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 |
| 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 |
| 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 | — |
| SD | Specialized disclosure (conflict minerals) | May 27, 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 |
| 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 |
| 10-K | Annual report | Mar 11, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 4, 2026 | Mar 4, 2026 |
| 10-Q | Quarterly report | Nov 6, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2025 | Nov 4, 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 |
| UPLOAD | Letter from the SEC | Jun 12, 2025 | — |
| CORRESP | Letter to the SEC | Jun 12, 2025 | — |
| UPLOAD | Letter from the SEC | Jun 11, 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 |
| 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 |
| 10-K | Annual report | Mar 11, 2025 | Dec 31, 2024 |
| 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 |
| 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 |
| 8-K |
Current report
Other events
|
Sep 18, 2024 | Sep 18, 2024 |
| 10-Q | Quarterly report | Aug 2, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Jul 31, 2024 | Jul 31, 2024 |
| SD | Specialized disclosure (conflict minerals) | May 30, 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 |
| 10-Q | Quarterly report | May 3, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 1, 2024 | May 1, 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 |
| 10-K | Annual report | Mar 11, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 6, 2024 | Mar 6, 2024 |
| 8-K |
Current report
Material agreement
|
Mar 1, 2024 | Feb 27, 2024 |
| UPLOAD | Letter from the SEC | Dec 15, 2023 | — |
| CORRESP | Letter to the SEC | Dec 12, 2023 | — |
| 8-K |
Current report
Officer or director change
|
Dec 8, 2023 | Dec 6, 2023 |
| UPLOAD | Letter from the SEC | Nov 9, 2023 | — |
| 10-Q | Quarterly report | Nov 6, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations, Regulation FD disclosure
|
Nov 2, 2023 | Nov 2, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 13, 2023 | Oct 10, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Oct 10, 2023 | Oct 9, 2023 |
| 10-Q | Quarterly report | Aug 7, 2023 | Jun 30, 2023 |
| 8-K/A |
Amended current report
Results of operations
|
Aug 2, 2023 | Aug 2, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 2, 2023 | Aug 2, 2023 |
| SD | Specialized disclosure (conflict minerals) | May 30, 2023 | — |
| 8-K |
Current report
Shareholder vote results
|
May 24, 2023 | May 22, 2023 |
| 10-Q | Quarterly report | May 5, 2023 | Mar 31, 2023 |
| 10-K/A | Amended annual report | May 5, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 3, 2023 | May 3, 2023 |
| ARS | Annual report to shareholders | Apr 12, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Apr 12, 2023 | — |
| DEF 14A | Proxy statement | Apr 12, 2023 | — |
| 8-K |
Current report
Auditor change
|
Apr 3, 2023 | Mar 29, 2023 |
| 10-K | Annual report | Mar 15, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Material agreement, Results of operations
|
Mar 8, 2023 | Mar 3, 2023 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Feb 9, 2023 | Feb 8, 2023 |
| 10-Q | Quarterly report | Nov 7, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2022 | Nov 2, 2022 |
| S-8 | Employee stock plan registration | Aug 5, 2022 | — |
| 10-Q | Quarterly report | Aug 5, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2022 | Aug 3, 2022 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
Aug 2, 2022 | Aug 1, 2022 |
| SD | Specialized disclosure (conflict minerals) | Jun 24, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
May 25, 2022 | May 23, 2022 |
