BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

ADAR1 Capital Management, LLC's Holding History (CIK: 0001940272)

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

Q4 2025

Shares 24,300 Value ($000) $4,277 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 18,000 Value ($000) $2,521 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 5,100 Value ($000) $641 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 4,500 Value ($000) $616 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 3,045 Value ($000) $466 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 29,625 Value ($000) $5,743 Avg Close $209.21 Range $188.78 - $238.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	24,300	$4,277	$163.37	$138.00 - $185.17
Q3 2025	18,000	$2,521	$135.17	$121.05 - $150.28
Q2 2025	5,100	$641	$124.60	$110.04 - $137.32
Q1 2025	4,500	$616	$142.96	$128.51 - $157.09
Q4 2024	3,045	$466	$168.67	$145.07 - $195.00
Q3 2024	29,625	$5,743	$209.21	$188.78 - $238.00