| 2026-09-18 | 8-K | 10.2 | Form of Voting Agreement (stockholder form). |
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| 2026-09-18 | 8-K | 10.1 | Form of Voting Agreement (director and officer form). |
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| 2026-08-10 | 10-Q | 10.1 | Amended Credit Agreement, dated August 5, 2026 |
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| 2026-03-11 | 10-K | 10.11 | Description of Compensation for Non-Employee Directors effective January 1, 2025. |
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| 2025-11-06 | 10-Q | 10.5 | Employment Agreement, dated September 15, 2025, between the Company and Eileen Coggins, Executive Vice President and Chief Legal Officer. |
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| 2025-11-06 | 10-Q | 10.4 | Restricted Stock Unit Certificate, dated September 15, 2025, between the Company and Eileen Coggins, Executive Vice President and Chief Legal Officer. |
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| 2025-11-06 | 10-Q | 10.3 | Option Award Agreement, dated September 15, 2025, between the Company and Eileen Coggins, Executive Vice President and Chief Legal Officer. |
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| 2025-09-10 | 8-K | 10.2 | Restricted Stock Unit Certificate between the Company and Natalia Shuman |
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| 2025-09-10 | 8-K | 10.1 | Option Award Agreement between the Company and Natalia Shuman |
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| 2025-05-09 | 10-Q | 10.1 | Stock Option Award Agreement between the registrant and Manuel Stamatakis dated January 6, 2025 |
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| 2025-03-11 | 10-K | 10.10 | Mistras Group, Inc. Executive Severance Plan adopted on December 4, 2024 |
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| 2025-01-02 | 8-K | 10.1 | Employment Agreement dated December 31, 2024 between the Company and Edward Prajzner |
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| 2025-01-02 | 8-K/A | 10.2 | Form of Stock Option Award Agreement between the Company and Manuel Stamatakis |
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| 2025-01-02 | 8-K/A | 10.1 | Employment Agreement dated December 31, 2024 between the Company and Manuel Stamatakis |
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| 2024-12-05 | 8-K | 10.1 | Employment Agreement dated December 5, 2024 between the Company and Natalia Shuman-Fabbri |
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| 2024-09-18 | 8-K | 10.1 | Mistras Group, Inc. Executive Severance Plan |
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| 2024-05-03 | 10-Q | 10.2 | Employment Agreement between the registrant and Hani Hammad dated March 26, 2024 |
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| 2024-03-11 | 10-K | 10.18 | Inducement Award between the Company and Manuel N. Stamatakis dated October 11, 2023 |
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| 2024-03-11 | 10-K | 10.16 | Employment Agreement between the Company and John A. Smith dated October 1, 2023 |
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| 2024-03-01 | 8-K | 10.1 | First Amendment, dated February 27, 2024, to the Credit Agreement, dated August 1, 2022 |
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| 2023-12-08 | 8-K | 10.1 | Separation Agreement (and General Release of Claims attached thereto) between Dennis Bertolotti and Mistras Group, Inc. |
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| 2023-11-06 | 10-Q | 10.1 | Employment Agreement between the Company and Gennaro A. D'Alterio dated September 11, 2023 (filed herewith). |
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| 2023-10-10 | 8-K | 10.2 | Form of Inducement Award Agreement between the Company and Manuel N. Stamatakis. |
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| 2023-10-10 | 8-K | 10.1 | Letter Agreement dated October 9, 2023, between the Company and Manuel N. Stamatakis. |
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| 2023-05-05 | 10-Q | 10.2 | Description of Compensation for Non-Employee Directors effective January 1, 2023. |
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| 2023-03-15 | 10-K | 10.1 | Credit Agreement, dated August 1, 2022. |
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| 2023-03-08 | 8-K | 10.1 | Separation Agreement and General Release between Jonathan Wolk and Mistras Group, Inc. |
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| 2022-08-05 | 10-Q | 10.2 | Third Amendment to Mistras Group, Inc. 2016 Long-Term Incentive Plan |
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| 2022-08-05 | 10-Q | 10.1 | Settlement Agreement, amended May 3, 2022, regarding the settlement of the two legal proceedings captioned Price v. Mistras Group, Inc |
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| 2022-08-02 | 8-K | 10.1 | Credit Agreement, dated August 1, 2022. |
