DAY ONE BIOPHARMACEUTICALS I

Ticker: DAWN CUSIP: 23954D109 Class: Common Stock

AMERICAN CENTURY COMPANIES INC's Holding History (CIK: 0000748054)

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

Q4 2025

Shares 78,925 Value ($000) $736 Avg Close $8.35 Range $6.70 - $10.90

Q3 2025

Shares 33,865 Value ($000) $239 Avg Close $6.88 Range $5.63 - $7.74

Q2 2025

Shares 27,330 Value ($000) $178 Avg Close $6.88 Range $6.08 - $8.14

Q1 2025

Shares 14,415 Value ($000) $114 Avg Close $10.77 Range $7.54 - $13.53

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	78,925	$736	$8.35	$6.70 - $10.90
Q3 2025	33,865	$239	$6.88	$5.63 - $7.74
Q2 2025	27,330	$178	$6.88	$6.08 - $8.14
Q1 2025	14,415	$114	$10.77	$7.54 - $13.53