SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                  SCHEDULE TO
    (RULE 14D-100) TENDER OFFER STATEMENT UNDER SECTION 14(D)(1) OR 13(E)(1)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                               (AMENDMENT NO. 5)

                                  DYNEGY INC.
                       (NAME OF SUBJECT COMPANY (ISSUER))

                               IEH MERGER SUB LLC
                        ICAHN ENTERPRISES HOLDINGS L.P.
                              IEP MERGER SUB INC.
                               ICAHN PARTNERS LP
                         ICAHN PARTNERS MASTER FUND LP
                        ICAHN PARTNERS MASTER FUND II LP
                       ICAHN PARTNERS MASTER FUND III LP
                         HIGH RIVER LIMITED PARTNERSHIP
                             HOPPER INVESTMENTS LLC
                                 BARBERRY CORP.
                                ICAHN ONSHORE LP
                               ICAHN OFFSHORE LP
                                ICAHN CAPITAL LP
                                   IPH GP LLC
                             ICAHN ENTERPRISES L.P.
                          ICAHN ENTERPRISES G.P. INC.
                                 BECKTON CORP.
                                 CARL C. ICAHN
                           (NAMES OF FILING PERSONS)*

                         COMMON STOCK, PAR VALUE $0.01
                         (TITLE OF CLASS OF SECURITIES)

                                   26817G300
                     (CUSIP NUMBER OF CLASS OF SECURITIES)

                            KEITH L. SCHAITKIN, ESQ.
                             DEPUTY GENERAL COUNSEL
                                ICAHN CAPITAL LP
                          767 FIFTH AVENUE, 47TH FLOOR
                            NEW YORK, NEW YORK 10153
                                 (212) 702-4380
  (NAME, ADDRESS AND TELEPHONE NUMBER OF PERSON AUTHORIZED TO RECEIVE NOTICES
                AND COMMUNICATIONS ON BEHALF OF FILING PERSONS)


                           CALCULATION OF FILING FEE

TRANSACTION VALUATION:                                     AMOUNT OF FILING FEE:
$665,350,532*                                              $47,440  **

*    Calculated  solely  for  purposes  of  determining  the  filing  fee.  The
     calculation  assumes the purchase of all 120,972,824 issued and outstanding
     shares  of common stock, par value $0.01 per share, Dynegy Inc. has advised
     IEH  Merger  Sub  LLC  were outstanding as of December 9, 2010 at the offer
     price  of  $5.50  per  share.

**   Calculated  in  accordance with Rule 0-11 of the Securities Exchange Act of
     1934,  as  amended,  determined  based  upon  multiplying 0.00007130 by the
     transaction  valuation  of  $665,350,532.

/x/  Check  the  box  if  any  part  of the fee is offset as provided by Rule
     0-11(a)(2)  and  identify  the  filing  with  which  the offsetting fee was
     previously  paid.  Identify  the  previous filing by registration statement
     number,  or  the  Form  or  Schedule  and  the  date  of  its  filing.


Amount previously paid: $47,440                  Filing Party: Icahn Enterprises
Form or registration no.:  Schedule TO                         Holdings L.P.
                                                 Date Filed:  December 22, 2010

/ /  Check the box if the filing relates solely to preliminary communications
     made  before  the  commencement  of  a  tender  offer.

Check  the  appropriate  boxes  below to designate any transactions to which the
statement  relates:


/x/  third party tender offer subject to Rule 14d-1
/ /  going-private transaction subject to Rule 13e-3
/ /  issuer tender offer subject to Rule 13e-4
/x/  amendment to Schedule 13D under Rule 13d-2

Check the following box if the filing is a final amendment reporting the results
of the tender offer:  / /



*       Introductory  Note: Pursuant to the Merger Agreement (as defined in, and
filed  with,  the  Schedule  TO  (as  defined  below)),  IEH  Merger Sub LLC was
obligated  to  commence  the  Offer  (as  defined  below)  by December 22, 2010.
Pursuant  to  the  Guarantee  (as  defined in, and filed with, the Schedule TO),
Icahn  Enterprises  Holdings  L.P.  agreed  to  absolutely,  irrevocably  and
unconditionally, guarantee to Dynegy Inc. the full and timely performance by IEH
Merger  Sub LLC of its payment and other obligations under the Merger Agreement,
including  its  obligation to commence and consummate the Offer. Both IEH Merger
Sub  LLC  and Icahn Enterprises Holdings L.P. are co-bidders for all purposes in
the  Offer.

