DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

DEERFIELD MANAGEMENT COMPANY, L.P.'s Holding History (CIK: 0001009258)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025
Shares 3,723,131 Value ($000) $34,700 Avg Close $8.35 Range $6.70 - $10.90
Q3 2025
Shares 4,705,413 Value ($000) $33,173 Avg Close $6.88 Range $5.63 - $7.74
Q2 2025
Shares 3,723,131 Value ($000) $24,200 Avg Close $6.88 Range $6.08 - $8.14
Q1 2025
Shares 2,960,740 Value ($000) $23,479 Avg Close $10.77 Range $7.54 - $13.53
Q4 2024
Shares 2,596,033 Value ($000) $32,892 Avg Close $13.91 Range $12.11 - $16.76
Q3 2024
Shares 2,617,713 Value ($000) $36,465 Avg Close $14.27 Range $12.53 - $16.75
Q2 2024
Shares 2,923,137 Value ($000) $40,281 Avg Close $14.63 Range $11.94 - $18.07
Q1 2024
Shares 1,765,312 Value ($000) $29,163 Avg Close $14.97 Range $13.42 - $17.85
Q4 2023
Shares 1,761,178 Value ($000) $25,713 Avg Close $12.12 Range $9.67 - $15.60
Q3 2023
Shares 1,269,992 Value ($000) $15,583 Avg Close $13.04 Range $11.13 - $15.36
Q2 2023
Shares 1,269,992 Value ($000) $15,164 Avg Close $13.06 Range $10.84 - $16.00
Q4 2022
Shares 964,033 Value ($000) $20,746 Avg Close $20.51 Range $17.66 - $23.10
Q3 2022
Shares 1,032,000 Value ($000) $20,671 Avg Close $21.27 Range $16.00 - $28.35
Q2 2022
Shares 3,512,123 Value ($000) $62,867 Avg Close $10.33 Range $5.44 - $18.22
Q1 2022
Shares 2,086,449 Value ($000) $20,698 Avg Close $13.21 Range $9.03 - $17.70
Q4 2021
Shares 2,202,533 Value ($000) $37,113 Avg Close $20.55 Range $15.16 - $26.62
Q3 2021
Shares 1,710,730 Value ($000) $40,596 Avg Close $23.96 Range $19.76 - $28.70
Q2 2021
Shares 818,980 Value ($000) $18,648 Avg Close $20.76 Range $17.19 - $27.04