ALDAG ERIK 4

What Happened

• Erik Aldag, SVP Finance & Treasury (CFO) of Minerals Technologies Inc., had DRSUs convert to common stock on Jan 23 and Jan 26, 2026. A total of 4,084 shares were delivered (2,243 on Jan 23 and 1,841 on Jan 26). To satisfy tax withholding obligations, the company withheld 1,240 shares on Jan 23 (at $68.77/share, $85,275) and 1,019 shares on Jan 26 (at $68.89/share, $70,199), totaling 2,259 shares withheld and $155,474 in withholding value. Net shares retained by Aldag from these conversions: 1,825.

Key Details

• Transaction types: M = exercise/conversion of derivative (DRSUs); F = shares withheld to cover tax withholding.
• Dates & prices: Jan 23, 2026 (2,243 DRSUs converted; 1,240 shares withheld @ $68.77 = $85,275); Jan 26, 2026 (1,841 DRSUs converted; 1,019 shares withheld @ $68.89 = $70,199).
• Shares delivered/withheld: 4,084 shares delivered; 2,259 shares withheld; 1,825 shares retained.
• Footnotes: F1 — shares were withheld to satisfy tax withholding obligations; F2 — report based on Plan Statement dated Jan 21, 2026; F3 — each DRSU equals one share; F4/F5 — DRSUs were granted Jan 23, 2024 (vesting in 3 equal annual installments beginning Jan 23, 2025) and Jan 24, 2023 (vesting beginning Jan 24, 2024).
• Filing timeliness: Report filed Jan 27, 2026 for transactions on Jan 23 and Jan 26; appears to be timely.

Context

• These were DRSU conversions with shares withheld for taxes (a common, routine cashless-withholding action), not open-market sales. Such withholding is standard when restricted units vest and does not by itself indicate a deliberate sell decision by the insider. Purchases or open-market sales usually carry more directional signal for investors.