ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q3 2018
Shares 288,329 Value ($000) $40,081 Avg Close — Range —
Q2 2018
Shares 236,585 Value ($000) $29,372 Avg Close — Range —
Q1 2018
Shares 239,080 Value ($000) $26,648 Avg Close — Range —
Q3 2017
Shares 453,167 Value ($000) $63,575 Avg Close — Range —
Q2 2017
Shares 331,270 Value ($000) $40,306 Avg Close — Range —
Q1 2017
Shares 359,212 Value ($000) $43,551 Avg Close — Range —