3.9274
2021-08-16 2021-06-30 13F MISTRAS GROUP COM 60649T107 1,135,297 0 0.00 11,160 -13.85 3.7625
2021-05-17 2021-03-31 13F MISTRAS GROUP COM 60649T107 1,135,297 0 0.00 12,954 47.04 4.2841
2021-02-16 2020-12-31 13F MISTRAS GROUP COM 60649T107 1,135,297 1,135,297 8,810 3.1133
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.