BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q2 2025

Shares 16,550 Value ($000) $2,079 Avg Close $124.60 Range $110.04 - $137.32

Q4 2023

Shares 1 Value ($000) $0 Avg Close $245.62 Range $220.86 - $269.43

Q3 2022

Shares 64 Value ($000) $17 Avg Close $212.38 Range $193.65 - $283.44

Q2 2021

Shares 60 Value ($000) $21 Avg Close $302.94 Range $257.03 - $468.55

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2025	16,550	$2,079	$124.60	$110.04 - $137.32
Q4 2023	1	$0	$245.62	$220.86 - $269.43
Q3 2022	64	$17	$212.38	$193.65 - $283.44
Q2 2021	60	$21	$302.94	$257.03 - $468.55