Updated Jul 16, 2026 · Last SEC filing 2026-06-02
Atmus Filtration Technologies Inc. (ATMU) has filed 12 SEC Form 4 insider transactions in the last 90 days, with the most recent on 2026-06-02. 4 Form 8-K material event filings were reported by ATMU in the last 90 days. 4 Form 144 notices of proposed sale were filed for ATMU stock. InsiderAlpha tracks every ATMU SEC filing — Form 4, Form 144, and 8-K — in real time, including Rule 10b5-1 plan detection.
| SIC classification | Motor Vehicle Parts & Accessories (SIC 3714) |
|---|---|
| SEC CIK | 0001921963 |
| Form 4 filings (90d) | 12 |
|---|---|
| Form 8-K filings (90d) | 4 |
| Form 144 notices (90d) | 4 |
| Latest Form 4 filing | 2026-06-02 |
| Date | Insider | Role | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Disher Stephanie | Chief Executive Officer | S — Open-market sale | 25.7K | $45.25 | $1.16M | SEC | |
| Swan Renee | Chief People Officer | S — Open-market sale | 2.6K | $45.25 | $116K | SEC | |
| Masters Charles | Senior Vice President | S — Open-market sale | 2.9K | $45.25 | $131K | SEC | |
| Kienzler Jack | Chief Financial Officer | S — Open-market sale | 5.1K | $45.25 | $232K | SEC | |
| Bennett Roy Edwin | Director | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| TAYLOR STUART A II | Director | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| Sharp Heath | Director | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| HAGGERTY GRETCHEN R | Director | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| Carpenter Kevin N | SVP-Chief Supply Chain Officer | A — Grant or award | 28.5K | $0.00 | — | SEC | |
| HAGGERTY GRETCHEN R | Director | P — Open-market purchase | 1.9K | $55.74 | $104K | SEC | |
| Donoso Diego | Director | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| HAGGERTY GRETCHEN R | Director | P — Open-market purchase | 100 | $55.71 | $6K | SEC | |
| HAGGERTY GRETCHEN R | Director | P — Open-market purchase | 1 | $55.74 | $56 | SEC | |
| Leipold Jane A | Director | A — Grant or award | 2.6K | $0.00 | — | SEC | |
| Macadam Stephen E. | Director | A — Grant or award | 2.6K | $0.00 | — | SEC |
All transactions sourced from SEC EDGAR Form 4 filings for Atmus Filtration Technologies Inc. (ATMU). Updated in real time as new filings are submitted to the SEC.
| Insider | Form 4 filings | Total transaction value |
|---|---|---|
| HAGGERTY GRETCHEN R | 4 | $110K |
| Kienzler Jack | 1 | $232K |
| Masters Charles | 1 | $131K |
| Bennett Roy Edwin | 1 | — |
| TAYLOR STUART A II | 1 | — |
Form 144 must be filed before insiders sell restricted or control stock above SEC thresholds. A cluster of Form 144 notices often precedes a wave of insider distribution.
SEC Form 4 transactions are reported with a one-letter code indicating the type of transaction. Common codes you'll see in ATMU insider filings:
| P | Open-market purchase by the insider |
|---|---|
| S | Open-market sale by the insider |
| A | Grant, award, or other acquisition from the issuer |
| M | Exercise or conversion of derivative security (e.g. options) |
| F | Payment of exercise price or tax liability via share withholding |
| G | Bona-fide gift of securities |
| D | Disposition to the issuer (e.g. share buyback participation) |
| J | Other acquisition or disposition |
| X | Exercise of in-the-money or at-the-money derivative security |
| C | Conversion of derivative security |
| V | Transaction voluntarily reported earlier than required |
Open the live ATMU dashboard on InsiderAlpha for real-time alerts, charting, and full historical filing search.