Stamatakis Manuel N. 4

What Happened
Manuel N. Stamatakis, Executive Chairman and Director of Mistras Group, had 814 shares disposed (withheld) to satisfy a tax liability on March 4, 2026. The shares were valued at $15.68 each, for a total of $12,764. This was a tax-withholding disposition (transaction code F), not an open‑market sale or purchase.

Key Details

• Transaction date: 2026-03-04; Filing date (Form 4): 2026-03-10 (filed six days after the transaction).
• Price used for withholding: $15.68 per share; total value: $12,764.
• Shares owned after transaction: not specified in the filing.
• Footnote: F1 — “Represents an award of restricted stock units that will vest 100% on the first anniversary date of the grant.”
• Transaction type: F = payment of exercise price or tax liability (share withholding).

Context
Withholding shares to cover taxes is a routine administrative action tied to equity awards (here, restricted stock units). It generally does not indicate a change in the insider’s market view because the shares are retained by the company to satisfy tax obligations rather than sold on the open market. Note the Form 4 appears to have been filed later than the standard 2-business-day deadline.