Minerals Technologies (MTX) Group President reports option exercise and stock sale

Rhea-AI Filing Summary

Minerals Technologies Inc. officer reports stock option exercise and sale. A Group President of Minerals Technologies Inc. exercised employee stock options to buy 23,093 shares of common stock at an exercise price of $38.285 per share on 12/29/2025. On the same date, the insider sold 23,093 shares of common stock at a weighted average price of $61.9029, with trades ranging between $62.240 and $61.585. Following these transactions, the reporting person directly owns 84,349 shares of Minerals Technologies common stock and indirectly holds an additional 772.865 shares through a 401(k) plan. The options exercised were part of an employee stock option grant that vested in three equal annual installments beginning January 19, 2017.

Insider Trade Summary

Exercise and Sale: 23,093 shares ($545K approx. pre-tax spread)

Exercise and Sale 4 txns

Insider MONAGLE DJ III

Role Group President

Sold 23,093 shs ($1.43M)

Approx. gross sale proceeds $1.43M

Approx. exercise cost $884K

Approx. pre-tax spread $545K

Type	Security	Shares	Price	Value
Exercise	EMPLOYEE Stock Option (Right to Buy)	23,093	$0.00	$0.00
Exercise	Common Stock	23,093	$38.285	$884K
Sale	Common Stock	23,093	$61.9029	$1.43M
holding	Common Stock	--	--	--

Holdings After Transaction: EMPLOYEE Stock Option (Right to Buy) — 0 shares (Direct); Common Stock — 84,349 shares (Direct); Common Stock — 772.865 shares (Indirect, By 401(k))

Footnotes (3)

1. F1. Weighted average price representing high of $62.240 and low of $61.585.
2. F2. The information contained in this report is based on a Plan Statement dated as of December 29, 2025.
3. F3. The options vested in three equal annual installments beginning on January 19, 2017.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 12/31/2025 - 11:34 AM Learn about SEC filing dates

FAQ

What insider transaction did Minerals Technologies Inc (MTX) report in this Form 4?

A Group President of Minerals Technologies Inc. (MTX) reported exercising employee stock options to acquire 23,093 shares of common stock at $38.285 per share and selling 23,093 shares of common stock at a weighted average price of $61.9029 on 12/29/2025.

What prices were involved in the MTX insider's stock option exercise and sale?

The insider exercised employee stock options at an exercise price of $38.285 per share and sold the same number of shares at a weighted average price of $61.9029 per share, with individual sale prices ranging from $61.585 to $62.240.

How many MTX shares does the reporting person own after these transactions?

After the reported transactions, the insider directly owns 84,349 shares of Minerals Technologies common stock and indirectly owns 772.865 shares through a 401(k) plan.

What role does the reporting person hold at Minerals Technologies Inc (MTX)?

The reporting person is an Officer of Minerals Technologies Inc. and serves as a Group President.

When did the MTX employee stock options involved in this Form 4 vest and expire?

The employee stock options exercised on 12/29/2025 vested in three equal annual installments beginning on January 19, 2017, and carried an expiration date of January 19, 2026.

Was the MTX insider transaction executed under a Rule 10b5-1 trading plan?

The form includes a checkbox to indicate whether a transaction was made pursuant to a Rule 10b5-1(c) trading plan. The excerpt does not show that this box was marked as checked for the reported transaction.

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^*

MONAGLE DJ III

(Last) (First) (Middle)

622 THIRD AVENUE

(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)

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

3. Date of Earliest Transaction (Month/Day/Year)
12/29/2025

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
Common Stock	12/29/2025		M		23,093	A	$38.285	107,442	D
Common Stock	12/29/2025		S		23,093	D	$61.9029(1)	84,349	D
Common Stock								772.865	I	By 401(k)(2)

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
EMPLOYEE Stock Option (Right to Buy)	$38.285	12/29/2025		M			23,093	(3)	01/19/2026	Common Stock	23,093	$0	0	D

Explanation of Responses:

1. Weighted average price representing high of $62.240 and low of $61.585.

2. The information contained in this report is based on a Plan Statement dated as of December 29, 2025.

3. The options vested in three equal annual installments beginning on January 19, 2017.

	/s/ Timothy Jordan for DJ Monagle III	12/31/2025
	** 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.