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  4. [Form 4] Atmus Filtration Technologies Inc. Insider Trading Activity

Atmus (ATMU) CFO sells 5,132 shares in tax-related stock transaction

Filing Impact
(High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Atmus Filtration Technologies Inc. Chief Financial Officer Jack Kienzler reported a disposition of company stock. He sold 5,132 shares of Common Stock at an average price of $45.247 per share. According to the footnote, these shares were sold upon vesting of the first half of a launch grant award to pay his tax withholding obligation. After this transaction, he directly holds 75,804 shares, indicating he retained a substantial equity position in the company following the tax-related sale.

Positive

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Negative

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Insider Kienzler Jack
Role Chief Financial Officer
Sold 5,132 shs ($232K)
Type Security Shares Price Value
Sale Common Stock 5,132 $45.247 $232K
Holdings After Transaction: Common Stock — 75,804 shares (Direct, null)
Footnotes (1)
  1. [object Object]
Shares sold 5,132 shares Common Stock disposition on 2026-06-01
Average sale price $45.247 per share Price for 5,132 shares sold
Shares held after transaction 75,804 shares Direct holdings after sale
Net shares sold 5,132 shares Net sell direction in transaction summary
Common Stock financial
"He sold 5,132 shares of Common Stock at an average price"
Common stock represents ownership shares in a company, giving investors a stake in its success and a say in important decisions through voting rights. It is the most common type of stock traded on markets and can provide income through dividends, as well as potential for value growth. For investors, holding common stock means sharing in the company’s profits and risks.
open-market sale financial
"transaction_action is described as an open-market sale"
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 ... to pay reporting person's tax withholding obligation"
launch grant award financial
"vesting of first half of launch grant award to pay"
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Form 4 Insider Transactions: What Each Field Means →
SEC Form 4
FORM 4UNITED 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*
Kienzler Jack
(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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial 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)
XForm 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)
CodeVAmount(A) or (D)Price
Common Stock06/01/2026S5,132(1)D$45.24775,804D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount 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 Jack Kienzler06/02/2026
** Signature of Reporting PersonDate
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)

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Atmus (ATMU) report for CFO Jack Kienzler?

Atmus reported that CFO Jack Kienzler sold 5,132 shares of Common Stock at $45.247 per share. The filing notes the sale was linked to vesting of a launch grant award and used to satisfy his tax withholding obligation.

How many Atmus (ATMU) shares did the CFO sell and at what price?

CFO Jack Kienzler sold 5,132 shares of Atmus Common Stock at an average price of $45.247 per share. This transaction was disclosed as part of a Form 4 insider trading report filed with regulators.

Why did the Atmus (ATMU) CFO sell 5,132 shares in this Form 4 filing?

The CFO sold 5,132 shares to cover his tax withholding obligation related to the vesting of the first half of a launch grant award. The footnote clarifies this was a tax-driven transaction rather than a discretionary open-market sale.

How many Atmus (ATMU) shares does the CFO hold after the reported sale?

After the transaction, CFO Jack Kienzler directly holds 75,804 shares of Atmus Common Stock. This post-transaction holding, disclosed in the Form 4, shows he maintains a significant ongoing equity stake in the company.

Is the Atmus (ATMU) CFO’s share sale considered an open-market transaction?

The transaction code shows a sale, but the footnote explains the shares were sold upon vesting of a grant to pay tax withholding. This indicates a tax-related disposition rather than a purely discretionary open-market trading decision.