PETROHAWK ENERGY CORP

CUSIP: 716495106 Class: COM

RiverFront Investment Group, LLC's Holding History (CIK: 0001469751)

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

Q2 2011
Shares 229,700 Value ($000) $5,667 Avg Close — Range —
Q1 2011
Shares 225,008 Value ($000) $5,522 Avg Close — Range —
Q4 2010
Shares 215,023 Value ($000) $3,924 Avg Close — Range —
Q3 2010
Shares 207,948 Value ($000) $3,356 Avg Close — Range —
Q2 2010
Shares 207,010 Value ($000) $3,513 Avg Close — Range —