WEST CORP

CUSIP: 952355204 Class: COM

Alyeska Investment Group, L.P.'s Holding History (CIK: 0001453072)

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

Q3 2015
Shares 821,664 Value ($000) $18,405 Avg Close — Range —
Q2 2015
Shares 1,480,278 Value ($000) $44,556 Avg Close — Range —
Q1 2015
Shares 1,115,774 Value ($000) $37,635 Avg Close — Range —