York Charles N II — SEC Form 4 filings
SEC reporting owner CIK 1655962. 15 Form 4 filings on record with FilingPulse; latest filed 2026-04-23.
Transaction summary — filings shown
Covers all 15 filings on record, filed 2024-01-09 to 2026-04-23. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 12 legs across 10 filings — 93,922 shares, $1,449,516 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 91.
- Largest priced transaction: sale of 52,183 shares @ $17.89 ($933,397) in Day One Biopharmaceuticals, Inc., filed 2024-05-03.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Day One Biopharmaceuticals, Inc. (DAWN) | COO and CFO | 15 | — | 12 legs · 93,922 sh · $1,449,516 | 91 |
Form 4 filings — York Charles N II
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2026-04-23 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Disposition to issuer (D): 312,025 · Disposition to issuer (D): 497,667 (derivative) · Disposition to issuer (D): 151,000 (derivative) · Disposition to issuer (D): 116,000 (derivative) · Disposition to issuer (D): 162,000 (derivative) · Disposition to issuer (D): 162,000 (derivative) · +5 more | EDGAR |
| 2026-02-18 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 2,250 · Option exercise (M): 6,625 · Option exercise (M): 6,625 · Option exercise (M): 7,875 · Sale (S): 6,065 @ $11.60 · Option exercise (M): 2,250 (derivative) @ $0 · +3 more | EDGAR |
| 2026-01-30 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Grant/award (A): 188,000 (derivative) @ $0 · Grant/award (A): 126,000 (derivative) @ $0 | EDGAR |
| 2025-11-18 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Option exercise (M): 6,625 · Sale (S): 4,062 @ $8.91 · Option exercise (M): 1,375 (derivative) @ $0 · +3 more | EDGAR |
| 2025-11-07 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Disposition to issuer (D): 497,667 (derivative) @ $0 · Grant/award (A): 497,667 (derivative) @ $0 · Disposition to issuer (D): 151,000 (derivative) @ $0 · Grant/award (A): 151,000 (derivative) @ $0 · Disposition to issuer (D): 116,000 (derivative) @ $0 · Grant/award (A): 116,000 (derivative) @ $0 · +4 more | EDGAR |
| 2025-08-19 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Option exercise (M): 6,625 · Sale (S): 4,106 @ $6.77 · Option exercise (M): 1,375 (derivative) @ $0 · +3 more | EDGAR |
| 2025-05-19 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Option exercise (M): 6,625 · Sale (S): 4,282 @ $6.26 · Option exercise (M): 1,375 (derivative) @ $0 · +3 more | EDGAR |
| 2025-02-21 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Option exercise (M): 6,625 · Sale (S): 4,370 @ $11.96 · Option exercise (M): 1,375 (derivative) @ $0 · +3 more | EDGAR |
| 2025-01-31 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Grant/award (A): 162,000 (derivative) @ $0 · Grant/award (A): 106,000 (derivative) @ $0 | EDGAR |
| 2024-11-19 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Sale (S): 2,602 @ $13.21 · Option exercise (M): 1,375 (derivative) @ $0 · Option exercise (M): 2,250 (derivative) @ $0 · +1 more | EDGAR |
| 2024-08-19 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Sale (S): 2,633 @ $14.00 · Option exercise (M): 1,375 (derivative) @ $0 · Option exercise (M): 2,250 (derivative) @ $0 · +1 more | EDGAR |
| 2024-05-17 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Sale (S): 2,675 @ $16.08 · Option exercise (M): 1,375 (derivative) @ $0 · Option exercise (M): 2,250 (derivative) @ $0 · +1 more | EDGAR |
| 2024-05-03 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Sale (S): 52,183 @ $17.89 · Sale (S): 200 @ $17.90 · Sale (S): 8,078 @ $17.85 | EDGAR |
| 2024-02-20 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Option exercise (M): 1,375 · Option exercise (M): 2,250 · Option exercise (M): 6,625 · Sale (S): 2,666 @ $15.25 · Option exercise (M): 1,375 (derivative) @ $0 · Option exercise (M): 2,250 (derivative) @ $0 · +1 more | EDGAR |
| 2024-01-09 | 4 | Day One Biopharmaceuticals, Inc. (DAWN) | Grant/award (A): 162,000 (derivative) @ $0 · Grant/award (A): 106,000 (derivative) @ $0 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-09 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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