DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

Y-Intercept (Hong Kong) Ltd's Holding History (CIK: 0001772875)

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

Q4 2025

Shares 282,025 Value ($000) $2,628 Avg Close $8.35 Range $6.70 - $10.90

Q2 2025

Shares 281,528 Value ($000) $1,830 Avg Close $6.88 Range $6.08 - $8.14

Q2 2024

Shares 13,822 Value ($000) $190 Avg Close $14.63 Range $11.94 - $18.07

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	282,025	$2,628	$8.35	$6.70 - $10.90
Q2 2025	281,528	$1,830	$6.88	$6.08 - $8.14
Q2 2024	13,822	$190	$14.63	$11.94 - $18.07