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 |
|---|---|---|---|---|---|---|
| Jul 9, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Grant(A) | 20K | — | $0 |
| Jun 17, 2026 | Scheller Richard H | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Lavigne Louis J JR | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Lavigne Louis J JR | Director | Grant(A) | 9K | — | $0 |
| Jun 17, 2026 | Desouza Errol B | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Desouza Errol B | Director | Grant(A) | 9K | — | $0 |
| Jun 17, 2026 | Altmeyer Mark | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Altmeyer Mark | Director | Grant(A) | 9K | — | $0 |
| Jun 17, 2026 | Yaffe Kristine | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Yaffe Kristine | Director | Grant(A) | 9K | — | $0 |
| Jun 17, 2026 | Scheller Richard H | Director | Grant(A) | 9K | — | $0 |
| Jun 17, 2026 | Hammond Paula | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Hammond Paula | Director | Grant(A) | 9K | — | $0 |
| Jun 17, 2026 | Garofalo Elizabeth A. | Director | Grant(A) | 29K | — | $0 |
| Jun 17, 2026 | Garofalo Elizabeth A. | Director | Grant(A) | 9K | — | $0 |
| Jun 3, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 3K | $1.88 | $7K |
| Jun 2, 2026 | Berkley Neil Lindsay | CFO & Chief Business Officer | Sell(S) | 19K | $1.97 | $38K |
| Jun 2, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 6K | $1.97 | $11K |
| Jun 2, 2026 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 87K | $1.97 | $172K |
| Jun 1, 2026 | Scheller Richard H | Director | Grant(A) | 11K | — | $0 |
| Apr 16, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 2K | $2.65 | $5K |
| Mar 15, 2026 | Berkley Neil Lindsay | CFO & Chief Business Officer | Grant(A) | 55K | — | $0 |
| Mar 13, 2026 | Rosenthal Arnon | Chief Executive Officer, Director | Grant(A) | 116K | — | $0 |
| Mar 10, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 1K | $2.65 | $3K |
| Mar 3, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 3K | $2.08 | $7K |
| Mar 2, 2026 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 82K | $2.12 | $174K |
| Mar 2, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 8K | $2.12 | $17K |
| Mar 2, 2026 | Berkley Neil Lindsay | CFO & Chief Business Officer | Sell(S) | 30K | $2.12 | $63K |
| Feb 26, 2026 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 4K | $2.50 | $10K |
| Dec 5, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 5K | $1.21 | $6K |
| Dec 3, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 104K | $1.12 | $117K |
| Dec 3, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 42K | $1.12 | $47K |
| Dec 3, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 8K | $1.12 | $9K |
| Dec 3, 2025 | Berkley Neil Lindsay | Chief Bus Ofcr & Interim CFO | Sell(S) | 37K | $1.12 | $42K |
| Nov 10, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Grant(A) | 174K | — | $0 |
| Nov 10, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Grant(A) | 523K | — | $0 |
| Nov 10, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Grant(A) | 32K | — | $0 |
| Nov 10, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Grant(A) | 49K | — | $0 |
| Nov 10, 2025 | Berkley Neil Lindsay | Chief Bus Ofcr & Interim CFO | Grant(A) | 65K | — | $0 |
| Nov 10, 2025 | Berkley Neil Lindsay | Chief Bus Ofcr & Interim CFO | Grant(A) | 195K | — | $0 |
| Sep 2, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 52K | $2.50 | $129K |
| Sep 2, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 24K | $2.50 | $59K |
| Sep 2, 2025 | Berkley Neil Lindsay | Principal Financial Officer | Sell(S) | 16K | $2.50 | $40K |
| Sep 2, 2025 | Wong-Sarad Grace | Principal Accounting Officer | Sell(S) | 6K | $2.50 | $15K |
| Aug 26, 2025 | Hammond Paula | Director | Sell(S) | 14K | $2.36 | $33K |
| Jul 1, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Grant(A) | 137K | — | $0 |
| Jul 1, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Grant(A) | 46K | — | $0 |
| Jul 1, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Grant(A) | 55K | — | $0 |
| Jul 1, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Grant(A) | 18K | — | $0 |
