VOCERA COMMUNICATIONS INC

CUSIP: 92857F107 Class: COMMON STOCK

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

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

Q4 2021
Shares 1,450 Value ($000) $115 Avg Close — Range —
Q3 2021
Shares 1,450 Value ($000) $66 Avg Close — Range —
Q2 2021
Shares 1,450 Value ($000) $58 Avg Close — Range —
Q1 2021
Shares 1,450 Value ($000) $56 Avg Close — Range —
Q4 2020
Shares 1,450 Value ($000) $60 Avg Close — Range —
Q3 2020
Shares 1,350 Value ($000) $39 Avg Close — Range —