BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

IMC-Chicago, LLC's Holding History (CIK: 0001452861)

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

Q4 2025

Shares 19,011 Value ($000) $3,346 Avg Close $163.37 Range $138.00 - $185.17

Q4 2021

Shares 10,222 Value ($000) $2,452 Avg Close $257.12 Range $221.72 - $290.76

Q3 2021

Shares 11,465 Value ($000) $3,244 Avg Close $327.75 Range $282.64 - $372.12

Q2 2021

Shares 24,405 Value ($000) $8,451 Avg Close $302.94 Range $257.03 - $468.55

Q4 2020

Shares 11,998 Value ($000) $2,938 Avg Close $259.08 Range $223.25 - $363.92

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	19,011	$3,346	$163.37	$138.00 - $185.17
Q4 2021	10,222	$2,452	$257.12	$221.72 - $290.76
Q3 2021	11,465	$3,244	$327.75	$282.64 - $372.12
Q2 2021	24,405	$8,451	$302.94	$257.03 - $468.55
Q4 2020	11,998	$2,938	$259.08	$223.25 - $363.92