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SCHEDULE 13G/A
SCHEDULE 13G/A0000315066-26-000409·Day One Biopharmaceuticals, Inc.
Schedule 13G ownership disclosure
Day One Biopharmaceuticals Inc
COMMON STOCK · CUSIP: 23954D109
Event date: 2025-12-31
Reporting persons may disclose overlapping interests. Their amounts are shown individually and are not added into a filing total.
- Filing-level shares
- Unavailable
- Percent of class
- Unavailable
- FMR LLC
Shares: 5,717,007.68 · Class: 5.6%
- Abigail P. Johnson
Shares: 5,717,007.68 · Class: 5.6%
Amounts are as disclosed in this filing. Schedule type alone does not establish investment intent.
Source: SEC EDGAR filingFiling metadata
- Accession number
- 0000315066-26-000409
- Form type
- SCHEDULE 13G/A
- Filer
- Day One Biopharmaceuticals, Inc.
- CIK
- CIK 1845337
- Filed
- Feb 05, 2026
- Reporting period
- Dec 31, 2025
- Description
- Schedule 13G beneficial ownership