Day One Biopharmaceuticals, Inc.
DAWN
23 insider filings · Latest: Apr 23, 2026
Common Stock Transactions
| Txn Date | Accepted | Insider | Type | Shares | Avg Price | Value | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|---|
| Feb 18, 2025 | Feb 18 11:02 PM | JEREMY BENDER | Proposed Sale | 12,048 | $11.96 | $144.1K | — | View → |
| Nov 18, 2024 | Nov 18 9:22 PM | SAMUEL BLACKMAN | Proposed Sale | 2,206 | $13.21 | $29.1K | — | View → |
| Nov 18, 2024 | Nov 18 9:21 PM | JEREMY BENDER | Proposed Sale | 10,554 | $13.21 | $139.4K | — | View → |
| Nov 11, 2024 | Nov 12 12:49 PM | SAMUEL BLACKMAN | Proposed Sale | 50,000 | $16.39 | $819.5K | — | View → |
| Oct 31, 2024 | Oct 31 8:27 PM | SAMUEL BLACKMAN | Proposed Sale | 30,000 | $14.47 | $434.1K | — | View → |
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Stock Options & Derivatives
| Txn Date | Accepted | Insider | Type | Shares | Exercise Price | Shares Owned | Filing |
|---|---|---|---|---|---|---|---|
| Apr 23, 2026 | Apr 27 9:27 PM | AI Day1 LLC10% Owner | Disposition | 827,586 | $0.0001 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:40 PM | Jeremy BenderDirector, CHIEF EXECUTIVE OFFICER | Disposition | 3,477,953 | $11.16 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:39 PM | Michael VasconcellesHead of Research and Dev. | Disposition | 849,875 | $11.16 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:39 PM | Charles N York IICOO and CFO | Disposition | 1,520,792 | $11.16 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:38 PM | Adam DubowGen Counsel & Secretary | Disposition | 830,145 | $11.16 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:37 PM | Natalie C. HollesDirector | Disposition | 216,335 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:36 PM | Saira RamasastryDirector | Disposition | 223,616 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:35 PM | John A. JoseyDirector | Disposition | 200,216 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:34 PM | Scott J. GarlandDirector | Disposition | 184,107 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:33 PM | Habib J DableDirector | Disposition | 136,495 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:31 PM | William GrossmanDirector | Disposition | 136,495 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:30 PM | Garry A NicholsonDirector | Disposition | 141,235 | $8.99 | 0(D) | View → |
| Apr 23, 2026 | Apr 23 8:30 PM | Lauren MerendinoChief Commercial Officer | Disposition | 774,934 | $11.16 | 0(D) | View → |
| Feb 15, 2026 | Feb 18 10:18 PM | Lauren MerendinoChief Commercial Officer | Option Exercise | 15,162 | — | 69,375(D) | View → |
| Feb 15, 2026 | Feb 18 10:17 PM | Adam DubowGen Counsel & Secretary | Option Exercise | 16,463 | — | 65,625(D) | View → |
| Feb 15, 2026 | Feb 18 10:16 PM | Charles N York IICOO and CFO | Option Exercise | 23,375 | — | 118,125(D) | View → |
| Feb 15, 2026 | Feb 18 10:14 PM | Jeremy BenderDirector, CHIEF EXECUTIVE OFFICER | Option Exercise | 42,937 | — | 222,188(D) | View → |
| Feb 15, 2026 | Feb 18 10:13 PM | Michael VasconcellesHead of Research and Dev. | Option Exercise | 7,125 | — | 106,875(D) | View → |
| Jan 30, 2026 | Jan 30 10:19 PM | Charles N York IICOO and CFO | Grant/Award | 314,000 | $11.16 | 126,000(D) | View → |
| Jan 30, 2026 | Jan 30 10:18 PM | Michael VasconcellesHead of Research and Dev. | Grant/Award | 285,000 | $11.16 | 114,000(D) | View → |
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