Day One Biopharmaceuticals, Inc.
A biopharmaceutical company focused on targeted cancer therapies for both children and adults. Its lead drug, Ojemda (tovorafenib), became the first FDA-approved systemic treatment for pediatric low-grade glioma, the most common childhood brain tumor. Founded in 2018 to close the "innovation gap" that left young cancer patients behind, the company takes its name from the "Day One talk" — the life-altering conversation a doctor has with a family on diagnosis day.
| Holder | Schedule | % of class | Shares | Filed |
|---|---|---|---|---|
| Vestal Point Capital, LP | 13G/APassive | 0% | 0 | May 15, 2026 |
| Ryan Wilder | 13G/APassive | 0% | 0 | May 15, 2026 |
| Atlas Venture Fund XI, L.P. | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Associates XI, L.P. | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Associates XI, LLC | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Opportunity Fund I, L.P. | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Associates Opportunity I, L.P. | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Associates Opportunity I, LLC | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Opportunity Fund II, L.P. | 13G/APassive | 0% | 0 | May 14, 2026 |
| Atlas Venture Associates Opportunity II, L.P. | 13G/APassive | 0% | 0 | May 14, 2026 |