BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q2 2020

Shares 900 Value ($000) $241 Avg Close $300.59 Range $257.60 - $350.24

Q1 2020

Shares 900 Value ($000) $285 Avg Close $303.47 Range $262.25 - $374.99

Q4 2019

Shares 1,200 Value ($000) $356 Avg Close $277.46 Range $219.70 - $318.00

Q3 2019

Shares 1,200 Value ($000) $279 Avg Close $232.85 Range $215.78 - $246.99

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2020	900	$241	$300.59	$257.60 - $350.24
Q1 2020	900	$285	$303.47	$262.25 - $374.99
Q4 2019	1,200	$356	$277.46	$219.70 - $318.00
Q3 2019	1,200	$279	$232.85	$215.78 - $246.99