CLARK ROBERT L 4

What Happened Robert L. Clark, a non-employee director of Minerals Technologies Inc. (MTX), was granted 56.439 phantom stock units (reported as a derivative award) on 2026-03-06. The filing shows an acquisition (code A) of 56.439 units at $0.00 (no cash price reported); these are economic equivalents of common shares and will be settled in cash. This is a compensation award for board service rather than an open-market purchase or sale.

Key Details

• Transaction date and type: 2026-03-06 — Grant/Award (Form 4 code A) of 56.439 phantom stock units at $0.00.
• Reported value: $0.00 reported on the Form 4 (units are deferred, cash‑settled later).
• Shares owned following transaction: Not specified in the filing.
• Footnotes:
  • Each phantom stock unit equals the economic value of one share of MTX common stock (F1).
  • Units were granted under the Non‑Funded Deferred Compensation and Unit Award Plan for Non‑Employee Directors and will be paid in cash upon the director’s termination of service (F2).
• Filing timeliness: Report filed 2026-03-10 for a 2026-03-06 transaction; this appears to meet the two-business-day Form 4 deadline (timely).

Context These phantom units are deferred compensation for a non-employee director and are cash‑settled rather than resulting in immediate share ownership. Such awards are routine director compensation and do not directly indicate the director is buying or selling company stock on the open market.