ABSI's three largest insider shareholders as of March 23, 2026 are Venture Partners Ii Lp Phoenix (TenPercentOwner, 11.28Mn shares), Sean Mcclain (Chief Executive Officer, 8.72Mn shares), Group, Llc Redmile (Director, 8.26Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Venture Partners Ii Lp Phoenix | 11,279,522 | 0 | 28 May, 2024 | |
| Sean Mcclain | Chief Executive Officer | 8,715,451 | 0 | 16 Mar, 2026 |
| Group, Llc Redmile | 0 | 8,262,136 | 14 Jun, 2024 | |
| Partners Master Fund, L.P. Casdin | 6,745,333 | 973,260 | 28 Jul, 2021 | |
| Eli Casdin | 0 | 973,260 | 28 Jul, 2021 | |
| Andreas Pihl | Chief Operating Officer | 607,937 | 0 | 28 Jul, 2021 |
| Gregory T Schiffman | Chief Financial Officer | 605,165 | 0 | 24 Oct, 2022 |
| Zachariah Jonasson | Cfo / Cbo | 499,783 | 0 | 16 Mar, 2026 |
| Andreas Busch | Chief Innovation Officer | 421,446 | 0 | 16 Mar, 2026 |
| Todd Bedrick | Svp, Cao | 216,942 | 0 | 16 Mar, 2026 |
| Menelas N Pangalos | 194,855 | 0 | 05 Mar, 2026 | |
| Shelby J. Walker | Chief Legal Officer | 139,775 | 0 | 16 Mar, 2026 |
| Houten Frans Van | 63,320 | 0 | 09 Dec, 2025 | |
| Karen K Mcginnis | 38,320 | 0 | 12 Jun, 2025 | |
| Joseph Sirosh | 23,320 | 0 | 12 Jun, 2025 | |
| Daniel A Rabinovitsj | 23,320 | 0 | 12 Jun, 2025 | |
| Sarah Korman | General Counsel | 14,250 | 0 | 10 Feb, 2022 |
| Amrit Nagpal | 8,820 | 0 | 14 Jun, 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 |
|---|---|---|---|---|---|---|---|---|
| 02 Mar, 2026 | Shelby J. Walker | Common Stock | A | 90,300 | $0.00 | 149,600 | D | A |
| 02 Mar, 2026 | Todd Bedrick | Common Stock | A | 49,600 | $0.00 | 222,224 | D | A |
| 12 Mar, 2026 | Andreas Busch | Common Stock | A | 100,000 | $2.29 | 421,446 | D | P |
| 02 Mar, 2026 | Sean Mcclain | Common Stock | A | 406,200 | $0.00 | 8,740,767 | D | A |
| 02 Mar, 2026 | Zachariah Jonasson | Common Stock | A | 135,400 | $0.00 | 510,631 | D | A |
| 03 Mar, 2026 | Shelby J. Walker | Common Stock | D | 9,825 | $2.80 | 139,775 | D | F |
| 03 Mar, 2026 | Todd Bedrick | Common Stock | D | 5,282 | $2.80 | 216,942 | D | F |
| 03 Mar, 2026 | Sean Mcclain | Common Stock | D | 25,316 | $2.80 | 8,715,451 | D | F |
| 03 Mar, 2026 | Zachariah Jonasson | Common Stock | D | 10,848 | $2.80 | 499,783 | D | F |
| 02 Mar, 2026 | Shelby J. Walker | Stock Option (right to buy) | A | 356,300 | $0.00 | 356,300 | D | A |
| 02 Mar, 2026 | Zachariah Jonasson | Stock Option (right to buy) | A | 534,400 | $0.00 | 534,400 | D | A |
| 02 Mar, 2026 | Sean Mcclain | Stock Option (right to buy) | A | 1,603,200 | $0.00 | 1,603,200 | D | A |
| 02 Mar, 2026 | Todd Bedrick | Stock Option (right to buy) | A | 195,900 | $0.00 | 195,900 | D | A |
| 02 Mar, 2026 | Menelas N Pangalos | Common Stock | A | 5,800 | $0.00 | 194,855 | D | A |
| 02 Mar, 2026 | Menelas N Pangalos | Stock Option (right to buy) | A | 22,800 | $0.00 | 22,800 | D | A |
| 02 Mar, 2026 | Todd Bedrick | Common Stock | A | 49,600 | $0.00 | 222,224 | D | A |
| 02 Mar, 2026 | Zachariah Jonasson | Common Stock | A | 135,400 | $0.00 | 510,631 | D | A |
| 02 Mar, 2026 | Shelby J. Walker | Common Stock | A | 90,300 | $0.00 | 149,600 | D | A |
| 02 Mar, 2026 | Sean Mcclain | Common Stock | A | 406,200 | $0.00 | 8,740,767 | D | A |
| 03 Mar, 2026 | Andreas Busch | Common Stock | D | 1,257 | $2.80 | 321,446 | D | F |