Charles Masters insider trades: Atmus Filtration Technologies (ATMU) stock sales
Trades on the price chart
Daily close, with an arrow on each day they bought or sold
Companies
Where Charles reports to the SEC
Open-market buys and sales
1 trade reported on SEC Form 4, newest first
| Date | Stock | Type | Shares | Price | Value | Holding | Reported |
|---|---|---|---|---|---|---|---|
| Jun 1, 2026 | ATMU | ↓ Sell | 2,890 | $45.25 | $131K | Direct | Jun 2, 2026 (1d) |
Each row is one filing's trades in one stock, summed. Shares and prices are as filed, before any later stock split.
Other ATMU insiders
Open-market trades in the last 12 months
About Charles Masters's insider trades
Charles Masters is Senior Vice President at Atmus Filtration Technologies (ATMU). Since Jun 1, 2026, Charles has reported no open-market purchases and 1 sale worth $131K on SEC Form 4. In the last 12 months: 1 sale ($131K).
Their filings also include grants and awards (11 filings), shares withheld for taxes (5 filings). These aren't open-market trades and aren't counted above.
How to read insider trades
Officers, directors and owners of more than 10% of a company must report trades in its stock on SEC Form 4, usually within two business days. Purchases with their own money are the stronger signal: insiders sell for many reasons (taxes, diversification, a house), but buy for one. See every ATMU insider trade, the latest insider trades across the market, or cluster buys, when several insiders buy the same stock within days.