SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934 (Amendment No. 4)* Dynegy Inc. (Name of Issuer) Common Stock, Par Value $0.01 (Title of Class of Securities) 26817G300 (CUSIP Number) Keith L. Schaitkin Icahn Capital LP 767 Fifth Avenue, 47th Floor New York, New York 10153 (212) 702-4300 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) November 15, 2010 (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of Section 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box / /. NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 13d-7 for other parties to whom copies are to be sent. *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 disclosures provided in a prior cover page. The information required on 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). SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON High River Limited Partnership 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 2,399,999 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 2,399,999 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,508,441 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.90% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Hopper Investments LLC 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 2,399,999 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 2,399,999 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,508,441 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.90% 14 TYPE OF REPORTING PERSON OO SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Barberry Corp. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 2,399,999 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 2,399,999 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 3,508,441 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 2.90% 14 TYPE OF REPORTING PERSON CO SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Partners Master Fund LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 4,145,343 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 4,145,343 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 6,065,433 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 5.02% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Partners Master Fund II LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 1,215,577 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 1,215,577 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,755,671 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 1.45% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Partners Master Fund III LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 585,406 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 585,406 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 854,675 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 0.71% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Offshore LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 5,946,326 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 5,946,326 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 8,675,779 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 7.18% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Partners LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 3,653,675 8 SHARED VOTING POWER 0 9 SOLE DISPOSITIVE POWER 3,653,675 10 SHARED DISPOSITIVE POWER 0 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,357,992 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.43% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Onshore LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 3,653,675 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 3,653,675 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 5,357,992 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 4.43% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Capital LP 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 9,600,001 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 9,600,001 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,033,771 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.61% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON IPH GP LLC 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 9,600,001 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 9,600,001 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,033,771 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.61% 14 TYPE OF REPORTING PERSON OO SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Enterprises Holdings L.P. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 9,600,001 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 9,600,001 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,033,771 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.61% 14 TYPE OF REPORTING PERSON PN SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Icahn Enterprises G.P. Inc. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 9,600,001 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 9,600,001 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,033,771 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.61% 14 TYPE OF REPORTING PERSON CO SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Beckton Corp. