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 31, 2026 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 134 | $3.93 | $527 |
| May 31, 2026 | Vasquez Christian | Chief Financial Officer | Tax withholding(F) | 82 | $3.93 | $322 |
| May 31, 2026 | Short Jay M PHD | Chief Executive Officer, Director | Tax withholding(F) | 259 | $3.93 | $1K |
| Mar 12, 2026 | Short Jay M PHD | Chief Executive Officer, Director | Tax withholding(F) | 639 | $0.17 | $107 |
| Mar 11, 2026 | Short Jay M PHD | Chief Executive Officer, Director | Grant(A) | 430K | — | $0 |
| Mar 11, 2026 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 360 | $0.17 | $61 |
| Mar 11, 2026 | Vasquez Christian | Chief Financial Officer | Tax withholding(F) | 175 | $0.17 | $30 |
| Mar 10, 2026 | Vasquez Christian | Chief Financial Officer | Grant(A) | 240K | — | $0 |
| Mar 10, 2026 | Sievers Eric | Chief Medical Officer | Grant(A) | 240K | — | $0 |
| Feb 28, 2026 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 3K | $0.25 | $785 |
| Feb 28, 2026 | Waldron Richard A | Former Chief Financial Officer | Tax withholding(F) | 3K | $0.25 | $682 |
| Feb 28, 2026 | Vasquez Christian | Chief Financial Officer | Tax withholding(F) | 2K | $0.25 | $451 |
| Feb 28, 2026 | Short Jay M PHD | Chief Executive Officer, Director | Tax withholding(F) | 8K | $0.25 | $2K |
| Nov 30, 2025 | Vasquez Christian | See Remarks | Tax withholding(F) | 2K | $0.90 | $1K |
| Nov 30, 2025 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 6K | $0.90 | $6K |
| Nov 30, 2025 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 3K | $0.90 | $2K |
| Nov 30, 2025 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 2K | $0.90 | $2K |
| Aug 31, 2025 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 2K | $0.46 | $1K |
| Aug 31, 2025 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 3K | $0.46 | $1K |
| Aug 31, 2025 | Vasquez Christian | See Remarks | Tax withholding(F) | 2K | $0.46 | $720 |
| Aug 31, 2025 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 6K | $0.46 | $3K |
| Jun 18, 2025 | Smith Scott Andrew | Director | Grant(A) | 24K | — | $0 |
| Jun 18, 2025 | McBrinn Sylvia | Director | Grant(A) | 24K | — | $0 |
| Jun 18, 2025 | Gray Mary Ann | Director | Grant(A) | 24K | — | $0 |
| Jun 18, 2025 | Steinman Lawrence | Director | Grant(A) | 24K | — | $0 |
| Jun 18, 2025 | Williams Eddie | Director | Grant(A) | 24K | — | $0 |
| Jun 18, 2025 | Moran Susan | Director | Grant(A) | 24K | — | $0 |
| May 31, 2025 | Vasquez Christian | See Remarks | Tax withholding(F) | 2K | $0.41 | $642 |
| May 31, 2025 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 3K | $0.41 | $1K |
| May 31, 2025 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 2K | $0.41 | $972 |
| May 31, 2025 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 6K | $0.41 | $3K |
| Mar 12, 2025 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Grant(A) | 431K | — | $0 |
| Mar 11, 2025 | Sievers Eric | Chief Medical Officer | Grant(A) | 175K | — | $0 |
| Mar 11, 2025 | Waldron Richard A | Chief Financial Officer | Grant(A) | 100K | — | $0 |
| Mar 11, 2025 | Vasquez Christian | See Remarks | Grant(A) | 85K | — | $0 |
| Feb 16, 2025 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 31K | $0.46 | $14K |
| Feb 15, 2025 | Vasquez Christian | See Remarks | Tax withholding(F) | 7K | $0.46 | $3K |
| Feb 15, 2025 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 11K | $0.46 | $5K |
| Feb 15, 2025 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 13K | $0.46 | $6K |
| Aug 31, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $1.77 | $1K |
| Aug 31, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.77 | $4K |
| Jul 31, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $1.81 | $1K |
| Jul 31, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.81 | $4K |
| Jun 30, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $1.37 | $784 |
| Jun 30, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.37 | $3K |
| Jun 13, 2024 | Moran Susan | Director | Grant(A) | 17K | — | $0 |
| Jun 13, 2024 | Williams Eddie | Director | Grant(A) | 17K | — | $0 |
| Jun 13, 2024 | Steinman Lawrence | Director | Grant(A) | 17K | — | $0 |
| Jun 13, 2024 | Smith Scott Andrew | Director | Grant(A) | 17K | — | $0 |
