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 |
|---|---|---|---|---|---|---|
| Oct 9, 2025 | BVF Inc | 10% Owner | Tender(U) | 6.2M | — | — |
| Oct 9, 2025 | BVF Inc | 10% Owner | Tender(U) | 561K | — | — |
| Oct 9, 2025 | BVF Inc | 10% Owner | Tender(U) | 4.7M | — | — |
| Oct 9, 2025 | Thorell Marella | Director | Disposed to issuer(D) | 3K | — | — |
| Oct 9, 2025 | Martin John Alexander | Director | Disposed to issuer(D) | 14K | — | — |
| Oct 9, 2025 | Requadt Scott | Director | Disposed to issuer(D) | 30K | — | — |
| Oct 9, 2025 | Glickman Richard M | Director | Disposed to issuer(D) | 43K | — | — |
| Oct 9, 2025 | Berger Franklin M | Director | Disposed to issuer(D) | 784K | — | — |
| Oct 9, 2025 | Wood David S. | Chief Financial Officer | Disposed to issuer(D) | 33K | — | — |
| Oct 9, 2025 | Parkinson David Ross | President and CEO, Director | Disposed to issuer(D) | 66K | — | — |
| Aug 5, 2025 | BVF Inc | 10% Owner | Sell(S) | 79 | $1.88 | $149 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Sell(S) | 11 | $1.88 | $21 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Sell(S) | 66 | $1.88 | $124 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Option exercise(X) | 1.5M | — | $0 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Option exercise(X) | 1.2M | — | $0 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Option exercise(X) | 203K | — | $0 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Option exercise(X) | 203K | — | $0 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Option exercise(X) | 1.2M | — | $0 |
| Aug 5, 2025 | BVF Inc | 10% Owner | Option exercise(X) | 1.5M | — | $0 |
| Nov 1, 2024 | BB Biotech AG | 10% Owner | Sell(S) | 2.0M | $1.53 | $3.1M |
| Nov 1, 2024 | BB Biotech AG | 10% Owner | Sell(S) | 2.0M | $1.53 | $3.1M |
| Nov 1, 2024 | BB Biotech AG | 10% Owner | Sell(S) | 1.9M | $1.51 | $2.8M |
| Nov 1, 2024 | BB Biotech AG | 10% Owner | Sell(S) | 2.0M | $1.53 | $3.1M |
| Oct 7, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 694 | $6.03 | $4K |
| Sep 9, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 694 | $6.00 | $4K |
| Sep 3, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 2K | $6.03 | $13K |
| May 6, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 694 | $6.95 | $5K |
| Apr 24, 2024 | Glickman Richard M | Director | Option exercise(M) | 4K | $4.90 | $18K |
| Apr 24, 2024 | Glickman Richard M | Director | Option exercise(M) | 4K | — | $0 |
| Apr 5, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 694 | $7.94 | $6K |
| Mar 25, 2024 | Cesano Alessandra | Chief Medical Officer | Grant(A) | 200K | — | $0 |
| Mar 25, 2024 | Parkinson David Ross | Chief Executive Officer, Director | Grant(A) | 350K | — | $0 |
| Mar 25, 2024 | Virsik Peter | Chief Operating Officer | Grant(A) | 110K | — | $0 |
| Mar 25, 2024 | Wood David S. | Chief Financial Officer | Grant(A) | 110K | — | $0 |
| Mar 25, 2024 | Berger Franklin M | Director | Grant(A) | 50K | — | $0 |
| Mar 25, 2024 | Glickman Richard M | Director | Grant(A) | 70K | — | $0 |
| Mar 25, 2024 | Kantoff Philip W. | Director | Grant(A) | 50K | — | $0 |
| Mar 25, 2024 | Martin John Alexander | Director | Grant(A) | 50K | — | $0 |
| Mar 25, 2024 | Merendino Lauren | Director | Grant(A) | 25K | — | $0 |
| Mar 25, 2024 | Requadt Scott | Director | Grant(A) | 50K | — | $0 |
| Mar 25, 2024 | Sollis Gary | Director | Grant(A) | 50K | — | $0 |
| Mar 25, 2024 | Thorell Marella | Director | Grant(A) | 50K | — | $0 |
| Mar 25, 2024 | Zweifach Sanford S | Director | Grant(A) | 50K | — | $0 |
| Mar 5, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 694 | $8.98 | $6K |
| Feb 6, 2024 | Virsik Peter | Chief Operating Officer | Option exercise(M) | 73K | $3.23 | $235K |
| Feb 6, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 73K | $10.29 | $749K |
