AGREEMENT AND PLAN OF MERGER DATED AS OF JUNE 9, 2004 BY AND AMONG PETRO-CANADA (US) HOLDINGS LTD., RAVEN ACQUISITION CORP. AND PRIMA ENERGY CORPORATIONAgreement and Plan of Merger • June 11th, 2004 • Prima Energy Corp • Crude petroleum & natural gas • Delaware
Contract Type FiledJune 11th, 2004 Company Industry JurisdictionAGREEMENT AND PLAN OF MERGER, dated as of June 9, 2004 (the “Agreement”), by and among PETRO-CANADA (US) HOLDINGS LTD., a Delaware corporation (“Parent”), RAVEN ACQUISITION CORP., a Delaware corporation and a wholly-owned subsidiary of Parent (“Merger Subsidiary”), and PRIMA ENERGY CORPORATION, a Delaware corporation (the “Company”). Certain terms used in this Agreement are used as defined in Article VIII.