BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Horizon Investment Services, LLC's Holding History (CIK: 0001426940)

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

Q1 2017

Shares 11,352 Value ($000) $3,104 Avg Close $282.75 Range $260.50 - $301.42

Q4 2016

Shares 11,749 Value ($000) $3,332 Avg Close $296.43 Range $268.00 - $329.83

Q3 2016

Shares 12,302 Value ($000) $3,851 Avg Close $296.18 Range $240.07 - $333.65

Q2 2016

Shares 11,537 Value ($000) $2,790 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 9,843 Value ($000) $2,562 Avg Close $264.15 Range $242.07 - $301.02

Q2 2015

Shares 562 Value ($000) $227 Avg Close $401.33 Range $368.88 - $432.88

Q1 2015

Shares 612 Value ($000) $258 Avg Close $394.14 Range $334.40 - $480.18

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2017	11,352	$3,104	$282.75	$260.50 - $301.42
Q4 2016	11,749	$3,332	$296.43	$268.00 - $329.83
Q3 2016	12,302	$3,851	$296.18	$240.07 - $333.65
Q2 2016	11,537	$2,790	$263.54	$223.02 - $292.69
Q1 2016	9,843	$2,562	$264.15	$242.07 - $301.02
Q2 2015	562	$227	$401.33	$368.88 - $432.88
Q1 2015	612	$258	$394.14	$334.40 - $480.18