BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Alpha Family Trust's Holding History (CIK: 0001568991)

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

Q4 2025

Shares 1,540 Value ($000) $271 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 1,540 Value ($000) $216 Avg Close $135.17 Range $121.05 - $150.28

Q2 2024

Shares 1,050 Value ($000) $243 Avg Close $217.32 Range $189.44 - $237.54

Q4 2022

Shares 810 Value ($000) $224 Avg Close $282.44 Range $250.31 - $311.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,540	$271	$163.37	$138.00 - $185.17
Q3 2025	1,540	$216	$135.17	$121.05 - $150.28
Q2 2024	1,050	$243	$217.32	$189.44 - $237.54
Q4 2022	810	$224	$282.44	$250.31 - $311.88