0001193125-06-053543 Sample Contracts

FIFTH SUPPLEMENTAL INDENTURE DATED AS OF NOVEMBER 14, 2005
Fifth Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS FIFTH SUPPLEMENTAL INDENTURE, dated as of November 14, 2005 is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York, as Trustee.

SIXTH SUPPLEMENTAL INDENTURE DATED AS OF FEBRUARY 24, 2006
Sixth Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS SIXTH SUPPLEMENTAL INDENTURE, dated as of February 24, 2006 is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York, as Trustee.

NINTH SUPPLEMENTAL INDENTURE DATED AS OF NOVEMBER 14, 2005
Ninth Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS NINTH SUPPLEMENTAL INDENTURE, dated as of November 14, 2005, is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York, as Trustee.

SIXTH SUPPLEMENTAL INDENTURE DATED AS OF NOVEMBER 14, 2005
Sixth Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS SIXTH SUPPLEMENTAL INDENTURE, dated as of November 14, 2005, is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York, as Trustee.

FOURTH SUPPLEMENTAL INDENTURE DATED AS OF NOVEMBER 14, 2005
Fourth Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS FOURTH SUPPLEMENTAL INDENTURE, dated as of November 14, 2005, is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York Trust Company, N.A., as Trustee.

FIRST SUPPLEMENTAL INDENTURE DATED AS OF NOVEMBER 14, 2005
First Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS FIRST SUPPLEMENTAL INDENTURE, dated as of November 14, 2005, is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York Trust Company, N.A., as Trustee.

AMENDMENT NO. 2 TO RIGHTS AGREEMENT BETWEEN CHESAPEAKE ENERGY CORPORATION AND UMB BANK, N.A., AS RIGHTS AGENT
Rights Agreement • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS AMENDMENT NO. 2 TO RIGHTS AGREEMENT (this “Second Amendment”), dated as of March 3, 2006, is by and between Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), and UMB Bank, N.A., as Rights Agent (the “Rights Agent”).

EIGHTH SUPPLEMENTAL INDENTURE DATED AS OF NOVEMBER 14, 2005
Eighth Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS EIGHTH SUPPLEMENTAL INDENTURE, dated as of November 14, 2005, is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York, as Trustee.

SECOND SUPPLEMENTAL INDENTURE DATED AS OF FEBRUARY 1, 2006
Second Supplemental Indenture • March 14th, 2006 • Chesapeake Energy Corp • Crude petroleum & natural gas

THIS SECOND SUPPLEMENTAL INDENTURE, dated as of February 1, 2006, is among Chesapeake Energy Corporation, an Oklahoma corporation (the “Company”), each of the parties identified under the caption “Subsidiary Guarantors” on the signature page hereto (the “Subsidiary Guarantors”) and The Bank of New York Trust Company, N.A., as Trustee.