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Form SC 13G/A CHESAPEAKE ENERGY CORP Filed by: SOUTHEASTERN ASSET MANAGEMENT INC/TN/

February 13, 2015 4:02 PM EST
SECURITIES AND EXCHANGE COMMISSION
                       Washington, D.C.  20549

                             SCHEDULE 13G
              Under the Securities Exchange Act of 1934

                           (Amendment No. 2)*

                     Chesapeake Energy Corporation
         ________________________________________________________
                            (Name of Issuer)


                             Common Stock
         _______________________________________________________
                    (Title of Class and Securities)

                               165167107
         _______________________________________________________

                 (CUSIP Number of Class of Securities)

Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

/X/	Rule 13d-1(b)
/ /	Rule 13d-1(c)
/ /	Rule 13d-1(d)


* The remainder of this cover page shall be filled out for a

reporting person's initial filing on this form with respect to the

subject class of securities, and for any subsequent amendment

containing information which would alter the disclosures provided

in a prior page.



The information required in the remainder of this cover page shall

not be deemed to be "filed" for the purpose of Section 18 of the

Securities Exchange Act of 1934 ("Act") or otherwise subject to the

liabilities of that section of the Act but shall be subject to all

other provisions of the Act (however, see the Notes).





                  (Continued on following page(s))





CUSIP No. 165167107                                             13G
_____________________________________________________________________________
(1)  NAMES OF REPORTING PERSONS
     Southeastern Asset Management, Inc.      I.D. No. 62-0951781
_____________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                              (a)
                                              (b) X
_____________________________________________________________________________
(3)  SEC USE ONLY
_____________________________________________________________________________
(4)  CITIZENSHIP OR PLACE OF ORGANIZATION
     Tennessee
_____________________________________________________________________________
                                   :(5) SOLE VOTING POWER
                                   :   (Discretionary Accounts)
NUMBER OF SHARES BENEFICIALLY      :     41,113,870 shares
OWNED BY EACH REPORTING PERSON     __________________________________________
WITH                               :(6) SHARED OR NO VOTING POWER

                                         25,207,229 shares (shared)
                                          9,684,049 shares (No Vote)
                                   __________________________________________
                                   :(7) SOLE DISPOSITIVE POWER
                                        (Discretionary Accounts)
                                   :     50,797,919 shares
                                   __________________________________________
                                   :(8)  SHARED DISPOSITIVE POWER

                                   :     25,207,229 shares (Shared)
                                                  0 shares (None)
_____________________________________________________________________________
(9)  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
      (Discretionary & Non-discretionary Accounts)

       76,005,148 shares
_____________________________________________________________________________
(10)  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES
      CERTAIN SHARES 
_____________________________________________________________________________
(11)  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
      11.4 %
_____________________________________________________________________________
(12)  TYPE OF REPORTING PERSON
      IA
_____________________________________________________________________________




CUSIP No.  165167107                                     13G
_____________________________________________________________________________
(1)  NAMES OF REPORTING PERSONS
     O. Mason Hawkins                         I.D. No. XXX-XX-XXXX
_____________________________________________________________________________
(2)  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP:
                                              (a)
                                              (b) X
_____________________________________________________________________________
(3)  SEC USE ONLY
_____________________________________________________________________________
(4)  CITIZENSHIP OR PLACE OF ORGANIZATION
     Citizen of United States
_____________________________________________________________________________
                                   :(5) SOLE VOTING POWER
                                   :   (Discretionary Accounts)
NUMBER OF SHARES BENEFICIALLY      :    None
OWNED BY EACH REPORTING PERSON     __________________________________________
WITH                               :(6) SHARED VOTING POWER

                                   :    None
                                   __________________________________________
                                   :(7) SOLE DISPOSITIVE POWER

                                   :    None
                                   __________________________________________
                                   :(8) SHARED DISPOSITIVE POWER

                                   :    None
_____________________________________________________________________________
(9)  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

       None (See Item 3)
_____________________________________________________________________________
(10)  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW 9 EXCLUDES
      CERTAIN SHARES
_____________________________________________________________________________
(11)  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9
       0.0%
_____________________________________________________________________________
(12)  TYPE OF REPORTING PERSON
       IN
_____________________________________________________________________________



Item 1.

     (a). Name of Issuer: Chesapeake Energy Corporation "Issuer")

     (b). Address of Issuer's Principal Executive Offices:

          6100 North Western Avenue
          Oklahoma City, OK  73118


Item 2.

     (a). and (b). Names and Principal Business Addresses of Persons
          Filing

       (1)        Southeastern Asset Management, Inc.
                  6410 Poplar Ave., Suite 900
                  Memphis, TN 38119

       (2)        Mr. O. Mason Hawkins
                  Chairman of the Board and C.E.O.
                  Southeastern Asset Management, Inc.
                  6410 Poplar Ave., Suite 900
                  Memphis, TN 38119

     (c). Citizenship:

          Southeastern Asset Management, Inc. - A Tennessee corporation

          Mr. O. Mason Hawkins - U.S. Citizen

     (d). Title of Class of Securities: Common Stock (the "Securities").

