GULFPORT ENERGY CORP

CUSIP: 402635304 Class: COM NEW

TETRAD CORP's Holding History (CIK: 0000883597)

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

Q3 2011
Shares 18,400 Value ($000) $445 Avg Close — Range —
Q2 2011
Shares 16,000 Value ($000) $475 Avg Close — Range —
Q1 2011
Shares 16,000 Value ($000) $578 Avg Close — Range —