BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Millstone Evans Group, LLC's Holding History (CIK: 0002041943)

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

Q4 2025

Shares 50 Value ($000) $9 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 50 Value ($000) $7 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 50 Value ($000) $6 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 50 Value ($000) $7 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 50 Value ($000) $8 Avg Close $168.67 Range $145.07 - $195.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	50	$9	$163.37	$138.00 - $185.17
Q3 2025	50	$7	$135.17	$121.05 - $150.28
Q2 2025	50	$6	$124.60	$110.04 - $137.32
Q1 2025	50	$7	$142.96	$128.51 - $157.09
Q4 2024	50	$8	$168.67	$145.07 - $195.00