Minerals Technologies director granted phantom stock units

Breunig Joseph C. reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

Breunig Joseph C. reported acquisition or exercise transactions in this Form 4 filing.

MINERALS TECHNOLOGIES INC director Joseph C. Breunig received a grant of 34.890 phantom stock units on March 6, 2026. Each unit is the economic equivalent of one share of common stock and will be settled in cash under the company’s deferred compensation and unit award plan for non-employee directors when his board service ends. Following this award, he holds a total of 19,622.481 phantom stock units directly.

Insider Trade Summary

Grant/Award: 34.89 shares

Grant/Award 1 txn

Insider Breunig Joseph C.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	PHANTOM STOCK UNITS	34.89	$0.00	$0.00

Holdings After Transaction: PHANTOM STOCK UNITS — 19,622.481 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.

FAQ

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What did Minerals Technologies (MTX) report in Joseph C. Breunig’s latest Form 4?

Minerals Technologies reported that director Joseph C. Breunig received a grant of 34.890 phantom stock units on March 6, 2026. These units mirror the value of common shares but are settled in cash under the company’s non-employee director deferred compensation and unit award plan.

How many phantom stock units does Joseph C. Breunig hold after this MTX transaction?

After the March 6, 2026 award, Joseph C. Breunig holds 19,622.481 phantom stock units. This total reflects his direct holdings of cash-settled units that track Minerals Technologies common stock value under the non-funded deferred compensation and unit award plan for non-employee directors.

Are Joseph C. Breunig’s Minerals Technologies phantom stock units actual MTX shares?

The phantom stock units are not actual shares but are economically equivalent to one share of Minerals Technologies common stock each. They are bookkeeping entries that follow the share price and will be paid out in cash instead of stock when his board service ends.

When will Joseph C. Breunig’s MTX phantom stock units be settled?

The phantom stock units will be settled in cash upon Joseph C. Breunig’s termination of service as a director. They were accrued under Minerals Technologies’ Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors, which governs timing and cash settlement mechanics for these awards.

Is Joseph C. Breunig’s March 2026 Form 4 for MTX an open-market stock trade?

No, the Form 4 records a compensation-related grant of 34.890 phantom stock units, not an open-market stock trade. The units were accrued under the company’s non-employee director deferred compensation and unit award plan and will be settled in cash rather than through market purchases or sales.

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

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Accepted by SEC EDGAR 03/10/2026 - 04:25 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^*

Breunig Joseph C.

(Last) (First) (Middle)

622 THIRD AVENUE

38TH FLOOR

(Street)

NEW YORK NY 10017

(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)
03/06/2026

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)	03/06/2026		A		34.89		(2)	(2)	COMMON STOCK	34.89	$0	19,622.481	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 JOSEPH C. BREUNIG	03/10/2026
	** 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.