Mistras Group, Inc.

Quarterly Report for period ending 2023-09-30

Quarterly Report for period ending 2023-06-30

Quarterly Report for period ending 2023-03-31

Annual Report for period ending 2022-12-31

Annual Report for period ending 2022-12-31

Quarterly Report for period ending 2022-09-30

Quarterly Report for period ending 2022-06-30

Quarterly Report for period ending 2022-03-31

Annual Report for period ending 2021-12-31

Quarterly Report for period ending 2021-09-30

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

Current report filing

A correspondence can be sent as a document with another submission type or can be sent as a separate submission.

Filing for proposed sale of securities under Rule 144

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Annual report to security holders

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Specialized Disclosure Report filed pursuant to Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act relating to the use of conflict minerals (Rule 13p-1)

Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust: Major Shareholders

Sotirios Vahaviolos January 2023 2-Year Grantor Retained Annuity Trust: Major Shareholders

Vahaviolos Sotirios J.: Major Shareholders

Vahaviolos Sotirios J.: Major Shareholders

GLANTON RICHARD H: Statement of changes in beneficial ownership of securities

Vahaviolos Sotirios J.: Annual statement of changes in beneficial ownership of securities

Keefe Michael C: Statement of changes in beneficial ownership of securities

Lange Michael J.: Statement of changes in beneficial ownership of securities

Prajzner Edward J: Statement of changes in beneficial ownership of securities

DEBENEDICTIS NICHOLAS: Statement of changes in beneficial ownership of securities

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Prospectus filed pursuant to Rule 424(b)(5)

Prospectus filed pursuant to Rule 424(b)(5)

Registration statement for specified transactions by certain issuers

Registration statement for specified transactions by certain issuers

Initial registration statement for securities to be offered to employees pursuant to employee benefit plans

Prospectus filed pursuant to Rule 424(b)(4)

General form of registration statement for all companies including face-amount certificate companies

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive proxy statements

Definitive proxy statements

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive proxy statements

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive proxy statements

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.

Definitive additional proxy soliciting materials including Rule 14(a)(12) material. Note: Submission type DEFA14A can be filed as part of Form 8-K. For filers subject to 8-K filing requirements, we recommend the use of the 8-K combined form type as the easiest method for fulfilling your filing requirement for both forms.