Atmus SVP reports tax-withholding share disposals

Atmus Filtration Technologies Inc. Senior Vice President Charles Masters reported share dispositions tied to equity awards.

Rhea-AI Filing Summary

Atmus Filtration Technologies Inc. Senior Vice President Charles Masters reported share dispositions tied to equity awards. On February 27, 2026, the company withheld 9,046 shares of common stock at $64.53 per share upon vesting of performance share units to cover his tax withholding obligation. On the same date, the company also withheld 2,131 shares at $64.53 per share upon vesting of restricted share units for the same purpose. After these tax-withholding dispositions, Masters held 42,339 shares of Atmus common stock directly.

Insider Trade Summary

Exercise Price or Tax Liability: 11,177 shares

Exercise Price or Tax Liability 2 txns

Insider Masters Charles

Role Senior Vice President

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	9,046	$64.53	$584K
Exercise Price or Tax Liability	Common Stock	2,131	$64.53	$138K

Holdings After Transaction: Common Stock — 42,339 shares (Direct)

Footnotes (2)

1. F1. Reflects shares withheld upon vesting of Performance Share Units earned during the 2023-2025 grant cycle to pay reporting person's tax withholding obligation.
2. F2. Reflects shares withheld upon vesting of the Restricted Share Units granted during the 2023-2025 grant cycle to pay reporting person's tax withholding obligation.

FAQ

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

What insider transaction did Atmus (ATMU) report for Charles Masters?

Atmus (ATMU) reported that Senior Vice President Charles Masters had common shares withheld to cover taxes on vested equity awards. The Form 4 shows tax-withholding dispositions related to performance share units and restricted share units that vested for the 2023–2025 grant cycle.

How many Atmus (ATMU) shares were disposed of for tax withholding?

A total of 11,177 Atmus (ATMU) common shares were disposed of for tax withholding. This includes 9,046 shares tied to performance share units and 2,131 shares tied to restricted share units, all withheld by the company to satisfy income tax obligations.

At what price were the Atmus (ATMU) tax-withholding shares valued?

The withheld Atmus (ATMU) shares were valued at $64.53 per share. Both the 9,046 shares related to performance share units and the 2,131 shares related to restricted share units used this same per-share value for calculating the tax-withholding disposition.

Does the Atmus (ATMU) Form 4 show an open-market sale by Charles Masters?

The Atmus (ATMU) Form 4 does not show an open-market sale. It reports code “F” transactions, which are shares withheld by the company to pay the reporting person’s tax withholding obligations upon vesting of performance and restricted share unit awards.

How many Atmus (ATMU) shares does Charles Masters own after these transactions?

Following the reported tax-withholding dispositions, Charles Masters directly owns 42,339 Atmus (ATMU) common shares. This figure reflects his remaining direct holdings after shares were withheld upon vesting of his 2023–2025 performance and restricted share unit grants.

What do the footnotes in the Atmus (ATMU) Form 4 explain?

The footnotes explain that the transactions reflect shares withheld upon vesting of performance share units and restricted share units from the 2023–2025 grant cycle. These shares were used solely to satisfy Charles Masters’ tax withholding obligations, not as discretionary market sales.

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

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Accepted by SEC EDGAR 03/03/2026 - 02:08 PM 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^*

Masters Charles

(Last) (First) (Middle)

26 CENTURY BOULEVARD

(Street)

NASHVILLE TN 37214

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Atmus Filtration Technologies Inc. [ ATMU ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/27/2026

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(1)	02/27/2026		F		9,046	D	$64.53	44,470	D
Common Stock(2)	02/27/2026		F		2,131	D	$64.53	42,339	D

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

Explanation of Responses:

1. Reflects shares withheld upon vesting of Performance Share Units earned during the 2023-2025 grant cycle to pay reporting person's tax withholding obligation.

2. Reflects shares withheld upon vesting of the Restricted Share Units granted during the 2023-2025 grant cycle to pay reporting person's tax withholding obligation.

Remarks:

	/s/Tiffany B. Williams, Attorney-in-Fact for Charles Masters	03/03/2026
	** 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.