Day One Biopharmaceuticals, Inc.

Ownership Transactions Reported by 22 Insiders

Symbol
DAWN on Nasdaq
Industry
Pharmaceutical Preparations
Location
2000 Sierra Point Parkway, Suite 501, Brisbane, CA

Insiders trading volume in the past year

Day One Biopharmaceuticals, Inc. executives and other stock owners filed with the SEC include:

Name Relationship Holdings Value Past Year Net Change Change % Report Date
AI Day1 LLC 10%+ Owner $163M Aug 1, 2024
Canaan XI L.P. 10%+ Owner $81.4M Sep 21, 2022
Takeda Pharmaceutical Co Ltd 10%+ Owner $71.5M Dec 7, 2021
Atlas Venture Fund XI, L.P. 10%+ Owner $70.2M Dec 12, 2022
Samuel C. Blackman Head Of R&D $29.4M -$399K -1.34% Dec 10, 2024
Atlas Venture Opportunity Fund II, L.P. 10%+ Owner $20.6M Jun 17, 2022
Jeremy Bender CHIEF EXECUTIVE OFFICER, Director $16.1M -$482K -2.91% Nov 15, 2025
Atlas Venture Opportunity Fund I, L.P. 10%+ Owner $9.27M Jul 1, 2022
Charles N. York II COO and CFO $5.23M -$143K -2.66% Nov 15, 2025
Julie Papanek Grant Director $3.86M Mar 1, 2023
Adam Dubow Gen Counsel & Secretary $2.01M -$152K -7.05% Nov 15, 2025
Lauren Merendino Chief Commercial Officer $453K -$83.3K -15.5% Nov 15, 2025
Garry A. Nicholson Director Nov 6, 2025
Natalie C. Holles Director Nov 6, 2025
William Grossman Director Nov 6, 2025
J. Scott Garland Director Nov 6, 2025
Habib J. Dable Director Nov 6, 2025
Daniel J. Becker Director Jun 22, 2023
Michael Vasconcelles Head of Research and Dev. Jun 16, 2025
Saira Ramasastry Director Nov 6, 2025
Michael Gladstone Director May 23, 2024
John A. Josey Director Nov 6, 2025

Recent Insider Transactions by Companies or Individuals for Day One Biopharmaceuticals, Inc.

Insider Symbol Class Transaction % Value $ * Price $ Shares Shares Owned Date Ownership
* An asterisk sign (*) next to the price indicates that the price is likely invalid.