GRAIL INC

Ticker: GRAL CUSIP: 384747101 Class: Common Stock

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q3 2025

Shares 8,301 Value ($000) $491 Avg Close $38.21 Range $29.95 - $59.70

Q2 2025

Shares 2,227 Value ($000) $115 Avg Close $36.20 Range $20.44 - $52.56

Q4 2024

Shares 17,336 Value ($000) $309 Avg Close $16.26 Range $12.33 - $24.92

Q3 2024

Shares 7,824 Value ($000) $108 Avg Close $15.16 Range $12.56 - $21.47

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	8,301	$491	$38.21	$29.95 - $59.70
Q2 2025	2,227	$115	$36.20	$20.44 - $52.56
Q4 2024	17,336	$309	$16.26	$12.33 - $24.92
Q3 2024	7,824	$108	$15.16	$12.56 - $21.47