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Day One Biopharmaceuticals Inc (DAWN) Insider Trading

Total insider buys:
  • $44,054,335.49
Total insider sells:
  • $41,696,470.01
Most recent insider trade:
  • Aug. 18, 2025
Most active insider trader:
  • Samuel C Blackman
Trader NameDateTitleAmountPriceTypeTotal Value
May 16, 2023CEO3,104$13.12Sell$40,724.48
March 10, 2023Insider10,000$18.05Sell$180,500.00
March 7, 2023CEO12,500$20.01Sell$250,125.00
Feb. 16, 2023Insider674$19.57Sell$13,190.18
Feb. 16, 2023CFO930$19.57Sell$18,200.10
Feb. 16, 2023CEO3,022$19.57Sell$59,140.54
Feb. 10, 2023Insider10,000$20.07Sell$200,700.00
Jan. 23, 2023CEO12,500$22.00Sell$275,000.00
Jan. 20, 2023CFO10,000$22.75Sell$227,500.00
Jan. 10, 2023Insider10,000$22.86Sell$228,600.00
Jan. 3, 2023Director25,000$20.65Sell$516,250.00
Dec. 21, 2022CEO12,500$20.32Sell$254,000.00
Dec. 20, 2022CFO10,000$20.07Sell$200,700.00
Dec. 8, 2022Director4,358$22.08Sell$96,224.64
Dec. 1, 2022Insider10,000$21.45Sell$214,500.00
Dec. 1, 2022Director5,000$21.75Sell$108,750.00
Nov. 21, 2022CFO10,000$20.76Sell$207,600.00
Nov. 21, 2022CEO12,500$20.76Sell$259,500.00
Nov. 16, 2022CEO1,513$21.46Sell$32,468.98
Nov. 16, 2022CFO430$21.46Sell$9,227.80
Nov. 16, 2022Insider377$21.46Sell$8,090.42
Nov. 1, 2022CEO12,500$20.03Sell$250,375.00
Nov. 1, 2022CFO10,000$20.03Sell$200,300.00
Nov. 1, 2022Director5,000$20.04Sell$100,200.00
Oct. 3, 2022Director5,000$20.06Sell$100,300.00
Oct. 3, 2022CFO10,000$20.05Sell$200,500.00
Oct. 3, 2022CEO12,500$20.05Sell$250,625.00
Sept. 21, 2022Director613,603$18.55Sell$11,382,335.65
Sept. 20, 2022Major Shareholder148,670$19.51Sell$2,900,551.70
Sept. 19, 2022Director76,725$20.57Sell$1,578,233.25
Sept. 16, 2022Major Shareholder115,307$21.55Sell$2,484,865.85
Sept. 15, 2022Director51,281$22.85Sell$1,171,770.85
Sept. 14, 2022Major Shareholder106,111$23.68Sell$2,512,708.48
Sept. 13, 2022Director87,647$24.40Sell$2,138,586.80
Aug. 16, 2022CEO4,003$24.31Sell$97,312.93
Aug. 16, 2022CFO1,089$24.31Sell$26,473.59
Aug. 16, 2022Insider941$24.31Sell$22,875.71
Aug. 4, 2022Director5,000$20.00Sell$100,000.00
Aug. 4, 2022CFO10,000$20.05Sell$200,500.00
Aug. 4, 2022CEO12,500$20.00Sell$250,000.00
Aug. 1, 2022Insider10,000$16.88Sell$168,800.00
July 18, 2022CFO2,500$20.00Sell$50,000.00
July 18, 2022Director2,600$20.00Sell$52,000.00
July 8, 2022Chief Executive Officer1,795$20.00Sell$35,900.00
July 8, 2022N/A1,242$20.00Sell$24,840.00
July 8, 2022COO, CFO and Secretary1,416$20.00Sell$28,320.00
July 5, 2022CFO800$20.00Sell$16,000.00
July 5, 2022CEO857$20.00Sell$17,140.00
July 1, 2022CEO1,746$20.00Sell$34,920.00
July 1, 2022Director1,000$20.00Sell$20,000.00
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  • Insiders are both buying and selling Day One Biopharmaceuticals Inc stock.

  • The insider traders at Day One Biopharmaceuticals Inc are: Samuel C Blackman, Charles N York II, Jeremy Bender, Julie Papanek Grant, Adam Dubow, Ai Day1 Llc, Pharmaceutical Co Ltd Takeda, Xi L.P. Canaan, Papanek Julie Grant, Lauren Merendino, Michael Gladstone, Saira Ramasastry, Grant Papanek Julie, Bender Jeremy, and York Charles N II

  • The most active insider trader at Day One Biopharmaceuticals Inc is Samuel C Blackman with 29 trades.

  • Julie Papanek Grant has sold the most Day One Biopharmaceuticals Inc stock with a total value of $17,708,901.19.

  • Ai Day1 Llc has bought the most Day One Biopharmaceuticals Inc stock with a total value of $36,421,394.49.

  • The most recent insider trade for Day One Biopharmaceuticals Inc was on Aug. 18, 2025.

  • The single biggest insider buy for Day One Biopharmaceuticals Inc was from Ai Day1 Llc with a total value of $18,000,000.00 on June 17, 2022.

  • The single biggest insider sell for Day One Biopharmaceuticals Inc was from Julie Papanek Grant with a total value of $11,382,335.65 on Sept. 21, 2022.