MARATHON OIL CORP

CUSIP: 565849106 Class: COM

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

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

Q3 2010
Shares 479,078 Value ($000) $15,857 Avg Close — Range —
Q2 2010
Shares 186,629 Value ($000) $5,802 Avg Close — Range —
Q1 2010
Shares 164,166 Value ($000) $5,194 Avg Close — Range —
Q4 2009
Shares 129,282 Value ($000) $4,036 Avg Close — Range —
Q3 2009
Shares 261,037 Value ($000) $8,327 Avg Close — Range —
Q2 2009
Shares 268,209 Value ($000) $8,081 Avg Close — Range —
Q1 2009
Shares 243,016 Value ($000) $6,389 Avg Close — Range —
Q4 2008
Shares 35,923 Value ($000) $983 Avg Close — Range —