     This  Amendment  No. 5 amends and supplements the Tender Offer Statement on
Schedule TO, dated December 22, 2010 (the "Original Schedule TO"), as amended by
the  Amendment  No.  1  to  the Schedule TO, dated December 28, 2010 (the "First
Amendment"), as further amended by the Amendment No. 2 to the Schedule TO, dated
January  6,  2011 (the "Second Amendment"), as amended by the Amendment No. 3 to
the Schedule TO, dated January 20, 2011(the "Third Amendment") and as amended by
the  Amendment  No.  4  to  the  Schedule TO, dated January 26, 2011(the "Fourth
Amendment"  and  together  with  the  First Amendment, the Second Amendment, the
Third Amendment and the Original Schedule TO, the "Schedule TO") relating to the
tender  offer  by  IEH Merger Sub LLC, a Delaware limited liability company (the
"IEH  Merger  Sub")  and  Icahn  Enterprises  Holdings  L.P., a Delaware limited
partnership  ("IEH",  and  together  with  IEH  Merger  Sub,  the "Offeror"), to
purchase  for  cash  all of the issued and outstanding shares of common stock of
Dynegy  Inc., including the associated rights issued pursuant to the Stockholder
Protection  Rights  Agreement,  dated as of November 22, 2010, and as amended on
December  15,  2010,  between  the  Company and Mellon Investor Services LLC, as
Rights  Agent,  that are issued and outstanding (such shares of common stock and
such  rights  collectively, the "Shares") at a price of $5.50 per Share, without
interest and less any required withholding taxes, if any. Pursuant to the Merger
Agreement, IEH Merger Sub agreed to commence a tender offer to purchase for cash
all  outstanding  Shares.  Pursuant  to the Guarantee, IEH agreed to absolutely,
irrevocably  and  unconditionally,  guarantee to Dynegy Inc. the full and timely
performance  by  IEH  Merger  Sub of its payment and other obligations under the
Merger Agreement, including its obligation to commence and consummate the Offer.
Both  IEH  Merger  Sub  and  IEH  are  co-bidders for all purposes in the Offer.

     The  Offer is subject to the terms and conditions set forth in the Offer to
Purchase,  dated  December  22,  2010  (the  "Offer  to Purchase"). The Offer to
Purchase,  the  related  Letter of Transmittal (the "Letter of Transmittal") and
Notice  of  Guaranteed Delivery, copies of which are attached hereto as Exhibits
(a)(1)(i),  (a)(1)(ii)  and  (a)(1)(iii),  respectively, constitute the "Offer".

     As  permitted  by General Instruction F to Schedule TO, the information set
forth  in the entire Offer to Purchase, the Letter of Transmittal and the Notice
of  Guaranteed  Delivery,  including  all  appendices,  schedules,  exhibits and
annexes  thereto,  is  hereby expressly incorporated by reference in response to
Items  1  through  11 of this Schedule TO and is supplemented by the information
specifically  provided  herein.

     As  permitted  by General Instruction G to Schedule TO, this Schedule TO is
also  an  amendment  to the joint statement on Schedule 13D filed on October 12,
2010  by  IEH,  Icahn Partners LP, a limited partnership governed by the laws of
Delaware,  Icahn  Partners Master Fund LP, a limited partnership governed by the
laws  of  the  Cayman  Islands,  Icahn  Partners  Master  Fund  II LP, a limited
partnership  governed  by  the laws of the Cayman Islands, Icahn Partners Master
Fund  III  LP, a limited partnership governed by the laws of the Cayman Islands,
High  River  Limited  Partnership, a limited partnership governed by the laws of
Delaware,  Hopper  Investments  LLC, a limited liability company governed by the
laws  of  Delaware,  Barberry  Corp.,  a  corporation  governed  by  the laws of
Delaware,  Icahn  Onshore  LP,  a  limited  partnership  governed by the laws of
Delaware,  Icahn  Offshore  LP,  a  limited  partnership governed by the laws of
Delaware,  Icahn  Capital  LP,  a  limited  partnership  governed by the laws of
Delaware,  IPH  GP  LLC,  a  limited  liability  company governed by the laws of
Delaware, Icahn Enterprises Holdings L.P., a limited partnership governed by the
laws  of  Delaware,  Icahn  Enterprises G.P. Inc., a corporation governed by the
laws of Delaware, Beckton Corp., a corporation governed by the laws of Delaware,
and  Carl  C.  Icahn  (collectively,  the  "Icahn  Entities").

ITEM 12.

Item 12 of the Schedule TO is hereby amended and supplemented as follows:

  (a)(5)(iv)    Article Written by Carl C. Icahn published in the New York Post,
                January  30,  2011.



                                   SIGNATURES

     After  due  inquiry  and  to the best of my knowledge and belief, I certify
that  the information set forth in this statement is true, complete and correct.


                                            ICAHN PARTNERS LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name: EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            ICAHN PARTNERS MASTER FUND LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            ICAHN PARTNERS MASTER FUND II LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            ICAHN PARTNERS MASTER FUND III LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            HIGH RIVER LIMITED PARTNERSHIP
                                            BY:  HOPPER INVESTMENTS LLC, ITS
                                                 GENERAL PARTNER
                                            BY:  BARBERRY CORP., ITS SOLE MEMBER

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            HOPPER INVESTMENTS LLC
                                            BY:  BARBERRY CORP., ITS SOLE MEMBER

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            BARBERRY CORP.

