UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549


                                    FORM 8-K

                                 CURRENT REPORT

                         PURSUANT TO SECTION 13 OR 15(D)
                                     OF THE
                         SECURITIES EXCHANGE ACT OF 1934



                DATE OF REPORT (DATE OF EARLIEST EVENT REPORTED)
-------------------------------------------------------------------------------
                      DECEMBER 29, 2004 (DECEMBER 29, 2004)


                          CHESAPEAKE ENERGY CORPORATION
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             (Exact name of Registrant as specified in its Charter)


            OKLAHOMA                   1-13726                   73-1395733
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  (State or other jurisdiction   (Commission File No.)         (IRS Employer
       of incorporation)                                    Identification No.)


  6100 NORTH WESTERN AVENUE, OKLAHOMA CITY, OKLAHOMA               73118
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     (Address of principal executive offices)                   (Zip Code)


                                 (405) 848-8000
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              (Registrant's telephone number, including area code)


Check  the  appropriate  box  below  if the  Form  8-K  filing  is  intended  to
simultaneously  satisfy the filing obligation of the registrant under any of the
following provisions (see General Instruction A.2. below):

[X] Written communications pursuant to Rule 425 under the Securities Act
    (17 CFR 230.425)

[_] Soliciting  material  pursuant to Rule 14a-12 under the Exchange Act
    (17 CFR 240.14a-12)

[_] Pre-commencement communications pursuant to Rule 14d-2(b) under the
    Exchangect (17 CFR 240.14d-2(b))

[X] Pre-commencement communications pursuant to Rule 13e-4(c) under the
    Exchange Act (17 CFR 240.13e-4(c))



SECTION 8 - OTHER EVENTS

ITEM 8.01 OTHER EVENTS.

On December 29,  2004,  Chesapeake  Energy  Corporation  issued a press  release
announcing  the final  results of its  previously  announced  offer to  exchange
shares of its common stock for each  outstanding  shares of its 6.0%  Cumulative
Convertible Preferred Stock commenced on November 30, 2004. The press release is
attached hereto as exhibit 99.1.


SECTION 9 - FINANCIAL STATEMENTS AND EXHIBITS

ITEM 9.01 FINAL STATEMENTS AND EXHIBITS.

         (c)      Exhibits

    EXHIBIT NO.             DOCUMENT DESCRIPTION
    -----------             --------------------

       99.1           Press Release of December 29, 2004


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                                    SIGNATURE


         Pursuant to the  requirements  of the Securities  Exchange Act of 1934,
the  registrant  has duly  caused  this report to be signed on its behalf by the
undersigned hereunto duly authorized.


                                          CHESAPEAKE ENERGY CORPORATION


                                  By:     /s/ AUBREY K. MCCLENDON
                                          -------------------------------------
                                              Aubrey K. McClendon
                                              Chairman of the Board and
                                              Chief Executive Officer

Date:         December 29, 2004



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                                  EXHIBIT INDEX


     EXHIBIT NO.             DOCUMENT DESCRIPTION
     -----------             --------------------

        99.1           Press Release of December 29, 2004


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