Mistras Group, Inc. SEC filings MG
Mistras Group, Inc. has 1,000 filings in SEC EDGAR's recent list, going back to Feb 24, 2011. Its latest annual report, Form ARS, was filed on Apr 8, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Nov 2, 2026, covering the quarter ended Sep 30, 2026. The most recent current report (Form 8-K) was filed on Oct 28, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 2, 2026 | Sep 30, 2026 |
| DEFA14A | Additional proxy material | Oct 28, 2026 | — |
| 8-K |
Current report
Other events
|
Oct 28, 2026 | Oct 27, 2026 |
| DEFM14A | Filing | Oct 27, 2026 | — |
| PREM14A | Filing | Oct 15, 2026 | Oct 15, 2026 |
| 4/A | Filing | Oct 7, 2026 | Sep 10, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Oct 7, 2026 | — |
| 4 | Insider transaction | Sep 22, 2026 | Sep 20, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 21, 2026 | — |
| 4 | Insider transaction | Sep 18, 2026 | Sep 18, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| DEFA14A | Additional proxy material | Sep 18, 2026 | — |
| 8-K |
Current report
Material agreement, Officer or director change, Regulation FD disclosure, Other events
|
Sep 18, 2026 | Sep 17, 2026 |
| 4 | Insider transaction | Sep 14, 2026 | Sep 10, 2026 |
| 4 | Insider transaction | Sep 14, 2026 | Sep 10, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Sep 14, 2026 | — |
| 4 | Insider transaction | Sep 9, 2026 | Sep 8, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 13, 2026 | — |
| 10-Q | Quarterly report | Aug 10, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2026 | Aug 10, 2026 |
| S-8 | Employee stock plan registration | Jun 18, 2026 | — |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 12, 2026 | — |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| 4 | Insider transaction | Jun 12, 2026 | Jun 10, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Jun 4, 2026 | — |
| 4 | Insider transaction | Jun 4, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Jun 4, 2026 | Jan 5, 2026 |
| 3 | Initial insider ownership | Jun 4, 2026 | Dec 31, 2025 |
| SD | Specialized disclosure (conflict minerals) | May 27, 2026 | — |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 4 | Insider transaction | May 21, 2026 | May 19, 2026 |
| 8-K |
Current report
Shareholder vote results
|
May 20, 2026 | May 19, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 5, 2026 | May 5, 2026 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Apr 23, 2026 | — |
| ARS | Annual report to shareholders | Apr 8, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Apr 7, 2026 | — |
| DEF 14A | Proxy statement | Apr 7, 2026 | May 19, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 31, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Mar 31, 2026 | — |
| SCHEDULE 13D | Ownership over 5% (active) | Mar 31, 2026 | — |
| 4 | Insider transaction | Mar 26, 2026 | Mar 26, 2026 |
| 4 | Insider transaction | Mar 23, 2026 | Mar 22, 2026 |
| 4 | Insider transaction | Mar 17, 2026 | Mar 16, 2026 |
| 10-K | Annual report | Mar 11, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 10, 2026 | Mar 4, 2026 |
| 4/A | Primary document | Mar 9, 2026 | Mar 25, 2025 |
| 4 | Insider transaction | Mar 6, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Mar 6, 2026 | Feb 25, 2026 |
| 4 | Insider transaction | Mar 4, 2026 | Mar 25, 2025 |
| 4 | Insider transaction | Mar 4, 2026 | Feb 25, 2026 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Feb 25, 2026 |
| 3 | Initial insider ownership | Feb 27, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Feb 27, 2026 | Dec 31, 2025 |
| 4/A | Primary document | Jan 9, 2026 | Jan 2, 2026 |
| 4/A | Primary document | Jan 9, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 5, 2026 |
| 4 | Insider transaction | Jan 5, 2026 | Jan 2, 2026 |
| 4 | Insider transaction | Dec 5, 2025 | Dec 4, 2025 |
| 4 | Insider transaction | Dec 4, 2025 | Sep 24, 2025 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2025 | Nov 4, 2025 |
| 4/A | Primary document | Oct 1, 2025 | Sep 15, 2025 |
| 3/A | Primary document | Oct 1, 2025 | Sep 15, 2025 |
| 4 | Insider transaction | Sep 25, 2025 | Sep 15, 2025 |
| 3 | Initial insider ownership | Sep 25, 2025 | Sep 15, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 11, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 11, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Sep 11, 2025 | — |
| 4 | Insider transaction | Sep 10, 2025 | Jul 2, 2025 |
| 4 | Insider transaction | Sep 10, 2025 | Jul 2, 2025 |
| 3 | Initial insider ownership | Sep 10, 2025 | May 23, 2025 |
| 4 | Insider transaction | Sep 10, 2025 | Sep 8, 2025 |
| 8-K |
Current report
Officer or director change
|
Sep 10, 2025 | Sep 8, 2025 |
| 10-Q | Quarterly report | Aug 11, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2025 | Aug 6, 2025 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jul 15, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 12, 2025 | — |
| CORRESP | Letter to the SEC | Jun 12, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 11, 2025 | — |
| 4 | Insider transaction | Jun 6, 2025 | Jun 5, 2025 |
| ARS/A | Filing | Jun 2, 2025 | Dec 31, 2024 |
| CORRESP | Letter to the SEC | Jun 2, 2025 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
