BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Zweig-DiMenna Associates LLC's Holding History (CIK: 0001533950)

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

Q1 2017

Shares 900 Value ($000) $246 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 900 Value ($000) $255 Avg Close $296.43 Range $268.00 - $329.83

Q4 2015

Shares 30,000 Value ($000) $9,191 Avg Close $287.35 Range $254.00 - $311.65

Q2 2015

Shares 11,185 Value ($000) $4,518 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 72,197 Value ($000) $30,484 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 4,900 Value ($000) $1,663 Avg Close $323.51 Range $290.85 - $361.93

Q3 2014

Shares 38,837 Value ($000) $12,848 Avg Close $329.72 Range $298.31 - $349.00

Q2 2014

Shares 800 Value ($000) $252 Avg Close $300.97 Range $272.02 - $322.25

Q1 2014

Shares 26,775 Value ($000) $8,190 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 900 Value ($000) $252 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	900	$246	$282.75	$260.50 - $301.42
Q4 2016	900	$255	$296.43	$268.00 - $329.83
Q4 2015	30,000	$9,191	$287.35	$254.00 - $311.65
Q2 2015	11,185	$4,518	$401.33	$368.88 - $432.88
Q1 2015	72,197	$30,484	$394.14	$334.40 - $480.18
Q4 2014	4,900	$1,663	$323.51	$290.85 - $361.93
Q3 2014	38,837	$12,848	$329.72	$298.31 - $349.00
Q2 2014	800	$252	$300.97	$272.02 - $322.25
Q1 2014	26,775	$8,190	$317.43	$270.62 - $358.89
Q4 2013	900	$252	$258.65	$221.07 - $298.82