Atmus Filtration Technologies Inc. (ATMU) insider buying and selling
In the last 90 days at Atmus Filtration Technologies Inc. (ATMU), 1 insider made 1 open-market purchase worth $100K and 1 insider made 1 open-market sale worth $197K, as reported on SEC Form 4. The sale was scheduled in advance or made to cover tax on vesting shares, so they say less about the insider's view of the stock. Over the last 12 months, 2 insiders bought $210K of the stock, led by GRETCHEN R HAGGERTY (Director), who bought $110K on May 12, 2026; 4 insiders sold $1.8M, of which $1.8M was scheduled or tax-related.
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Trades by the same insider within a week are shown as one line.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Stephen E. Macadam Director | Open market purchase | 2,000 | $49.78 | $100K | |
| GRETCHEN R HAGGERTY Director | Open market purchase 3 trades | 1,973 | avg. $55.74 | $110K |
Scheduled and tax-related sales
Sales made under a pre-arranged 10b5-1 plan or to cover tax on vesting shares. They are listed separately because they are not a fresh decision to sell.
| Date | Insider | Type | Shares | Price | Value |
|---|---|---|---|---|---|
| Renee Swan Chief People Officer | Sell to cover | 3,870 | $50.89 | $197K | |
| Stephanie Disher CEO | Sell to cover | 25,652 | $45.25 | $1.2M | |
| Jack Kienzler CFO | Sell to cover | 5,132 | $45.25 | $232K | |
| Charles Masters SVP | Sell to cover | 2,890 | $45.25 | $131K | |
| Renee Swan Chief People Officer | Sell to cover | 2,566 | $45.25 | $116K |
What the ATMU insider trades really mean
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Questions about ATMU insider trading
Who bought Atmus Filtration Technologies Inc. (ATMU) stock recently?
Insiders who bought Atmus Filtration Technologies Inc. stock on the open market in the last 12 months: GRETCHEN R HAGGERTY ($110K), Stephen E. Macadam ($100K). The most recent purchase was reported on Aug 12, 2026.
Are insiders buying or selling ATMU?
Over the last 12 months insiders were net buyers of ATMU on discretionary trades: $210K bought against $0 sold (scheduled and tax-related sales excluded).
What is a sell-to-cover or 10b5-1 sale?
A 10b5-1 sale is scheduled in advance under a pre-arranged plan, and a sell-to-cover sale is made to pay tax on vesting shares. Neither is a fresh decision to sell, so they say less about an insider's view than a discretionary sale.
Where does this data come from?
Officers, directors and large shareholders report their trades to the SEC on Form 4. This page lists the open-market purchases and sales by individual insiders from those public filings; funds and other institutions are not shown.
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How to read this page
Officers, directors and large shareholders must report their trades in company shares to the SEC on Form 4. This page lists open-market purchases and sales by individual insiders: trades made on the stock exchange at the going price. Funds and other institutions are not shown here.
Information from SEC EDGAR Form 4 filings, shown for general information only. It is not financial advice and does not recommend buying or selling any security. Trades are shown by transaction date and may be reported up to two business days later.