BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Caitong International Asset Management Co., Ltd's Holding History (CIK: 0001963355)

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

Q3 2025

Shares 382 Value ($000) $54 Avg Close $135.17 Range $121.05 - $150.28

Q1 2025

Shares 448 Value ($000) $61 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 148 Value ($000) $23 Avg Close $168.67 Range $145.07 - $195.00

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	382	$54	$135.17	$121.05 - $150.28
Q1 2025	448	$61	$142.96	$128.51 - $157.09
Q4 2024	148	$23	$168.67	$145.07 - $195.00