Insider Transactions Reported by 21 Insiders of Atmus Filtration Technologies Inc.

Symbol: ATMU on NYSE
Location: Nashville, TN

Quick Takeaways

ATMU - Atmus Filtration Technologies Inc. has 21 insiders with reported activity on this page.
Net insider value flow over the last year: +$835.
Recent transaction rows are available for direct filing-level review.

What Changed

Buy value: $1,812; sell value: $976.
Net share flow: +20.

Why This Matters

This page gives a plain-language issuer insider context before you inspect transaction-level evidence.
Use the filing links below to verify timestamps, codes, and ownership impacts directly from SEC forms.

Official SEC Source

Filed on Form 4

Issuer insider activity is sourced from SEC Forms 3, 4, and 5.

See Original Filing

Insider trading overview

Last 12 months

Net insider flow leans to buying over the last 12 months. Net value: +$835.

Buys

$1,812

Shares: 40

Insiders: 1

Sells

$977

Shares: 20

Insiders: 1

Net

+$835

Shares: +20

Insiders: 0

Window (months)	Buy shares	Sell shares	Buy $	Sell $	Net $
0-3	0	0	$0	$0	$0
3-6	0	20	$0	$977	-$977
6-9	40	0	$1,812	$0	+$1,812
9-12	0	0	$0	$0	$0

Atmus Filtration Technologies Inc. executives and other stock owners filed with the SEC include:

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Valuation	Report Date
Stephanie Disher	Chief Executive Officer, Director	$20,176,171			Mixed	01 Apr 2026
Jack Kienzler	Chief Financial Officer	$4,201,387			Mixed	01 Apr 2026
Renee Swan	Chief People Officer	$2,767,374			Mixed	01 Apr 2026
Charles Masters	Senior Vice President	$2,412,205			Mixed	01 Apr 2026
Laura Heltebran	CLO & Corp Sec	$1,254,197			Mixed	01 Apr 2026
Stephen E. Macadam	Director	$1,236,254			Mixed	20 May 2025
Gretchen R. Haggerty	Director	$816,899			Mixed	20 May 2025
Jane A. Leipold	Director	$615,876			Mixed	20 May 2025
Toni Y. Hickey	Chief Legal Officer	$614,071			Mixed	16 Apr 2024
Roy Edwin Bennett	Director	$574,013			Mixed	20 May 2025
Diego Donoso	Director	$391,806	+$835	+0.21%	Mixed	20 May 2025
Stuart A. Taylor II	Director	$312,010			Mixed	20 May 2025
Heath Sharp	Director	$161,647			Mixed	05 Feb 2026
CUMMINS INC	10%+ Owner	$0			Mixed	18 Mar 2024
Sharon R. Barner	Director				Mixed	25 May 2023
Tony Satterthwaite	Director				Mixed	18 Mar 2024
Earl Newsome	Director				Mixed	25 May 2023
Nathan R. Stoner	Director				Mixed	25 May 2023
Mark Andrew Smith	Director				Mixed	25 May 2023
Cristina Burrola	Director				Mixed	25 May 2023
Mark Osowick	Chief Human Resources Officer				Mixed	25 May 2023

