GRAIL INC

Ticker: GRAL CUSIP: 384747101 Class: Common Stock

S.A. Mason LLC's Holding History (CIK: 0001800911)

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

Q4 2025

Shares 1,499 Value ($000) $128 Avg Close $86.40 Range $58.50 - $115.76

Q2 2025

Shares 1,499 Value ($000) $77 Avg Close $36.20 Range $20.44 - $52.56

Q1 2025

Shares 1,499 Value ($000) $38 Avg Close $30.90 Range $16.56 - $63.99

Q4 2024

Shares 999 Value ($000) $18 Avg Close $16.26 Range $12.33 - $24.92

Q3 2024

Shares 703 Value ($000) $10 Avg Close $15.16 Range $12.56 - $21.47

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,499	$128	$86.40	$58.50 - $115.76
Q2 2025	1,499	$77	$36.20	$20.44 - $52.56
Q1 2025	1,499	$38	$30.90	$16.56 - $63.99
Q4 2024	999	$18	$16.26	$12.33 - $24.92
Q3 2024	703	$10	$15.16	$12.56 - $21.47