DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

Magnetar Financial LLC's Holding History (CIK: 0001352851)

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

Q3 2025

Shares 16,487 Value ($000) $116 Avg Close $6.88 Range $5.63 - $7.74

Q1 2025

Shares 11,303 Value ($000) $90 Avg Close $10.77 Range $7.54 - $13.53

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	16,487	$116	$6.88	$5.63 - $7.74
Q1 2025	11,303	$90	$10.77	$7.54 - $13.53