BLACK BOX CORP DEL

CUSIP: 091826107 Class: COMMON STOCK

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

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

Q2 2017
Shares 1,600 Value ($000) $14 Avg Close — Range —
Q1 2017
Shares 6,600 Value ($000) $59 Avg Close — Range —
Q4 2016
Shares 2,400 Value ($000) $37 Avg Close — Range —
Q3 2016
Shares 2,400 Value ($000) $33 Avg Close — Range —
Q2 2016
Shares 2,400 Value ($000) $31 Avg Close — Range —
Q1 2016
Shares 17,600 Value ($000) $237 Avg Close — Range —