X0306 4 2012-12-31 0 0000216851 PETROLEUM & RESOURCES CORP PEO 0001202949 OBER DOUGLAS G 7 ST PAUL STREET STE 1140 BALTIMORE MD 21202 1 1 0 0 Chairman & CEO Common Stock 2012-12-31 5 J 0 E 290.3 0 A 16525.47 D Common Stock 2012-12-31 5 J 0 E 927.03 0 A 37412.67 I Issuer's Thrift Plan Trust Common Stock 2013-01-10 4 A 0 3750 25 A 20275.47 D These shares were acquired in exempt transactions as a result of dividend reinvestment. The Issuer's stock traded in a range of $22.08 - $27.26 during 2012. These shares are held by the Issuer's Thrift Plan Trust and represent the undersigned's proportionate beneficial interest in the shares acquired by the Trust in 2012 in exempt transactions as a result of periodic contributions made during 2012 and shares acquired by the Trustee through dividend reinvestment in 2012. The Issuer's stock traded in a range of $22.08 - $27.26 during 2012. The undersigned voluntarily reported the acquisition by the Trust of some of these shares by including them in the share amount totals and/or describing them in the footnotes in a Form 4 filed by the undersigned on November 26, 2012. 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, 2012. This number includes the shares acquired in exempt transactions through periodic contributions made during 2012, 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 during 2012. The Issuer's stock traded in a range of $22.08 - $27.26 during 2012. N/A. Restricted Stock Grant. Shares will vest in 2016. Douglas G. Ober 2013-01-14