DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

Quarry LP's Holding History (CIK: 0001965207)

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

Q3 2025

Shares 7,009 Value ($000) $49 Avg Close $6.88 Range $5.63 - $7.74

Q1 2024

Shares 6,400 Value ($000) $106 Avg Close $14.97 Range $13.42 - $17.85

Q4 2023

Shares 5,000 Value ($000) $73 Avg Close $12.12 Range $9.67 - $15.60

Q3 2023

Shares 6,519 Value ($000) $80 Avg Close $13.04 Range $11.13 - $15.36

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	7,009	$49	$6.88	$5.63 - $7.74
Q1 2024	6,400	$106	$14.97	$13.42 - $17.85
Q4 2023	5,000	$73	$12.12	$9.67 - $15.60
Q3 2023	6,519	$80	$13.04	$11.13 - $15.36