ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

LOOMIS SAYLES & CO L P's Holding History (CIK: 0000312348)

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

Q4 2018
Shares 18,480 Value ($000) $1,799 Avg Close — Range —
Q3 2018
Shares 36,717 Value ($000) $5,104 Avg Close — Range —
Q2 2018
Shares 120,993 Value ($000) $15,021 Avg Close — Range —
Q1 2018
Shares 179,292 Value ($000) $19,984 Avg Close — Range —
Q4 2017
Shares 182,330 Value ($000) $21,805 Avg Close — Range —
Q3 2017
Shares 118,055 Value ($000) $16,562 Avg Close — Range —
Q2 2017
Shares 165,552 Value ($000) $20,143 Avg Close — Range —
Q1 2017
Shares 82,003 Value ($000) $9,942 Avg Close — Range —
Q4 2016
Shares 162,054 Value ($000) $19,827 Avg Close — Range —
Q3 2016
Shares 195,334 Value ($000) $23,937 Avg Close — Range —
Q2 2016
Shares 217,694 Value ($000) $25,418 Avg Close — Range —
Q1 2016
Shares 592,479 Value ($000) $82,485 Avg Close — Range —
Q4 2015
Shares 548,911 Value ($000) $104,705 Avg Close — Range —
Q3 2015
Shares 489,567 Value ($000) $76,564 Avg Close — Range —
Q2 2015
Shares 419,324 Value ($000) $75,801 Avg Close — Range —
Q4 2013
Shares 22,106 Value ($000) $2,941 Avg Close — Range —