Atmus CEO sells 25,652 shares to cover taxes

Atmus Filtration Technologies Inc. director and Chief Executive Officer Stephanie Disher sold 25,652 shares of common stock on June 1, 2026 at $45.247 per share.

Rhea-AI Filing Summary

Atmus Filtration Technologies Inc. director and Chief Executive Officer Stephanie Disher sold 25,652 shares of common stock on June 1, 2026 at $45.247 per share. A footnote explains the sale reflects shares sold upon vesting of the first half of a launch grant award to pay her tax withholding obligation. Following this transaction, she directly holds 363,024 shares.

Insights

Equity compensation analyst

CEO sale mainly covers taxes on vesting, with sizable holdings retained.

Chief Executive Officer Stephanie Disher reported selling 25,652 shares of Atmus Filtration Technologies Inc. common stock at $45.247 per share on June 1, 2026. The transaction is coded as an open-market sale in the filing.

A key footnote states these shares were sold upon vesting of the first half of a launch grant award to cover her tax withholding obligation. This makes the sale largely mechanistic, tied to compensation and taxes rather than a discretionary portfolio move.

After the sale, Disher still directly owns 363,024 shares. The disposition represents a relatively small portion of her reported stake, suggesting this is a routine equity-compensation-related tax event rather than a major change in her exposure to Atmus stock.

Insider Trade Summary

Net Seller: 25,652 shares

Net Sell 1 txn

Insider Disher Stephanie

Role Chief Executive Officer

Sold 25,652 shs ($1.16M)

Type	Security	Shares	Price	Value
Sale	Common Stock	25,652	$45.247	$1.16M

Holdings After Transaction: Common Stock — 363,024 shares (Direct)

Footnotes (1)

1. F1. Reflects shares sold upon vesting of first half of launch grant award to pay reporting person's tax withholding obligation.

Key Figures

Shares sold: 25,652 shares Sale price per share: $45.247 per share Shares owned after transaction: 363,024 shares

3 metrics

Shares sold 25,652 shares Common stock sold on June 1, 2026

Sale price per share $45.247 per share Price for sold common stock

Shares owned after transaction 363,024 shares Direct holdings after reported sale

Key Terms

open-market sale, tax withholding obligation, launch grant award

3 terms

open-market sale financial

"transaction_action is described as an open-market sale of common stock"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

tax withholding obligation financial

"shares sold upon vesting of launch grant award to pay tax withholding obligation"

launch grant award financial

"footnote references vesting of first half of launch grant award"

FAQ

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

What insider transaction did Atmus Filtration (ATMU) disclose for Stephanie Disher?

Atmus Filtration disclosed that CEO and director Stephanie Disher sold 25,652 shares of common stock. The sale occurred on June 1, 2026 at a price of $45.247 per share, according to the Form 4 filing details.

Why did Atmus CEO Stephanie Disher sell 25,652 ATMU shares?

A Form 4 footnote states the 25,652 shares sold by CEO Stephanie Disher were disposed of upon vesting of the first half of a launch grant award. The sale was used to pay her tax withholding obligation related to that equity compensation vesting.

How many Atmus (ATMU) shares does Stephanie Disher hold after this sale?

Following the reported transaction, CEO Stephanie Disher directly owns 363,024 shares of Atmus Filtration Technologies common stock. This figure, disclosed in the Form 4, reflects her position after selling 25,652 shares to cover tax withholding.

What was the sale price in Stephanie Disher’s Atmus Form 4 transaction?

The Form 4 reports that the 25,652 shares of Atmus common stock sold by CEO Stephanie Disher were transacted at an average price of $45.247 per share. This price applies to the shares sold to fund her tax withholding obligation.

Is Stephanie Disher’s Atmus (ATMU) share sale a routine tax-withholding event?

The filing’s footnote indicates the sale was linked to vesting of a launch grant award and was used to pay the reporting person’s tax withholding obligation. That language suggests this transaction is a routine equity-compensation-related tax event rather than a discretionary large sale.

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

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Accepted by SEC EDGAR 06/02/2026 - 06:23 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^*

Disher Stephanie

(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)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Executive Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/01/2026

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	06/01/2026		S		25,652(1)	D	$45.247	363,024	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 first half of launch grant award to pay reporting person's tax withholding obligation.

Remarks:

	/s/Tiffany B. Williams, Attorney-in-Fact for Stephanie Disher	06/02/2026
	** 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)