Stocks › MG
Mistras Group, Inc.
MG·NYSE·
United States·USD
United States·USD$21.03
+0.40 (+1.94%)
Close · Oct 6, 2026 · Close Prices from Tiingo.com
MG
Mistras Group, Inc. · NYSE
Nasdaq 100S&P 500
Filings
Default90D1Y5YALL
MGS&P 500 (rebased)
Congress BuyCongress SellInsider BuyInsider SellForm 1448-K ResultsLobbying
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Daily closes, adjusted for splits and dividends · Close Prices from Tiingo.comHover a marker, every one is a filing · move across the line for the crosshair
Congressional Trades
Recent trades of MG by members of U.S. Congress · 4 on record
| Politician | Stock | Type | Filed | Traded | |
|---|---|---|---|---|---|
 James B. RenacciHouse · R · OH |
MGMistras Group, Inc. · Stock |
Sale $1,001 - $15,000 |
Mar 18, 2015 | Mar 9, 2015 | Filing ↗ |
 Thom TillisSenate · R · NC |
MGMistras Group, Inc. · Stock |
Sale $1,001 - $15,000 |
Feb 26, 2015 | Feb 13, 2015 | Filing ↗ |
| James B. RenacciHouse · R · OH |
MGMistras Group, Inc. · Stock |
Purchase $1,001 - $15,000 |
Jan 5, 2015 | Dec 29, 2014 | Filing ↗ |
| James B. RenacciHouse · R · OH |
MGMistras Group, Inc. · Stock |
Sale $1,001 - $15,000 |
Dec 8, 2014 | Nov 24, 2014 | Filing ↗ |
Whale Activity
Position changes in MG reported for 2026-06-30 by 9 tracked institutional filers
- Increased4
- New0
- Held0
- Decreased3
- Closed1
- No prior filing1
| Filer | Shares | Value | Change |
|---|---|---|---|
| BlackRock, Inc. | 1.2M | $20.4M | increased |
| VANGUARD CAPITAL MANAGEMENT LLC | 1.1M | $18.4M | increased |
| Pacific Ridge Capital Partners, LLC | 282.9K | $4.9M | — |
| CITADEL ADVISORS LLC | 151.5K | $2.6M | increased |
| TWO SIGMA INVESTMENTS, LP | 149.4K | $2.6M | decreased |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 143.3K | $2.5M | increased |
| RENAISSANCE TECHNOLOGIES LLC | 102.7K | $1.8M | decreased |
| D. E. Shaw & Co., Inc. | 44.2K | $773K | decreased |
| Millennium Management LLC | 0 | $0 | closed |
KeyVex tracks a curated set of large 13F filers plus the largest positions in recent filings, so this is a sample of institutional activity, not the whole market.
Insider Trading
Net shares bought (+) or sold (−) on the open market by MG insiders, by quarter · Form 4
Recent Insider Transactions
790 transactions on record · newest first
| Insider | Type | Shares | Price | Value | Date | |
|---|---|---|---|---|---|---|
| Vahaviolos Aspasia Felice10% owner | Gift | +411.9K | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| Foglia Stephanie Athena10% owner | Gift | −411.9K | $0.00 | $0 | Jun 10, 2026 | Form 4 ↗ |
| DEBENEDICTIS NICHOLASDirector | Grant / award | +6,862 | $0.00 | $0 | May 19, 2026 | Form 4 ↗ |
| GLANTON RICHARD HDirector | Grant / award | +6,862 | $0.00 | $0 | May 19, 2026 | Form 4 ↗ |
| FORESE JAMES JDirector | Grant / award | +6,862 | $0.00 | $0 | May 19, 2026 | Form 4 ↗ |
| Lohmeier MichelleDirector | Grant / award | +6,862 | $0.00 | $0 | May 19, 2026 | Form 4 ↗ |
| PIZZI CHARLES PDirector | Grant / award | +6,862 | $0.00 | $0 | May 19, 2026 | Form 4 ↗ |
| Foglia Stephanie Athena10% owner | Gift | −528.7K | $0.00 | $0 | Apr 27, 2026 | Form 4 ↗ |
| Foglia Stephanie Athena10% owner | Sale | −1,000 | $18.00 | $18K | Apr 17, 2026 | Form 4 ↗ |
| Hammad Hanei WailEVP & Chief Operating Officer | Tax withholding | −2,865 | $15.10 | $43K | Mar 26, 2026 | Form 4 ↗ |
| Prajzner Edward JSr. EVP and CFO | Tax withholding | −1,367 | $14.05 | $19K | Mar 22, 2026 | Form 4 ↗ |
| Prajzner Edward JSr. EVP and CFO | Tax withholding | −2,239 | $14.61 | $33K | Mar 16, 2026 | Form 4 ↗ |
| Prajzner Edward JSr. EVP and CFO | Tax withholding | −2,540 | $14.82 | $38K | Mar 7, 2026 | Form 4 ↗ |
| Stamatakis Manuel N.Executive Chairman · Director | Tax withholding | −814 | $15.68 | $13K | Mar 4, 2026 | Form 4 ↗ |
| Hammad Hanei WailEVP & Chief Operating Officer | Tax withholding | −337 | $15.68 | $5K | Mar 4, 2026 | Form 4 ↗ |
