BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

WINNOW WEALTH LLC's Holding History (CIK: 0002079687)

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

Q4 2025

Shares 12 Value ($000) $2 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 3 Value ($000) $0 Avg Close $135.17 Range $121.05 - $150.28

Q1 2025

Shares 4 Value ($000) $1 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 3 Value ($000) $0 Avg Close $168.67 Range $145.07 - $195.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	12	$2	$163.37	$138.00 - $185.17
Q3 2025	3	$0	$135.17	$121.05 - $150.28
Q1 2025	4	$1	$142.96	$128.51 - $157.09
Q4 2024	3	$0	$168.67	$145.07 - $195.00