| Jun 13, 2024 | McBrinn Sylvia | Director | Grant(A) | 17K | — | $0 |
| Jun 13, 2024 | Gray Mary Ann | Director | Grant(A) | 17K | — | $0 |
| May 31, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $1.51 | $864 |
| May 31, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.51 | $3K |
| Apr 30, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $2.26 | $5K |
| Apr 30, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $2.26 | $1K |
| Mar 31, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $3.44 | $2K |
| Mar 31, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $3.44 | $8K |
| Feb 29, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 572 | $2.70 | $2K |
| Feb 29, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $2.70 | $6K |
| Feb 16, 2024 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Grant(A) | 417K | — | $0 |
| Feb 15, 2024 | Sievers Eric | Chief Medical Officer | Grant(A) | 122K | — | $0 |
| Feb 15, 2024 | Vasquez Christian | See Remarks | Grant(A) | 70K | — | $0 |
| Feb 15, 2024 | Waldron Richard A | Chief Financial Officer | Grant(A) | 106K | — | $0 |
| Jan 31, 2024 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 657 | $1.92 | $1K |
| Jan 31, 2024 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.92 | $4K |
| Dec 31, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 555 | $2.46 | $1K |
| Dec 31, 2023 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $2.46 | $4K |
| Dec 31, 2023 | Gray Mary Ann | Director | Grant(A) | 6K | — | $0 |
| Dec 31, 2023 | Williams Eddie | Director | Grant(A) | 5K | — | $0 |
| Dec 26, 2023 | McBrinn Sylvia | Director | Buy(P) | 4K | $2.33 | $9K |
| Dec 20, 2023 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Buy(P) | 50K | $2.14 | $107K |
| Dec 19, 2023 | Vasquez Christian | See Remarks | Buy(P) | 7K | $2.04 | $15K |
| Dec 19, 2023 | Steinman Lawrence | Director | Buy(P) | 20K | $2.05 | $41K |
| Nov 30, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 554 | $1.77 | $981 |
| Nov 30, 2023 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.77 | $3K |
| Oct 31, 2023 | Vasquez Christian | See Remarks | Tax withholding(F) | 194 | $1.47 | $285 |
| Oct 31, 2023 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.47 | $3K |
| Oct 31, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 555 | $1.47 | $816 |
| Oct 31, 2023 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 970 | $1.47 | $1K |
| Oct 31, 2023 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 3K | $1.47 | $4K |
| Sep 30, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 554 | $1.70 | $942 |
| Sep 30, 2023 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $1.70 | $3K |
| Sep 30, 2023 | Vasquez Christian | See Remarks | Tax withholding(F) | 194 | $1.70 | $330 |
| Sep 30, 2023 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 970 | $1.70 | $2K |
| Sep 30, 2023 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 3K | $1.70 | $5K |
| Sep 30, 2023 | Gray Mary Ann | Director | Grant(A) | 9K | — | $0 |
| Sep 30, 2023 | Williams Eddie | Director | Grant(A) | 7K | — | $0 |
| Sep 8, 2023 | McBrinn Sylvia | Director | Buy(P) | 2K | $2.54 | $5K |
| Aug 31, 2023 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 3K | $2.51 | $7K |
| Aug 31, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 555 | $2.51 | $1K |
| Aug 31, 2023 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $2.51 | $4K |
| Aug 31, 2023 | Vasquez Christian | See Remarks | Tax withholding(F) | 194 | $2.51 | $487 |
| Aug 31, 2023 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 970 | $2.51 | $2K |
| Jul 31, 2023 | Vasquez Christian | See Remarks | Tax withholding(F) | 194 | $2.99 | $580 |
| Jul 31, 2023 | Smith Scott Andrew | Director | Tax withholding(F) | 2K | $2.99 | $5K |
| Jul 31, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 554 | $2.99 | $2K |
| Jul 31, 2023 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 970 | $2.99 | $3K |
| Jul 31, 2023 | Short Jay M PHD | Chief Executive Officer, Director, 10% Owner | Tax withholding(F) | 3K | $2.99 | $9K |
| Jun 30, 2023 | Waldron Richard A | Chief Financial Officer | Tax withholding(F) | 970 | $3.00 | $3K |
| Jun 30, 2023 | Sievers Eric | Chief Medical Officer | Tax withholding(F) | 555 | $3.00 | $2K |
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).