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 14, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 3K | $40.57 | $111K |
| Jul 14, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 5K | $39.72 | $218K |
| Jun 30, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 2K | $40.09 | $76K |
| Jun 30, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 4K | $41.39 | $157K |
| Jun 30, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 3K | $42.17 | $140K |
| Jun 30, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 1K | $43.15 | $43K |
| Jun 29, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 7K | $39.77 | $292K |
| Jun 29, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 876 | $40.34 | $35K |
| Jun 10, 2026 | Silva Paul M | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Sanchez Ramiro | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Huber Reid M | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Healy James | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Young Wendy B. | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Paul Steven M | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Maraganore John | Director | Grant(A) | 15K | — | $0 |
| Jun 10, 2026 | Perez Robert J | Director | Grant(A) | 15K | — | $0 |
| May 26, 2026 | Third Rock Ventures V, L.P. | 10% Owner | Sell(S) | 19K | $40.05 | $744K |
| May 11, 2026 | Third Rock Ventures V, L.P. | 10% Owner | Sell(S) | 134K | $40.24 | $5.4M |
| May 8, 2026 | Third Rock Ventures V, L.P. | 10% Owner | Sell(S) | 5K | $40.31 | $202K |
| May 7, 2026 | Third Rock Ventures V, L.P. | 10% Owner | Sell(S) | 271K | $40.12 | $10.9M |
| Apr 17, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 20K | $39.99 | $809K |
| Apr 17, 2026 | Third Rock Ventures V, L.P. | 10% Owner | Sell(S) | 426K | $40.32 | $17.2M |
| Apr 14, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 10K | $35.08 | $358K |
| Apr 13, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 9K | $34.97 | $321K |
| Apr 10, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 500 | $34.98 | $17K |
| Apr 8, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 360 | $34.90 | $13K |
| Mar 30, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 7K | $28.04 | $201K |
| Mar 30, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 3K | $28.55 | $81K |
| Mar 25, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 10K | $29.99 | $303K |
| Mar 5, 2026 | Gault Cheryl | Chief Operating Officer | Sell(S) | 2K | $28.93 | $58K |
| Feb 19, 2026 | Bredt David | Chief Scientific Officer | Option exercise(M) | 6K | $1.80 | $11K |
| Feb 19, 2026 | Bredt David | Chief Scientific Officer | Option exercise(M) | 6K | — | $0 |
| Feb 18, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 4K | $29.05 | $103K |
| Feb 18, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 2K | $29.80 | $63K |
| Feb 18, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 3K | $29.04 | $87K |
| Feb 18, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 2K | $29.80 | $68K |
| Feb 17, 2026 | Bredt David | Chief Scientific Officer | Sell(S) | 2K | $29.59 | $65K |
| Feb 17, 2026 | Bredt David | Chief Scientific Officer | Sell(S) | 5K | $28.95 | $156K |
| Feb 17, 2026 | Bredt David | Chief Scientific Officer | Sell(S) | 900 | $28.02 | $25K |
| Feb 2, 2026 | Gault Cheryl | Chief Operating Officer | Grant(A) | 132K | — | $0 |
| Feb 2, 2026 | Bredt David | Chief Scientific Officer | Grant(A) | 103K | — | $0 |
| Feb 2, 2026 | Yeleswaram Krishnaswamy | Chief Development Officer | Grant(A) | 120K | — | $0 |
| Feb 2, 2026 | Ignelzi Troy A. | Chief Financial Officer | Grant(A) | 148K | — | $0 |
| Feb 2, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Grant(A) | 428K | — | $0 |
| Feb 2, 2026 | Sevigny Jeffrey | Chief Medical Officer | Grant(A) | 130K | — | $0 |
| Jan 20, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 5K | $26.11 | $133K |
| Jan 20, 2026 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 6K | $26.12 | $152K |
| Jan 15, 2026 | Bredt David | Chief Scientific Officer | Sell(S) | 8K | $26.83 | $223K |
| Jan 15, 2026 | Bredt David | Chief Scientific Officer | Sell(S) | 200 | $27.40 | $5K |
| Dec 31, 2025 | Yeleswaram Krishnaswamy | Chief Development Officer | Grant(A) | 9K | — | — |
