LYELL IMMUNOPHARMA INC

Ticker: LYEL CUSIP: 55083R203 Class: Common Stock

ARCH Venture Management, LLC's Holding History (CIK: 0001274403)

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

Q4 2025

Shares 2,759,072 Value ($000) $84,924 Avg Close $22.38 Range $15.62 - $45.00

Q3 2025

Shares 2,759,072 Value ($000) $44,807 Avg Close $11.42 Range $8.87 - $16.25

Q2 2025

Shares 1,820,634 Value ($000) $16,113 Avg Close $9.11 Range $7.65 - $13.80

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,759,072	$84,924	$22.38	$15.62 - $45.00
Q3 2025	2,759,072	$44,807	$11.42	$8.87 - $16.25
Q2 2025	1,820,634	$16,113	$9.11	$7.65 - $13.80