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 |
|---|---|---|---|---|---|---|
| Aug 11, 2025 | Bonita David P | Director | Other(J) | 5.8M | — | — |
| Aug 11, 2025 | Bonita David P | Director | Other(J) | 44K | — | $0 |
| Aug 11, 2025 | Soloway Thomas P | Director | Other(J) | 120K | — | $0 |
| Aug 11, 2025 | Seidel Hans Martin | Director | Other(J) | 86K | — | — |
| Aug 11, 2025 | Seidel Hans Martin | Director | Other(J) | 53K | — | $0 |
| Aug 11, 2025 | Iwicki Mark T | Director | Other(J) | 129K | — | — |
| Aug 11, 2025 | Iwicki Mark T | Director | Other(J) | 83K | — | $0 |
| Aug 11, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | Other(J) | 48K | — | $0 |
| Aug 11, 2025 | Gladstone Michael | Director, 10% Owner | Other(J) | 44K | — | $0 |
| Aug 11, 2025 | Holles Natalie C. | CEO, Director | Other(J) | 1.2M | — | — |
| Aug 11, 2025 | Holles Natalie C. | CEO, Director | Other(J) | 999K | — | $0 |
| Aug 11, 2025 | Holles Natalie C. | CEO, Director | Other(J) | 50K | — | $0 |
| Mar 1, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | Grant(A) | 30K | — | $0 |
| Jan 15, 2025 | Holles Natalie C. | CEO, Director | Grant(A) | 400K | — | $0 |
| Jan 15, 2025 | Holles Natalie C. | CEO, Director | Grant(A) | 50K | — | $0 |
| Jan 15, 2025 | Dean Dennis | Chief Nonclinical Dev. Officer | Grant(A) | 92K | — | $0 |
| Jan 15, 2025 | Dean Dennis | Chief Nonclinical Dev. Officer | Grant(A) | 12K | — | $0 |
| Jan 15, 2025 | Dinsmore Christopher | Chief Scientific Officer | Grant(A) | 116K | — | $0 |
| Jan 15, 2025 | Dinsmore Christopher | Chief Scientific Officer | Grant(A) | 15K | — | $0 |
| Jan 15, 2025 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Grant(A) | 13K | — | $0 |
| Jan 15, 2025 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Grant(A) | 100K | — | $0 |
| Jan 15, 2025 | Conner Edward R. | Chief Medical Officer | Grant(A) | 132K | — | $0 |
| Jan 15, 2025 | Conner Edward R. | Chief Medical Officer | Grant(A) | 17K | — | $0 |
| Jan 15, 2025 | Dittman Jennifer | Chief Operating Officer | Grant(A) | 12K | — | $0 |
| Jan 15, 2025 | Dittman Jennifer | Chief Operating Officer | Grant(A) | 92K | — | $0 |
| Jan 15, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | Grant(A) | 140K | — | $0 |
| Jan 15, 2025 | Murphy Christopher M. | Chief Financial & Bus. Officer | Grant(A) | 18K | — | $0 |
| Nov 8, 2024 | Conner Edward R. | Chief Medical Officer | Sell(S) | 2K | $15.00 | $32K |
| Nov 8, 2024 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 2K | $4.20 | $9K |
| Nov 8, 2024 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 2K | — | $0 |
| Nov 1, 2024 | Atlas Venture Fund XI, L.P. | 10% Owner | Other(J) | 516K | — | $0 |
| Oct 29, 2024 | BVF Inc | Insider | Sell(S) | 65K | $14.30 | $924K |
| Oct 29, 2024 | BVF Inc | Insider | Sell(S) | 538K | $14.30 | $7.7M |
| Oct 29, 2024 | BVF Inc | Insider | Sell(S) | 397K | $14.30 | $5.7M |
| Oct 28, 2024 | Conner Edward R. | Chief Medical Officer | Sell(S) | 3K | $15.00 | $40K |
| Oct 28, 2024 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 3K | $4.20 | $11K |
| Oct 28, 2024 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 3K | — | $0 |
| Sep 19, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 9K | $4.20 | $40K |
| Sep 19, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Sell(S) | 9K | $14.29 | $136K |
| Sep 19, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 9K | — | $0 |
| Sep 19, 2024 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 5K | $4.20 | $20K |
| Sep 19, 2024 | Conner Edward R. | Chief Medical Officer | Sell(S) | 5K | $15.00 | $72K |
| Sep 19, 2024 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 5K | — | $0 |
| Sep 18, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 503 | $4.20 | $2K |
| Sep 18, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Sell(S) | 503 | $14.00 | $7K |
| Sep 18, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 503 | — | $0 |
| Jun 26, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Sell(S) | 10K | $12.46 | $125K |
| Jun 26, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 10K | $4.20 | $42K |
| Jun 26, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 10K | — | $0 |
| Jun 7, 2024 | Dittman Jennifer | Chief Development Oper Officer | Grant(A) | 494 | $4.20 | $2K |
| Jun 7, 2024 | Dittman Jennifer | Chief Development Oper Officer | Sell(S) | 494 | $14.17 | $7K |
