GLOBAL GEOPHYSICAL SVCS INC

CUSIP: 37946S107 Class: CMN

Tower Research Capital LLC (TRC)'s Holding History (CIK: 0001533421)

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

Q1 2014
Shares 24,163 Value ($000) $3 Avg Close — Range —
Q3 2013
Shares 8,826 Value ($000) $24 Avg Close — Range —
Q2 2013
Shares 1,600 Value ($000) $8 Avg Close — Range —