X0202 4 2008-03-17 0 0000775351 QUEST RESOURCE CORP QRCP 0000902584 ADVISORY RESEARCH INC 180 N. STETSON STREET SUITE 5500 CHICAGO IL 60601 0 0 1 0 0001302631 Advisory Research Microcap Value Fund, L.P. 180 NORTH STETSON AVENUE SUITE 5500 CHICAGO IL 60601 0 0 1 0 0001322311 ADVISORY RESEARCH ENERGY FUND LP 180 NORTH STETSON SUITE 5500 CHICAGO IL 60611 0 0 1 0 COMMON STOCK, PAR VALUE $0.001 PER SHARE 2008-03-17 4 P 0 169592 6.4 A 1503421 I THROUGH ADVISORY RESEARCH MICRO CAP VALUE FUND, L.P. COMMON STOCK, PAR VALUE $0.001 PER SHARE 2008-03-17 4 P 0 64844 6.4 A 1046829 I THROUGH ADVISORY RESEARCH ENERGY FUND, L.P. Advisory Research, Inc. is the general partner and investment manager of Advisory Research Micro Cap Value Fund, L.P. and Advisory Research Energy Fund, L.P. For purposes of Section 16 of the Securities Exchange Act of 1934, each Reporting Person disclaims beneficial ownership of any such securities, except to the extent of its indirect pecuniary interest therein, if any, and this report shall not be deemed an admission that such Reporting Person is the beneficial owner of such securities for purposes of Section 16 or otherwise. /s/ Brien M. O'Brien, Chairman and CEO 2008-03-19