Eileen Mary Coggins - 15 Sep 2025 Form 4/A - Amendment Insider Report for Mistras Group, Inc. (MG)

Role: EVP & Chief Legal Officer
Signature: /s/ Laura Boswell, attorney in fact for Eileen Mary Coggins
Issuer symbol: MG
Transactions as of: 15 Sep 2025
Net transactions value: $0
Form type: 4/A - Amendment
Filing time: 01 Oct 2025, 17:04:52 UTC
Date Of Original Report: 25 Sep 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Coggins Eileen Mary	EVP & Chief Legal Officer	195 CLARKSVILLE ROAD, PRINCETON JUNCTION	/s/ Laura Boswell, attorney in fact for Eileen Mary Coggins	01 Oct 2025	0002087458

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	MG	Common Stock	Award	$0	+15,000		$0.000000	15,000	15 Sep 2025	Direct	F1, F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	MG	Right to buy	Award	$0	+25,000		$0.000000	25,000	15 Sep 2025	Common Stock	25,000	$9.55	Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents an award of restricted stock units that will vest 100% on the first anniversary date of the grant.
F2	This corrects the transaction code which was incorrectly filed originally as "P" (Purchase) rather than as "A" (Award) which these transactions represent.