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 3, 2023 | Tang Kevin C | Director, 10% Owner | Tender(U) | 5.3M | $1.85 | $9.8M |
| May 3, 2023 | Tang Kevin C | Director, 10% Owner | Other(J) | 10K | $9,737.70 | $97.4M |
| May 3, 2023 | Concentra Biosciences, LLC | 10% Owner | Other(J) | 10K | $9,737.70 | $97.4M |
| May 3, 2023 | Diaz Luis | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Diaz Luis | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Diaz Luis | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Diaz Luis | Director | Disposed to issuer(D) | 10K | — | — |
| May 3, 2023 | Diaz Luis | Director | Disposed to issuer(D) | 27K | — | — |
| May 3, 2023 | Diaz Luis | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Tender(U) | 40K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Tender(U) | 26K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 8K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 77K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 98K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 45K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 53K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 45K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 206K | — | — |
| May 3, 2023 | Drapkin Kimberlee C | President, CFO and Treasurer | Disposed to issuer(D) | 55K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 14K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 34K | — | — |
| May 3, 2023 | Duncan Barbara Gayle | Director | Disposed to issuer(D) | 11K | — | — |
| May 3, 2023 | Iannone Robert | Director | Disposed to issuer(D) | 31K | — | — |
| May 3, 2023 | Iannone Robert | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Iannone Robert | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Iannone Robert | Director | Disposed to issuer(D) | 8K | — | — |
| May 3, 2023 | Kamen Robert | Director | Tender(U) | 61K | — | — |
| May 3, 2023 | Kamen Robert | Director | Tender(U) | 34K | — | — |
| May 3, 2023 | Kamen Robert | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Kamen Robert | Director | Disposed to issuer(D) | 14K | — | — |
| May 3, 2023 | Kamen Robert | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Kamen Robert | Director | Disposed to issuer(D) | 11K | — | — |
| May 3, 2023 | Kamen Robert | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Kamen Robert | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Tender(U) | 5K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 13K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 16K | — | — |
| May 3, 2023 | Karsen Perry A | Director | Disposed to issuer(D) | 76K | — | — |
| May 3, 2023 | Murray Richard | Director | Tender(U) | 189K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 54K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 183K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 200K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 125K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 166K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 665K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 150K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 15K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 175K | — | — |
| May 3, 2023 | Murray Richard | Director | Disposed to issuer(D) | 150K | — | — |
| May 3, 2023 | Raythatha Jigar | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Raythatha Jigar | Director | Disposed to issuer(D) | 31K | — | — |
| May 3, 2023 | Salter-Cid Luisa | Director | Disposed to issuer(D) | 8K | — | — |
| May 3, 2023 | Salter-Cid Luisa | Director | Disposed to issuer(D) | 20K | — | — |
| May 3, 2023 | Salter-Cid Luisa | Director | Disposed to issuer(D) | 31K | — | — |
| Apr 4, 2023 | Murray Richard | Director | Sell(S) | 39K | $1.85 | $73K |
| Mar 14, 2023 | Tang Capital Management LLC | 10% Owner | Buy(P) | 20K | $1.02 | $21K |
| Mar 13, 2023 | Tang Capital Management LLC | 10% Owner | Buy(P) | 66K | $0.99 | $65K |
| Jan 10, 2023 | Cole Hugh M | Chief Operating Officer | Sell(S) | 9K | $1.12 | $10K |
| Jan 10, 2023 | Drapkin Kimberlee C | CFO and Treasurer | Sell(S) | 8K | $1.12 | $9K |
| Jan 10, 2023 | Murray Richard | CEO and President, Director | Sell(S) | 25K | $1.12 | $28K |
| Jan 10, 2023 | Trehu Elizabeth | Chief Medical Officer | Sell(S) | 5K | $1.12 | $6K |
| Jan 9, 2023 | Cole Hugh M | Chief Operating Officer | Sell(S) | 7K | $1.10 | $8K |
| Jan 9, 2023 | Drapkin Kimberlee C | CFO and Treasurer | Sell(S) | 6K | $1.10 | $7K |
| Jan 9, 2023 | Murray Richard | CEO and President, Director | Sell(S) | 20K | $1.10 | $22K |
| Jan 9, 2023 | Trehu Elizabeth | Chief Medical Officer | Sell(S) | 4K | $1.10 | $5K |
| Aug 1, 2022 | Cole Hugh M | Chief Operating Officer | Grant(A) | 20K | — | $0 |
| Aug 1, 2022 | Cole Hugh M | Chief Operating Officer | Grant(A) | 40K | — | $0 |
| Jun 24, 2022 | Diaz Luis | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Duncan Barbara Gayle | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Higgons John Duncan | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Iannone Robert | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Kamen Robert | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Karsen Perry A | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Raythatha Jigar | Director | Grant(A) | 20K | — | $0 |
| Jun 24, 2022 | Salter-Cid Luisa | Director | Grant(A) | 20K | — | $0 |
| Feb 1, 2022 | Trehu Elizabeth | Chief Medical Officer | Grant(A) | 28K | — | $0 |
| Feb 1, 2022 | Trehu Elizabeth | Chief Medical Officer | Grant(A) | 55K | — | $0 |
| Feb 1, 2022 | Murray Richard | CEO and President, Director | Grant(A) | 88K | — | $0 |
| Feb 1, 2022 | Murray Richard | CEO and President, Director | Grant(A) | 175K | — | $0 |
| Feb 1, 2022 | Drapkin Kimberlee C | CFO and Treasurer | Grant(A) | 28K | — | $0 |
| Feb 1, 2022 | Drapkin Kimberlee C | CFO and Treasurer | Grant(A) | 55K | — | $0 |
| Feb 1, 2022 | Cole Hugh M | Chief Business Officer | Grant(A) | 85K | — | $0 |
| Jan 10, 2022 | Cole Hugh M | Chief Business Officer | Sell(S) | 6K | $6.65 | $41K |
| Jan 10, 2022 | Drapkin Kimberlee C | CFO and Treasurer | Sell(S) | 8K | $6.65 | $55K |
| Jan 10, 2022 | Murray Richard | CEO and President, Director | Sell(S) | 24K | $6.65 | $159K |
| Jan 10, 2022 | Trehu Elizabeth | Chief Medical Officer | Sell(S) | 5K | $6.65 | $36K |
| Jan 7, 2022 | Cole Hugh M | Chief Business Officer | Sell(S) | 3K | $7.30 | $25K |
| Jan 7, 2022 | Drapkin Kimberlee C | CFO and Treasurer | Sell(S) | 5K | $7.30 | $34K |
| Jan 7, 2022 | Murray Richard | CEO and President, Director | Sell(S) | 13K | $7.30 | $98K |
| Jan 7, 2022 | Trehu Elizabeth | Chief Medical Officer | Sell(S) | 3K | $7.30 | $22K |
| Nov 12, 2021 | Pfeffer Cary | Director | Sell(S) | 0 | — | $0 |
| Nov 12, 2021 | TRV GP III, LLC | 10% Owner | Sell(S) | 1.9M | $8.38 | $15.9M |
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).