IDEAYA BIOSCIENCES INC

Ticker: IDYA CUSIP: 45166A102 Class: Common Stock

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q4 2025

Shares 17 Value ($000) $1 Avg Close $31.88 Range $26.05 - $37.08

Q3 2025

Shares 528 Value ($000) $14 Avg Close $24.19 Range $20.50 - $28.01

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	17	$1	$31.88	$26.05 - $37.08
Q3 2025	528	$14	$24.19	$20.50 - $28.01