| 2017-03-01 | ALEXION PHARMACEUTICALS, INC. | S | ▼−404 sh | $132.50 | ▼−$53.5K | 39,161 |
| 2017-02-28 | ALEXION PHARMACEUTICALS, INC. | A | +6,500 sh | — | — | 39,565 |
| 2017-02-28 | ALEXION PHARMACEUTICALS, INC. | S | ▼−915 sh | $131.71 | ▼−$121K | 33,065 |
| 2017-02-28 | ALEXION PHARMACEUTICALS, INC. | A | +12.8K sh | — | — | 25,600 |
| 2017-02-27 | ALEXION PHARMACEUTICALS, INC. | S | ▼−860 sh | $131.20 | ▼−$113K | 33,980 |
| 2017-02-09 | ALEXION PHARMACEUTICALS, INC. | S | ▼−167 sh | $126.84 | ▼−$21.2K | 34,840 |
| 2017-02-07 | ALEXION PHARMACEUTICALS, INC. | S | ▼−166 sh | $128.09 | ▼−$21.3K | 35,007 |
| 2017-02-06 | ALEXION PHARMACEUTICALS, INC. | S | ▼−24 sh | $126.65 | ▼−$3,039.6 | 35,173 |
| 2017-02-06 | ALEXION PHARMACEUTICALS, INC. | S | ▼−3,380 sh | $125.69 | ▼−$425K | 35,197 |
| 2016-08-30 | ALEXION PHARMACEUTICALS, INC. | S | ▼−1,000 sh | $127.76 | ▼−$128K | 38,577 |
| 2016-08-08 | ALEXION PHARMACEUTICALS, INC. | S | ▼−165 sh | $137.14 | ▼−$22.6K | 39,577 |
| 2016-02-29 | ALEXION PHARMACEUTICALS, INC. | S | ▼−1,312 sh | $138.91 | ▼−$182K | 39,742 |
| 2016-02-26 | ALEXION PHARMACEUTICALS, INC. | A | +7,000 sh | — | — | 41,054 |
| 2016-02-26 | ALEXION PHARMACEUTICALS, INC. | A | +31K sh | $140.16 | +$4.34M | 31,000 |
| 2016-02-08 | ALEXION PHARMACEUTICALS, INC. | S | ▼−79 sh | $139.13 | ▼−$11K | 36,455 |
| 2016-02-08 | ALEXION PHARMACEUTICALS, INC. | S | ▼−2,401 sh | $138.02 | ▼−$331K | 34,054 |
| 2016-02-08 | ALEXION PHARMACEUTICALS, INC. | S | ▼−185 sh | $138.02 | ▼−$25.5K | 36,534 |
| 2016-02-05 | ALEXION PHARMACEUTICALS, INC. | S | ▼−100 sh | $145.38 | ▼−$14.5K | 38,612 |
| 2016-02-05 | ALEXION PHARMACEUTICALS, INC. | S | ▼−300 sh | $144.33 | ▼−$43.3K | 38,312 |
| 2016-02-05 | ALEXION PHARMACEUTICALS, INC. | S | ▼−100 sh | $143.58 | ▼−$14.4K | 38,212 |
| 2016-02-05 | ALEXION PHARMACEUTICALS, INC. | S | ▼−160 sh | $142.15 | ▼−$22.7K | 38,052 |
| 2016-02-05 | ALEXION PHARMACEUTICALS, INC. | S | ▼−400 sh | $141.42 | ▼−$56.6K | 37,652 |
| 2016-02-05 | ALEXION PHARMACEUTICALS, INC. | S | ▼−933 sh | $140.44 | ▼−$131K | 36,719 |
| 2016-02-04 | ALEXION PHARMACEUTICALS, INC. | A | +11.8K sh | — | — | 38,712 |
| 2016-02-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−4 sh | $145.13 | ▼−$580.52 | 26,949 |
| 2016-02-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−203 sh | $143.81 | ▼−$29.2K | 26,953 |
| 2015-09-01 | ALEXION PHARMACEUTICALS, INC. | S | ▼−305 sh | $168.62 | ▼−$51.4K | 27,156 |
| 2015-08-07 | ALEXION PHARMACEUTICALS, INC. | S | ▼−163 sh | $190.01 | ▼−$31K | 27,461 |
| 2015-08-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−185 sh | $196.52 | ▼−$36.4K | 27,624 |
| 2015-03-02 | ALEXION PHARMACEUTICALS, INC. | S | ▼−706 sh | $180.34 | ▼−$127K | 27,809 |
| 2015-02-27 | ALEXION PHARMACEUTICALS, INC. | A | +5,100 sh | — | — | 26,770 |
| 2015-02-27 | ALEXION PHARMACEUTICALS, INC. | A | +24.4K sh | — | — | 24,400 |
| 2015-02-27 | ALEXION PHARMACEUTICALS, INC. | A | +5,874 sh | — | — | 5,874 |
| 2015-02-27 | ALEXION PHARMACEUTICALS, INC. | A | +1,745 sh | — | — | 28,515 |
| 2015-02-10 | ALEXION PHARMACEUTICALS, INC. | S | ▼−1,490 sh | $171.15 | ▼−$255K | 21,670 |
| 2015-02-09 | ALEXION PHARMACEUTICALS, INC. | S | ▼−1,665 sh | $173.75 | ▼−$289K | 23,160 |
| 2015-02-05 | ALEXION PHARMACEUTICALS, INC. | A | +8,760 sh | — | — | 24,825 |
| 2015-02-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−203 sh | $174.38 | ▼−$35.4K | 16,069 |
| 2015-02-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−4 sh | $172.79 | ▼−$691.16 | 16,065 |
| 2014-12-04 | ALEXION PHARMACEUTICALS, INC. | M | +10K sh | $57.02 | +$570K | 26,272 |
| 2014-12-04 | ALEXION PHARMACEUTICALS, INC. | M | −10K sh | $57.02 | −$570K | 14,375 |
| 2014-12-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−10K sh | $196.25 | ▼−$1.96M | 16,272 |
| 2014-09-02 | ALEXION PHARMACEUTICALS, INC. | S | ▼−304 sh | $169.46 | ▼−$51.5K | 16,272 |
| 2014-08-04 | ALEXION PHARMACEUTICALS, INC. | S | ▼−184 sh | $158.23 | ▼−$29.1K | 16,576 |
| 2014-03-03 | ALEXION PHARMACEUTICALS, INC. | S | ▼−305 sh | $174.77 | ▼−$53.3K | 16,760 |
| 2014-02-28 | ALEXION PHARMACEUTICALS, INC. | A | +36.9K sh | $176.80 | +$6.52M | 36,900 |
| 2014-02-28 | ALEXION PHARMACEUTICALS, INC. | A | +3,300 sh | — | — | 17,065 |
| 2014-02-07 | ALEXION PHARMACEUTICALS, INC. | S | ▼−6 sh | $157.64 | ▼−$945.84 | 13,765 |
| 2014-02-07 | ALEXION PHARMACEUTICALS, INC. | S | ▼−1,000 sh | $155.55 | ▼−$156K | 13,771 |
| 2014-02-06 | ALEXION PHARMACEUTICALS, INC. | A | +6,068 sh | — | — | 14,771 |