May 23, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 19, 2025 |
| UPLOAD | Letter from the SEC | May 19, 2025 | — |
| 10-Q | Quarterly report | May 9, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 8, 2025 | May 7, 2025 |
| ARS | Annual report to shareholders | Apr 9, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Apr 9, 2025 | — |
| DEF 14A | Proxy statement | Apr 9, 2025 | May 19, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 19, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 19, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 18, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 19, 2025 |
| 4 | Insider transaction | Mar 20, 2025 | Mar 19, 2025 |
| 10-K | Annual report | Mar 11, 2025 | Dec 31, 2024 |
| SCHEDULE 13D/A | Amended ownership over 5% (active) | Mar 10, 2025 | — |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 4 | Insider transaction | Mar 6, 2025 | Mar 5, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2025 | Mar 5, 2025 |
| 8-K |
Current report
Officer or director change
|
Feb 13, 2025 | Feb 7, 2025 |
| 8-K |
Current report
Regulation FD disclosure
|
Feb 7, 2025 | Feb 6, 2025 |
| 3 | Initial insider ownership | Jan 10, 2025 | Jan 1, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 6, 2025 |
| 4 | Insider transaction | Jan 7, 2025 | Jan 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Jan 2, 2025 | Dec 31, 2024 |
| 8-K/A |
Amended current report
Officer or director change
|
Jan 2, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 16, 2024 | Dec 12, 2024 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Dec 5, 2024 | Dec 5, 2024 |
| 10-Q | Quarterly report | Nov 4, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Oct 30, 2024 | Oct 30, 2024 |
| 8-K |
Current report
Agreement ended
|
Oct 30, 2024 | Oct 30, 2024 |
| 4 | Insider transaction | Sep 25, 2024 | Sep 25, 2024 |
| 4 | Insider transaction | Sep 24, 2024 | Sep 23, 2024 |
| 4 | Insider transaction | Sep 20, 2024 | Sep 20, 2024 |
| 4 | Insider transaction | Sep 20, 2024 | Sep 16, 2024 |
| 8-K |
Current report
Other events
|
Sep 18, 2024 | Sep 18, 2024 |
| 144 | Notice of proposed sale | Sep 16, 2024 | — |
| 4 | Insider transaction | Aug 19, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Jul 3, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Aug 7, 2024 |
| 4 | Insider transaction | Aug 19, 2024 | Dec 23, 2019 |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| SC 13D | Ownership over 5% (active) | Jul 9, 2024 | — |
| 4 | Insider transaction | Jun 20, 2024 | Jun 20, 2024 |
| 144 | Notice of proposed sale | Jun 20, 2024 | — |
| 144 | Notice of proposed sale | Jun 18, 2024 | — |
| SD | Specialized disclosure (conflict minerals) | May 30, 2024 | — |
| 144 | Notice of proposed sale | May 24, 2024 | — |
| S-8 | Employee stock plan registration | May 22, 2024 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
May 20, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 16, 2024 | May 14, 2024 |
| 4 | Insider transaction | May 3, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | May 3, 2024 | Mar 6, 2024 |
| 10-Q | Quarterly report | May 3, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 1, 2024 | May 1, 2024 |
| 4 | Insider transaction | Apr 5, 2024 | Apr 3, 2024 |
| 4 | Insider transaction | Apr 5, 2024 | Apr 3, 2024 |
| 4 | Insider transaction | Apr 5, 2024 | Apr 3, 2024 |
| 4 | Insider transaction | Apr 5, 2024 | Apr 3, 2024 |
| ARS | Annual report to shareholders | Apr 4, 2024 | Dec 31, 2023 |
| DEFA14A | Additional proxy material | Apr 4, 2024 | — |
| DEF 14A | Proxy statement | Apr 4, 2024 | May 14, 2024 |
| 4 | Insider transaction | Apr 3, 2024 | Mar 26, 2024 |
| 3 | Initial insider ownership | Apr 3, 2024 | Mar 26, 2024 |
| 4 | Insider transaction | Mar 27, 2024 | Nov 7, 2023 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 4 | Insider transaction | Mar 15, 2024 | Mar 13, 2024 |
| 144 | Notice of proposed sale | Mar 14, 2024 | — |
| 4 | Insider transaction | Mar 14, 2024 | Mar 12, 2024 |
| 144 | Notice of proposed sale | Mar 12, 2024 | — |
| 10-K | Annual report | Mar 11, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2024 | Mar 6, 2024 |
| 4 | Insider transaction | Mar 4, 2024 | Feb 28, 2024 |
| 4 | Insider transaction | Mar 4, 2024 | Feb 28, 2024 |
| 4 | Insider transaction | Mar 4, 2024 | Feb 28, 2024 |
| 4 | Insider transaction | Mar 4, 2024 | Feb 28, 2024 |
| 4 | Insider transaction | Mar 4, 2024 | Feb 28, 2024 |
| 8-K |
Current report
Material agreement
|
Mar 1, 2024 | Feb 27, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13D/A | Amended ownership over 5% (active) | Feb 14, 2024 | — |
| SC 13D | Ownership over 5% (active) | Feb 14, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| 4 | Insider transaction | Feb 9, 2024 | Dec 8, 2023 |
| 5 | Annual insider ownership | Feb 6, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Dec 20, 2023 | Dec 20, 2023 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Services-Engineering Services (SIC 8711)
- Listed as
- MG (NYSE)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Princeton Junction, NJ
- SEC filer status
- Accelerated filer
- SEC CIK
- 1436126
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.