Minerals Technologies (NYSE: MTX) executive exercises DRSUs, covers taxes

Rhea-AI Filing Summary

Minerals Technologies Inc. Group President Brett Argirakis reported multiple equity-related transactions in company stock. On January 23, 2026, deferred restricted stock units (DRSUs) representing 3,247 shares of common stock were converted at $0 per share, and the company withheld 1,413 shares at $68.77 to satisfy tax obligations, leaving 31,091 directly held shares. On January 26, 2026, a further 2,672 DRSUs converted at $0 per share, with 1,163 shares withheld at $68.89 for taxes, resulting in 32,600 directly held shares.

In addition, Argirakis holds 2,850.7 shares of common stock indirectly through a 401(k) plan as of a plan statement dated January 21, 2026. Each DRSU is the economic equivalent of one share of Minerals Technologies common stock and reflects prior grants that vest in three equal annual installments.

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

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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^*

ARGIRAKIS BRETT

(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)
01/23/2026

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
Common Stock	01/23/2026		M		3,247	A	$0	32,504	D
Common Stock	01/23/2026		F		1,413(1)	D	$68.77	31,091	D
Common Stock	01/26/2026		M		2,672	A	$0	33,763	D
Common Stock	01/26/2026		F		1,163(1)	D	$68.89	32,600	D
Common Stock								2,850.7	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
Deferred Restricted Stock Units (DRSUs)	(3)	01/23/2026		M			3,247	(4)	(4)	Common Stock	3,247	$0	24,244	D
Deferred Restricted Stock Units (DRSUs)	(3)	01/26/2026		M			2,672	(5)	(5)	Common Stock	2,672	$0	21,572	D

Explanation of Responses:

1. These shares were withheld by Minerals Technologies Inc. to satisfy tax withholding obligations.

2. The information contained in this report is based on a Plan Statement as of January 21, 2026.

3. Each DRSU is the economic equivalent of one share of Minerals Technologies Inc. Common Stock.

4. The DRSUs were granted on January 23, 2024 and vest in three equal annual installments beginning on January 23, 2025.

5. The DRSUs were granted on January 24, 2023 and vest in three equal annual installments beginning on January 24, 2024.

	/s/ Timothy J. Jordan for Brett Argirakis	01/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did MTX executive Brett Argirakis report?

Group President Brett Argirakis reported the conversion of deferred restricted stock units (DRSUs) into common stock on January 23, 2026 and January 26, 2026, along with related share withholdings for taxes.

How many Minerals Technologies (MTX) DRSUs did Argirakis convert?

Argirakis converted 3,247 DRSUs into common stock on January 23, 2026 and 2,672 DRSUs on January 26, 2026, each at an exercise price of $0 per unit.

Were any Minerals Technologies (MTX) shares sold for cash in this Form 4?

The Form 4 shows shares of common stock withheld by Minerals Technologies to cover tax withholding obligations at $68.77 and $68.89 per share, rather than open-market sales by Argirakis.

How many MTX shares does Brett Argirakis hold after these transactions?

After the reported transactions, Argirakis holds 32,600 shares of Minerals Technologies common stock directly and 2,850.7 shares indirectly through a 401(k) plan, based on a plan statement as of January 21, 2026.

What are Minerals Technologies (MTX) Deferred Restricted Stock Units (DRSUs)?

Each DRSU is the economic equivalent of one share of Minerals Technologies common stock. The disclosed DRSU grants vest in three equal annual installments starting in January 2024 and January 2025, respectively.

What was the purpose of the MTX share withholdings noted in the Form 4?

The filing states that certain shares of common stock were withheld by Minerals Technologies Inc. to satisfy tax withholding obligations arising from the DRSU conversions.