DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2025
Shares 253,143 Value ($000) $2,359 Avg Close $8.35 Range $6.70 - $10.90
Q2 2025
Shares 1,346 Value ($000) $9 Avg Close $6.88 Range $6.08 - $8.14
Q1 2025
Shares 4,444 Value ($000) $35 Avg Close $10.77 Range $7.54 - $13.53
Q2 2024
Shares 5,987 Value ($000) $83 Avg Close $14.63 Range $11.94 - $18.07
Q1 2024
Shares 5,005 Value ($000) $83 Avg Close $14.97 Range $13.42 - $17.85
Q3 2023
Shares 2,958 Value ($000) $36 Avg Close $13.04 Range $11.13 - $15.36
Q4 2022
Shares 45,586 Value ($000) $981 Avg Close $20.51 Range $17.66 - $23.10
Q3 2022
Shares 59,123 Value ($000) $1,184 Avg Close $21.27 Range $16.00 - $28.35