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS WC 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 9,600,001 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 9,600,001 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 14,033,771 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 11.61% 14 TYPE OF REPORTING PERSON CO SCHEDULE 13D CUSIP No. 26817G300 1 NAME OF REPORTING PERSON Carl C. Icahn 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / / (b) / / 3 SEC USE ONLY 4 SOURCE OF FUNDS 5 CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) / / 6 CITIZENSHIP OR PLACE OF ORGANIZATION United States of America NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH: 7 SOLE VOTING POWER 0 8 SHARED VOTING POWER 12,000,000 9 SOLE DISPOSITIVE POWER 0 10 SHARED DISPOSITIVE POWER 12,000,000 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 17,542,212 (includes Shares underlying call options. See Item 5) 12 CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES / / 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 14.51% 14 TYPE OF REPORTING PERSON IN SCHEDULE 13D Item 1. Security and Issuer The Schedule 13D filed with the Securities and Exchange Commission on October 8, 2010 by the Reporting Persons (the "Schedule 13D") with respect to the shares of Common Stock, par value $0.01 (the "Shares"), issued by Dynegy Inc. (the "Issuer") and as amended by Amendment Number One, Amendment Number Two and Amendment Number Three, is hereby further amended to furnish the additional information set forth herein. All capitalized terms contained herein but not otherwise defined shall have the meanings ascribed to such terms in the Schedule 13D. Item 3. Source and Amount of Funds or Other Consideration Item 3 of the Schedule 13D is hereby amended by replacing it in its entirety with the following: The Reporting Persons hold, in the aggregate, 17,542,212 Shares (including 5,542,212 Shares underlying call options. See Item 5). The aggregate purchase price of the Shares (including the purchase price of call options) purchased by the Reporting Persons collectively was $66.9 million (including commissions and premiums for the options to purchase Shares). The source of funding for the purchase was the general working capital of the respective purchasers. The Shares are held by the Reporting Persons in margin accounts together with other securities. Such margin accounts may from time to time have debit balances. Part of the purchase price of the Shares purchased by the Reporting Persons was obtained through margin borrowing. Item 5. Interest in Securities of the Issuer Item 5 of the Schedule 13D is hereby amended by replacing it in its entirety with the following: (a) The Reporting Persons may be deemed to beneficially own, in the aggregate, 17,542,212 Shares (including the 5,542,212 Shares underlying call options), representing approximately 14.51% of the Issuer's outstanding Shares (based upon the 120,894,257 Shares stated to be outstanding as of November 1, 2010 by the Issuer in the Issuer's Form 10-Q filed with the Securities and Exchange Commission on November 8, 2010). (b) High River has sole voting power and sole dispositive power with regard to 2,399,999 Shares. Each of Hopper, Barberry and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master has sole voting power and sole dispositive power with regard to 4,145,343 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master II has sole voting power and sole dispositive power with regard to 1,215,577 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Master III has sole voting power and sole dispositive power with regard to 585,406 Shares. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Icahn Partners has sole voting power and sole dispositive power with regard to 3,653,675 Shares. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn has shared voting power and shared dispositive power with regard to such Shares. Each of Hopper, Barberry and Mr. Icahn, by virtue of their relationships to High River (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which High River directly beneficially owns. Each of Hopper, Barberry and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn, by virtue of their relationships to each of Icahn Master, Icahn Master II and Icahn Master III (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which each of Icahn Master, Icahn Master II and Icahn Master III directly beneficially owns. Each of Icahn Offshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn, by virtue of their relationships to Icahn Partners (as disclosed in Item 2), may be deemed to indirectly beneficially own (as that term is defined in Rule 13d-3 under the Act) the Shares which Icahn Partners directly beneficially owns. Each of Icahn Onshore, Icahn Capital, IPH, Icahn Enterprises Holdings, Icahn Enterprises GP, Beckton and Mr. Icahn disclaims beneficial ownership of such Shares for all other purposes. (c) The following table sets forth all transactions with respect to Shares effected during the past sixty (60) days by any of the Reporting Persons, inclusive of any transactions effected through 5:00 p.m., New York City time, on November 15, 2010. Except as otherwise