Stephanie Athena Foglia - 10 Sep 2026 Form 4 Insider Report for Mistras Group, Inc. (MG)

Reporting relationship
10%+ Owner
Issuer ticker
MG
Reported as of
10 Sep 2026
Net transaction value
$0
Source evidence Original filing metadata and source links for verification. 4 source fields
SEC form
4
Accepted by SEC
14 Sep 2026, 21:29:18 UTC
Prior SEC filing
12 Jun 2026
Source filing
View source filing
Reporting owner 1 detail
Reporting owner signature
/s/ Stephanie Athena Foglia

Key filing fact

Stephanie Athena Foglia filed Form 4 for Mistras Group, Inc. (MG) on 14 Sep 2026.

Key facts

  • This page summarizes Stephanie Athena Foglia's Form 4 filing for Mistras Group, Inc. (MG).
  • 1 reported transaction and 0 derivative rows are listed below.
  • Accepted by SEC: 14 Sep 2026, 21:29.

Change

  • Previous filing in this sequence was filed on 12 Jun 2026.
  • Current net transaction value: $0.

Research use

  • This tells you what this filing adds before you inspect full transaction and derivative tables.
  • You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (2)

CIK 0002082289 Primary reporting owner

Foglia Stephanie Athena

Relationship
10%+ Owner
Address
195 CLARKKSVILLE ROAD, PRINCETON JUNCTION
Signature
/s/ Stephanie Athena Foglia
Signature date
14 Sep 2026
CIK 0002102046

2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos

Relationship
10%+ Owner
Address
C/O STEPHANIE FOGLIA, 504 HIRAM ROAD, PLYMOUTH MEETING
Signature
/s/ Stephanie Athena Foglia
Signature date
14 Sep 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MG transaction

Common Stock

Gift

Transaction value
Shares
-387,093
Change %
-9%
Price
$0.000000*
Shares after
3,923,718
Date
10 Sep 2026
Ownership
By GRAT
Footnotes
F1, F2
MG transaction

Common Stock

Gift

Transaction value
Shares
-387,093
Change %
-9%
Price
$0.000000*
Shares after
3,923,718
Date
10 Sep 2026
Ownership
By GRAT
Footnotes
F1, F2
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,393,324
Date
10 Sep 2026
Ownership
Direct
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,393,324
Date
10 Sep 2026
Ownership
Direct
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
15,366
Date
10 Sep 2026
Ownership
By Child
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
15,366
Date
10 Sep 2026
Ownership
By Child
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
52,547
Date
10 Sep 2026
Ownership
By GRAT
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
52,547
Date
10 Sep 2026
Ownership
By GRAT
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
20,106
Date
10 Sep 2026
Ownership
By Child
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
20,106
Date
10 Sep 2026
Ownership
By Child
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
20,466
Date
10 Sep 2026
Ownership
By Child
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
20,466
Date
10 Sep 2026
Ownership
By Child
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,692
Date
10 Sep 2026
Ownership
By Spouse
MG holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
1,692
Date
10 Sep 2026
Ownership
By Spouse
* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

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.

Footnote F2

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.

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