GLOBAL GEOPHYSICAL SVCS INC

CUSIP: 37946S107 Class: CMN

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2013
Shares 41,030 Value ($000) $66 Avg Close — Range —
Q3 2013
Shares 41,030 Value ($000) $111 Avg Close — Range —
Q2 2013
Shares 39,780 Value ($000) $188 Avg Close — Range —
Q1 2013
Shares 33,653 Value ($000) $82 Avg Close — Range —