BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

REGENTS OF THE UNIVERSITY OF CALIFORNIA's Holding History (CIK: 0000315054)

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

Q1 2015

Shares 2,400 Value ($000) $1,013 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 2,100 Value ($000) $713 Avg Close $323.51 Range $290.85 - $361.93

Q2 2013

Shares 10,855 Value ($000) $2,336 Avg Close $213.68 Range $191.80 - $242.64

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2015	2,400	$1,013	$394.14	$334.40 - $480.18
Q4 2014	2,100	$713	$323.51	$290.85 - $361.93
Q2 2013	10,855	$2,336	$213.68	$191.80 - $242.64