EXHIBIT 99.5 EXECUTION COPY VOTING AGREEMENT, dated as of April 6, 2004 (the "Agreement"), among KERR-MCGEE CORPORATION, a Delaware corporation ("Parent"), and each of the stockholders listed on Schedule I to this Agreement (each, a "Stockholder" and,...Voting Agreement • April 8th, 2004 • Kerr McGee Corp /De • Crude petroleum & natural gas • Nevada
Exhibit 99.7 REGISTRATION RIGHTS AGREEMENT (this "Agreement"), dated as of April 6, 2004, by and among KERR-MCGEE CORPORATION, a Delaware corporation ("Parent"), WESTPORT ENERGY LLC, a Delaware limited liability company ("WELLC"), MEDICOR FOUNDATION,...Registration Rights Agreement • April 8th, 2004 • Kerr McGee Corp /De • Crude petroleum & natural gas • New York
amongAgreement and Plan of Merger • April 8th, 2004 • Kerr McGee Corp /De • Crude petroleum & natural gas • Nevada
EXHIBIT 99.6 EXECUTION COPY VOTING AGREEMENT, dated as of April 6, 2004 (the "Agreement"), among KERR-MCGEE CORPORATION, a Delaware corporation ("Parent"), and each of the stockholders listed on Schedule I to this Agreement (each, a "Stockholder" and,...Voting Agreement • April 8th, 2004 • Kerr McGee Corp /De • Crude petroleum & natural gas • Nevada
EXHIBIT 99.3 EXECUTION COPY VOTING AGREEMENT, dated as of April 6, 2004 (the "Agreement"), among KERR-MCGEE CORPORATION, a Delaware corporation ("Parent"), and each of the stockholders listed on Schedule I to this Agreement (each, a "Stockholder" and,...Voting Agreement • April 8th, 2004 • Kerr McGee Corp /De • Crude petroleum & natural gas • Nevada
