Masters Charles (CIK 1977908) reported 11 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-06-02). Recent activity: Sell ATMU (2,890 shares), Buy ATMU (4,130 shares), Sell ATMU (9,046 shares), Sell ATMU (2,131 shares), Buy ATMU (21,152 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-02 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Sell | 2,890 | $130,764 |
| 2026-04-02 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Buy | 4,130 | $0 |
| 2026-03-03 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Sell | 9,046 | $583,738 |
| 2026-03-03 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Sell | 2,131 | $137,513 |
| 2026-02-17 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Buy | 21,152 | $0 |
| 2025-10-07 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Sell | 28 | $1,246 |
| 2025-04-03 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Buy | 4,402 | $0 |
| 2025-03-05 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Sell | 736 | $29,293 |
| 2025-03-05 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Sell | 570 | $22,686 |
| 2025-02-19 | Atmus Filtration Technologies Inc. (ATMU) | Senior Vice President | Buy | 2,252 | $0 |
| 2025-01-23 | Atmus Filtration Technologies Inc. (ATMU) | VP, Engine Products | Sell | 20 | $759 |
Source: SEC Form 4 filings · as of 2026-06-02