BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

GTS SECURITIES LLC's Holding History (CIK: 0001452765)

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

Q4 2025

Shares 1,145 Value ($000) $202 Avg Close $163.37 Range $138.00 - $185.17

Q3 2025

Shares 3,340 Value ($000) $468 Avg Close $135.17 Range $121.05 - $150.28

Q3 2024

Shares 13,294 Value ($000) $2,577 Avg Close $209.21 Range $188.78 - $238.00

Q2 2024

Shares 13,918 Value ($000) $3,226 Avg Close $217.32 Range $189.44 - $237.54

Q4 2023

Shares 15,981 Value ($000) $4,135 Avg Close $245.62 Range $220.86 - $269.43

Q3 2023

Shares 15,323 Value ($000) $3,938 Avg Close $267.47 Range $251.85 - $287.60

Q2 2023

Shares 11,088 Value ($000) $3,158 Avg Close $297.86 Range $273.39 - $319.76

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	1,145	$202	$163.37	$138.00 - $185.17
Q3 2025	3,340	$468	$135.17	$121.05 - $150.28
Q3 2024	13,294	$2,577	$209.21	$188.78 - $238.00
Q2 2024	13,918	$3,226	$217.32	$189.44 - $237.54
Q4 2023	15,981	$4,135	$245.62	$220.86 - $269.43
Q3 2023	15,323	$3,938	$267.47	$251.85 - $287.60
Q2 2023	11,088	$3,158	$297.86	$273.39 - $319.76