Fourth Supplemental Indenture for 6.0% Senior Subordinated Notes Due 2015 Sample Contracts

DENBURY RESOURCES INC. and WELLS FARGO BANK, NATIONAL ASSOCIATION as Trustee FOURTH SUPPLEMENTAL INDENTURE FOR 6.0% SENIOR SUBORDINATED NOTES DUE 2015 Dated as of February 3, 2011 Denbury Resources Inc. Guarantor Supplemental Indenture 6.0% Notes due 2015
Fourth Supplemental Indenture for 6.0% Senior Subordinated Notes Due 2015 • March 1st, 2011 • Denbury Resources Inc • Crude petroleum & natural gas • New York

FOURTH SUPPLEMENTAL INDENTURE (this “Supplemental Indenture”), dated as of February 3, 2011, among DENBURY RESOURCES INC., a Delaware corporation (the “Company”), on behalf of itself and the Subsidiary Guarantors (the “Existing Subsidiary Guarantors”) under the Indenture referred to below, WELLS FARGO BANK, NATIONAL ASSOCIATION, as trustee under the Indenture referred to below (the “Trustee”) and the following indirect, wholly-owned subsidiaries of the Company, referred to herein collectively as the “New Subsidiary Guarantors”: