Atmus Filtration Technologies (ATMU) stock: insider trades, news & valuation
Net sellingShare price and insider trades
Atmus Filtration Technologies insider trading at a glance (Oct 9, 2026): in the past 12 months, 2 insiders bought $204K and 5 sold $1.8M of ATMU stock on the open market.
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ATMU insider buying and selling by quarter
Open-market purchases (green, above the line) and sales (red, below), by trade date.
| Quarter | Bought | Purchases | Sold | Sales |
|---|---|---|---|---|
| Q4 2026 | — | 0 | — | 0 |
| Q3 2026 | $100K | 1 | $197K | 1 |
| Q2 2026 | $110K | 3 | $1.6M | 4 |
| Q1 2026 | — | 0 | — | 0 |
| Q4 2025 | — | 0 | $977 | 1 |
| Q3 2025 | $2K | 2 | — | 0 |
| Q2 2025 | — | 0 | $2K | 1 |
Valuation, profit and volume
Summary
Over the past 12 months, 2 Atmus Filtration Technologies Inc. insiders reported open-market purchases totaling $204K, while 5 insiders reported sales totaling $1.8M. 0 of 7 recorded sales were made under pre-scheduled Rule 10b5-1 trading plans, which are usually less informative than discretionary sales.
Insider transactions
Open-market purchases and sales.
| Filed | Insider | Type | Shares | Price | Value | Since | Score |
|---|---|---|---|---|---|---|---|
| Aug 18SEC | Renee SwanChief People Officer | Sell | 3,87046,875 held (−8%) | $50.89 | $197K | -15.9% | — |
| Aug 13SEC | Stephen E. MacadamDirector | Buy | 2,00040,588 held (+5%) | $49.78 | $100K | -14.0% | — |
| Jun 2SEC | Stephanie DisherCEO | Sell | 25,652363,024 held (−7%) | $45.25 | $1.2M | -5.4% | — |
| Jun 2SEC | Jack KienzlerCFO | Sell | 5,13275,804 held (−6%) | $45.25 | $232K | -5.4% | — |
| Jun 2SEC | Charles MastersPresident | Sell | 2,89043,579 held (−6%) | $45.25 | $131K | -5.4% | — |
| Jun 2SEC | Renee SwanChief People Officer | Sell | 2,56650,745 held (−5%) | $45.25 | $116K | -5.4% | — |
| May 13SEC | Gretchen R HaggertyDirector | Buy | 1,87225,741 held (+8%) | $55.74 | $104K | -23.2% | — |
| May 13SEC | Gretchen R HaggertyDirector | Buy | 10023,868 held (+0%) | $55.71 | $6K | -23.2% | — |
| May 13SEC | Gretchen R HaggertyDirector | Buy | 123,869 held (+0%) | $55.74 | $56 | -23.2% | — |
| Nov 19SEC | Diego DonosoDirector | Sell | 409,038 held (−0%) | $37.79 | $2K | +13.3% | — |
| Nov 19SEC | Diego DonosoDirector | Buy | 259,063 held (+0%) | $45.00 | $1K | -4.9% | — |
| Nov 19SEC | Diego DonosoDirector | Sell | 209,058 held (−0%) | $48.84 | $977 | -12.3% | — |
| Nov 19SEC | Diego DonosoDirector | Buy | 159,078 held (+0%) | $45.81 | $687 | -6.5% | — |
Insiders at Atmus Filtration Technologies Inc.
| Insider | Bought | Sold | Last filing | Score |
|---|---|---|---|---|
| Stephanie DisherCEO | — | $1.2M | Jun 2, 2026 | — |
| Gretchen R HaggertyDirector | $110K | — | May 13, 2026 | — |
| Renee SwanChief People Officer | — | $313K | Aug 18, 2026 | — |
| Stephen E. MacadamDirector | $100K | — | Aug 13, 2026 | — |
| Jack KienzlerCFO | — | $232K | Jun 2, 2026 | — |
| Charles MastersPresident | — | $131K | Jun 2, 2026 | — |
| Diego DonosoDirector | $2K | $2K | Nov 19, 2025 | — |
ATMU stock: common questions
Are Atmus Filtration Technologies Inc. insiders buying ATMU stock?
In the past 12 months, 2 insiders reported open-market purchases of ATMU worth $204K. The latest was Director Stephen E. Macadam bought $100K of ATMU at $49.78 — first open-market purchase in our records.
Are Atmus Filtration Technologies Inc. insiders selling ATMU stock?
5 insiders reported sales worth $1.8M over the same period.
Where does this data come from?
Every transaction comes from Form 4 filings that insiders must submit to the SEC within two business days of a trade. We pull them from SEC EDGAR every night.
What is ATMU's 52-week range?
Over the past year ATMU has traded between $42.60 and $65.42. It last closed at $42.81 on Oct 9, 2026.