CUTLER ERIN 4

What Happened Erin Cutler, VP of Human Resources at Minerals Technologies (MTX), had 1,193 Deferred Restricted Stock Units (DRSUs) convert into common shares on January 21, 2026. The conversion was recorded at $0.00 exercise price (DRSUs → 1,193 shares). To cover tax withholding obligations, 583 of those shares were surrendered/withheld at $66.92 each for a withholding value of $39,014, leaving a net 610 shares delivered to Cutler (net value ≈ $40,821 based on $66.92).

Key Details

• Transaction date: January 21, 2026. Filing date: January 23, 2026 (filed within the typical two-business-day Form 4 window).
• Conversion/Exercise: 1,193 DRSUs → 1,193 shares (exercise/conversion code M) at $0.00 exercise price.
• Tax withholding: 583 shares withheld (code F) at $66.92 per share, $39,014 total.
• Net shares retained: 610 shares (1,193 − 583); net value ≈ $40,821 using $66.92.
• Shares owned after transaction: not specified in the provided filing excerpt.
• Relevant footnotes: F1 confirms shares were withheld to satisfy tax withholding; F2 notes this is based on a Plan Statement dated Jan 21, 2026; F3 clarifies each DRSU equals one share; F4 states the DRSUs were granted Jan 21, 2025 and vest in three equal annual installments starting Jan 21, 2026.
• Transaction codes: M = exercise/conversion of derivative (DRSU); F = tax withholding (not an open-market sale).

Context This was a routine vesting/conversion of DRSUs (first annual installment from a Jan 21, 2025 grant) rather than an open-market sale or purchase. The withholding of shares to cover taxes is a common administrative step (similar to a cashless exercise) and does not by itself signal a change in insider confidence. No late filing indication appears in the report.