STOCK TITAN

Trust linked to Mistras (MG) 10% owner gifts 411,875 shares

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Mistras Group, Inc. ten percent owner-related trust reported an internal share transfer, not a market trade. A Grantor Retained Annuity Trust associated with reporting person Stephanie Athena Foglia made a bona fide gift of 411,875 shares of common stock as an ordinary-course annuity payment pursuant to the trust’s terms.

After this transfer, the GRAT continued to hold 4,310,811 common shares indirectly for the reporting person, who as trustee has sole voting and disposition power but disclaims beneficial ownership except for her pecuniary interest. Additional indirect family holdings include shares held by a spouse and children, alongside 1,393,324 shares held directly.

Positive

  • None.

Negative

  • None.
Insider Foglia Stephanie Athena, 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos
Role null | null
Type Security Shares Price Value
Gift Common Stock 411,875 $0.00 --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
holding Common Stock -- -- --
Holdings After Transaction: Common Stock — 4,310,811 shares (Indirect, By GRAT); Common Stock — 1,393,324 shares (Direct, null)
Footnotes (1)
  1. Represents an ordinary course annuity payment made by the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos ("GRAT") pursuant to its terms. The reporting person is the trustee for the GRAT and holds sole power over the voting and disposition of the issuer's common stock held by the GRAT. The reporting person disclaims beneficial ownership of these shares except to the extent of her pecuniary interest therein.
Gifted shares 411,875 shares Bona fide gift by GRAT on 2026-06-10
GRAT holdings after transaction 4,310,811 shares Indirect common stock position following gift
Direct holdings 1,393,324 shares Common stock held directly after reported transactions
Spousal indirect holdings 1,692 shares Common stock held indirectly by spouse
Child indirect holdings example 54,008 shares One reported child-held indirect common stock position
Additional child holdings 52,547 shares Another reported child-held indirect common stock position
Grantor Retained Annuity Trust financial
"Represents an ordinary course annuity payment made by the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos ("GRAT") pursuant to its terms."
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.
bona fide gift financial
"transaction_code_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.
ten percent owner regulatory
""is_ten_percent_owner": 1"
pecuniary interest financial
"disclaims beneficial ownership of these shares except to the extent of her pecuniary interest therein."
indirect ownership financial
""ownership_type": "indirect""
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SEC Form 4
FORM 4UNITED 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*
Foglia Stephanie Athena

(Last)(First)(Middle)
195 CLARKKSVILLE ROAD

(Street)
PRINCETON JUNCTION NEW JERSEY 08550

(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)
DirectorX10% 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)
Form filed by One Reporting Person
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/10/2026G(1)411,875D$04,310,811IBy GRAT(2)
Common Stock1,393,324D
Common Stock15,366IBy Child
Common Stock52,547IBy Child
Common Stock20,106IBy Child
Common Stock52,547IBy Child
Common Stock19,005IBy Child
Common Stock54,008IBy Child
Common Stock1,692IBy Spouse
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
1. Name and Address of Reporting Person*
Foglia Stephanie Athena

(Last)(First)(Middle)
195 CLARKKSVILLE ROAD

(Street)
PRINCETON JUNCTION NEW JERSEY 08550

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos

(Last)(First)(Middle)
C/O STEPHANIE FOGLIA
504 HIRAM ROAD

(Street)
PLYMOUTH MEETING PENNSYLVANIA 19462

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
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") pursuant to its terms.
2. The reporting person is the trustee for the GRAT and holds sole power over the voting and disposition of the issuer's common stock held by the GRAT. The reporting person disclaims beneficial ownership of these shares except to the extent of her pecuniary interest therein.
/s/ Stephanie Athena Foglia06/12/2026
** Signature of Reporting PersonDate
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 activity did Mistras Group (MG) report in this Form 4?

Mistras Group reported an internal share transfer classified as a bona fide gift. A Grantor Retained Annuity Trust associated with ten percent owner Stephanie Athena Foglia gifted 411,875 common shares as an ordinary-course annuity payment, rather than executing an open-market stock sale.

How many Mistras Group (MG) shares were transferred by the GRAT?

The trust transferred 411,875 shares of Mistras Group common stock. This disposition was reported as a bona fide gift and described as an ordinary-course annuity payment made by the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos pursuant to its terms.

How many Mistras Group (MG) shares does the GRAT hold after the gift?

Following the gift, the GRAT held 4,310,811 Mistras Group common shares indirectly. The reporting person serves as trustee with sole voting and disposition power over these shares but disclaims beneficial ownership except to the extent of her pecuniary interest in the trust assets.

Did the Mistras Group (MG) Form 4 disclose any open-market stock sales or purchases?

No open-market stock sales or purchases were disclosed in this Form 4. The only reportable transaction was a bona fide gift of 411,875 shares by the GRAT as an annuity payment, alongside several entries updating indirect and direct share holdings.

What direct Mistras Group (MG) holdings were reported for the insider?

The filing shows 1,393,324 Mistras Group common shares held directly. It also lists multiple indirect holdings, including shares attributed to a spouse and children and a large position held through the Grantor Retained Annuity Trust for which the insider acts as trustee.

How does the insider control Mistras Group (MG) shares held by the GRAT?

The insider is trustee of the GRAT and controls voting and disposition. The Form 4 notes she holds sole power over the issuer’s common stock in the trust, while expressly disclaiming beneficial ownership except for her pecuniary interest in those trust-held shares.