MTX director granted phantom stock units

ROBINSON MARC E reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

ROBINSON MARC E reported acquisition or exercise transactions in this Form 4 filing.

Minerals Technologies Inc. director Marc E. Robinson received a grant of 40.992 phantom stock units, each economically equivalent to one share of common stock. These units were awarded under the company’s Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors and will be settled in cash when his board service ends. Following this award, Robinson holds a total of 26,914.581 phantom stock units.

Insider Trade Summary

Grant/Award: 40.992 shares

Grant/Award 1 txn

Insider ROBINSON MARC E

Role Director

Type	Security	Shares	Price	Value
Grant/Award	PHANTOM STOCK UNITS	40.992	$0.00	$0.00

Holdings After Transaction: PHANTOM STOCK UNITS — 26,914.581 contracts (Direct)

Footnotes (2)

1. F1. Each phantom stock unit is the economic equivalent of one share of Minerals Technologies Inc. Common Stock.
2. 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.

Key Figures

Phantom stock units granted: 40.992 units Total phantom units after grant: 26,914.581 units Economic equivalence: 1 unit = 1 MTX share

3 metrics

Phantom stock units granted 40.992 units Grant to director Marc E. Robinson on June 18, 2026

Total phantom units after grant 26,914.581 units Holdings following reported transaction

Economic equivalence 1 unit = 1 MTX share Each phantom stock unit equals one common share in value

Key Terms

PHANTOM STOCK UNITS, Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors, economic equivalent

3 terms

PHANTOM STOCK UNITS financial

"Each phantom stock unit is the economic equivalent of one share"

Phantom stock units are company promises that pay a cash or stock-equivalent award tied to the firm’s share price or value growth, but they do not issue actual shares. Think of them as a bonus check that moves with the stock like a mirror rather than handing over an ownership slice. Investors care because these awards can affect a company’s future cash obligations, executive incentives and reported expenses without causing share dilution.

Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors financial

"accrued under the Minerals Technologies Inc. Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors"

economic equivalent financial

"Each phantom stock unit is the economic equivalent of one share"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did MTX director Marc E. Robinson report?

Marc E. Robinson reported receiving 40.992 phantom stock units as a grant. These units are part of his non-employee director compensation and are economically tied to Minerals Technologies Inc. common stock, but are settled in cash at the end of his board service.

What are phantom stock units in the Minerals Technologies (MTX) filing?

Phantom stock units are cash-settled awards whose value tracks common stock. In this case, each unit is the economic equivalent of one MTX share, but the director receives cash, not shares, upon termination of board service under the specified plan.

How many phantom stock units does Marc E. Robinson hold after this MTX grant?

After the 40.992-unit grant, Marc E. Robinson holds 26,914.581 phantom stock units. This total reflects his accumulated director compensation under the company’s Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors, all to be settled in cash later.

Does the MTX Form 4 show an open-market buy or sell of stock?

No, the Form 4 shows a compensation grant, not an open-market trade. Robinson acquired 40.992 phantom stock units with a zero exercise price, awarded under a deferred compensation plan and settled in cash rather than through purchasing or selling MTX shares on the market.

When will the MTX phantom stock units reported by Marc E. Robinson be settled?

The phantom stock units will be settled in cash upon Robinson’s termination of service as a director. Until then, they function as deferred compensation whose value mirrors MTX common stock performance, as defined in the company’s non-funded deferred compensation and unit award plan.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 06/22/2026 - 03:12 PM EDT Learn about SEC filing dates

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^*

ROBINSON MARC E

(Last) (First) (Middle)

622 THIRD AVE.

38TH FLOOR

(Street)

NEW YORK NEW YORK 10017-6707

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2026

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

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

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

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)	06/18/2026		A		40.992		(2)	(2)	COMMON STOCK	40.992	$0	26,914.581	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 MARC ROBINSON	06/22/2026
	** 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.
* Form 4: SEC 1474 (03-26)