BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Brevan Howard Capital Management LP's Holding History (CIK: 0001512857)

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

Q4 2025

Shares 71,017 Value ($000) $12,498 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 33,511 Value ($000) $4,694 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 13,456 Value ($000) $1,690 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 8,416 Value ($000) $1,152 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 7,138 Value ($000) $1,092 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 1,074 Value ($000) $208 Avg Close $209.21 Range $188.78 - $238.00

Q3 2023

Shares 1,928 Value ($000) $496 Avg Close $267.47 Range $251.85 - $287.60

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	71,017	$12,498	$163.37	$138.00 - $185.17
Q3 2025	33,511	$4,694	$135.17	$121.05 - $150.28
Q2 2025	13,456	$1,690	$124.60	$110.04 - $137.32
Q1 2025	8,416	$1,152	$142.96	$128.51 - $157.09
Q4 2024	7,138	$1,092	$168.67	$145.07 - $195.00
Q3 2024	1,074	$208	$209.21	$188.78 - $238.00
Q3 2023	1,928	$496	$267.47	$251.85 - $287.60