BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Stelac Advisory Services LLC's Holding History (CIK: 0001519676)

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

Q1 2018

Shares 600 Value ($000) $164 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 600 Value ($000) $191 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 600 Value ($000) $188 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 600 Value ($000) $163 Avg Close $264.42 Range $244.28 - $291.90

Q1 2017

Shares 600 Value ($000) $164 Avg Close $282.75 Range $260.50 - $301.42

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	600	$164	$310.41	$259.76 - $370.57
Q4 2017	600	$191	$320.80	$301.81 - $348.84
Q3 2017	600	$188	$296.11	$269.50 - $330.00
Q2 2017	600	$163	$264.42	$244.28 - $291.90
Q1 2017	600	$164	$282.75	$260.50 - $301.42