Atmus CPO sells 3,870 shares at $50.893 avg

Atmus Filtration Technologies Inc. (ATMU) reported that Chief People Officer Renee Swan sold 3,870 shares of common stock on 2026-08-17 at an average price of $50.893 per share.

Rhea-AI Filing Summary

Atmus Filtration Technologies Inc. (ATMU) reported that Chief People Officer Renee Swan sold 3,870 shares of common stock on 2026-08-17 at an average price of $50.893 per share. According to the disclosure, these shares were sold upon vesting of the final portion of an August 14, 2023 Restricted Stock Unit award to pay Swan’s tax withholding obligation. Following this transaction, Swan directly holds 46,875 shares of Atmus common stock.

Insider Trade Summary

Net Seller: 3,870 shares

Net Sell 1 txn

Insider Swan Renee

Role Chief People Officer

Sold 3,870 shs ($197K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	3,870	$50.893	$197K

Holdings After Transaction: Common Stock — 46,875 shares (Direct)

Footnotes (2)

1. F1. Reflects shares sold upon vesting of final portion of August 14, 2023 Restricted Stock Unit Award to pay reporting person's tax withholding obligation.
2. F2. Reflects the average price of shares sold.

Key Figures

Shares sold: 3,870 shares Average sale price: $50.893 per share Shares owned after transaction: 46,875 shares +1 more

4 metrics

Shares sold 3,870 shares Common Stock sold by Chief People Officer on 2026-08-17

Average sale price $50.893 per share Average price of shares sold in the 2026-08-17 transaction

Shares owned after transaction 46,875 shares Direct holdings of Renee Swan following the reported sale

Net shares sold reported 3,870 shares Net sell shares across all reported transactions in this Form 4

Key Terms

Restricted Stock Unit, tax withholding obligation, average price

3 terms

Restricted Stock Unit financial

"final portion of August 14, 2023 Restricted Stock Unit Award"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

tax withholding obligation financial

"sold upon vesting ... to pay reporting person's tax withholding obligation"

average price financial

"Reflects the average price of shares sold"

FAQ

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

What insider transaction did ATMU report for Chief People Officer Renee Swan?

Atmus Filtration Technologies Inc. reported that Renee Swan sold 3,870 shares of common stock on 2026-08-17. The sale occurred upon RSU vesting and was used to satisfy her tax withholding obligation.

At what price were the ATMU shares sold in Renee Swan’s Form 4 filing?

The reported sale price was an average of $50.893 per share. A footnote explains this figure reflects the average price of shares sold, rather than individual trade prices for each share block.

How many ATMU shares does Renee Swan hold after this reported sale?

After the transaction, Renee Swan directly holds 46,875 shares of Atmus common stock. This figure represents her direct ownership position following the 3,870 shares sold for tax withholding.

Why did Renee Swan sell ATMU shares according to the Form 4 footnotes?

The filing states the 3,870 shares were sold to pay her tax withholding obligation upon vesting of the final portion of an August 14, 2023 Restricted Stock Unit award, indicating a tax-related rather than discretionary sale.

Was Renee Swan’s ATMU share sale under a Rule 10b5-1 trading plan?

The Rule 10b5-1 checkbox is not marked as affirming a trading plan for this filing. The document instead links the sale to RSU vesting and tax withholding, without describing a pre-arranged 10b5-1 plan.

What type of security was involved in Renee Swan’s ATMU Form 4 transaction?

The transaction involved Common Stock of Atmus Filtration Technologies Inc. These shares were issued from a Restricted Stock Unit award that vested, with part of the resulting shares sold to cover taxes.

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

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Available on EDGAR 08/18/2026 - 01:23 PM Accepted by SEC EDGAR 08/18/2026 - 01:23 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^*

Swan Renee

(Last) (First) (Middle)

26 CENTURY BOULEVARD

(Street)

NASHVILLE TENNESSEE 37214

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chief People Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/17/2026

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)
			Code	V	Amount	(A) or (D)	Price
Common Stock	08/17/2026		S		3,870(1)	D	$50.893(2)	46,875	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 sold upon vesting of final portion of August 14, 2023 Restricted Stock Unit Award to pay reporting person's tax withholding obligation.

2. Reflects the average price of shares sold.

Remarks:

	/s/Tiffany B. Williams, Attorney-In-Fact for Renee Swan	08/18/2026
	** 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)