York Charles N II's Form 4 filing
Day One Biopharmaceuticals, Inc. (DAWN) · filed Nov 18, 2025
- Accession no.
- 0001655962-25-000006
- Filed
- Nov 18, 2025
- Trade date
- Nov 15-17, 2025
- Filing delay
- 3 days
- Rule 10b5-1 plan
- Not checked
This filing lists 5 non-derivative transactions and 4 derivative transactions. Open-market sales total $36.2K. It was filed 3 days after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| York Charles N IICIK 0001655962 | Officer (COO and CFO) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 15, 2025 | Common Stock | MOption exerciseAcquired | +1,375 | – | – | 283,277 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseAcquired | +2,250 | – | – | 285,527 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseAcquired | +6,625 | – | – | 292,152 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseAcquired | +6,625 | – | – | 298,777 | Direct | |
| Nov 17, 2025 | Common Stock | SSaleDisposed | −4,062 | $8.91 | −$36,192.42 | 294,715 | Direct |
Derivative securities (Table II)
Options, warrants, restricted stock units and similar. Shares are the underlying shares; price and value are for the derivative itself, and the holding after is in derivative units.
| Trade date | Security | Transaction | Underlying shares | Unit price | Value | Held after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 15, 2025 | Common Stock | MOption exerciseDisposed | −1,375 | $0.00 | $0 | 0 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseDisposed | −2,250 | $0.00 | $0 | 9,000 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseDisposed | −6,625 | $0.00 | $0 | 53,000 | Direct | |
| Nov 15, 2025 | Common Stock | MOption exerciseDisposed | −6,625 | $0.00 | $0 | 79,500 | Direct |
Footnotes
Livermore does not store Form 4 footnotes. For price ranges, how indirect holdings are held and trading plan details, read the original on SEC EDGAR.