Breunig Joseph C. 4

What Happened
Joseph C. Breunig, a non‑employee director of Minerals Technologies Inc. (MTX), was granted 32.842 phantom stock units (derivative awards) on June 18, 2026. The units were granted at $0.00 per unit (no cash paid at grant). The award is a deferred, cash‑settled benefit that is the economic equivalent of 32.842 shares.

Key Details

• Transaction date: 2026-06-18 (reported on Form 4 filed 2026-06-22).
• Transaction type/code: Award/Grant (A); derivative phantom stock units.
• Units granted: 32.842; grant price reported $0.00.
• Footnotes: Each phantom unit equals one share of MTX common stock (F1). Units were accrued under the Non‑Funded Deferred Compensation and Unit Award Plan for Non‑Employee Directors and will be settled in cash when the director’s service ends (F2).
• Shares owned after transaction: Not specified in this filing.
• Timeliness: Form 4 filed within the required reporting window (timely).

Context
This is a routine director compensation award (cash‑settled deferred units), not a market purchase or sale of shares. Because the units are settled in cash rather than issuing stock, this grant does not dilute outstanding shares and does not necessarily indicate buy/sell intent.