BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

DAVIS-REA LTD.'s Holding History (CIK: 0001482171)

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

Q3 2015

Shares 7,445 Value ($000) $2,168 Avg Close $330.23 Range $265.00 - $412.24

Q2 2015

Shares 5,133 Value ($000) $2,073 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 4,995 Value ($000) $2,109 Avg Close $394.14 Range $334.40 - $480.18

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2015	7,445	$2,168	$330.23	$265.00 - $412.24
Q2 2015	5,133	$2,073	$401.33	$368.88 - $432.88
Q1 2015	4,995	$2,109	$394.14	$334.40 - $480.18