Mistras Group (MG) Executive Chairman granted 40,000 RSUs in Form 4 filing

Rhea-AI Filing Summary

Mistras Group, Inc. insider Manuel N. Stamatakis, a director and Executive Chairman, reported receiving an equity grant in the form of restricted stock units. On 01/02/2026, he was awarded 40,000 shares of common stock at a stated price of $0, increasing his beneficial ownership to 424,299 shares held directly.

The filing explains that this grant is an award of restricted stock units that will vest 100% on the first anniversary of the grant date, meaning the units are subject to a one-year vesting period before fully settling into shares.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Stamatakis Manuel N.

(Last) (First) (Middle)

C/O MISTRAS GROUP, INC.

195 CLARKSVILLE ROAD

(Street)

PRINCETON JUNCTION NJ 08550

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Mistras Group, Inc. [ MG ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive Chairman

3. Date of Earliest Transaction (Month/Day/Year)
01/02/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/02/2026		A		40,000(1)	A	$0	424,299	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents an award of restricted stock units that will vest 100% on the first anniversary date of the grant.

	/s/ Laura Boswell, attorney-in-fact for Manuel N. Stamatakis J. Prajzner	01/05/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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FAQ

What insider transaction did Mistras Group, Inc. (MG) report for Manuel N. Stamatakis?

The company reported that Manuel N. Stamatakis received an award of 40,000 restricted stock units of Mistras Group, Inc. common stock on 01/02/2026.

What is Manuel N. Stamatakis’s role at Mistras Group, Inc. (MG)?

He is listed as a Director and an Officer, serving as Executive Chairman of Mistras Group, Inc.

How many Mistras Group, Inc. (MG) shares does Manuel N. Stamatakis beneficially own after this transaction?

Following the reported award, Manuel N. Stamatakis beneficially owns 424,299 shares of Mistras Group, Inc. common stock held directly.

What are the vesting terms of the 40,000 restricted stock units reported by Mistras Group, Inc. (MG)?

The filing states that the 40,000 restricted stock units will vest 100% on the first anniversary date of the grant.

What was the reported transaction price for the Mistras Group, Inc. (MG) restricted stock unit grant?

The restricted stock unit award for 40,000 shares was reported with a transaction price of $0 per share.

Was the Mistras Group, Inc. (MG) Form 4 filed for one or multiple reporting persons?

The document indicates that the Form 4 was filed by one reporting person, namely Manuel N. Stamatakis.