| 10-Q | Quarterly report | May 6, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 3, 2022 | May 3, 2022 |
| DEFA14A | Additional proxy material | Apr 13, 2022 | — |
| 8-K |
Current report
Regulation FD disclosure
|
Apr 13, 2022 | Apr 13, 2022 |
| DEF 14A | Proxy statement | Apr 13, 2022 | May 23, 2022 |
| 10-K | Annual report | Mar 14, 2022 | Dec 31, 2021 |
| 8-K | Current report | Mar 9, 2022 | Mar 9, 2022 |
| 10-Q | Quarterly report | Nov 3, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Nov 2, 2021 | Nov 2, 2021 |
| 10-Q | Quarterly report | Aug 4, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 3, 2021 | Aug 2, 2021 |
| SD/A | Sd | May 28, 2021 | — |
| SD | Specialized disclosure (conflict minerals) | May 28, 2021 | — |
| 8-K |
Current report
Shareholder vote results
|
May 26, 2021 | May 24, 2021 |
| 8-K |
Current report
Material agreement, Regulation FD disclosure
|
May 20, 2021 | May 19, 2021 |
| 10-Q | Quarterly report | May 7, 2021 | Mar 31, 2021 |
| 8-K |
Current report
Results of operations
|
May 5, 2021 | May 5, 2021 |
| DEFA14A | Additional proxy material | Apr 14, 2021 | — |
| DEF 14A | Proxy statement | Apr 14, 2021 | May 24, 2021 |
| 8-K |
Current report
Officer or director change
|
Mar 29, 2021 | Mar 24, 2021 |
| S-8 | Employee stock plan registration | Mar 17, 2021 | — |
| 10-K | Annual report | Mar 16, 2021 | Dec 31, 2020 |
| 8-K |
Current report
Results of operations
|
Mar 16, 2021 | Mar 16, 2021 |
| 8-K |
Current report
Officer or director change
|
Dec 2, 2020 | Nov 25, 2020 |
| 10-Q | Quarterly report | Nov 6, 2020 | Sep 30, 2020 |
| 8-K |
Current report
Results of operations
|
Nov 4, 2020 | Nov 4, 2020 |
| 10-Q | Quarterly report | Aug 7, 2020 | Jun 30, 2020 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2020 | Aug 5, 2020 |
| SD | Specialized disclosure (conflict minerals) | Jun 10, 2020 | — |
| 8-K |
Current report
Shareholder vote results
|
May 22, 2020 | May 19, 2020 |
| 10-Q | Quarterly report | May 19, 2020 | Mar 31, 2020 |
| 8-K |
Current report
Results of operations
|
May 19, 2020 | May 18, 2020 |
| 8-K |
Current report
Material agreement
|
May 15, 2020 | May 15, 2020 |
| 8-K |
Current report
Other events
|
May 11, 2020 | May 11, 2020 |
| DEFA14A | Additional proxy material | May 5, 2020 | — |
| DEFA14A | Additional proxy material | Apr 9, 2020 | — |
| DEF 14A | Proxy statement | Apr 9, 2020 | May 19, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 6, 2020 | Apr 1, 2020 |
| 8-K |
Current report
Officer or director change
|
Apr 2, 2020 | Apr 1, 2020 |
| 10-K | Annual report | Mar 27, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Results of operations
|
Mar 26, 2020 | Mar 25, 2020 |
| NT 10-K | Filing | Mar 17, 2020 | Dec 31, 2019 |
| 8-K |
Current report
Material agreement
|
Mar 13, 2020 | Mar 9, 2020 |
| 10-Q | Quarterly report | Nov 6, 2019 | Sep 30, 2019 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2019 | Nov 4, 2019 |
| 10-Q | Quarterly report | Aug 6, 2019 | Jun 30, 2019 |
| 8-K |
Current report
Results of operations
|
Aug 5, 2019 | Aug 5, 2019 |
| SD | Specialized disclosure (conflict minerals) | May 23, 2019 | — |
| 8-K |
Current report
Shareholder vote results
|
May 16, 2019 | May 15, 2019 |
| 10-Q | Quarterly report | May 8, 2019 | Mar 31, 2019 |
| 8-K |
Current report
Results of operations
|
May 7, 2019 | May 6, 2019 |
| DEFA14A | Additional proxy material | Apr 5, 2019 | — |
| DEF 14A | Proxy statement | Apr 5, 2019 | May 15, 2019 |
| 10-K | Annual report | Mar 18, 2019 | Dec 31, 2018 |
| 8-K |
Current report
Results of operations
|
Mar 11, 2019 | Mar 11, 2019 |
| 8-K/A |
Amended current report
Acquisition or sale of assets
|
