Minerals Technologies (NYSE: MTX) CEO settles DRSUs, withholds shares for tax

Rhea-AI Filing Summary

Minerals Technologies Inc. (MTX) chairman and CEO Douglas Dietrich reported the vesting and settlement of deferred restricted stock units (DRSUs) into common stock and related tax withholding. On January 23, 2026, 11,016 DRSUs converted into 11,016 shares of common stock at $0 per share, and the company withheld 6,092 shares to satisfy tax obligations at $68.77 per share. On January 26, 2026, a further 11,123 DRSUs converted into 11,123 shares, with 6,152 shares withheld for taxes at $68.89 per share. After these transactions, Dietrich directly held 175,973 shares of common stock, 70,081 DRSUs, and 4,562.677 shares indirectly through a 401(k) plan.

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^*

DIETRICH DOUGLAS T

(Last) (First) (Middle)

622 THIRD AVENUE

(Street)

NEW YORK NY 10017-6707

(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
X	Officer (give title below)		Other (specify below)
	CHAIRMAN AND CEO

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		11,016	A	$0	177,094	D
Common Stock	01/23/2026		F		6,092(1)	D	$68.77	171,002	D
Common Stock	01/26/2026		M		11,123	A	$0	182,125	D
Common Stock	01/26/2026		F		6,152(1)	D	$68.89	175,973	D
Common Stock								4,562.677	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			11,016	(4)	(4)	Common Stock	11,016	$0	81,204	D
Deferred Restricted Stock Units (DRSUs)	(3)	01/26/2026		M			11,123	(5)	(5)	Common Stock	11,123	$0	70,081	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 Douglas Dietrich	01/27/2026
	** 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.

FAQ

What insider transactions did MTX CEO Douglas Dietrich report on this Form 4?

Douglas Dietrich reported the conversion of 22,139 Deferred Restricted Stock Units (DRSUs) into the same number of Minerals Technologies common shares on January 23 and 26, 2026, along with shares withheld to cover tax obligations.

How many Minerals Technologies (MTX) shares were withheld for taxes in this Form 4?

Minerals Technologies withheld 6,092 shares on January 23, 2026, and 6,152 shares on January 26, 2026, to satisfy tax withholding obligations related to the DRSU vesting.

How many MTX shares does Douglas Dietrich own after these transactions?

Following the reported transactions, Douglas Dietrich directly owned 175,973 shares of Minerals Technologies common stock and indirectly held 4,562.677 shares through a 401(k) plan.

What are DRSUs in the context of Minerals Technologies (MTX) insider filings?

At Minerals Technologies, each Deferred Restricted Stock Unit (DRSU) is the economic equivalent of one share of common stock and converts into shares as it vests according to the grant schedule.

When were the DRSUs that vested in January 2026 originally granted to the MTX CEO?

The DRSUs converting on January 23, 2026 were granted on January 23, 2024, while the DRSUs converting on January 26, 2026 were granted on January 24, 2023, each vesting in three equal annual installments.

Does Douglas Dietrich still hold unvested or deferred equity in MTX after these transactions?

Yes. After the January 2026 conversions, he continued to hold 70,081 DRSUs, representing additional deferred equity tied to Minerals Technologies common stock.