Top shareholders of Atmus Filtration Technologies Inc. (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
VANGUARD GROUP INC	13F	Company	9.6%	7,842,193	$407,088,239	—	31 Dec 2025	13F
BlackRock, Inc.	13F	Company	8.3%	6,770,562	$351,459,872	—	31 Dec 2025	13F
PRICE T ROWE ASSOCIATES INC /MD/	13D/G 13F	T. Rowe Price Associates, Inc. · Company	5.7%	4,677,937	$242,831,710	+$132,607,210	31 Dec 2025	13D/G 13F
FMR LLC	13D/G 13F	Company	5.4%	4,419,785	$229,432,365	+$59,590,325	31 Dec 2025	13D/G 13F
EMINENCE CAPITAL, LP	13F 13D/G	Company	4.7% from 13D/G	3,825,346	$198,573,711	—	31 Dec 2025	13F 13D/G
GOLDMAN SACHS GROUP INC	13F	Company	3.9%	3,202,142	$166,223,186	—	31 Dec 2025	13F
Invesco Ltd.	13F	Company	3.4%	2,728,470	$141,634,878	—	31 Dec 2025	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	3%	2,428,684	$126,088,013	—	31 Dec 2025	13F
FIRST TRUST ADVISORS LP	13F	Company	2.6%	2,131,911	$110,667,500	—	31 Dec 2025	13F
MORGAN STANLEY	13F	Company	2.6%	2,123,403	$110,226,019	—	31 Dec 2025	13F
STATE STREET CORP	13F	Company	2.3%	1,901,704	$98,717,455	—	31 Dec 2025	13F
Channing Capital Management, LLC	13F	Company	2%	1,628,893	$84,555,836	—	31 Dec 2025	13F
T. Rowe Price Investment Management, Inc.	13F	Company	2%	1,622,786	$84,239,000	—	31 Dec 2025	13F
WELLINGTON MANAGEMENT GROUP LLP	13F	Company	2%	1,602,495	$83,185,515	—	31 Dec 2025	13F
D. E. Shaw & Co., Inc.	13F	Company	1.8%	1,443,969	$74,956,431	—	31 Dec 2025	13F
WESTWOOD HOLDINGS GROUP INC	13F	Company	1.7%	1,381,485	$71,712,886	—	31 Dec 2025	13F
JANUS HENDERSON GROUP PLC	13F	Company	1.7%	1,369,325	$71,070,016	—	31 Dec 2025	13F
MANGROVE PARTNERS IM, LLC	13F	Company	1.6%	1,315,227	$68,273,434	—	31 Dec 2025	13F
Nuveen, LLC	13F	Company	1.6%	1,310,440	$68,024,940	—	31 Dec 2025	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.5%	1,257,834	$65,296,514	—	31 Dec 2025	13F
Parsifal Capital Management, LP	13F	Company	1.5%	1,234,287	$64,071,838	—	31 Dec 2025	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	1.1%	935,875	$48,581,271	—	31 Dec 2025	13F
MASSACHUSETTS FINANCIAL SERVICES CO /MA/	13F	Company	1.1%	877,401	$45,545,886	—	31 Dec 2025	13F
Port Capital LLC	13F	Company	1.1%	876,720	$45,510,535	—	31 Dec 2025	13F
RAYMOND JAMES FINANCIAL INC	13F	Company	1.1%	865,510	$45,254,287	—	31 Dec 2025	13F
Boston Trust Walden Corp	13F	Company	1%	853,477	$44,303,991	—	31 Dec 2025	13F
MANUFACTURERS LIFE INSURANCE COMPANY, THE	13F	Company	0.95%	769,727	$39,956,529	—	31 Dec 2025	13F
SILVERCREST ASSET MANAGEMENT GROUP LLC	13F	Company	0.92%	750,650	$38,966,452	—	31 Dec 2025	13F
Allspring Global Investments Holdings, LLC	13F	Company	0.91%	740,503	$38,809,762	—	31 Dec 2025	13F
NORTHERN TRUST CORP	13F	Company	0.88%	716,662	$37,201,924	—	31 Dec 2025	13F
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC	13F	Company	0.84%	681,972	$35,401,167	—	31 Dec 2025	13F
BANK OF AMERICA CORP /DE/	13F	Company	0.82%	667,976	$34,674,634	—	31 Dec 2025	13F
ROYCE & ASSOCIATES LP	13F	Company	0.82%	667,812	$34,666,121	—	31 Dec 2025	13F
FRONTIER CAPITAL MANAGEMENT CO LLC	13F	Company	0.8%	653,554	$33,925,988	—	31 Dec 2025	13F
Assenagon Asset Management S.A.	13F	Company	0.78%	634,588	$32,941,463	—	31 Dec 2025	13F
TEACHER RETIREMENT SYSTEM OF TEXAS	13F	Company	0.73%	590,718	$30,664,171	—	31 Dec 2025	13F
ALGERT GLOBAL LLC	13F	Company	0.7%	569,937	$29,585,000	—	31 Dec 2025	13F
MARSHALL WACE, LLP	13F	Company	0.69%	564,727	$29,314,980	—	31 Dec 2025	13F
Medina Value Partners, LLC	13F	Company	0.63%	512,260	$26,591,417	—	31 Dec 2025	13F
GW&K Investment Management, LLC	13F	Company	0.59%	482,682	$25,056,000	—	31 Dec 2025	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.55%	443,994	$23,047,729	—	31 Dec 2025	13F
FEDERATED HERMES, INC.	13F	Company	0.51%	412,987	$21,438,156	—	31 Dec 2025	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.5%	409,278	$21,245,621	—	31 Dec 2025	13F
Aberdeen Group plc	13F	Company	0.49%	400,699	$20,800,285	—	31 Dec 2025	13F
Stephanie Disher	3/4/5	Chief Executive Officer, Director	0.48%	388,676	$20,176,171	—	01 Apr 2026	3/4/5
Ancora Advisors LLC	13F	Company	0.46%	375,615	$19,498,175	—	31 Dec 2025	13F
Schonfeld Strategic Advisors LLC	13F	Company	0.45%	366,118	$19,005,183	—	31 Dec 2025	13F
LOOMIS SAYLES & CO L P	13F	Company	0.43%	351,987	$18,271,645	—	31 Dec 2025	13F
Bank of New York Mellon Corp	13F	Company	0.43%	351,072	$18,224,148	—	31 Dec 2025	13F
KENNEDY CAPITAL MANAGEMENT LLC	13F	Company	0.42%	343,848	$17,849,150	—	31 Dec 2025	13F

