ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

MASSACHUSETTS FINANCIAL SERVICES CO /MA/'s Holding History (CIK: 0000912938)

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

Q3 2017
Shares 111,383 Value ($000) $15,626 Avg Close — Range —
Q2 2017
Shares 111,437 Value ($000) $13,559 Avg Close — Range —
Q1 2017
Shares 644,151 Value ($000) $78,097 Avg Close — Range —
Q4 2016
Shares 651,387 Value ($000) $79,698 Avg Close — Range —
Q3 2016
Shares 1,669,191 Value ($000) $204,543 Avg Close — Range —
Q2 2016
Shares 2,098,074 Value ($000) $244,971 Avg Close — Range —
Q1 2016
Shares 1,729,739 Value ($000) $240,814 Avg Close — Range —
Q4 2015
Shares 2,122,345 Value ($000) $404,838 Avg Close — Range —
Q3 2015
Shares 1,959,177 Value ($000) $306,395 Avg Close — Range —
Q2 2015
Shares 2,148,640 Value ($000) $388,409,653 Avg Close — Range —
Q1 2015
Shares 2,375,250 Value ($000) $411,630,826 Avg Close — Range —
Q4 2014
Shares 2,293,974 Value ($000) $424,454,008 Avg Close — Range —
Q3 2014
Shares 2,127,157 Value ($000) $352,726 Avg Close — Range —
Q2 2014
Shares 2,113,993 Value ($000) $330,313 Avg Close — Range —
Q1 2014
Shares 1,831,121 Value ($000) $278,568,438 Avg Close — Range —
Q4 2013
Shares 1,785,181 Value ($000) $237,221,991 Avg Close — Range —
Q3 2013
Shares 1,358,805 Value ($000) $157,838,788 Avg Close — Range —
Q2 2013
Shares 1,149,787 Value ($000) $106,056,353 Avg Close — Range —