BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Shay Capital LLC's Holding History (CIK: 0001723643)

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

Q3 2025

Shares 9,000 Value ($000) $1,261 Avg Close $135.17 Range $121.05 - $150.28

Q3 2023

Shares 900 Value ($000) $231 Avg Close $267.47 Range $251.85 - $287.60

Q1 2023

Shares 1,756 Value ($000) $488 Avg Close $276.70 Range $254.80 - $295.90

Q3 2022

Shares 7,716 Value ($000) $2,060 Avg Close $212.38 Range $193.65 - $283.44

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	9,000	$1,261	$135.17	$121.05 - $150.28
Q3 2023	900	$231	$267.47	$251.85 - $287.60
Q1 2023	1,756	$488	$276.70	$254.80 - $295.90
Q3 2022	7,716	$2,060	$212.38	$193.65 - $283.44