noted below, all such transactions were purchases of Shares effected in the open market, and the table includes commissions paid in per share prices. Name of Date No. of Shares/ Purchase Price Reporting of Options per Share (US$)/ Person Transaction Purchased Exercise Price -------------- -------------- -------------- ---------------------- High River 09/27/2010 1,001,440 4.73 High River 09/28/2010 300,000 4.79 High River 09/28/2010 733,397 4.85 High River 09/29/2010 222,802 4.86 High River 09/30/2010 142,360 4.87 High River 11/10/2010 420,700 (1) 2.90 (2) High River 11/11/2010 297,742 (1) 2.90 (2) High River 11/15/2010 390,000 (1) 2.90 (2) Icahn Partners 09/27/2010 1,524,556 4.73 Icahn Partners 09/28/2010 456,709 4.79 Icahn Partners 09/28/2010 1,116,498 4.85 Icahn Partners 09/29/2010 339,187 4.86 Icahn Partners 09/30/2010 216,725 4.87 Icahn Partners 11/10/2010 654,017 (1) 2.90 (2) Icahn Partners 11/11/2010 454,703 (1) 2.90 (2) Icahn Partners 11/15/2010 595,597 (1) 2.90 (2) Icahn Master 09/27/2010 1,729,713 4.73 Icahn Master 09/28/2010 518,169 4.79 Icahn Master 09/28/2010 1,266,744 4.85 Icahn Master 09/29/2010 384,829 4.86 Icahn Master 09/30/2010 245,888 4.87 Icahn Master 11/10/2010 731,113 (1) 2.90 (2) Icahn Master 11/11/2010 514,741 (1) 2.90 (2) Icahn Master 11/15/2010 674,236 (1) 2.90 (2) Icahn Master II 09/27/2010 507,220 4.73 Icahn Master II 09/28/2010 151,948 4.79 Icahn Master II 09/28/2010 371,459 4.85 Icahn Master II 09/29/2010 112,846 4.86 Icahn Master II 09/30/2010 72,104 4.87 Icahn Master II 11/10/2010 195,939 (1) 2.90 (2) Icahn Master II 11/11/2010 148,994 (1) 2.90 (2) Icahn Master II 11/15/2010 195,161 (1) 2.90 (2) Icahn Master III 09/27/2010 244,271 4.73 Icahn Master III 09/28/2010 73,174 4.79 Icahn Master III 09/28/2010 178,889 4.85 Icahn Master III 09/29/2010 54,348 4.86 Icahn Master III 09/30/2010 34,724 4.87 Icahn Master III 11/10/2010 101,731 (1) 2.90 (2) Icahn Master III 11/11/2010 72,532 (1) 2.90 (2) Icahn Master III 11/15/2010 95,006 (1) 2.90 (2) _________________________ (1) Shares underlying American-style call options purchased by the applicable Reporting Person, which expire on November 10, 2012. (2) Per share exercise price of call options purchased by the Reporting Persons. Exercise price will be adjusted to account for any dividends or other distributions declared by the Issuer prior to exercise of the options. The premium for such call options was approximately 35% of the market price. Item 6. Contracts, Arrangements, Understandings or Relationship with Respect to Securities of the Issuer Item 6 of the Schedule 13D is hereby amended by replacing it in its entirety with the following: Call Options ------------ The Reporting Persons have purchased American-style call options referencing an aggregate of 5,542,212 Shares, which expire on November 10, 2012. The agreements provide for physical settlement (unless the Reporting Person opts for a cash settlement). These agreements do not give the Reporting Persons direct or indirect voting, investment or dispositive control over the Shares to which these agreements relate. These agreements are further described in Item 5(c). Put Options ----------- The Reporting Persons have sold European-style put options referencing an aggregate of 5,542,212 Shares, which expire on November 10, 2012. The agreements provide that they settle in cash. These agreements do not give the Reporting Persons direct or indirect voting, investment or dispositive control over the Shares to which these agreements relate. Except as otherwise described herein, there are no contracts, arrangements, understandings or relationships (legal or otherwise) among the persons named in Item 2 and between such persons and any person with respect to any securities of the Issuer, including but not limited to transfer or voting of any of the securities, finder's fees, joint ventures, loan or option arrangements, puts or calls, guarantees of profits, division of profits or loss, or the giving or withholding of proxies. SIGNATURE After reasonable inquiry and to the best of each of the undersigned knowledge and belief, each of the undersigned certifies that the information set forth in this statement is true, complete and correct. Dated: November 15, 2010 ICAHN PARTNERS MASTER FUND LP ICAHN PARTNERS MASTER FUND II LP ICAHN PARTNERS MASTER FUND III LP ICAHN OFFSHORE LP ICAHN PARTNERS LP ICAHN ONSHORE LP BECKTON CORP. HOPPER INVESTMENTS LLC BARBERRY CORP. HIGH RIVER LIMITED PARTNERSHIP By: Hopper Investments LLC, general partner By: /s/ Edward E. Mattner ------------------------ Name: Edward E. Mattner Title: Authorized Signatory ICAHN CAPITAL LP By: IPH GP LLC, its general partner By: Icahn Enterprises Holdings L.P., its sole member By: Icahn Enterprises G.P. Inc., its general partner IPH GP LLC By: Icahn Enterprises Holdings L.P., its sole member By: Icahn Enterprises G.P. Inc., its general partner ICAHN ENTERPRISES HOLDINGS L.P. By: Icahn Enterprises G.P. Inc., its general partner ICAHN ENTERPRISES G.P. INC. By: /s/ Daniel Ninivaggi --------------------- Name: Daniel Ninivaggi Title: President /s/ Carl C. Icahn -------------------- CARL C. ICAHN [Signature Page of Schedule 13D Amendment No. 4 - Dynegy Inc.]