BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

SeaTown Holdings Pte. Ltd.'s Holding History (CIK: 0001512367)

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

Q4 2016

Shares 49,325 Value ($000) $13,988 Avg Close $296.43 Range $268.00 - $329.83

Q2 2016

Shares 14,722 Value ($000) $3,560 Avg Close $263.54 Range $223.02 - $292.69

Q1 2016

Shares 38,885 Value ($000) $10,123 Avg Close $264.15 Range $242.07 - $301.02

Q4 2015

Shares 31,400 Value ($000) $9,619 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 31,400 Value ($000) $9,163 Avg Close $330.23 Range $265.00 - $412.24

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	49,325	$13,988	$296.43	$268.00 - $329.83
Q2 2016	14,722	$3,560	$263.54	$223.02 - $292.69
Q1 2016	38,885	$10,123	$264.15	$242.07 - $301.02
Q4 2015	31,400	$9,619	$287.35	$254.00 - $311.65
Q3 2015	31,400	$9,163	$330.23	$265.00 - $412.24