As of June 12, 2026, the three largest insider holders of ANTX are Capital Management, L.P. Ra (TenPercentOwner, 5.14Mn shares), Capital Management, L.P. Ra (TenPercentOwner, 3.77Mn shares), Braden Michael Leonard (TenPercentOwner, 3.02Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Joseph S Zakrzewski | - | 0 | 405,880 | 19 Jan, 2024 |
| Capital Management, L.P. Ra | - | 0 | 5,135,683 | 22 Aug, 2023 |
| Braden Michael Leonard | - | 0 | 3,017,432 | 16 Jun, 2025 |
| Sanjay Chanda | Chief Development Officer | 118,823 | 0 | 23 Feb, 2026 |
| Global Health Technology Fund, L.P. Adjuvant | - | 1,995,958 | 377,542 | 18 Jan, 2024 |
| Margaret M Fitzpatrick | - | 8,610 | 0 | 29 May, 2025 |
| Eric Easom | Chief Executive Officer | 0 | 1,065,766 | 18 Nov, 2024 |
| Lucy Day | Chief Financial Officer | 118,363 | 0 | 23 Feb, 2026 |
| Paul Eckburg | Chief Medical Officer | 51,416 | 0 | 18 Mar, 2024 |
| Kabeer Aziz | - | 0 | 2,473,500 | 16 Nov, 2023 |
| Robin Shane Readnour | - | 0 | 652,573 | 10 Dec, 2024 |
| Patricia A. Martin | - | 18,097 | 0 | 10 Apr, 2026 |
| Kevin Michael Krause | Chief Strategy Officer | 31,914 | 0 | 29 Mar, 2024 |
| Gilbert Lynn Marks | - | 79,084 | 0 | 10 Apr, 2026 |
| Joshua M Eizen | Chief Legal Officer | 207,499 | 0 | 23 Feb, 2026 |
| Stephen David Prior | Chief Strategy Officer | 59,086 | 0 | 07 Jan, 2026 |
| Sarah Joanne Williams | Principal Accounting Officer | 66,848 | 0 | 05 Mar, 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 |
|---|---|---|---|---|---|---|---|---|
| 10 Apr, 2026 | Patricia A. Martin | Common Stock | A | 1,192 | $0.00 | 18,097 | D | A |
| 10 Apr, 2026 | Gilbert Lynn Marks | Common Stock | A | 3,775 | $0.00 | 79,084 | D | A |
| 10 Apr, 2026 | Kabeer Aziz | Common Stock | A | 3,775 | $0.00 | 56,254 | D | A |
| 10 Apr, 2026 | Kabeer Aziz | Common Stock | A | 3,775 | $0.00 | 56,254 | D | A |
| 10 Apr, 2026 | Gilbert Lynn Marks | Common Stock | A | 3,775 | $0.00 | 79,084 | D | A |
| 19 Mar, 2026 | Robin Shane Readnour | Stock Option (right to buy) | A | 20,724 | - | 20,724 | D | A |
| 19 Mar, 2026 | Gilbert Lynn Marks | Stock Option (right to buy) | A | 10,665 | - | 10,665 | D | A |
| 19 Mar, 2026 | Sanjay Chanda | Stock Option (right to buy) | A | 66,000 | - | 66,000 | D | A |
| 19 Mar, 2026 | Joseph S Zakrzewski | Stock Option (right to buy) | A | 99,999 | - | 99,999 | D | A |
| 19 Mar, 2026 | Melvin K Spigelman | Stock Option (right to buy) | A | 16,941 | - | 16,941 | D | A |
| 19 Mar, 2026 | Sanjay Chanda | Stock Option (right to buy) | A | 66,000 | - | 66,000 | D | A |
| 19 Mar, 2026 | Lucy Day | Stock Option (right to buy) | A | 73,665 | - | 73,665 | D | A |
| 19 Mar, 2026 | Gilbert Lynn Marks | Stock Option (right to buy) | A | 10,665 | - | 10,665 | D | A |
| 19 Mar, 2026 | Eric Easom | Stock Option (right to buy) | A | 249,999 | - | 249,999 | D | A |
| 19 Mar, 2026 | Kabeer Aziz | Stock Option (right to buy) | A | 20,724 | - | 20,724 | D | A |
| 19 Mar, 2026 | Kabeer Aziz | Stock Option (right to buy) | A | 20,724 | - | 20,724 | D | A |
| 19 Mar, 2026 | Robin Shane Readnour | Stock Option (right to buy) | A | 20,724 | - | 20,724 | D | A |
| 19 Mar, 2026 | Melvin K Spigelman | Stock Option (right to buy) | A | 16,941 | - | 16,941 | D | A |
| 19 Mar, 2026 | Joshua M Eizen | Stock Option (right to buy) | A | 92,000 | - | 92,000 | D | A |
| 19 Mar, 2026 | Stephanie Wong | Stock Option (right to buy) | A | 24,999 | - | 24,999 | D | A |