Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Litespeed Management, L.L.C.
 2. Date of Event Requiring Statement (Month/Day/Year)
05/09/2012		 3. Issuer Name and Ticker or Trading Symbol
DYNEGY INC. [DYN]
(Last)
(First)
(Middle)
237 PARK AVENUE, SUITE 900		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director __X__ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

NEW YORK, NY 10017		 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 Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 20,089,994
D (1)
 
Common Stock 20,089,994
I
See Footnote (2)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Litespeed Management, L.L.C.
237 PARK AVENUE
SUITE 900
NEW YORK, NY 10017		     X    
ZIMMERMAN, JAMIE
C/O LITESPEED MANAGEMENT, L.L.C.
237 PARK AVENUE, SUITE 900
NEW YORK, NY 10017		     X    
LITESPEED MASTER FUND, LTD.
C/O OGIER FIDUCIARY SERVICES
89 NEXUS WAY, CAMANA BAY
GRAND CAYMAN, E9 KY1-9007		     X    

Signatures

Litespeed Management, L.L.C., By: /s/ Jamie Zimmerman, Managing Member 05/15/2012
**Signature of Reporting Person Date
By: /s/ Jamie Zimmerman, Managing Member 05/15/2012
**Signature of Reporting Person Date
Litespeed Master Fund, Ltd., By: /s/ Jamie Zimmerman, Director 05/15/2012
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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).
(1) The reported securities are directly owned by Litespeed Master Fund, Ltd., which is a reporting person. Litespeed Management, L.L.C. and Jamie Zimmerman may be deemed to indirectly beneficially own the securities directly held by Litespeed Master Fund, Ltd. See footnote 2.
(2) The reported securities may be deemed indirectly beneficially owned by Litespeed Management, L.L.C. as investment manager of Litespeed Master Fund, Ltd. The reported securities may also be deemed indirectly beneficially owned by Jamie Zimmerman as Managing Member of Litespeed Management, L.L.C. Litespeed Management, L.L.C. and Jamie Zimmerman disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that such Reporting Persons are the beneficial owners of the securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose.

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