MARINER ENERGY INC

CUSIP: 56845T305 Class: COMMON STOCK

GLENMEDE TRUST CO NA's Holding History (CIK: 0000314949)

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

Q1 2010
Shares 112,888 Value ($000) $1,689 Avg Close — Range —
Q4 2009
Shares 145,234 Value ($000) $1,686 Avg Close — Range —
Q3 2009
Shares 145,234 Value ($000) $2,059 Avg Close — Range —
Q2 2009
Shares 143,234 Value ($000) $1,682 Avg Close — Range —
Q1 2009
Shares 111,830 Value ($000) $866 Avg Close — Range —
Q4 2008
Shares 117,427 Value ($000) $1,197 Avg Close — Range —
Q3 2008
Shares 40,760 Value ($000) $835 Avg Close — Range —
Q2 2008
Shares 65,915 Value ($000) $2,436 Avg Close — Range —
Q1 2008
Shares 153,443 Value ($000) $4,144 Avg Close — Range —
Q3 2007
Shares 105,780 Value ($000) $2,190 Avg Close — Range —