DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q1 2025

Shares 1,665 Value ($000) $0 Avg Close $10.77 Range $7.54 - $13.53

Q3 2024

Shares 7,240 Value ($000) $0 Avg Close $14.27 Range $12.53 - $16.75

Q2 2024

Shares 17,425 Value ($000) $0 Avg Close $14.63 Range $11.94 - $18.07

Q1 2024

Shares 2,758 Value ($000) $0 Avg Close $14.97 Range $13.42 - $17.85

Q2 2023

Shares 107 Value ($000) $0 Avg Close $13.06 Range $10.84 - $16.00

Q1 2023

Shares 6,413 Value ($000) $0 Avg Close $19.53 Range $11.98 - $25.77

Q2 2022

Shares 132,926 Value ($000) $2,379 Avg Close $10.33 Range $5.44 - $18.22

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2025	1,665	$0	$10.77	$7.54 - $13.53
Q3 2024	7,240	$0	$14.27	$12.53 - $16.75
Q2 2024	17,425	$0	$14.63	$11.94 - $18.07
Q1 2024	2,758	$0	$14.97	$13.42 - $17.85
Q2 2023	107	$0	$13.06	$10.84 - $16.00
Q1 2023	6,413	$0	$19.53	$11.98 - $25.77
Q2 2022	132,926	$2,379	$10.33	$5.44 - $18.22