Sec Form 4 Filing - BlueMountain GP Holdings, LLC @ DUNE ENERGY INC - 2015-06-01

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person BlueMountain GP Holdings, LLC 2. Issuer Name and Ticker or Trading Symbol DUNE ENERGY INC [ DUNR] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 280 PARK AVENUE, 12TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 06/01/2015 (Street) NEW YORK, NY10017 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock ( 1 ) ( 2 ) ( 3 ) 06/01/2015 S 2,846,056 D $ 0 9,166,258 I Footnotes ( 1 ) ( 2 ) Common Stock ( 1 ) ( 2 ) ( 3 ) 06/01/2015 S 2,846,056 D $ 0 0 D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other BlueMountain GP Holdings, LLC 280 PARK AVENUE, 12TH FLOOR NEW YORK, NY10017 X BlueMountain Long/Short Credit Master Fund L.P. 280 PARK AVENUE, 12TH FLOOR NEW YORK, NY10017 X BlueMountain Long/Short Credit GP, LLC 280 PARK AVENUE, 12TH FLOOR NEW YORK, NY10017 X Signatures BlueMountain GP Holdings, LLC, By: /s/ Paul Friedman, Chief Compliance Officer 06/03/2015 Signature of Reporting Person Date BlueMountain Long/Short Credit Master Fund L.P., By: BlueMountain Long/Short Credit GP, LLC, By: BlueMountain GP Holdings, LLC, By: /s/ Paul Friedman, Chief Compliance Officer 06/03/2015 Signature of Reporting Person Date BlueMountain Long/Short Credit GP, LLC, By: BlueMountain GP Holdings, LLC, By: /s/ Paul Friedman, Chief Compliance Officer 06/03/2015 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The filing of this Form 4 shall not be construed as an admission that either GP Holdings or BMLSC GP (each as defined below) is or was for the purposes of Section 16(a) of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise the beneficial owner of any shares of Common Stock, par value $0.001 per share (the "Common Stock"), of Dune Energy, Inc. (the "Issuer"). Pursuant to Rule 16a-1(a)(4) of the Exchange Act, each of GP Holdings and BMLSC GP disclaims such beneficial ownership, except to the extent of its respective pecuniary interest. BlueMountain Long/Short Credit GP, LLC ("BMLSC GP") is the general partner of BlueMountain Long/Short Credit Master Fund L.P. ("BMLSC") and has an indirect profits interest in the Common Stock beneficially owned by it. BlueMountain GP Holdings, LLC ("GP Holdings") is the sole owner of BMLSC GP and thus has an indirect profits interest in the Common Stock beneficially owned by BMLSC. ( 2 )On June 1, 2015, BMLSC sold 2,846,056 shares of Common Stock to BlueMountain Montenvers Master Fund SCA SICAV-SIF ("BMM"). BlueMountain Capital Management, LLC ("BMCM") is the investment manager of BMM and BMLSC, and in that capacity directs the voting and disposition of securities held by each of them and receives an asset-based fee with respect to their investment activities. As BMCM acts as investment manager for each of BMM and BMLSC, its pecuniary interest in the Common Stock did not change. Pursuant to Rule 16a-1(a)(4) of the Exchange Act, BMCM disclaims any beneficial ownership of the Common Stock, except to the extent of its pecuniary interest. ( 3 )The Reporting Persons are jointly filing this Form 4 pursuant to Rule 16(a)-3(j) under the Exchange Act.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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