Atmus Filtration Technologies Inc. Insider Trading

ATMU

Last 12 months

Insiders bought 210K and sold $1.84M on the open market.

None of the selling was scheduled in advance under a 10b5-1 plan. Chief Executive Officer Stephanie Disher sold $1.16M on Jun 1, 6.6% of their stake, outside a plan.

Net open-market

−$1.63M

2 buys · 6 sales

Under a 10b5-1 plan

of the value sold

Insiders who bought / sold

2 / 5

executives and directors

Last open-market buy

Aug 2026

Aug 12, 2026

Get an email when ATMU's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Aug 17	Renee Swan Chief People Officer	SoldNo plan	3,870	$50.89	197K	7.6%	Form 4
Aug 12	Stephen E. Macadam Director	Bought	2,000	$49.78	100K	5.2%	Form 4
Jun 1	Renee Swan Chief People Officer	SoldNo plan	2,566	$45.25	116K	4.8%	Form 4
Jun 1	Jack Kienzler Chief Financial Officer	SoldNo plan	5,132	$45.25	232K	6.3%	Form 4
Jun 1	Charles Masters Senior Vice President	SoldNo plan	2,890	$45.25	131K	6.2%	Form 4
Jun 1	Stephanie Disher Chief Executive Officer	SoldNo plan	25,652	$45.25	$1.16M	6.6%	Form 4
May 12	Gretchen R Haggerty Director	Bought 3 parts	1,973	$55.74 average	110K	7.5%	Form 4
Apr 2, 2025 – Nov 13, 2025	Diego Donoso Director	SoldNo plan 2 parts	60	$41.47 average	2K	0.7%	Form 4
Aug 13, 2025 – Sep 5, 2025	Diego Donoso Director	Bought 2 parts	40	$45.30 average	2K	0.4%	Form 4

Aug 17No plan
Renee Swan
Chief People Officer · sold 3,870 at $50.89
197K
7.6% of stake
Aug 12
Stephen E. Macadam
Director · bought 2,000 at $49.78
100K
5.2% of stake
Jun 1No plan
Renee Swan
Chief People Officer · sold 2,566 at $45.25
116K
4.8% of stake
Jun 1No plan
Jack Kienzler
Chief Financial Officer · sold 5,132 at $45.25
232K
6.3% of stake
Jun 1No plan
Charles Masters
Senior Vice President · sold 2,890 at $45.25
131K
6.2% of stake
Jun 1No plan
Stephanie Disher
Chief Executive Officer · sold 25,652 at $45.25
$1.16M
6.6% of stake
May 12
Gretchen R Haggerty
Director · bought 1,973 at avg $55.74
110K
7.5% of stake
Apr 2, 2025 – Nov 13, 2025No plan
Diego Donoso
Director · sold 60 at avg $41.47
2K
0.7% of stake
Aug 13, 2025 – Sep 5, 2025
Diego Donoso
Director · bought 40 at avg $45.30
2K
0.4% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch ATMU, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Held by ETFs

ATMU is in 92 US ETFs. The largest of them, with ATMU's weight in each:

Spot a number that looks wrong? Check it in ATMU's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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