BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

OAK RIDGE INVESTMENTS LLC's Holding History (CIK: 0001054554)

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

Q4 2017

Shares 21,180 Value ($000) $6,747 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 22,072 Value ($000) $6,911 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 24,478 Value ($000) $6,642 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 23,418 Value ($000) $6,403 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 19,849 Value ($000) $5,629 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 27,825 Value ($000) $8,710 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 28,117 Value ($000) $6,799 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 29,112 Value ($000) $7,578 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 28,272 Value ($000) $8,661 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 28,810 Value ($000) $8,408 Avg Close $330.23 Range $265.00 - $412.24

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	21,180	$6,747	$320.80	$301.81 - $348.84
Q3 2017	22,072	$6,911	$296.11	$269.50 - $330.00
Q2 2017	24,478	$6,642	$264.42	$244.28 - $291.90
Q1 2017	23,418	$6,403	$282.75	$260.50 - $301.42
Q4 2016	19,849	$5,629	$296.43	$268.00 - $329.83
Q3 2016	27,825	$8,710	$296.18	$240.07 - $333.65
Q2 2016	28,117	$6,799	$263.54	$223.02 - $292.69
Q1 2016	29,112	$7,578	$264.15	$242.07 - $301.02
Q4 2015	28,272	$8,661	$287.35	$254.00 - $311.65
Q3 2015	28,810	$8,408	$330.23	$265.00 - $412.24