Day One Biopharmaceuticals, Inc (DAWN) insider trading
Every open-market stock purchase and sale by Day One Biopharmaceuticals, Inc executives, directors, large shareholders and members of Congress, from SEC Form 4 filings. Sector: Other.
Insider activity at a glance
- Insiders sold $673K over the last 12 months (9 sales). No open-market buys.
- Last insider buy: AI Day1 LLC (Insider), $12M, 2 years ago.
Last 12 months: insiders bought $0 (0 buys) and sold $673K (9 sales). Last close $21.53 on Apr 21, 2026.
Recent DAWN insider trades
| Date | Insider | Trade | Value |
|---|---|---|---|
| Apr 23, 2026 | AI Day1 LLC (Insider) | Sold (not open market) | $278M |
| Apr 23, 2026 | AI Day1 LLC (Insider) | Sold (not open market) | $17.8M |
| Apr 23, 2026 | Jeremy Bender (CEO) | Sold (not open market) | $13.2M |
| Apr 23, 2026 | Charles N York II (CFO) | Sold (not open market) | $4.5M |
| Apr 23, 2026 | Jeremy Bender (CEO) | Sold (not open market) | $4M |
| Apr 23, 2026 | Jeremy Bender (CEO) | Sold (not open market) | $3.6M |
| Apr 23, 2026 | Lauren Merendino (C-suite exec) | Sold (not open market) | $3M |
| Apr 23, 2026 | Adam Dubow (Officer) | Sold (not open market) | $2.8M |
| Apr 23, 2026 | Jeremy Bender (CEO) | Sold (not open market) | $2.6M |
| Apr 23, 2026 | Michael Vasconcelles (Insider) | Sold (not open market) | $2.3M |
| Apr 23, 2026 | Jeremy Bender (CEO) | Sold (not open market) | $2.2M |
| Apr 23, 2026 | Charles N York II (CFO) | Sold (not open market) | $2.1M |
| Apr 23, 2026 | Michael Vasconcelles (Insider) | Sold (not open market) | $1.9M |
| Apr 23, 2026 | Charles N York II (CFO) | Sold (not open market) | $1.5M |
| Apr 23, 2026 | Charles N York II (CFO) | Sold (not open market) | $1.4M |
| Apr 23, 2026 | Lauren Merendino (C-suite exec) | Sold (not open market) | $1.2M |
| Apr 23, 2026 | Adam Dubow (Officer) | Sold (not open market) | $1.2M |
| Apr 23, 2026 | Charles N York II (CFO) | Sold (not open market) | $1M |
| Apr 23, 2026 | Adam Dubow (Officer) | Sold (not open market) | $809K |
| Apr 23, 2026 | Lauren Merendino (C-suite exec) | Sold (not open market) | $809K |
| Apr 23, 2026 | William Grossman (Insider) | Sold (not open market) | $599K |
| Apr 23, 2026 | Habib J Dable (Insider) | Sold (not open market) | $599K |
| Apr 23, 2026 | John A. Josey (Insider) | Sold (not open market) | $566K |
| Apr 23, 2026 | J. Scott Garland (Insider) | Sold (not open market) | $432K |
| Apr 23, 2026 | Saira Ramasastry (Insider) | Sold (not open market) | $428K |
Who's trading DAWN
- Charles N York II, CFO: sold $107K (2 sales), last Apr 23, 2026
- Jeremy Bender, CEO: sold $321K (2 sales), last Apr 23, 2026
- Michael Vasconcelles, Insider: sold $31.6K (1 sale), last Apr 23, 2026
- AI Day1 LLC, 10% owner: other filings, last Apr 23, 2026
- Habib J Dable, Insider: other filings, last Apr 23, 2026
- Adam Dubow, Officer: sold $113K (2 sales), last Apr 23, 2026
- J. Scott Garland, Insider: other filings, last Apr 23, 2026
- William Grossman, Insider: other filings, last Apr 23, 2026
- Natalie C. Holles, Insider: other filings, last Apr 23, 2026
- John A. Josey, Insider: other filings, last Apr 23, 2026
- Lauren Merendino, C-suite exec: sold $101K (2 sales), last Apr 23, 2026
- Garry A Nicholson, Insider: other filings, last Apr 23, 2026
- Saira Ramasastry, Insider: other filings, last Apr 23, 2026
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