DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

Rock Springs Capital Management LP's Holding History (CIK: 0001595725)

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

Q4 2021

Shares 381,939 Value ($000) $6,436 Avg Close $20.55 Range $15.16 - $26.62

Q3 2021

Shares 376,439 Value ($000) $8,933 Avg Close $23.96 Range $19.76 - $28.70

Q2 2021

Shares 373,739 Value ($000) $8,510 Avg Close $20.76 Range $17.19 - $27.04

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	381,939	$6,436	$20.55	$15.16 - $26.62
Q3 2021	376,439	$8,933	$23.96	$19.76 - $28.70
Q2 2021	373,739	$8,510	$20.76	$17.19 - $27.04