SANDERSON MATTHEW 4

What Happened
Matthew Sanderson, Executive Vice President of Tetra Technologies (TTI), had 86,034 restricted stock units (RSUs convert to common stock 1:1) vest on March 14, 2026. Those RSUs converted into 86,034 shares. To cover tax withholding, 38,157 of those shares were surrendered to the company at a price of $8.22 per share, totaling $313,651. The transaction is an award/vesting event with a portion surrendered for taxes rather than an open‑market sale.

Key Details

• Transaction date: March 14, 2026; Form 4 filed March 17, 2026 (reporting period 2026-03-14). The filing does not indicate lateness.
• Primary actions reported:
  • M (exercise/conversion of derivative): 86,034 shares acquired (RSU conversion) at $0.00 per share.
  • F (tax withholding): 38,157 shares surrendered/disposed at $8.22 per share for $313,651.
  • M (derivative disposition): same 86,034 share conversion also reflected as a derivative transaction in the filing.
• Shares owned after the transaction: not specified in this filing.
• Footnotes: F1–vested RSUs granted March 14, 2025 convert one‑for‑one; F2–units surrendered for tax withholding; F3–no remaining unvested portion of this award.

Context

• This was a routine RSU vesting event, not an open‑market purchase or sale by the insider. The only shares that changed hands were those withheld to satisfy tax obligations.
• For retail investors: withholding of shares at vesting is a common administrative step and does not necessarily indicate buying or selling sentiment by the insider.