DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

DRW Securities, LLC's Holding History (CIK: 0001481986)

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

Q4 2025

Shares 11,635 Value ($000) $108 Avg Close $8.35 Range $6.70 - $10.90

Q3 2025

Shares 33,265 Value ($000) $233 Avg Close $6.88 Range $5.63 - $7.74

Q2 2025

Shares 57,804 Value ($000) $376 Avg Close $6.88 Range $6.08 - $8.14

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	11,635	$108	$8.35	$6.70 - $10.90
Q3 2025	33,265	$233	$6.88	$5.63 - $7.74
Q2 2025	57,804	$376	$6.88	$6.08 - $8.14