MTX director granted 32.842 phantom stock units

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

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Form Type

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 32.842 phantom stock units tied to the company’s common stock. Each unit equals the value of one share but will be paid in cash, not stock, after his board service ends. Following this grant, he holds 21,563.469 phantom stock units.

Insider Trade Summary

Grant/Award: 32.842 shares

Grant/Award 1 txn

Insider Breunig Joseph C.

Role Director

Type	Security	Shares	Price	Value
Grant/Award	PHANTOM STOCK UNITS	32.842	$0.00	$0.00

Holdings After Transaction: PHANTOM STOCK UNITS — 21,563.469 contracts (Direct)

Footnotes (2)

F1. Each phantom stock unit is the economic equivalent of one share of Minerals Technologies Inc. Common Stock.
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: 32.842 units Total phantom units after grant: 21,563.469 units Transaction price per unit: $0.0000 per unit +1 more

4 metrics

Phantom stock units granted 32.842 units Award on June 18, 2026 to director Joseph C. Breunig

Total phantom units after grant 21,563.469 units Director’s phantom stock unit balance following the transaction

Transaction price per unit $0.0000 per unit Recorded grant price for phantom stock units

Underlying security shares 32.842 shares Number of MTX common stock-equivalent shares referenced by the units

Key Terms

PHANTOM STOCK UNITS, Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors, economic equivalent of one share, settled in cash

4 terms

PHANTOM STOCK UNITS financial

"security_title: PHANTOM STOCK UNITS"

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

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

settled in cash financial

"are to be settled in cash upon the reporting person's termination of service as a director."

FAQ

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

What insider transaction did Minerals Technologies (MTX) report for Joseph C. Breunig?

Minerals Technologies reported that director Joseph C. Breunig received 32.842 phantom stock units as a grant. These units track the value of MTX common stock and increase his deferred, cash-settled compensation balance rather than reflecting a market purchase or sale.

What are phantom stock units in the Minerals Technologies (MTX) Form 4?

Phantom stock units are bookkeeping entries that mirror the value of one share of MTX common stock each. They do not provide actual shares but represent deferred compensation that will be settled in cash based on the share value at payout.

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

After the June 18, 2026 grant, Joseph C. Breunig holds 21,563.469 phantom stock units. This total includes the newly awarded 32.842 units and represents his accumulated, cash-settled deferred compensation linked to Minerals Technologies’ common stock value.

Under what plan were the new MTX phantom stock units granted to Joseph C. Breunig?

The phantom stock units were accrued under the Minerals Technologies Inc. Non-Funded Deferred Compensation and Unit Award Plan for Non-Employee Directors. This plan provides cash-settled, stock-value-based units as part of compensation for outside board members.

How and when will Joseph C. Breunig’s MTX phantom stock units be settled?

Joseph C. Breunig’s phantom stock units will be settled in cash upon his termination of service as a director. The cash amount will be based on the economic value equivalent to MTX common stock at the time of settlement, rather than delivering shares.

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Accepted by SEC EDGAR 06/22/2026 - 03:02 PM

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

10017

(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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
PHANTOM STOCK UNITS	⁽¹⁾	06/18/2026		A		32.842		⁽²⁾	⁽²⁾	COMMON STOCK	32.842	$0	21,563.469	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	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)

Source: View Original Filing on SEC EDGAR