MARINER ENERGY INC

CUSIP: 56845T305 Class: COMMON STOCK

RATIONAL ADVISORS LLC's Holding History (CIK: 0001143565)

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

Q1 2010
Shares 10,378 Value ($000) $155 Avg Close — Range —
Q4 2009
Shares 10,378 Value ($000) $120 Avg Close — Range —
Q3 2009
Shares 10,378 Value ($000) $147 Avg Close — Range —
Q2 2009
Shares 10,378 Value ($000) $122 Avg Close — Range —
Q1 2009
Shares 10,378 Value ($000) $80 Avg Close — Range —