ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

ADVENT CAPITAL MANAGEMENT /DE/'s Holding History (CIK: 0001097278)

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

Q4 2017
Shares 10,958 Value ($000) $1,310 Avg Close — Range —
Q4 2016
Shares 600 Value ($000) $73 Avg Close — Range —
Q4 2013
Shares 16,000 Value ($000) $2,126 Avg Close — Range —
Q3 2013
Shares 16,000 Value ($000) $1,859 Avg Close — Range —