Mistras Group (MG) insider logs 411,875-share bona fide gift

Rhea-AI Filing Summary

Mistras Group, Inc. major shareholder Aspasia F. Vahaviolos reported a bona fide gift of 411,875 shares of common stock on June 10, 2026. The transfer reflects an ordinary-course annuity payment from the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust to her. Following this non-cash transaction, she directly holds 1,794,839 shares of Mistras Group common stock.

Insider Trade Summary

411,875 shares gifted

Mixed 1 txn

Insider Vahaviolos Aspasia Felice

Role null

Type	Security	Shares	Price	Value
Gift	Common Stock	411,875	$0.00	--

Holdings After Transaction: Common Stock — 1,794,839 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Shares gifted: 411,875 shares Price per share: $0.00 per share Shares held after transaction: 1,794,839 shares +2 more

5 metrics

Shares gifted 411,875 shares Bona fide gift on June 10, 2026

Price per share $0.00 per share Reported consideration for gifted shares

Shares held after transaction 1,794,839 shares Direct holdings following the gift

Gift transactions 1 transaction, 411,875 shares Aggregate gift activity in this Form 4

Transaction code G (bona fide gift) SEC Form 4 transaction classification

Key Terms

bona fide gift, Grantor Retained Annuity Trust, ten percent owner, Form 4

4 terms

bona fide gift financial

"The transaction is coded as “G” with the description “Bona fide gift”."

A bona fide gift is a genuine, voluntary transfer of money, property, or benefits from one party to another made without expectation of repayment, services, or hidden conditions. Investors care because such gifts can affect company disclosures, related‑party transaction rules, tax treatment, and perceived conflicts of interest; think of it like someone giving you a present with no strings attached — but on a corporate scale, auditors and regulators need to verify it really is unconditional.

Grantor Retained Annuity Trust financial

"ordinary course annuity payment made by the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust"

A grantor retained annuity trust (GRAT) is an estate-planning tool where the person who creates the trust transfers assets into it but receives fixed cash payments (an annuity) from the trust for a set number of years; whatever remains after that term passes to designated beneficiaries. It matters to investors because it can shift future appreciation of assets out of the creator’s taxable estate—like putting an asset into a timed vending machine that pays you fixed amounts while any extra value that grows inside the machine goes to heirs with reduced gift or estate tax consequences.

ten percent owner financial

"the reporting person is flagged as a ten percent owner of Mistras Group, Inc."

Form 4 regulatory

"INSIDER FILING DATA (Form 4) describes this transaction for Mistras Group, Inc."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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Form 4 Insider Transactions: What Each Field Means →

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Vahaviolos Aspasia Felice

(Last) (First) (Middle)

7 RIDGEVIEW ROAD

(Street)

PRINCETON NEW JERSEY 08540

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/10/2026

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

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

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

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	06/10/2026		G(1)		411,875	A	$0	1,794,839	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 ordinary course annuity payment made by the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos ("GRAT") to the reporting person pursuant to the terms of the GRAT.

	/s/ Aspasia Vahaviolos	06/12/2026
	** 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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Aspasia F. Vahaviolos report for Mistras Group (MG)?

Aspasia F. Vahaviolos reported a bona fide gift of 411,875 shares of Mistras Group common stock. The transaction was recorded on June 10, 2026 and involved no cash consideration, as the shares were transferred as part of an annuity arrangement.

How many Mistras Group (MG) shares were involved in the reported gift?

The filing reports a transfer of 411,875 shares of Mistras Group common stock. These shares were characterized as a bona fide gift and represented an ordinary-course annuity payment from a Grantor Retained Annuity Trust established for Aspasia F. Vahaviolos.

What is Aspasia F. Vahaviolos’s Mistras Group (MG) ownership after the gift transaction?

After the reported transaction, Aspasia F. Vahaviolos directly holds 1,794,839 shares of Mistras Group common stock. This post-transaction figure reflects her direct position following receipt of shares via the annuity-related gift transfer from the 2025 Grantor Retained Annuity Trust.

Was cash paid in the Mistras Group (MG) insider gift transaction?

No cash was paid in this insider transaction; the per-share price is reported as $0.00. The filing describes the movement of 411,875 shares as a bona fide gift, constituting an annuity payment from a Grantor Retained Annuity Trust to Aspasia F. Vahaviolos.

How is the Mistras Group (MG) insider transaction classified in the Form 4?

The transaction is coded as “G” for bona fide gift and marked as a disposition. It is further described as a gift transfer tied to an ordinary-course annuity payment from the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust benefiting Aspasia F. Vahaviolos.

Who is the reporting person in the Mistras Group (MG) Form 4 and what is her status?

The reporting person is Aspasia F. Vahaviolos, identified as a more-than-ten-percent owner of Mistras Group, Inc. She is not listed as a director or officer in this filing but remains a significant shareholder based on her post-transaction share holdings.