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)
- -------------------------------------------------------------------------------
                      NOVEMBER 30, 2004 (NOVEMBER 30, 2004)


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


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


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


                                 (405) 848-8000
- --------------------------------------------------------------------------------
              (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 Exchange
Act (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 November 30, 2004,  Chesapeake Energy Corporation issued a press release
announcing an exchangeoffer for its 6.0% Cumulative Convertible Preferred Stock.
This press release is attached hereto as exhibit 99.1.


ITEM 9.01 - EXHIBITS

(c)      Exhibits

EXHIBIT NO.             DOCUMENT DESCRIPTION

         99.1           Press Release dated November 30, 2004
                        announcing exhange offer for 6.0% Cumulative Convertible
                        Preferred Stock.






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

Dated:        November 30, 2004






                                  EXHIBIT INDEX


EXHIBIT NO.             DOCUMENT DESCRIPTION


    99.1           Press Release dated November 30, 2004 announcing
                   exchange offer for 6.0% Cumulative Convertible
                   Preferred Stock