     (e). Cusip Number:  165167107


Item 3.  If this statement is filed pursuant to Rules 13d-1 (b) or
         13d-2 (b), check whether the person filing is a:

(e.)  Investment Adviser registered under Section 203 of the 
      Investment Advisers Act of 1940.  This statement is being filed
      by Southeastern Asset Management, Inc. as a registered investment 
      adviser. All of the securities covered by this report are owned 
      legally by Southeastern's investment advisory clients and none 
      are owned directly or indirectly by Southeastern.  As permitted 
      by Rule 13d-4, the filing of this statement shall not be construed 
      as an admission that Southeastern Asset Management, Inc. is the 
      beneficial owner of any of the securities covered by this statement.

(g.)  Parent Holding Company.  This statement is also being filed by 
      Mr. O. Mason Hawkins, Chairman of the Board and C.E.O. of 
      Southeastern Asset Management, Inc. in the event he could be 
      deemed to be a controlling person of that firm as the result of 
      his official positions with or ownership of its voting securities. 
      The existence of such control is expressly disclaimed.  Mr. Hawkins 
      does not own directly or indirectly any securities covered by 
      this statement for his own account.  As permitted by Rule 13d-4, 
      the filing of this statement shall not be construed as an admission 
      that Mr. Hawkins is the beneficial owner of any of the securities 
      covered by this statement.


Item 4. Ownership:

  (a). Amount Beneficially Owned: (At 12/31/14)
       
       76,005,148 shares (this includes 2,137,081 shares underlying
       convertible preferred stocks) 

  (b). Percent of Class:
       
       11.4%

       Above percentage is based on 667,247,736 shares of Common
       Stock outstanding.

  (c). Number of shares as to which such person has:

     (i).   sole power to vote or to direct the vote:

            41,113,870 shares

     (ii).  shared or no power to vote or to direct the vote:

            Shared - 25,207,229 shares.
            
            Securities owned by the following series of Longleaf
            Partners Funds Trust, an open-end management
            investment company registered under the Investment
            Company Act of 1940, as follows:

            Longleaf Partners Fund - 24,740,029 shares
            Longleaf Partners Global Fund - 467,200                

            No Power to Vote - 9,684,049 shares.  


     (iii). sole power to dispose or to direct the disposition of:

            50,797,919 shares

     (iv).  shared or no power to dispose or to direct the disposition 
            of:

            Shared - 25,207,229 shares
            
            Securities owned by the following series of Longleaf
            Partners Funds Trust, an open-end management
            investment company registered under the Investment
            Company Act of 1940, as follows:

            Longleaf Partners Fund - 24,740,029 shares
            Longleaf Partners Global Fund - 467,200

            No Power - 0. 


Item 5. Ownership of Five Percent or Less of a Class:  N/A


Item 6. Ownership of More Than Five Percent on Behalf of Another Person:  
        N/A


Item 7. Identification and Classification of the Subsidiary Which
        Acquired the Security Being Reported on By the Parent
        Holding Company:  N/A


Item 8. Identification and Classification of Members of the Group:
        N/A


Item 9. Notice of Dissolution of Group:  N/A


Item 10. Certification:

By signing below I certify that, to the best of my knowledge and
belief, the securities referred to above were acquired in the
ordinary course of business and were not acquired for the purpose
and do not have the effect of changing or influencing the control
of the issuer of such securities and were not acquired in
connection with or as a participant in any transaction having such
purposes or effect.


                           Signatures

After reasonable inquiry and to the best of the knowledge and
belief of the undersigned, the undersigned certifies that the
information set forth in this statement is true, complete, and
correct.

Dated: February 13, 2015

                       
                              Southeastern Asset Management, Inc.

                              By  /s/ Andrew R. McCarroll
                              ______________________________________________
                              Andrew R. McCarroll 
                              Vice President and General Counsel

                              O. Mason Hawkins, Individually

                                /s/ O. Mason Hawkins
                              _______________________________________________




                      Joint Filing Agreement

In accordance with Rule 13d-1(k) under the Securities Exchange Act
of 1934, the persons or entities named below agree to the joint
filing on behalf of each of them of this Schedule 13G with respect
to the Securities of the Issuer and further agree that this joint
filing agreement be included as an exhibit to this Schedule 13G. In
evidence thereof, the undersigned hereby execute this Agreement as
of February 13, 2015.
 
                   
                              Southeastern Asset Management, Inc.

                              By  /s/ Andrew R. McCarroll
                              ______________________________________________
                              Andrew R. McCarroll 
                              Vice President and General Counsel

                              O. Mason Hawkins, Individually

                                /s/ O. Mason Hawkins
                             _______________________________________________
                              


1
CHK13G-2.doc	
SCHEDULE 13G - Chesapeake Energy Corporation ("Issuer")
Amendment #2
2
CHK13G-2.doc



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