Stephanie Athena Foglia - 31 Dec 2025 SCHEDULE 13D Report for Mistras Group, Inc. Common Stock, $0.01 par value (MG)

Filing Manager
Stephanie Athena Foglia
Reporting Manager
Stephanie Foglia
Security
Mistras Group, Inc. Common Stock, $0.01 par value
Symbol
MG
Shares outstanding
31,597,505 shares
Disclosed Ownership
6,862,978 shares
Ownership
22%
Form type
SCHEDULE 13D
Filing time
31 Mar 2026, 16:12:49 UTC
Date of event
31 Dec 2025
Previous filing
11 Sep 2025
SEC
View on sec.gov

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Quoteable Key Fact

"Stephanie Athena Foglia disclosed 22% ownership in Mistras Group, Inc. Common Stock, $0.01 par value (MG) on 31 Dec 2025."

Quick Takeaways

  • Stephanie Athena Foglia filed SCHEDULE 13D for Mistras Group, Inc. Common Stock, $0.01 par value (MG).
  • Disclosed ownership: 22%.
  • Date of event: 31 Dec 2025.

What Changed

  • Previous schedule filing date: 11 Sep 2025.
  • Current filing was accepted on 31 Mar 2026, 16:12.

Why This Matters

  • This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
  • You can verify ownership claims directly against the original SEC filing.

Official SEC Source

Backed by Schedule 13D/13G

Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.

See Original Filing

Reporting Managers (2)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Stephanie Foglia 22% 6,862,978 1,611,620 5,251,358 /s/ Stephanie Foglia Stephanie Foglia 0002082289
2025 Irrevocable Two-Year Grantor Retained Annuity Trust of Aspasia F. Vahaviolos 17% 5,251,358 0 5,251,358 /s/ Stephanie Foglia Stephanie Foglia/Trustee 0002102046

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