Minerals Technologies (MTX) director reports new phantom stock unit grant

Rhea-AI Filing Summary

Minerals Technologies Inc. (MTX) reported a routine insider compensation update for a non-employee director. On 12/04/2025, the reporting person acquired 64.72 phantom stock units tied to Minerals Technologies common stock. Each phantom unit is the economic equivalent of one share of common stock but is settled in cash rather than stock.

The phantom stock units were granted under the company’s Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors and will be paid out in cash when the director’s board service ends. Following this transaction, the director beneficially owns 31,685.804 phantom stock units in a direct ownership capacity.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider CLARK ROBERT L

Role Director

Type	Security	Shares	Price	Value
Grant/Award	PHANTOM STOCK UNITS	64.72	$0.00	--

Holdings After Transaction: PHANTOM STOCK UNITS — 31,685.804 shares (Direct)

Footnotes (1)

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

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

CLARK ROBERT L

(Last) (First) (Middle)

622 THIRD AVE.,

38TH FLOOR

(Street)

NEW YORK NY 10017-6707

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
MINERALS TECHNOLOGIES INC [ MTX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
12/04/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
PHANTOM STOCK UNITS	(1)	12/04/2025		A		64.72		(2)	(2)	COMMON STOCK	64.72	$0	31,685.804	D

Explanation of Responses:

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

2. 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.

	TIMOTHY JORDAN FOR ROBERT CLARK	12/08/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did the Minerals Technologies (MTX) director report on this Form 4?

The director reported acquiring 64.72 phantom stock units linked to Minerals Technologies Inc. common stock on 12/04/2025 as part of director compensation.

How many phantom stock units does the MTX director own after this transaction?

After the reported transaction, the director beneficially owns 31,685.804 phantom stock units in direct ownership.

What is a phantom stock unit in the context of Minerals Technologies (MTX)?

Each phantom stock unit is the economic equivalent of one share of Minerals Technologies Inc. common stock but is designed to be settled in cash rather than actual shares.

Under what plan were the Minerals Technologies (MTX) phantom stock units granted?

The phantom stock units were accrued under the Minerals Technologies Inc. Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors.

When will the MTX director receive cash for these phantom stock units?

The phantom stock units are scheduled to be settled in cash upon the reporting person’s termination of service as a director.

Is this MTX Form 4 filed by one or multiple reporting persons?

This Form 4 is indicated as being filed by one reporting person, who serves as a director of Minerals Technologies Inc.