BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

Temasek Holdings (Private) Ltd's Holding History (CIK: 0001021944)

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

Q2 2018

Shares 118,644 Value ($000) $34,435 Avg Close $281.15 Range $249.17 - $310.91

Q1 2018

Shares 118,644 Value ($000) $32,487 Avg Close $310.41 Range $259.76 - $370.57

Q4 2017

Shares 118,644 Value ($000) $37,796 Avg Close $320.80 Range $301.81 - $348.84

Q3 2017

Shares 118,644 Value ($000) $37,150 Avg Close $296.11 Range $269.50 - $330.00

Q2 2017

Shares 95,226 Value ($000) $25,841 Avg Close $264.42 Range $244.28 - $291.90

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	118,644	$34,435	$281.15	$249.17 - $310.91
Q1 2018	118,644	$32,487	$310.41	$259.76 - $370.57
Q4 2017	118,644	$37,796	$320.80	$301.81 - $348.84
Q3 2017	118,644	$37,150	$296.11	$269.50 - $330.00
Q2 2017	95,226	$25,841	$264.42	$244.28 - $291.90