BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

&PARTNERS's Holding History (CIK: 0000107136)

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

Q4 2025

Shares 4,285 Value ($000) $833 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 3,530 Value ($000) $494 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 2,859 Value ($000) $361 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 1,783 Value ($000) $247 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 1,721 Value ($000) $262 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 2,196 Value ($000) $431 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 1,257 Value ($000) $291 Avg Close $217.32 Range $189.44 - $237.54

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,285	$833	$163.37	$138.00 - $185.17
Q3 2025	3,530	$494	$135.17	$121.05 - $150.28
Q2 2025	2,859	$361	$124.60	$110.04 - $137.32
Q1 2025	1,783	$247	$142.96	$128.51 - $157.09
Q4 2024	1,721	$262	$168.67	$145.07 - $195.00
Q3 2024	2,196	$431	$209.21	$188.78 - $238.00
Q2 2024	1,257	$291	$217.32	$189.44 - $237.54