| Feb 6, 2024 | Virsik Peter | Chief Operating Officer | Option exercise(M) | 73K | — | $0 |
| Feb 5, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 500 | $10.04 | $5K |
| Feb 5, 2024 | Virsik Peter | Chief Operating Officer | Option exercise(M) | 500 | $3.23 | $2K |
| Feb 5, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 694 | $9.25 | $6K |
| Feb 5, 2024 | Virsik Peter | Chief Operating Officer | Option exercise(M) | 500 | — | $0 |
| Jan 16, 2024 | Virsik Peter | Chief Operating Officer | Option exercise(M) | 2K | $3.23 | $6K |
| Jan 16, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 2K | $10.01 | $17K |
| Jan 16, 2024 | Virsik Peter | Chief Operating Officer | Option exercise(M) | 2K | — | $0 |
| Jan 5, 2024 | Virsik Peter | Chief Operating Officer | Sell(S) | 699 | $6.11 | $4K |
| Dec 14, 2023 | Parkinson David Ross | Chief Executive Officer, Director | Buy(P) | 9K | $2.30 | $21K |
| Nov 21, 2023 | Berger Franklin M | Director | Buy(P) | 23K | $5.73 | $133K |
| Nov 6, 2023 | Requadt Scott | Director | Other(J) | 13K | — | $0 |
| Nov 3, 2023 | Berger Franklin M | Director | Buy(P) | 16K | $5.99 | $99K |
| Nov 2, 2023 | Berger Franklin M | Director | Buy(P) | 60K | $5.35 | $321K |
| Oct 30, 2023 | Requadt Scott | Director | Other(J) | 18K | — | $0 |
| Oct 24, 2023 | Wood David S. | Chief Financial Officer | Grant(A) | 4K | — | $0 |
| Dec 30, 2022 | Wood David S. | Chief Financial Officer | Buy(P) | 8K | $2.60 | $22K |
| Dec 30, 2022 | Parkinson David Ross | Chief Executive Officer, Director | Buy(P) | 3K | $2.60 | $8K |
| Dec 22, 2022 | Parkinson David Ross | Chief Executive Officer, Director | Buy(P) | 21K | $2.39 | $51K |
| Dec 21, 2022 | Berger Franklin M | Director | Sell(S) | 38K | $2.41 | $91K |
| Dec 21, 2022 | Berger Franklin M | Director | Sell(S) | 34K | $2.42 | $83K |
| Dec 20, 2022 | Berger Franklin M | Director | Sell(S) | 44K | $2.53 | $110K |
| Dec 16, 2022 | Berger Franklin M | Director | Sell(S) | 50K | $2.67 | $134K |
| Dec 15, 2022 | Berger Franklin M | Director | Sell(S) | 50K | $2.86 | $143K |
| Dec 15, 2022 | Berger Franklin M | Director | Sell(S) | 32K | $2.90 | $93K |
| Dec 14, 2022 | Berger Franklin M | Director | Sell(S) | 25K | $3.00 | $75K |
| Oct 27, 2022 | Biotech Growth N V | 10% Owner | Buy(P) | 500K | $4.50 | $2.3M |
| Oct 26, 2022 | Biotech Growth N V | 10% Owner | Buy(P) | 1.5M | $3.98 | $6.0M |
| Jul 18, 2022 | BB Biotech AG | 10% Owner | Buy(P) | 300K | $3.16 | $948K |
| Jul 15, 2022 | Biotech Growth N V | 10% Owner | Buy(P) | 242K | $3.13 | $756K |
| Jul 14, 2022 | Biotech Growth N V | 10% Owner | Buy(P) | 347K | $2.79 | $969K |
| Jun 30, 2022 | Parkinson David Ross | Chief Executive Officer, Director | Buy(P) | 5K | $2.96 | $14K |
| Jun 29, 2022 | Zweifach Sanford S | Director | Grant(A) | 23K | — | $0 |
| Jun 29, 2022 | Wood David S. | Chief Financial Officer | Grant(A) | 90K | — | $0 |
| Jun 29, 2022 | Virsik Peter | Chief Operating Officer | Grant(A) | 90K | — | $0 |
| Jun 29, 2022 | Thorell Marella | Director | Grant(A) | 23K | — | $0 |
| Jun 29, 2022 | Sollis Gary | Director | Grant(A) | 23K | — | $0 |
| Jun 29, 2022 | Requadt Scott | Director | Grant(A) | 23K | — | $0 |
| Jun 29, 2022 | Parkinson David Ross | Chief Executive Officer, Director | Grant(A) | 223K | — | $0 |
| Jun 29, 2022 | Martin John Alexander | Director | Grant(A) | 23K | — | $0 |
| Jun 29, 2022 | Glickman Richard M | Director | Grant(A) | 35K | — | $0 |
| Jun 29, 2022 | Cesano Alessandra | Chief Medical Officer | Grant(A) | 90K | — | $0 |
| Jun 29, 2022 | Berger Franklin M | Director | Grant(A) | 23K | — | $0 |
| Apr 27, 2022 | BB Biotech AG | 10% Owner | Sell(S) | 25K | $5.85 | $147K |
| Aug 18, 2021 | Biotech Growth N V | 10% Owner | Buy(P) | 250K | $8.88 | $2.2M |
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).