PETROLEUM DEV CORP

CUSIP: 716578109 Class: COMMON STOCK

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

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

Q4 2007
Shares 2 Value ($000) $0 Avg Close — Range —
Q4 2006
Shares 2 Value ($000) $0 Avg Close — Range —