GRAIL INC

Ticker: GRAL CUSIP: 384747101 Class: Common Stock

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

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

Q4 2025

Shares 16,051 Value ($000) $1,374 Avg Close $86.40 Range $58.50 - $115.76

Q1 2025

Shares 8,169 Value ($000) $0 Avg Close $30.90 Range $16.56 - $63.99

Q4 2024

Shares 4,209 Value ($000) $0 Avg Close $16.26 Range $12.33 - $24.92

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	16,051	$1,374	$86.40	$58.50 - $115.76
Q1 2025	8,169	$0	$30.90	$16.56 - $63.99
Q4 2024	4,209	$0	$16.26	$12.33 - $24.92