TGC INDS INC

CUSIP: 872417308 Class: CMN

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

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

Q3 2013
Shares 10,500 Value ($000) $83 Avg Close — Range —
Q2 2013
Shares 10,500 Value ($000) $86 Avg Close — Range —