Robert L. Clark - 18 Jun 2026 Form 4 Insider Report for MINERALS TECHNOLOGIES INC (MTX)

Reporting relationship: Director
Issuer ticker: MTX
Reported as of: 18 Jun 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 22 Jun 2026, 15:04:54 UTC
Prior SEC filing: 21 May 2026
Source filing: View source filing
Reporting owner signature: TIMOTHY JORDAN FOR ROBERT CLARK

Key filing fact

Robert L. Clark filed Form 4 for MINERALS TECHNOLOGIES INC (MTX) on 22 Jun 2026.

Key facts

This page summarizes Robert L. Clark's Form 4 filing for MINERALS TECHNOLOGIES INC (MTX).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 22 Jun 2026, 15:04.

Change

Previous filing in this sequence was filed on 21 May 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001479324 Primary reporting owner

CLARK ROBERT L

Relationship: Director
Address: 622 THIRD AVE.,, 38TH FLOOR, NEW YORK
Signature: TIMOTHY JORDAN FOR ROBERT CLARK
Signature date: 22 Jun 2026

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

MTX transaction Derivative

PHANTOM STOCK UNITS

Award

Transaction value
Shares: +51
Change %: +0.15%
Price: $0.000000^*
Shares after: 33,702
Date: 18 Jun 2026
Ownership: Direct
Underlying class: COMMON STOCK
Underlying amount: 51
Exercise price
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Each phantom stock unit is the economic equivalent of one share of Minerals Technologies Inc. Common Stock.

Footnote F2

The phantom stock units were accrued under the Minerals Technologies Inc. Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors and are to be settled in cash upon the reporting person's termination of service as a director.