BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Kovack Advisors, Inc.'s Holding History (CIK: 0001728321)

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

Q1 2018

Shares 781 Value ($000) $214 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 938 Value ($000) $272 Avg Close $320.80 Range $301.81 - $348.84

Q1 2015

Shares 594 Value ($000) $251 Avg Close $394.14 Range $334.40 - $480.18

Q4 2014

Shares 658 Value ($000) $223 Avg Close $323.51 Range $290.85 - $361.93

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	781	$214	$310.41	$259.76 - $370.57
Q4 2017	938	$272	$320.80	$301.81 - $348.84
Q1 2015	594	$251	$394.14	$334.40 - $480.18
Q4 2014	658	$223	$323.51	$290.85 - $361.93