| Dec 31, 2025 | Yeleswaram Krishnaswamy | Chief Development Officer | Sell(S) | 3K | $30.05 | $85K |
| Dec 31, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 7K | $30.05 | $197K |
| Dec 31, 2025 | Bredt David | Chief Scientific Officer | Grant(A) | 18K | — | — |
| Dec 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 3K | $30.04 | $84K |
| Dec 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 515 | $31.04 | $16K |
| Dec 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 2K | $30.04 | $73K |
| Dec 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 2K | $28.84 | $70K |
| Dec 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 600 | $31.04 | $19K |
| Dec 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 2K | $28.84 | $62K |
| Dec 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 8K | $29.95 | $231K |
| Dec 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 796 | $30.68 | $24K |
| Nov 26, 2025 | Gault Cheryl | Chief Operating Officer | Option exercise(M) | 5K | $1.80 | $9K |
| Nov 26, 2025 | Gault Cheryl | Chief Operating Officer | Sell(S) | 5K | $30.10 | $151K |
| Nov 26, 2025 | Gault Cheryl | Chief Operating Officer | Option exercise(M) | 5K | — | $0 |
| Nov 17, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 5K | $25.39 | $136K |
| Nov 17, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 3K | $24.84 | $78K |
| Nov 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 2K | $24.91 | $56K |
| Nov 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 3K | $25.43 | $78K |
| Nov 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 3K | $24.92 | $69K |
| Nov 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 3K | $25.44 | $72K |
| Oct 15, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 1K | $26.14 | $31K |
| Oct 15, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 5K | $25.72 | $120K |
| Oct 15, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 4K | $25.75 | $111K |
| Oct 15, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 755 | $26.17 | $20K |
| Oct 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 1K | $26.16 | $28K |
| Oct 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 7K | $25.73 | $191K |
| Sep 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 39K | $26.30 | $1.0M |
| Sep 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 1K | $26.87 | $38K |
| Sep 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 35K | $26.30 | $917K |
| Sep 17, 2025 | Ceesay Abraham | Chief Executive Officer, Director | Sell(S) | 700 | $27.04 | $19K |
| Sep 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 5K | $23.88 | $122K |
| Sep 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 3K | $24.66 | $84K |
| Sep 12, 2025 | Paul Steven M | Director | Buy(P) | 28K | $24.50 | $693K |
| Sep 12, 2025 | Paul Steven M | Director | Buy(P) | 13K | $24.97 | $334K |
| Sep 12, 2025 | Huber Reid M | Director | Buy(P) | 20K | $24.48 | $499K |
| Sep 11, 2025 | Young Wendy B. | Director | Buy(P) | 4K | $22.60 | $79K |
| Sep 8, 2025 | Gault Cheryl | Chief Operating Officer | Option exercise(M) | 5K | $1.80 | $9K |
| Sep 8, 2025 | Gault Cheryl | Chief Operating Officer | Sell(S) | 5K | $38.33 | $192K |
| Sep 8, 2025 | Gault Cheryl | Chief Operating Officer | Option exercise(M) | 5K | — | $0 |
| Aug 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 8K | $14.98 | $124K |
| Aug 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 200 | $15.79 | $3K |
| Jul 15, 2025 | Bredt David | Chief Scientific Officer | Sell(S) | 9K | $14.00 | $119K |
| Jun 17, 2025 | Silva Paul M | Director | Grant(A) | 11K | — | $0 |
| Jun 17, 2025 | Paul Steven M | Director | Grant(A) | 22K | — | $0 |
| Jun 17, 2025 | Huber Reid M | Director | Grant(A) | 22K | — | $0 |
| Jun 17, 2025 | Perez Robert J | Director | Grant(A) | 11K | — | $0 |
| Jun 17, 2025 | Healy James | Director | Grant(A) | 22K | — | $0 |
| Jun 17, 2025 | Maraganore John | Director | Grant(A) | 22K | — | $0 |
| Jun 17, 2025 | Young Wendy B. | Director | Grant(A) | 11K | — | $0 |
| Jun 17, 2025 | Sanchez Ramiro | Director | Grant(A) | 11K | — | $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 → 2026-07-22. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).