X0201 42003-12-2600000318107PRIMA ENERGY CORP PENG0001228526LEWIS RICHARD H1099 18TH STREETSUITE 400DENVERCO80202-19081100PresidentCommon stock23281.0000IESOP TrustCommon stock112500.0000Iby SpouseCommon stock5730.0000Iby ChildrenCommon stock2003-12-294S05000.000034.4800D180027.0000Iby Family Limited PartnershipCommon stock2003-12-264S02165.000034.2500D1057788.0000DStock options4.41002005-05-21Common stock168750.0000168750.0000DStock options6.67002008-09-17Common stock225000.0000225000.0000DStock options33.25002011-03-11Common stock100000.0000100000.0000DStock options26.38002012-03-18Common stock25000.000025000.0000DStock options20.19002013-05-12Common stock7500.00007500.0000DStock options23.04002013-08-11Common stock7500.00007500.0000DStock options vest 20% per year over five years.Richard H. Lewis2003-12-30