Insider Ledger
ATMU insider buying and SEC filings, explained
Atmus Filtration Technologies Inc. · CIK 1921963
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- NYSE
- Industry (SIC)
- Motor Vehicle Parts & Accessories
- Fiscal year end
- Dec 31
- Former names
- FILT Red, Inc.
Insider activity in the last 12 months
Bought
$210K
Insiders who bought
2
Sold (not marked 10b5-1)
$1.8M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Aug 17, 2026 | Sale | Renee Swan (Chief People Officer) sold 3,870 shares at $50.89 ($197K). Holdings down 8% to 46,875 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 18, 2026 |
| Aug 12, 2026 | Purchase (code P) | Stephen E. Macadam (Director) bought 2,000 shares at $49.78 ($100K), reported as a purchase (code P). Holdings up 5% to 40,588 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Aug 13, 2026 |
| Jun 1, 2026 | Sale | Renee Swan (Chief People Officer) sold 2,566 shares at $45.25 ($116K). Holdings down 5% to 50,745 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| Jun 1, 2026 | Sale | Jack Kienzler (CFO) sold 5,132 shares at $45.25 ($232K). Holdings down 6% to 75,804 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| Jun 1, 2026 | Sale | Charles Masters (Senior Vice President) sold 2,890 shares at $45.25 ($131K). Holdings down 6% to 43,579 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| Jun 1, 2026 | Sale | Stephanie Disher (CEO and Director) sold 25,652 shares at $45.25 ($1.2M). Holdings down 7% to 363,024 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 2, 2026 |
| May 12, 2026 | Purchase (code P) | Gretchen R. Haggerty (Director) bought 1,973 shares at about $55.74 ($110K), reported as a purchase (code P). Holdings up 8% to 25,741 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 13, 2026 |
| Apr 2–Nov 13, 2025 | Sale | Diego Donoso (Director) sold 60 shares between Apr 2, 2025 and Nov 13, 2025 at about $41.47 ($2K). Holdings down 1% to 9,058 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
| Aug 13–Sep 5, 2025 | Purchase (code P) | Diego Donoso (Director) bought 40 shares between Aug 13, 2025 and Sep 5, 2025 at about $45.30 ($2K), reported as a purchase (code P). Holdings up <1% to 9,078 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Nov 19, 2025 |
23 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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