IDEAYA BIOSCIENCES INC

Ticker: IDYA CUSIP: 45166A102 Class: Common Stock

TANG CAPITAL MANAGEMENT LLC's Holding History (CIK: 0001232621)

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

Q4 2025

Shares 450,000 Value ($000) $15,557 Avg Close $31.88 Range $26.05 - $37.08

Q3 2025

Shares 400,000 Value ($000) $10,884 Avg Close $24.19 Range $20.50 - $28.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	450,000	$15,557	$31.88	$26.05 - $37.08
Q3 2025	400,000	$10,884	$24.19	$20.50 - $28.01