IDEAYA BIOSCIENCES INC

Ticker: IDYA CUSIP: 45166A102 Class: Common Stock

GENERAL AMERICAN INVESTORS CO INC's Holding History (CIK: 0000040417)

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

Q4 2025

Shares 280,261 Value ($000) $9,689 Avg Close $31.88 Range $26.05 - $37.08

Q3 2025

Shares 280,261 Value ($000) $7,626 Avg Close $24.19 Range $20.50 - $28.01

Q2 2025

Shares 260,261 Value ($000) $5,471 Avg Close $19.19 Range $13.45 - $23.09

Q1 2025

Shares 260,261 Value ($000) $4,263 Avg Close $21.31 Range $15.94 - $26.44

Q4 2024

Shares 120,261 Value ($000) $3,091 Avg Close $28.31 Range $24.20 - $32.67

Q3 2024

Shares 90,000 Value ($000) $2,851 Avg Close $37.92 Range $29.70 - $44.42

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	280,261	$9,689	$31.88	$26.05 - $37.08
Q3 2025	280,261	$7,626	$24.19	$20.50 - $28.01
Q2 2025	260,261	$5,471	$19.19	$13.45 - $23.09
Q1 2025	260,261	$4,263	$21.31	$15.94 - $26.44
Q4 2024	120,261	$3,091	$28.31	$24.20 - $32.67
Q3 2024	90,000	$2,851	$37.92	$29.70 - $44.42