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| 2021-11-03 | 10-Q | 10.1 | Settlement Agreement, dated October 5, 2021, regarding the settlement of the two legal proceedings captioned Price v. Mistras Group, Inc |
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| 2021-08-04 | 10-Q | 10.2 | Memorandum of Understanding, dated May 4, 2021, regarding the settlement of the two legal proceedings captioned Price v. Mistras Group, Inc. |
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| 2021-05-20 | 8-K | 10.1 | Fifth Amendment, dated May 19, 2021, to Fifth Amended and Restated Credit Agreement, dated December 13, 2018. |
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| 2021-05-07 | 10-Q | 10.1 | Fourth Amendment, dated February 11, 2021, to the Fifth Amended and Restated Credit Agreement, |
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| 2021-03-16 | 10-K | 10.10 | Amendment No. 2, dated December 1, 2020, to the 2016 Long-Term Incentive Plan. |
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| 2020-08-07 | 10-Q | 10.2 | First Amendment to Mistras Group, Inc. 2016 Long-Term Incentive Plan dated May 19, 2020. |
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| 2020-05-19 | 10-Q | 10.2 | Form of Restricted Stock Unit Certificate for awards to senior officers under the Mistras Group, Inc. 2016 Long-Term Incentive Plan. |
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| 2020-05-15 | 8-K | 10.1 | Third Amendment, dated March 15, 2020, to Fifth Amended and Restated Credit Agreement, dated December 13, 2018 |
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| 2020-03-27 | 10-K | 10.3 | First Amendment, dated October 11, 2019, to Fifth Amended and Restated Credit Agreement dated December 13, 2018 |
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| 2020-03-13 | 8-K | 10.1 | Second Amendment, dated March 9, 2020, to Fifth Amended and Restated Credit Agreement, dated December 13, 2018 |
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| 2019-03-18 | 10-K | 10.11 | SEVERANCE PLAN |
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| 2018-12-13 | 8-K | 10.1 | CREDIT AGREEMENT |
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| 2018-05-08 | 10-Q | 10.2 | DB EMPLOYMENT AGREEMENT |
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| 2018-05-08 | 10-Q | 10.1 | SJV EMPLOYMENT AGREEMENT |
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| 2018-03-14 | 10-K | 10.19 | DIRECTOR COMPENSATION |
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| 2018-03-14 | 10-K | 10.3 | CREDIT AGREEMENT |
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| 2017-03-20 | 10-KT | 10.16 | RSU CERTIFICATE |
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| 2016-10-07 | 10-Q | 10.2 | JOINT STIPULATION OF SETTLEMENT AND RELEASE |
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| 2016-10-07 | 10-Q | 10.1 | SJV SHARE REPURCHASE AGREEMENT |
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| 2015-01-09 | 10-Q | 10.1 | Third Amendment and Modification Agreement, dated October 31, 2014 to the Third Amended and Restated Credit Agreement, dated December 21, 2011 |
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| 2014-08-08 | 10-K | 10.13 | Description of Compensation for Non-Employee Directors (Fiscal 2015) |
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| 2014-08-08 | 10-K | 10.12 | Mistras Group Severance Plan as amended (April 2014) |
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| 2014-08-08 | 10-K | 10.11 | Form of performance share unit awards letter under 2009 Long-Term Incentive Plan |
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| 2014-04-09 | 10-Q | 10.1 | Amendment No. 2 to Employment Agreement, dated July 14, 2010, between the Company and Sotirios J. Vahaviolos |
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| 2013-08-14 | 10-K | 10.15 | Mistras Group Severance Plan (April 2013) |
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| 2012-04-09 | 10-Q | 10.1 | Third Amended and Restated Credit Agreement dated December 21, 2011. |
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| 2011-08-12 | 10-K | 10.13 | Compensation Plan for Non-Employee Directors (June 2011) |
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| 2011-01-13 | 10-Q | 10.1 | Form of Restricted Stock Unit Certificate for awards under the 2009 Long-Term Incentive Plan. |
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| 2010-10-14 | 10-Q | 10.2 | Compensation Plan for Non-Employee Directors (July 2010) |
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| 2010-10-14 | 10-Q | 10.1 | Amendment to Employment Agreement, dated July 14, 2010 between Sotirios J. Vahaviolos and Mistras Group, Inc. |
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| 2009-12-18 | 8-K | 10.1 | Amendment, dated as of December 14, 2009, to the Second Amended and Restated Credit Agreement, dated July 22, 2009. |
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