| Jul 1, 2025 | Berkley Neil Lindsay | Principal Financial Officer | Grant(A) | 18K | — | $0 |
| Jun 20, 2025 | Yaffe Kristine | Director | Sell(S) | 1K | $1.44 | $1K |
| Jun 11, 2025 | Altmeyer Mark | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Altmeyer Mark | Director | Grant(A) | 9K | — | $0 |
| Jun 11, 2025 | Desouza Errol B | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Desouza Errol B | Director | Grant(A) | 9K | — | $0 |
| Jun 11, 2025 | Lavigne Louis J JR | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Lavigne Louis J JR | Director | Grant(A) | 9K | — | $0 |
| Jun 11, 2025 | Scheller Richard H | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Scheller Richard H | Director | Grant(A) | 9K | — | $0 |
| Jun 11, 2025 | Garofalo Elizabeth A. | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Garofalo Elizabeth A. | Director | Grant(A) | 9K | — | $0 |
| Jun 11, 2025 | Yaffe Kristine | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Yaffe Kristine | Director | Grant(A) | 9K | — | $0 |
| Jun 11, 2025 | Hammond Paula | Director | Grant(A) | 29K | — | $0 |
| Jun 11, 2025 | Hammond Paula | Director | Grant(A) | 9K | — | $0 |
| Jun 2, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 52K | $1.34 | $70K |
| Jun 2, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 24K | $1.34 | $32K |
| Jun 2, 2025 | Grasso Marc | Chief Financial Officer | Sell(S) | 16K | $1.34 | $22K |
| May 2, 2025 | Scheller Richard H | Director | Grant(A) | 16K | — | $0 |
| Mar 3, 2025 | Romano Gary | Chief Medical Officer | Sell(S) | 16K | $1.47 | $24K |
| Mar 3, 2025 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 40K | $1.47 | $59K |
| Mar 3, 2025 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 29K | $1.47 | $43K |
| Mar 3, 2025 | Grasso Marc | Chief Financial Officer | Sell(S) | 18K | $1.47 | $27K |
| Dec 2, 2024 | Romano Gary | Chief Medical Officer | Sell(S) | 15K | $2.52 | $38K |
| Dec 2, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 27K | $2.52 | $67K |
| Dec 2, 2024 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 52K | $2.52 | $131K |
| Dec 2, 2024 | Grasso Marc | Chief Financial Officer | Sell(S) | 16K | $2.52 | $42K |
| Oct 1, 2024 | Romano Gary | Chief Medical Officer | Grant(A) | 184K | — | $0 |
| Oct 1, 2024 | Rosenthal Arnon | Chief Executive Officer, Director | Grant(A) | 611K | — | $0 |
| Oct 1, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Grant(A) | 300K | — | $0 |
| Oct 1, 2024 | Grasso Marc | Chief Financial Officer | Grant(A) | 216K | — | $0 |
| Sep 3, 2024 | Romano Gary | Chief Medical Officer | Sell(S) | 8K | $4.88 | $41K |
| Sep 3, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 14K | $4.88 | $68K |
| Sep 3, 2024 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 26K | $4.88 | $129K |
| Sep 3, 2024 | Grasso Marc | Chief Financial Officer | Sell(S) | 7K | $4.88 | $36K |
| Aug 22, 2024 | Scheller Richard H | Director | Sell(S) | 44K | $5.16 | $228K |
| Aug 12, 2024 | Yaffe Kristine | Director | Sell(S) | 5K | $5.06 | $25K |
| Aug 12, 2024 | Hammond Paula | Director | Sell(S) | 11K | $5.06 | $53K |
| Aug 2, 2024 | Scheller Richard H | Director | Grant(A) | 16K | — | $0 |
| Jun 12, 2024 | Hammond Paula | Director | Grant(A) | 35K | — | $0 |
| Jun 12, 2024 | Wehner David M. | Director | Grant(A) | 35K | — | $0 |
| Jun 12, 2024 | Scheller Richard H | Director | Grant(A) | 35K | — | $0 |
| Jun 12, 2024 | Garofalo Elizabeth A. | Director | Grant(A) | 35K | — | $0 |
| Jun 12, 2024 | Yaffe Kristine | Director | Grant(A) | 35K | — | $0 |
| Jun 12, 2024 | Lavigne Louis J JR | Director | Grant(A) | 35K | — | $0 |
| Jun 3, 2024 | Grasso Marc | Chief Financial Officer | Sell(S) | 7K | $4.80 | $33K |
| Jun 3, 2024 | Kenkare-Mitra Sara | President and Head of R&D | Sell(S) | 13K | $4.80 | $63K |
| Jun 3, 2024 | Romano Gary | Chief Medical Officer | Sell(S) | 8K | $4.80 | $39K |
| Jun 3, 2024 | Rosenthal Arnon | Chief Executive Officer, Director | Sell(S) | 25K | $4.80 | $121K |
| May 29, 2024 | Polaris Venture Management Co. VI, L.L.C. | 10% Owner | Other(J) | 500K | — | $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 2021-01-04 → 2026-07-20. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).