PLAINS EXPLORATION & PRO

CUSIP: 726505AL4 Class: CORP

ADVENT CAPITAL MANAGEMENT /DE/'s Holding History (CIK: 0001097278)

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

Q1 2014
Shares 3,000,000 Value ($000) $3,315 Avg Close — Range —
Q4 2013
Shares 3,000,000 Value ($000) $3,305 Avg Close — Range —
Q3 2013
Shares 1,000,000 Value ($000) $1,070 Avg Close — Range —
Q2 2013
Shares 1,000,000 Value ($000) $1,060 Avg Close — Range —