CUTLER ERIN 4

What Happened
Erin Cutler, Vice President, Human Resources at Minerals Technologies (MTX), converted a total of 2,471 deferred restricted stock units (DRSUs) into common shares on Jan 23 and Jan 26, 2026. Of those, 1,276 DRSUs vested/converted on Jan 23 and 1,195 on Jan 26. The company withheld 608 shares on Jan 23 at $68.77/share ($41,812) and 520 shares on Jan 26 at $68.89/share ($35,823) to satisfy tax withholding, for a total withholding of 1,128 shares (~$77,635). The derivative conversion entries are recorded at $0 (standard for conversion of awards).

Key Details

• Transaction types: M = exercise/conversion of derivative (DRSUs); F = shares withheld to pay tax liability.
• Dates and amounts:
  • 2026-01-23: converted 1,276 DRSUs (acquired 1,276 shares); 608 shares withheld at $68.77 (≈ $41,812).
  • 2026-01-26: converted 1,195 DRSUs (acquired 1,195 shares); 520 shares withheld at $68.89 (≈ $35,823).
• Net position change from these events: +1,343 shares (2,471 converted − 1,128 withheld).
• Footnotes: F1 — shares withheld to satisfy tax withholding; F3 — each DRSU equals one share; F4/F5 — DRSUs were granted in 2023 and 2024 and vest in three annual installments per the listed grant dates; F2 — report is based on Plan Statement as of Jan 21, 2026.
• Filing timeliness: Report filed 2026-01-27 for transactions on 1/23 and 1/26; the filing appears timely (no late filing indicated).

Context
DRSUs are deferred equity awards that convert to common shares when they vest. The withheld-share disposition is a routine net-settlement to cover withholding taxes and should not be read as an open-market sale of stock. The filing shows conversion of vested awards and tax-related withholding rather than a discretionary sale or purchase.