BioAtla's top three insider shareholders as of April 17, 2026 are Jay M Phd Short (Chief Executive Officer, 2.66Mn shares), Guy Levy (Director, 1.12Mn shares), Jay M Phd Short (Chief Executive Officer, 793.55K shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Jay M Phd Short | Chief Executive Officer | 2,659,603 | 0 | 12 Mar, 2026 |
| Guy Levy | - | 0 | 1,115,817 | 30 Sep, 2021 |
| Jay M Phd Short | Chief Executive Officer | 0 | 793,547 | 25 Aug, 2021 |
| Eric Sievers | Chief Medical Officer | 598,705 | 0 | 12 Mar, 2026 |
| Christian Vasquez | Chief Financial Officer | 530,196 | 0 | 12 Mar, 2026 |
| Richard A Waldron | Former Chief Financial Officer | 343,421 | 0 | 02 Mar, 2026 |
| Scott Andrew Smith | Former President | 321,550 | 0 | 18 Jun, 2025 |
| Lawrence Steinman | - | 78,459 | 0 | 18 Jun, 2025 |
| Eddie Williams | - | 60,200 | 0 | 18 Jun, 2025 |
| Sylvia Mcbrinn | - | 59,125 | 0 | 18 Jun, 2025 |
| Susan Moran | - | 52,307 | 0 | 18 Jun, 2025 |
* 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 Mar, 2026 | Christian Vasquez | Common Stock | A | 240,000 | $0.00 | 530,196 | D | A |
| 11 Mar, 2026 | Jay M Phd Short | Common Stock | A | 430,000 | $0.00 | 2,659,603 | D | A |
| 10 Mar, 2026 | Eric Sievers | Common Stock | A | 240,000 | $0.00 | 598,705 | D | A |
| 28 Feb, 2026 | Jay M Phd Short | Common Stock | D | 7,728 | $0.25 | 2,229,603 | D | F |
| 28 Feb, 2026 | Richard A Waldron | Common Stock | D | 2,729 | $0.25 | 343,421 | D | F |
| 28 Feb, 2026 | Eric Sievers | Common Stock | D | 3,140 | $0.25 | 358,705 | D | F |
| 28 Feb, 2026 | Christian Vasquez | Common Stock | D | 1,802 | $0.25 | 290,196 | D | F |
| 30 Nov, 2025 | Eric Sievers | Common Stock | D | 2,729 | $0.90 | 361,845 | D | F |
| 30 Nov, 2025 | Jay M Phd Short | Common Stock | D | 6,347 | $0.90 | 2,237,331 | D | F |
| 30 Nov, 2025 | Christian Vasquez | Common Stock | D | 1,566 | $0.90 | 291,998 | D | F |
| 30 Nov, 2025 | Richard A Waldron | Common Stock | D | 2,371 | $0.90 | 346,150 | D | F |
| 31 Aug, 2025 | Jay M Phd Short | Common Stock | D | 6,347 | $0.46 | 2,243,678 | D | F |
| 31 Aug, 2025 | Christian Vasquez | Common Stock | D | 1,566 | $0.46 | 283,564 | D | F |
| 31 Aug, 2025 | Eric Sievers | Common Stock | D | 2,729 | $0.46 | 364,574 | D | F |
| 31 Aug, 2025 | Richard A Waldron | Common Stock | D | 2,371 | $0.46 | 338,521 | D | F |
| 18 Jun, 2025 | Eddie Williams | Common Stock | A | 23,500 | $0.00 | 60,200 | D | A |
| 18 Jun, 2025 | Susan Moran | Common Stock | A | 23,500 | $0.00 | 52,307 | D | A |
| 18 Jun, 2025 | Lawrence Steinman | Common Stock | A | 23,500 | $0.00 | 78,459 | D | A |
| 18 Jun, 2025 | Mary Ann Gray | Common Stock | A | 23,500 | $0.00 | 77,397 | D | A |
| 18 Jun, 2025 | Scott Andrew Smith | Common Stock | A | 23,500 | $0.00 | 321,550 | D | A |