Recent Insider Transactions by Companies or Individuals for Atmus Filtration Technologies Inc.

Showing up to 300 most recent insider transactions from the last 12 months.

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership
Stephanie Disher	ATMU	Common Stock	Award	8.82%			31,492	388,676	01 Apr 2026	Direct
Jack Kienzler	ATMU	Common Stock	Award	6.81%			5,163	80,936	01 Apr 2026	Direct
Laura Heltebran	ATMU	Common Stock	Award	18.2%			3,717	24,161	01 Apr 2026	Direct
Charles Masters	ATMU	Common Stock	Award	9.75%			4,130	46,469	01 Apr 2026	Direct
Renee Swan	ATMU	Common Stock	Award	3.82%			1,962	53,311	01 Apr 2026	Direct
Charles Masters	ATMU	Common Stock	Tax liability	-20.9%			-11,177	42,339	27 Feb 2026	Direct
Renee Swan	ATMU	Common Stock	Tax liability	-18.7%			-11,824	51,349	27 Feb 2026	Direct
Jack Kienzler	ATMU	Common Stock	Tax liability	-21%			-20,117	75,773	27 Feb 2026	Direct
Stephanie Disher	ATMU	Common Stock	Tax liability	-18.8%			-82,493	357,184	27 Feb 2026	Direct
Renee Swan	ATMU	Common Stock	Award	41.5%			18,536	63,173	13 Feb 2026	Direct
Charles Masters	ATMU	Common Stock	Award	65.4%			21,152	53,516	13 Feb 2026	Direct
Jack Kienzler	ATMU	Common Stock	Award	75%			41,094	95,890	13 Feb 2026	Direct
Stephanie Disher	ATMU	Common Stock	Award	62.6%			169,209	439,677	13 Feb 2026	Direct
Heath Sharp	ATMU	Common Stock	Award	24.6%			614	3,114	05 Feb 2026	Direct
Diego Donoso	ATMU	Common Stock	Other	0.22%			20	9,078	18 Nov 2025	Direct
Diego Donoso	ATMU	Common Stock	Sale	-0.22%	$977	$48.84	-20	9,058	13 Nov 2025	Direct
Jack Kienzler	ATMU	Common Stock	Tax liability	-0.05%			-25	54,796	03 Oct 2025	Direct
Charles Masters	ATMU	Common Stock	Tax liability	-0.09%			-28	32,364	03 Oct 2025	Direct
Diego Donoso	ATMU	Common Stock	Purchase	0.17%	$687	$45.81	15	9,078	05 Sep 2025	Direct
Renee Swan	ATMU	Common Stock	Tax liability	-10.1%			-5,007	44,637	14 Aug 2025	Direct
Diego Donoso	ATMU	Common Stock	Purchase	0.28%	$1,125	$45.00	25	9,063	13 Aug 2025	Direct
Roy Edwin Bennett	ATMU	Common Stock	Award	30.3%			3,886	16,701	20 May 2025	Direct
Diego Donoso	ATMU	Common Stock	Award	74.8%			3,886	9,078	20 May 2025	Direct
Gretchen R. Haggerty	ATMU	Common Stock	Award	19.6%			3,886	23,768	20 May 2025	Direct
Jane A. Leipold	ATMU	Common Stock	Award	27.7%			3,886	17,919	20 May 2025	Direct
Stephen E. Macadam	ATMU	Common Stock	Award	12.1%			3,886	35,969	20 May 2025	Direct
Stuart A. Taylor II	ATMU	Common Stock	Award	74.8%			3,886	9,078	20 May 2025	Direct
Laura Heltebran	ATMU	Common Stock	Award				20,444	20,444	13 May 2025	Direct

* An asterisk sign (*) next to the price indicates that the price is likely invalid.