BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

ABN AMRO INVESTMENT SOLUTIONS's Holding History (CIK: 0002080520)

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

Q4 2025

Shares 4,826 Value ($000) $849 Avg Close $163.37 Range $138.00 - $185.17

Q2 2024

Shares 2,118 Value ($000) $491 Avg Close $217.32 Range $189.44 - $237.54

Q4 2023

Shares 14,586 Value ($000) $3,774 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 15,426 Value ($000) $3,965 Avg Close $267.47 Range $251.85 - $287.60

Q1 2023

Shares 1,236 Value ($000) $344 Avg Close $276.70 Range $254.80 - $295.90

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,826	$849	$163.37	$138.00 - $185.17
Q2 2024	2,118	$491	$217.32	$189.44 - $237.54
Q4 2023	14,586	$3,774	$245.62	$220.86 - $269.43
Q3 2023	15,426	$3,965	$267.47	$251.85 - $287.60
Q1 2023	1,236	$344	$276.70	$254.80 - $295.90