Based on data from the past 90 days ending January 10, 2026, Atmus Filtration Technologies's three largest insider shareholders are Chief Executive Officer Stephanie Disher (270.47K shares), Chief Financial Officer Jack Kienzler (54.80K shares), Chief People Officer Renee Swan (44.64K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Stephanie Disher | Chief Executive Officer | 270,468 | 03 Apr, 2025 |
| Jack Kienzler | Chief Financial Officer | 54,796 | 07 Oct, 2025 |
| Renee Swan | Chief People Officer | 44,637 | 15 Aug, 2025 |
| Stephen E. Macadam | 35,969 | 21 May, 2025 | |
| Charles Masters | Senior Vice President | 32,364 | 07 Oct, 2025 |
| Toni Hickey | Chief Legal Officer | 25,629 | 17 Apr, 2024 |
| Gretchen R Haggerty | 23,768 | 21 May, 2025 | |
| Laura Heltebran | Clo & Corp Sec | 20,444 | 13 May, 2025 |
| Jane A Leipold | 17,919 | 21 May, 2025 | |
| Roy Edwin Bennett | 16,701 | 21 May, 2025 | |
| Stuart A Ii Taylor | 9,078 | 21 May, 2025 | |
| Diego Donoso | 9,078 | 21 May, 2025 | |
| Tony Satterthwaite | 4,012 | 19 Mar, 2024 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 03 Oct, 2025 | Charles Masters | Common Stock | D | 28 | $44.50 | 32,364 | D | F |
| 03 Oct, 2025 | Jack Kienzler | Common Stock | D | 25 | $44.50 | 54,796 | D | F |
| 14 Aug, 2025 | Renee Swan | Common Stock | D | 5,007 | $45.18 | 44,637 | D | F |
| 14 Aug, 2025 | Renee Swan | - | - | 44,637 | D | |||
| 20 May, 2025 | Stuart A Ii Taylor | Common Stock | A | 3,886 | $0.00 | 9,078 | D | A |
| 20 May, 2025 | Gretchen R Haggerty | Common Stock | A | 3,886 | $0.00 | 23,768 | D | A |
| 20 May, 2025 | Jane A Leipold | Common Stock | A | 3,886 | $0.00 | 17,919 | D | A |
| 20 May, 2025 | Stephen E. Macadam | Common Stock | A | 3,886 | $0.00 | 35,969 | D | A |
| 20 May, 2025 | Diego Donoso | Common Stock | A | 3,886 | $0.00 | 9,078 | D | A |
| 20 May, 2025 | Diego Donoso | - | - | 9,078 | D | |||
| 20 May, 2025 | Roy Edwin Bennett | Common Stock | A | 3,886 | $0.00 | 16,701 | D | A |
| 13 May, 2025 | Laura Heltebran | - | - | 20,444 | D | |||
| 13 May, 2025 | Laura Heltebran | Common Stock | A | 20,444 | $0.00 | 20,444 | D | A |
| 01 Apr, 2025 | Stephanie Disher | - | - | 270,468 | D | |||
| 01 Apr, 2025 | Stephanie Disher | Common Stock | A | 40,021 | $0.00 | 270,468 | D | A |
| 01 Apr, 2025 | Charles Masters | Common Stock | A | 4,402 | $0.00 | 32,392 | D | A |
| 01 Apr, 2025 | Jack Kienzler | Common Stock | A | 6,804 | $0.00 | 54,821 | D | A |
| 01 Apr, 2025 | Renee Swan | Common Stock | A | 2,802 | $0.00 | 49,644 | D | A |
| 03 Mar, 2025 | Stephanie Disher | Common Stock | D | 2,463 | $39.80 | 230,447 | D | F |
| 03 Mar, 2025 | Stephanie Disher | Common Stock | D | 2,715 | $39.80 | 232,910 | D | F |