BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Brooklyn Investment Group's Holding History (CIK: 0001795705)

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

Q4 2025

Shares 5,702 Value ($000) $1,008 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 4,256 Value ($000) $537 Avg Close $135.17 Range $121.05 - $150.28

Q2 2025

Shares 4,254 Value ($000) $534 Avg Close $124.60 Range $110.04 - $137.32

Q1 2025

Shares 929 Value ($000) $127 Avg Close $142.96 Range $128.51 - $157.09

Q4 2024

Shares 620 Value ($000) $95 Avg Close $168.67 Range $145.07 - $195.00

Q3 2024

Shares 103 Value ($000) $20 Avg Close $209.21 Range $188.78 - $238.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	5,702	$1,008	$163.37	$138.00 - $185.17
Q3 2025	4,256	$537	$135.17	$121.05 - $150.28
Q2 2025	4,254	$534	$124.60	$110.04 - $137.32
Q1 2025	929	$127	$142.96	$128.51 - $157.09
Q4 2024	620	$95	$168.67	$145.07 - $195.00
Q3 2024	103	$20	$209.21	$188.78 - $238.00