Exhibit 4 ANADARKO PETROLEUM CORPORATION SUPPLEMENTAL INDENTURE NO. 3 THIS SUPPLEMENTAL INDENTURE NO. 3, dated as of March 7, 2000, between Anadarko Petroleum Corporation, a corporation duly organized and existing under the laws of the State of...Supplemental Indenture • March 7th, 2000 • Anadarko Petroleum Corp • Crude petroleum & natural gas • New York