| Jun 7, 2024 | Dittman Jennifer | Chief Development Oper Officer | Option exercise(M) | 494 | — | $0 |
| Jun 6, 2024 | Bonita David P | Director | Grant(A) | 20K | — | $0 |
| Jun 6, 2024 | Gladstone Michael | Director, 10% Owner | Grant(A) | 20K | — | $0 |
| Jun 6, 2024 | Soloway Thomas P | Director | Grant(A) | 20K | — | $0 |
| Jun 6, 2024 | Seidel Hans Martin | Director | Grant(A) | 20K | — | $0 |
| Jun 6, 2024 | Iwicki Mark T | Director | Grant(A) | 20K | — | $0 |
| May 20, 2024 | Dittman Jennifer | Chief Development Oper Officer | Grant(A) | 1K | $4.30 | $4K |
| May 20, 2024 | Dittman Jennifer | Chief Development Oper Officer | Sell(S) | 1K | $14.00 | $15K |
| May 20, 2024 | Dittman Jennifer | Chief Development Oper Officer | Option exercise(M) | 1K | — | $0 |
| May 16, 2024 | Dean Dennis | Chief Nonclinical Dev. Officer | Grant(A) | 210K | — | $0 |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | Grant(A) | 17K | $4.30 | $72K |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | Sell(S) | 24K | $14.04 | $331K |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | Grant(A) | 7K | $4.20 | $29K |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | Grant(A) | 100K | — | $0 |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | Option exercise(M) | 17K | — | $0 |
| May 16, 2024 | Dittman Jennifer | Chief Development Oper Officer | Option exercise(M) | 7K | — | $0 |
| May 16, 2024 | Dinsmore Christopher | Chief Scientific Officer | Grant(A) | 297K | — | $0 |
| May 9, 2024 | Holles Natalie C. | CEO, Director | Option exercise(M) | 20K | $4.20 | $85K |
| May 9, 2024 | Holles Natalie C. | CEO, Director | Sell(S) | 20K | $12.18 | $246K |
| May 9, 2024 | Holles Natalie C. | CEO, Director | Option exercise(M) | 20K | — | $0 |
| Apr 11, 2024 | Holles Natalie C. | CEO, Director | Sell(S) | 14K | $12.19 | $165K |
| Apr 11, 2024 | Holles Natalie C. | CEO, Director | Option exercise(M) | 14K | $4.20 | $57K |
| Apr 11, 2024 | Holles Natalie C. | CEO, Director | Option exercise(M) | 14K | — | $0 |
| Apr 4, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Sell(S) | 1K | $10.00 | $11K |
| Apr 4, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 1K | $4.20 | $5K |
| Apr 4, 2024 | Person Julie | CHIEF ADMINISTRATIVE OFFICER | Option exercise(M) | 1K | — | $0 |
| Mar 27, 2024 | McDonough Geoff | Director | Grant(A) | 60K | — | $0 |
| Jan 5, 2024 | Holles Natalie C. | CEO, Director | Grant(A) | 396K | — | $0 |
| Jan 5, 2024 | Murphy Christopher M. | Chief Financial & Bus. Officer | Grant(A) | 410K | — | $0 |
| Jan 5, 2024 | Conner Edward R. | Chief Medical Officer | Grant(A) | 133K | — | $0 |
| Jan 5, 2024 | Person Julie | Chief Administrative Officer | Grant(A) | 116K | — | $0 |
| Jan 5, 2024 | Holles Natalie C. | CEO, Director | Grant(A) | 396K | — | $0 |
| Dec 5, 2023 | Conner Edward R. | Chief Medical Officer | Sell(S) | 5K | $10.03 | $48K |
| Dec 5, 2023 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 5K | $4.20 | $20K |
| Dec 5, 2023 | Conner Edward R. | Chief Medical Officer | Option exercise(M) | 5K | — | $0 |
| Dec 5, 2023 | Person Julie | Chief Administrative Officer | Option exercise(M) | 13K | $4.20 | $54K |
| Dec 5, 2023 | Person Julie | Chief Administrative Officer | Sell(S) | 13K | $10.30 | $132K |
| Dec 5, 2023 | Person Julie | Chief Administrative Officer | Option exercise(M) | 13K | — | $0 |
| Jun 6, 2023 | Bonita David P | Director, 10% Owner | Grant(A) | 16K | — | $0 |
| Jun 6, 2023 | Gladstone Michael | Director | Grant(A) | 16K | — | $0 |
| Jun 6, 2023 | Iwicki Mark T | Director | Grant(A) | 16K | — | $0 |
| Jun 6, 2023 | Seidel Hans Martin | Director | Grant(A) | 16K | — | $0 |
| Jun 6, 2023 | Soloway Thomas P | Director | Grant(A) | 16K | — | $0 |
| Mar 6, 2023 | Ray Adrian S. | Chief Scientific Officer | Grant(A) | 95K | — | — |
| Mar 6, 2023 | Ray Adrian S. | Chief Scientific Officer | Grant(A) | 132K | — | $0 |
| Mar 6, 2023 | Ray Adrian S. | Chief Scientific Officer | Disposed to issuer(D) | 310K | — | — |
| Mar 6, 2023 | Ray Adrian S. | Chief Scientific Officer | Grant(A) | 310K | — | — |
| Mar 6, 2023 | Ray Adrian S. | Chief Scientific Officer | Disposed to issuer(D) | 95K | — | — |
| Mar 6, 2023 | Ho Robert | Chief Financial Officer | Grant(A) | 136K | — | $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).