BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Violich Capital Management, Inc.'s Holding History (CIK: 0001326766)

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

Q4 2018

Shares 725 Value ($000) $218 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 725 Value ($000) $256 Avg Close $344.30 Range $288.13 - $388.67

Q2 2018

Shares 725 Value ($000) $210 Avg Close $281.15 Range $249.17 - $310.91

Q4 2017

Shares 725 Value ($000) $231 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 725 Value ($000) $227 Avg Close $296.11 Range $269.50 - $330.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	725	$218	$319.14	$278.46 - $358.41
Q3 2018	725	$256	$344.30	$288.13 - $388.67
Q2 2018	725	$210	$281.15	$249.17 - $310.91
Q4 2017	725	$231	$320.80	$301.81 - $348.84
Q3 2017	725	$227	$296.11	$269.50 - $330.00