STOCK TITAN

Large Mistras Group (MG) shareholder files Form 3 listing direct and GRAT holdings

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Mistras Group, Inc. insider Stephanie Athena Foglia filed an initial ownership report as a ten percent owner of the company’s common stock. The filing shows direct ownership of 1,393,324 common shares and additional indirect holdings through several grantor retained annuity trusts (GRATs), as well as shares held by her spouse and children. Foglia is trustee for a 2025 irrevocable two-year GRAT and holds sole voting and disposition power over the issuer’s common stock in that trust, while disclaiming beneficial ownership of those GRAT shares except to the extent of her pecuniary interest.

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Insider Foglia Stephanie Athena
Role null
Type Security Shares Price Value
holding Common Stock -- -- --
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 — 1,393,324 shares (Direct, null); Common Stock — 5,692 shares (Indirect, By Spouse)
Footnotes (1)
  1. [object Object]
Direct common shares 1,393,324 shares Directly owned common stock following Form 3 reporting
GRAT holding 1 5,251,358 shares Indirect common stock held by GRAT, trustee Stephanie Athena Foglia
Additional GRAT holding 54,008 shares Indirect common stock held by another GRAT
Child-held shares (example) 19,005 shares Indirect common stock reported as held by child
Spouse-held shares 5,692 shares Indirect common stock reported as held by spouse
Grantor Retained Annuity Trust financial
"The reporting person is the trustee for the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos ("GRAT")"
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.
GRAT financial
"holds sole power over the voting and disposition of the issuer's common stock held by the GRAT"
beneficial ownership financial
"The reporting person disclaims beneficial ownership of these shares except to the extent of her pecuniary interest therein."
Beneficial ownership means the person or entity that actually enjoys the benefits of owning shares or other assets — such as receiving dividends, voting rights, or price gains — even if the legal title is held in another name. For investors it matters because knowing who truly controls and profits from a company reveals who can influence decisions, exposes potential conflicts of interest or hidden concentration of power, and affects transparency and risk in the stock.
pecuniary interest financial
"disclaims beneficial ownership of these shares except to the extent of her pecuniary interest therein."
ten percent owner financial
"is_ten_percent_owner: 1"
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SEC Form 3
FORM 3UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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:3235-0104
Estimated average burden
hours per response:0.5
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. Date of Event Requiring Statement (Month/Day/Year)
12/31/2025
3. Issuer Name and Ticker or Trading Symbol
Mistras Group, Inc. [ MG ]
3a. Foreign Trading Symbol
5. If Amendment, Date of Original Filed (Month/Day/Year)
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
DirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock1,393,324D
Common Stock5,692IBy Spouse
Common Stock15,366IBy Child
Common Stock52,547IBy GRAT
Common Stock20,106IBy Child
Common Stock52,547IBy GRAT
Common Stock19,005IBy Child
Common Stock54,008IBy GRAT
Common Stock5,251,358IBy GRAT(1)
Table II - Derivative Securities Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4) 2. Date Exercisable and Expiration Date (Month/Day/Year)3. Title and Amount of Securities Underlying Derivative Security (Instr. 4) 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 6. Nature of Indirect Beneficial Ownership (Instr. 5)
Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
1. The reporting person is the trustee for the 2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos ("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 Foglia06/04/2026
** 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 5 (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 3: SEC 1473 (03-26)

FAQ

What does the Form 3 filing by Stephanie Athena Foglia for Mistras Group (MG) show?

The Form 3 shows Stephanie Athena Foglia as a ten percent owner of Mistras Group common stock, with significant direct holdings and additional indirect positions through GRATs, spouse, and children, establishing her baseline ownership before any future reportable transactions.

How many Mistras Group (MG) shares does Stephanie Athena Foglia hold directly?

Stephanie Athena Foglia holds 1,393,324 Mistras Group common shares directly. This direct position is separate from additional indirect holdings reported through GRATs, her spouse, and her children, and forms the core of her disclosed ownership stake in the company.

What Mistras Group (MG) shares are held through GRATs for Stephanie Athena Foglia?

The filing lists several indirect Mistras Group common stock positions held "By GRAT," including 5,251,358 shares in one trust and additional blocks of 54,008 and 52,547 shares, reflecting large trust-based holdings where Foglia is trustee with voting and disposition power.

What does the footnote about GRAT beneficial ownership mean for Mistras Group (MG)?

The footnote explains Foglia is trustee for a 2025 irrevocable two-year GRAT, with sole voting and disposition power over its Mistras Group shares. She disclaims beneficial ownership of those GRAT shares except for her pecuniary interest, clarifying economic exposure versus control.