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Atmus Filtration Technologies Inc. (ATMU)

Atmus Filtration Technologies Inc. (ATMU) Insider Trading

Directors, officers and holders of more than 10% of ATMU report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 68 transactions on file: 6 with code P, 7 with code S and 37 with other codes.

DateInsiderCodeShares
Aug 17, 2026Swan ReneeS Sale3,870
Aug 12, 2026Macadam Stephen E.P Purchase2,000
Jun 1, 2026Swan ReneeS Sale2,566
Jun 1, 2026Masters CharlesS Sale2,890
Jun 1, 2026Kienzler JackS Sale5,132
Jun 1, 2026Disher StephanieS Sale25,652
May 12, 2026Leipold Jane AA Award2,619
May 12, 2026Macadam Stephen E.A Award2,619
May 12, 2026Sharp HeathA Award2,619
May 12, 2026HAGGERTY GRETCHEN RA Award2,619
May 12, 2026HAGGERTY GRETCHEN RP Purchase1
May 12, 2026HAGGERTY GRETCHEN RP Purchase1,872
May 12, 2026HAGGERTY GRETCHEN RP Purchase100
May 12, 2026Carpenter Kevin NA Award28,509
May 12, 2026Bennett Roy EdwinA Award2,619
May 12, 2026Donoso DiegoA Award2,619
May 12, 2026TAYLOR STUART A IIA Award2,619
Apr 1, 2026Heltebran LauraA Award3,717
Apr 1, 2026Disher StephanieA Award31,492
Apr 1, 2026Swan ReneeA Award1,962
Apr 1, 2026Masters CharlesA Award4,130
Apr 1, 2026Kienzler JackA Award5,163
Feb 27, 2026Swan ReneeF Tax Payment9,570
Feb 27, 2026Masters CharlesF Tax Payment9,046
Feb 27, 2026Masters CharlesF Tax Payment2,131
Feb 27, 2026Disher StephanieF Tax Payment15,854
Feb 27, 2026Disher StephanieF Tax Payment66,639
Feb 27, 2026Kienzler JackF Tax Payment3,851
Feb 27, 2026Kienzler JackF Tax Payment16,266
Feb 27, 2026Swan ReneeF Tax Payment2,254
Feb 13, 2026Swan ReneeA Award18,536
Feb 13, 2026Masters CharlesA Award21,152
Feb 13, 2026Kienzler JackA Award41,094
Feb 13, 2026Disher StephanieA Award169,209
Feb 5, 2026Sharp HeathA Award614
Nov 18, 2025Donoso DiegoJ Other20
Nov 13, 2025Donoso DiegoS Sale20
Oct 3, 2025Kienzler JackF Tax Payment25
Oct 3, 2025Masters CharlesF Tax Payment28
Sep 5, 2025Donoso DiegoP Purchase15
Aug 14, 2025Swan ReneeF Tax Payment5,007
Aug 13, 2025Donoso DiegoP Purchase25
May 20, 2025Macadam Stephen E.A Award3,886
May 20, 2025HAGGERTY GRETCHEN RA Award3,886
May 20, 2025Donoso DiegoA Award3,886
May 20, 2025Bennett Roy EdwinA Award3,886
May 20, 2025TAYLOR STUART A IIA Award3,886
May 20, 2025Leipold Jane AA Award3,886
May 13, 2025Heltebran LauraA Award20,444
Apr 2, 2025Donoso DiegoS Sale40

The full Form 4 history is on the ATMU company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.