WEST CORP

CUSIP: 952355204 Class: COM

NISA INVESTMENT ADVISORS, LLC's Holding History (CIK: 0000937615)

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

Q3 2017
Shares 6,860 Value ($000) $161 Avg Close — Range —
Q2 2017
Shares 6,860 Value ($000) $160 Avg Close — Range —
Q1 2017
Shares 14,860 Value ($000) $363 Avg Close — Range —
Q4 2016
Shares 6,800 Value ($000) $168 Avg Close — Range —
Q3 2016
Shares 4,300 Value ($000) $95 Avg Close — Range —
Q2 2016
Shares 300 Value ($000) $6 Avg Close — Range —
Q1 2016
Shares 300 Value ($000) $7 Avg Close — Range —