BIOGEN INC

Ticker: BIIB CUSIP: 09062X103 Class: COM

WAFRA INC.'s Holding History (CIK: 0000920440)

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

Q1 2019

Shares 44,430 Value ($000) $10,502 Avg Close $314.89 Range $216.12 - $344.00

Q4 2018

Shares 82,175 Value ($000) $24,728 Avg Close $319.14 Range $278.46 - $358.41

Q3 2018

Shares 47,451 Value ($000) $16,765 Avg Close $344.30 Range $288.13 - $388.67

Q4 2015

Shares 3,550 Value ($000) $1,088 Avg Close $287.35 Range $254.00 - $311.65

Q3 2015

Shares 3,550 Value ($000) $1,036 Avg Close $330.23 Range $265.00 - $412.24

Q1 2014

Shares 52,400 Value ($000) $16,028,000 Avg Close $317.43 Range $270.62 - $358.89

Q4 2013

Shares 44,100 Value ($000) $12,329,000 Avg Close $258.65 Range $221.07 - $298.82

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2019	44,430	$10,502	$314.89	$216.12 - $344.00
Q4 2018	82,175	$24,728	$319.14	$278.46 - $358.41
Q3 2018	47,451	$16,765	$344.30	$288.13 - $388.67
Q4 2015	3,550	$1,088	$287.35	$254.00 - $311.65
Q3 2015	3,550	$1,036	$330.23	$265.00 - $412.24
Q1 2014	52,400	$16,028,000	$317.43	$270.62 - $358.89
Q4 2013	44,100	$12,329,000	$258.65	$221.07 - $298.82