ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

BAKER BROS. ADVISORS LP's Holding History (CIK: 0001263508)

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

Q1 2021
Shares 3,993,312 Value ($000) $610,617 Avg Close — Range —
Q4 2020
Shares 8,760,794 Value ($000) $1,368,786 Avg Close — Range —
Q3 2020
Shares 8,760,794 Value ($000) $1,002,498 Avg Close — Range —
Q2 2020
Shares 8,760,794 Value ($000) $983,312 Avg Close — Range —
Q1 2020
Shares 8,760,794 Value ($000) $786,632 Avg Close — Range —
Q4 2019
Shares 8,258,068 Value ($000) $893,110 Avg Close — Range —
Q3 2019
Shares 8,258,068 Value ($000) $808,795 Avg Close — Range —
Q2 2019
Shares 8,258,068 Value ($000) $1,081,642 Avg Close — Range —
Q1 2019
Shares 8,558,068 Value ($000) $1,156,880 Avg Close — Range —
Q4 2018
Shares 8,555,894 Value ($000) $833,002 Avg Close — Range —
Q3 2018
Shares 8,555,894 Value ($000) $1,189,355 Avg Close — Range —
Q2 2018
Shares 8,555,894 Value ($000) $1,062,214 Avg Close — Range —
Q1 2018
Shares 8,555,894 Value ($000) $953,640 Avg Close — Range —
Q4 2017
Shares 8,553,864 Value ($000) $1,022,957 Avg Close — Range —
Q3 2017
Shares 8,553,864 Value ($000) $1,200,022 Avg Close — Range —
Q2 2017
Shares 8,553,864 Value ($000) $1,040,749 Avg Close — Range —
Q1 2017
Shares 6,544,130 Value ($000) $793,410 Avg Close — Range —
Q4 2016
Shares 6,543,295 Value ($000) $800,572 Avg Close — Range —
Q3 2016
Shares 6,543,295 Value ($000) $801,815 Avg Close — Range —
Q2 2016
Shares 6,543,295 Value ($000) $763,995 Avg Close — Range —
Q1 2016
Shares 6,542,599 Value ($000) $910,861 Avg Close — Range —
Q4 2015
Shares 6,542,599 Value ($000) $1,248,001 Avg Close — Range —
Q3 2015
Shares 6,542,599 Value ($000) $1,023,197 Avg Close — Range —
Q2 2015
Shares 6,542,599 Value ($000) $1,182,706 Avg Close — Range —