BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

SIT INVESTMENT ASSOCIATES INC's Holding History (CIK: 0000769317)

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

Q4 2016

Shares 5,320 Value ($000) $1,509 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 4,870 Value ($000) $1,524 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 5,020 Value ($000) $1,214 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 7,565 Value ($000) $1,969 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 7,665 Value ($000) $2,348 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 7,865 Value ($000) $2,295 Avg Close $330.23 Range $265.00 - $412.24

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	5,320	$1,509	$296.43	$268.00 - $329.83
Q3 2016	4,870	$1,524	$296.18	$240.07 - $333.65
Q2 2016	5,020	$1,214	$263.54	$223.02 - $292.69
Q1 2016	7,565	$1,969	$264.15	$242.07 - $301.02
Q4 2015	7,665	$2,348	$287.35	$254.00 - $311.65
Q3 2015	7,865	$2,295	$330.23	$265.00 - $412.24