ALEXION PHARMACEUTICALS INC

CUSIP: 015351109 Class: COM

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

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

Q4 2020
Shares 656,409 Value ($000) $102,557 Avg Close — Range —
Q3 2020
Shares 1,436,264 Value ($000) $164,352 Avg Close — Range —
Q2 2020
Shares 1,514,874 Value ($000) $170,029 Avg Close — Range —
Q1 2020
Shares 1,975,191 Value ($000) $177,352 Avg Close — Range —
Q4 2019
Shares 1,720,251 Value ($000) $186,045 Avg Close — Range —
Q3 2019
Shares 1,774,350 Value ($000) $173,780 Avg Close — Range —
Q2 2019
Shares 1,784,279 Value ($000) $233,705 Avg Close — Range —
Q1 2019
Shares 2,188,923 Value ($000) $295,899 Avg Close — Range —
Q4 2018
Shares 2,494,947 Value ($000) $242,908 Avg Close — Range —
Q3 2018
Shares 2,365,078 Value ($000) $328,769 Avg Close — Range —
Q2 2018
Shares 1,496,192 Value ($000) $185,752 Avg Close — Range —
Q1 2018
Shares 9,941 Value ($000) $1,108 Avg Close — Range —