The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 1.2M | — | $0 |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 125K | — | $0 |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 88K | — | $0 |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 145K | — | $0 |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 486K | — | $0 |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 300K | — | $0 |
| May 15, 2025 | Biotechnology Value Fund II LP | Insider | Disposed to issuer(D) | 855K | — | — |
| May 15, 2025 | Biotechnology Value Fund II LP | Insider | Disposed to issuer(D) | 8.7M | — | — |
| May 15, 2025 | Biotechnology Value Fund II LP | Insider | Disposed to issuer(D) | 6.8M | — | — |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 3.4M | — | — |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 2.8M | — | — |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 100K | — | $0 |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 41K | — | $0 |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 87K | — | $0 |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 8K | — | $0 |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 8K | — | $0 |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 16K | — | $0 |
| May 15, 2025 | Walker Paul Edward | Director | Disposed to issuer(D) | 38K | — | $0 |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 320K | — | — |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 738K | — | — |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 307K | — | $0 |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 290K | — | $0 |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 2.0M | — | $0 |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 462K | — | $0 |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 250K | — | $0 |
| May 15, 2025 | Alexander Robert | Chief Executive Officer, Director | Disposed to issuer(D) | 913K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 41K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 87K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 100K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 8K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 8K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 16K | — | $0 |
| May 15, 2025 | Andreatta Robert E | Director | Disposed to issuer(D) | 38K | — | $0 |
| May 15, 2025 | Graham Neil Murray Hamilton | Director | Disposed to issuer(D) | 155K | — | $0 |
| May 15, 2025 | Graham Neil Murray Hamilton | Director | Disposed to issuer(D) | 41K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 41K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 87K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 100K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 8K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 8K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 16K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 19K | — | $0 |
| May 15, 2025 | James Steven P | Director | Disposed to issuer(D) | 55K | — | $0 |
| May 15, 2025 | Ladd Amy L | Director | Disposed to issuer(D) | 233K | — | $0 |
| May 15, 2025 | Ladd Amy L | Director | Disposed to issuer(D) | 41K | — | $0 |
| May 15, 2025 | Ladd Amy L | Director | Disposed to issuer(D) | 87K | — | $0 |
| May 15, 2025 | Radford Harlan Baird | Chief Financial Officer | Disposed to issuer(D) | 163K | — | — |
| May 15, 2025 | Radford Harlan Baird | Chief Financial Officer | Disposed to issuer(D) | 28K | — | $0 |
| May 15, 2025 | Radford Harlan Baird | Chief Financial Officer | Disposed to issuer(D) | 194K | — | $0 |
| May 15, 2025 | Thomas Dolca | Director | Disposed to issuer(D) | 41K | — | $0 |
| May 15, 2025 | Thomas Dolca | Director | Disposed to issuer(D) | 155K | — | $0 |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 513K | — | — |
| May 15, 2025 | Tomasi Adam | President | Disposed to issuer(D) | 21K | — | — |
| Mar 6, 2025 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 31K | $0.26 | $8K |
| Mar 5, 2025 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 14K | $0.26 | $4K |