Feb 28, 2019 | Dec 13, 2018 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, New debt, Regulation FD disclosure
|
Dec 13, 2018 | Dec 13, 2018 |
| 10-Q | Quarterly report | Nov 6, 2018 | Sep 30, 2018 |
| 8-K |
Current report
Results of operations
|
Nov 5, 2018 | Nov 5, 2018 |
| 10-Q | Quarterly report | Aug 7, 2018 | Jun 30, 2018 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2018 | Aug 6, 2018 |
| SD | Specialized disclosure (conflict minerals) | May 25, 2018 | — |
| 8-K |
Current report
Shareholder vote results
|
May 17, 2018 | May 15, 2018 |
| 10-Q | Quarterly report | May 8, 2018 | Mar 31, 2018 |
| 8-K/A |
Amended current report
Results of operations
|
May 8, 2018 | May 8, 2018 |
| 8-K |
Current report
Results of operations
|
May 7, 2018 | May 7, 2018 |
| DEFA14A | Additional proxy material | Apr 4, 2018 | — |
| DEF 14A | Proxy statement | Apr 4, 2018 | May 15, 2018 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Mar 15, 2018 | Mar 13, 2018 |
| 10-K | Annual report | Mar 14, 2018 | Dec 31, 2017 |
| 8-K |
Current report
Results of operations
|
Mar 12, 2018 | Mar 12, 2018 |
| 8-K |
Current report
Material agreement, Officer or director change
|
Mar 6, 2018 | Feb 28, 2018 |
| 8-K |
Current report
Regulation FD disclosure
|
Jan 17, 2018 | Jan 17, 2018 |
| 8-K |
Current report
Officer or director change, Regulation FD disclosure
|
Jan 8, 2018 | Jan 2, 2018 |
| 8-K |
Current report
Material agreement, Acquisition or sale of assets, Regulation FD disclosure
|
Dec 21, 2017 | Dec 15, 2017 |
| 8-K |
Current report
Material agreement
|
Dec 14, 2017 | Dec 8, 2017 |
| 10-Q | Quarterly report | Nov 9, 2017 | Sep 30, 2017 |
| 8-K |
Current report
Results of operations
|
Nov 7, 2017 | Nov 6, 2017 |
| 10-Q | Quarterly report | Aug 9, 2017 | Jun 30, 2017 |
| 8-K |
Current report
Results of operations, Officer or director change
|
Aug 8, 2017 | Aug 5, 2017 |
| 8-K |
Current report
Other events
|
Jul 7, 2017 | Jun 30, 2017 |
| SD | Specialized disclosure (conflict minerals) | May 31, 2017 | — |
| 8-K |
Current report
Shareholder vote results
|
May 18, 2017 | May 16, 2017 |
| 10-Q | Quarterly report | May 9, 2017 | Mar 31, 2017 |
| 8-K |
Current report
Results of operations
|
May 8, 2017 | May 8, 2017 |
| DEF 14A | Proxy statement | Apr 17, 2017 | May 16, 2017 |
| S-8 | Employee stock plan registration | Mar 30, 2017 | — |
| 10-KT | Transition report | Mar 20, 2017 | Dec 31, 2016 |
| 8-K |
Current report
Results of operations
|
Mar 16, 2017 | Mar 16, 2017 |
| UPLOAD | Letter from the SEC | Feb 2, 2017 | — |
| CORRESP | Letter to the SEC | Jan 27, 2017 | — |
| UPLOAD | Letter from the SEC | Jan 20, 2017 | — |
| 10-Q | Quarterly report | Jan 11, 2017 | Nov 30, 2016 |
| NT 10-Q | Filing | Jan 10, 2017 | Nov 30, 2016 |
| 8-K |
Current report
Results of operations, Bylaw or fiscal year change
|
Jan 4, 2017 | Jan 3, 2017 |
| 8-K |
Current report
Bylaw or fiscal year change, Shareholder vote results
|
Oct 20, 2016 | Oct 18, 2016 |
| 10-Q | Quarterly report | Oct 7, 2016 | Aug 31, 2016 |
| 8-K |
Current report
Results of operations
|
Oct 6, 2016 | Oct 6, 2016 |
| DEFA14A | Additional proxy material | Sep 7, 2016 | — |
| DEF 14A | Proxy statement | Sep 7, 2016 | Oct 18, 2016 |
| PRE 14A | Preliminary proxy statement | Aug 24, 2016 | Oct 18, 2016 |
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.
New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.
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
Other Services-Engineering Services companies
- Tetra Tech Inc TTEK
- Stantec Inc STN
- Aecom ACM
- Vse Corp VSEC
- Willdan Group, Inc. WLDN
- Julong Holding Ltd JLHL
- HyOrc Corp HYOR
- Acorn Energy, Inc. ACFN
Source: SEC EDGAR filings. This is company-reported data, not investment advice.