ATMU's three largest insider shareholders as of March 23, 2026 are Stephanie Disher (Chief Executive Officer, 357.18K shares), Jack Kienzler (Chief Financial Officer, 75.77K shares), Renee Swan (Chief People Officer, 51.35K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jack Kienzler | Chief Financial Officer | 80,936 | 0 | 02 Apr, 2026 |
| Renee Swan | Chief People Officer | 53,311 | 0 | 02 Apr, 2026 |
| Charles Masters | Senior Vice President | 46,469 | 0 | 02 Apr, 2026 |
| Toni Hickey | Chief Legal Officer | 25,629 | 0 | 17 Apr, 2024 |
| Laura Heltebran | Clo Corp Sec | 24,161 | 0 | 02 Apr, 2026 |
| Jane A Leipold | - | 17,919 | 0 | 21 May, 2025 |
| Tony Satterthwaite | - | 4,012 | 0 | 19 Mar, 2024 |
| Heath Sharp | - | 3,114 | 0 | 09 Feb, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 01 Apr, 2026 | Renee Swan | Common Stock | A | 1,962 | $0.00 | 53,311 | D | A |
| 01 Apr, 2026 | Jack Kienzler | Common Stock | A | 5,163 | $0.00 | 80,936 | D | A |
| 01 Apr, 2026 | Charles Masters | Common Stock | A | 4,130 | $0.00 | 46,469 | D | A |
| 01 Apr, 2026 | Laura Heltebran | Common Stock | A | 3,717 | $0.00 | 24,161 | D | A |
| 27 Feb, 2026 | Charles Masters | Common Stock | D | 9,046 | $64.53 | 44,470 | D | F |
| 27 Feb, 2026 | Jack Kienzler | Common Stock | D | 16,266 | $64.53 | 79,624 | D | F |
| 27 Feb, 2026 | Renee Swan | Common Stock | D | 9,570 | $64.53 | 53,603 | D | F |
| 27 Feb, 2026 | Renee Swan | Common Stock | D | 2,254 | $64.53 | 51,349 | D | F |
| 27 Feb, 2026 | Charles Masters | Common Stock | D | 2,131 | $64.53 | 42,339 | D | F |
| 27 Feb, 2026 | Jack Kienzler | Common Stock | D | 3,851 | $64.53 | 75,773 | D | F |
| 13 Feb, 2026 | Charles Masters | Common Stock | A | 21,152 | $0.00 | 53,516 | D | A |
| 13 Feb, 2026 | Jack Kienzler | Common Stock | A | 41,094 | $0.00 | 95,890 | D | A |
| 13 Feb, 2026 | Renee Swan | Common Stock | A | 18,536 | $0.00 | 63,173 | D | A |
| 05 Feb, 2026 | Heath Sharp | Common Stock | A | 614 | $0.00 | 3,114 | D | A |
| 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 |
| 20 May, 2025 | Jane A Leipold | Common Stock | A | 3,886 | $0.00 | 17,919 | D | A |
| 13 May, 2025 | Laura Heltebran | Common Stock | A | 20,444 | $0.00 | 20,444 | D | A |
| 01 Apr, 2025 | Charles Masters | Common Stock | A | 4,402 | $0.00 | 32,392 | D | A |