| Mar 5, 2025 | Tomasi Adam | President | Tax withholding(F) | 20K | $0.26 | $5K |
| Dec 6, 2024 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 13K | $1.10 | $14K |
| Dec 6, 2024 | Tomasi Adam | President | Tax withholding(F) | 21K | $1.10 | $23K |
| Dec 5, 2024 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 32K | $1.10 | $36K |
| Dec 4, 2024 | Lee Chin Hyok | Chief Medical Officer | Tax withholding(F) | 11K | $1.13 | $12K |
| Sep 11, 2024 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 37K | $0.58 | $22K |
| Sep 9, 2024 | Lee Chin Hyok | Chief Medical Officer | Tax withholding(F) | 45K | $0.65 | $29K |
| Sep 6, 2024 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 14K | $0.65 | $9K |
| Sep 6, 2024 | Tomasi Adam | President | Tax withholding(F) | 22K | $0.65 | $14K |
| Jun 28, 2024 | Radford Harlan Baird | Chief Financial Officer | Sell(S) | 87K | $1.01 | $88K |
| Jun 7, 2024 | Tomasi Adam | President | Tax withholding(F) | 25K | $1.12 | $28K |
| Jun 6, 2024 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 38K | $1.14 | $43K |
| Jun 4, 2024 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 15K | $1.19 | $17K |
| May 24, 2024 | Thomas Dolca | Director | Grant(A) | 41K | — | $0 |
| May 24, 2024 | James Steven P | Director | Grant(A) | 41K | — | $0 |
| May 24, 2024 | Andreatta Robert E | Director | Grant(A) | 41K | — | $0 |
| May 24, 2024 | Graham Neil Murray Hamilton | Director | Grant(A) | 41K | — | $0 |
| May 24, 2024 | Ladd Amy L | Director | Grant(A) | 41K | — | $0 |
| May 24, 2024 | Walker Paul Edward | Director | Grant(A) | 41K | — | $0 |
| Mar 6, 2024 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 32K | $1.35 | $43K |
| Mar 5, 2024 | Tomasi Adam | President | Tax withholding(F) | 47K | $1.44 | $68K |
| Mar 4, 2024 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 71K | $1.48 | $105K |
| Feb 16, 2024 | Lee Chin Hyok | Chief Medical Officer | Grant(A) | 500K | — | $0 |
| Feb 16, 2024 | Alexander Robert | Chief Executive Officer, Director | Grant(A) | 2.0M | — | $0 |
| Feb 16, 2024 | Tomasi Adam | President | Grant(A) | 1.2M | — | $0 |
| Feb 16, 2024 | Radford Harlan Baird | Chief Financial Officer | Grant(A) | 900K | — | $0 |
| Dec 4, 2023 | Paterson Craig A. | Chief Medical Officer | Tax withholding(F) | 7K | $2.50 | $17K |
| Dec 4, 2023 | Tomasi Adam | President | Tax withholding(F) | 16K | $2.50 | $40K |
| Dec 4, 2023 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 25K | $2.50 | $62K |
| Dec 4, 2023 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 8K | $2.50 | $21K |
| Sep 5, 2023 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 28K | $3.01 | $85K |
| Sep 5, 2023 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 10K | $3.01 | $29K |
| Sep 5, 2023 | Tomasi Adam | President | Tax withholding(F) | 18K | $3.01 | $55K |
| Sep 5, 2023 | Paterson Craig A. | Chief Medical Officer | Tax withholding(F) | 8K | $3.01 | $24K |
| Aug 28, 2023 | Graham Neil Murray Hamilton | Director | Grant(A) | 155K | — | $0 |
| Aug 16, 2023 | Alta Partners Management VIII, LLC | 10% Owner | Other(J) | 6.4M | — | $0 |
| Aug 16, 2023 | Alta Partners Management VIII, LLC | 10% Owner | Other(J) | 1.5M | — | $0 |
| Aug 16, 2023 | Alta Partners Management VIII, LLC | 10% Owner | Other(J) | 1.5M | — | $0 |
| Aug 1, 2023 | Sutherland Everett Rand | Director | Grant(A) | 155K | — | $0 |
| Aug 1, 2023 | Thomas Dolca | Director | Grant(A) | 155K | — | $0 |
| Jun 2, 2023 | Paterson Craig A. | Chief Medical Officer | Tax withholding(F) | 7K | $5.13 | $38K |
| Jun 2, 2023 | Tomasi Adam | President | Tax withholding(F) | 17K | $5.13 | $88K |
| Jun 2, 2023 | Radford Harlan Baird | Chief Financial Officer | Tax withholding(F) | 9K | $5.13 | $46K |
| Jun 2, 2023 | Alexander Robert | Chief Executive Officer, Director | Tax withholding(F) | 26K | $5.13 | $136K |
| May 25, 2023 | Andreatta Robert E | Director | Grant(A) | 87K | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2021-03-29 → 2026-07-14. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).