X0202 4 2008-01-10 0 0000216851 PETROLEUM & RESOURCES CORP PEO 0001202949 OBER DOUGLAS G 7 ST PAUL STREET STE 1140 BALTIMORE MD 21202 1 1 0 0 Chairman, President & CEO Common Stock 2007-12-31 5 J 0 E 58 0 A 7270 D Common Stock 2008-01-10 4 A 0 2499 0 A 9769 D Common Stock 2007-12-31 5 J 0 E 2372 0 A 24528 I By Issuer's Thrift Plan Trust These shares were acquired in exempt transactions as a result of dividend reinvestment. N/A. Restricted Stock Grant. Shares will vest in 2011. The number of shares reported as held by the Issuer's Thrift Plan Trust represents the undersigned's proportionate beneficial interest in such stock held in the Trust. Such number is based on information as of December 31, 2007, the most recent date as of which such information is available. This number reflects periodic contributions made during 2007, shares acquired by the Trustee through dividend reinvestment, and changes in the number of shares previously reported due to fluctuations in the market price and interests in the Trust. Shares were acquired by the Trustee at various times during 2007. The Issuer's stock traded in a range of $42.48-31.02 during 2007. Douglas G. Ober 2008-01-11