| Prajzner Edward JSr. EVP and CFO | Tax withholding | −698 | $15.68 | $11K | Mar 4, 2026 | Form 4 ↗ |
| D'Alterio Gennaro A.EVP, Chief Commercial Officer | Tax withholding | −184 | $15.68 | $3K | Mar 4, 2026 | Form 4 ↗ |
| Foglia Stephanie Athena10% owner | Sale | −1,000 | $15.50 | $16K | Mar 3, 2026 | Form 4 ↗ |
| Prajzner Edward JSr. EVP and CFO | Tax withholding | −1,303 | $15.28 | $20K | Feb 28, 2026 | Form 4 ↗ |
| D'Alterio Gennaro A.EVP, Chief Commercial Officer | Tax withholding | −862 | $15.28 | $13K | Feb 28, 2026 | Form 4 ↗ |
Fund Holders
Mutual funds and ETFs holding MG · SEC Form N-PORT
| Fund | Shares | Value | % of fund | As of |
|---|---|---|---|---|
| VANGUARD TOTAL STOCK MARKET INDEX FUND VANGUARD INDEX FUNDS | 813.1K | $14.2M | 0.00% | Jun 30, 2026 |
| Royce Small-Cap Opportunity Fund ROYCE FUND | 556.3K | $9.7M | 0.69% | Jun 30, 2026 |
| First Eagle Small Cap Opportunity Fund First Eagle Funds | 536.7K | $8.2M | 0.28% | Jul 31, 2026 |
| iShares Russell 2000 ETF iShares Trust | 439.6K | $7.7M | 0.01% | Jun 30, 2026 |
| Federated Hermes MDT Small Cap Core Fund Federated Hermes MDT Series | 499.2K | $7.6M | 0.34% | Jul 31, 2026 |
| DWS Small Cap Core Fund DEUTSCHE DWS INVESTMENT TRUST | 372.2K | $6.5M | 0.56% | Jun 30, 2026 |
| U.S. SMALL CAP VALUE PORTFOLIO DFA INVESTMENT DIMENSIONS GROUP INC | 384.6K | $5.8M | 0.03% | Jul 31, 2026 |
| ROYCE MICRO-CAP TRUST, INC. | 254.6K | $4.4M | 0.49% | Jun 30, 2026 |
| EA Bridgeway Omni Small-Cap Value ETF EA Series Trust | 225.5K | $3.9M | 0.16% | Jun 30, 2026 |
| VANGUARD EXTENDED MARKET INDEX FUND VANGUARD INDEX FUNDS | 214.6K | $3.7M | 0.00% | Jun 30, 2026 |
Mutual funds and ETFs whose N-PORT filings list MG's shares (CUSIP 60649T107), each fund at its latest report since Mar 7, 2026, largest positions first. Bonds, options and short positions are left out.
Activist & Passive Stakes
Schedule 13D / 13G beneficial-ownership filings
- 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. VahaviolosSCHEDULE 13D/A · activist (13D) · 3.9M shares12.3%
Sep 21, 2026 · ↗ - Aspasia Felice VahaviolosSCHEDULE 13D/A · activist (13D) · 6.1M shares19.1%
Sep 21, 2026 · ↗ - Stephanie Athena FogliaSCHEDULE 13D/A · activist (13D) · 5.5M shares17.4%
Sep 21, 2026 · ↗ - Thomas E. LynchSCHEDULE 13D/A · activist (13D) · 1.9M shares6.1%
Sep 18, 2026 · ↗ - Mill Road Capital III GP LLCSCHEDULE 13D/A · activist (13D) · 1.9M shares6.1%
Sep 18, 2026 · ↗ - Mill Road Capital III, L.P.SCHEDULE 13D/A · activist (13D) · 1.9M shares6.1%
Sep 18, 2026 · ↗ - 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. VahaviolosSCHEDULE 13D/A · activist (13D) · 3.9M shares12.3%
Sep 14, 2026 · ↗ - Stephanie Athena FogliaSCHEDULE 13D/A · activist (13D) · 5.5M shares17.4%
Sep 14, 2026 · ↗ - Aspasia Felice VahaviolosSCHEDULE 13G/A · passive (13G) · 6.1M shares19.2%
Aug 13, 2026 · ↗ - 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. VahaviolosSCHEDULE 13D/A · activist (13D) · 4.3M shares13.6%
Jun 12, 2026 · ↗
Corporate Lobbying
Estimated quarterly lobbying spending reported under the LDA, filings naming Mistras Group, Inc. as client
No lobbying filings found naming Mistras Group, Inc. as the client.
Government Contracts
Federal awards to mistras · USAspending
$65KAwarded · 2 contracts on record
U.S. Patents
Recent USPTO applications naming Mistras Group, Inc.
No USPTO patent applications found for Mistras Group, Inc..
Annual Financials
From MG's 10-K filings · XBRL
No annual XBRL figures on record for MG. KeyVex's fundamentals cover about 130 large companies so far.
Stock Splits
Every split and reverse split in the price history
No stock splits in MG's price history.
Material Events (8-K)
Corporate events filed with the SEC
About Mistras Group, Inc.
From SEC EDGAR company records
Industry (SIC 8711)Services-Engineering Services
SectorIndustrials
HeadquartersPRINCETON JUNCTION, NJ
IncorporatedDE
SEC CIK0001436126 ↗