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY




                                            ICAHN ONSHORE LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            ICAHN OFFSHORE LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            ICAHN CAPITAL LP

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            BECKTON CORP.

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            IPH GP LLC

                                            By:  /s/ EDWARD MATTNER
                                                 ------------------
                                                 Name:  EDWARD MATTNER
                                                 Title: AUTHORIZED SIGNATORY


                                            ICAHN ENTERPRISES HOLDINGS L.P.
                                            BY:  ICAHN ENTERPRISES G.P. INC.,
                                                 ITS GENERAL PARTNER

                                            By:  /s/ DOMINICK RAGONE
                                                 -------------------
                                                 Name:  DOMINICK RAGONE
                                                 Title: CHIEF FINANCIAL OFFICER


                                            IEH MERGER SUB LLC
                                            BY: ICAHN ENTERPRISES HOLDINGS L.P.,
                                                ITS SOLE MEMBER
                                            BY:  ICAHN ENTERPRISES G.P. INC.,
                                                 ITS GENERAL PARTNER

                                            By:  /s/ DOMINICK RAGONE
                                                 -------------------
                                                 Name:  DOMINICK RAGONE
                                                 Title: CHIEF FINANCIAL OFFICER


                                            IEP MERGER SUB INC.

                                            By:  /s/ DOMINICK RAGONE
                                                 -------------------
                                                 Name:  DOMINICK RAGONE
                                                 Title: CHIEF FINANCIAL OFFICER


                                            /s/ CARL C. ICAHN
                                            -----------------
                                            Name:  CARL C. ICAHN


Date: February 2, 2011



                                 EXHIBIT INDEX


EXHIBIT NO.     DESCRIPTION

(a)(1)(i)       Offer to Purchase, dated December 22, 2010*

(a)(1)(ii)      Letter of Transmittal (including Guidelines for Certification of
                Taxpayer Identification Number)*

(a)(1)(iii)     Notice of Guaranteed Delivery*

(a)(1)(iv)      Letter to Brokers, Dealers, Commercial Banks, Trust Companies
                and Other Nominees*

(a)(1)(v)       Letter to Clients*

(a)(5)(i)       Summary Advertisement as published in the New York Times, by the
                Offeror, on December 22, 2010*

(a)(5)(ii)      Joint Press Release of the Offeror and Dynegy Inc., dated
                December 15, 2010 (incorporated by reference to Exhibit 1.1 to
                the Schedule TO-C filed by the Offeror with the Securities and
                Exchange Commission on December 15, 2010)*

(a)(5)(iii)     Press Release of Icahn Enterprises LP, dated January 26, 2011*

(a)(5)(iv)      Article Written by Carl C. Icahn published in the New York Post,
                January 30, 2011 (filed herewith)

(b)             None.

(c)             None.

(d)(1)          Agreement and Plan of Merger, dated as of December 15, 2010,
                among Dynegy Inc., IEH Merger Sub LLC and IEP Merger Sub Inc.
                (incorporated by reference to Exhibit 2.1 to the Form 8-K filed
                by Icahn Enterprises L.P. with the Securities and Exchange
                Commission on December 17, 2010)*

(d)(2)          Support Agreement, dated as of December 15, 2010, (incorporated
                by reference to Exhibit 1.2 to the Schedule TO-C filed by the
                Offeror with the Securities and Exchange Commission on
                December 15, 2010)*

(d)3            Guarantee, dated as of December 15, 2010*

(g)             None.

(h)             None.

__________________
*  Previously Filed




                                                              EXHIBIT (a)(5)(iv)

PUBLISHED IN THE NEW YORK POST, JANUARY 30, 2011

GETTING ACTIVE

By CARL ICAHN

Sunday's  article  in The New York Post basically concludes that while I purport
to  be  the  shareholder's  friend,  l  have  not  helped  them  at  all.

However, the facts plainly show that this is not even remotely true.

Let  us  examine  how,  over  the  last decade, shareholders have benefited as a
result  of  my  taking  sizeable  positions  and  pressing  for  performance
improvements.  During  this  period,  we  were  strong activists in well over 20
companies  with an equity capitalization of between $500 million and $20 billion
in  which  we  purchased  a  large  amount  of  stock.

If  investors  had purchased these stocks when we did and sold when we did, even
with  factoring  in  some  losing  investments,  they  would have realized a net
annualized  return of 23.44 percent -- compared to a return of 1 percent if they
made  the  same  investment  over  the  same  time  period in the S&P 500 Index.

Additionally,  the stock value of these companies increased by approximately $44
billion  over  the  same  period,  obviously  benefiting all shareholders. These
companies  included  such well-known names as Biogen, Genzyme, Blockbuster, CIT,
Korean  Tobacco,  Kerr-McGee,  ImClone  and  Amylin.

Furthermore, we also invested in a number of distressed bonds during this period
and were actively involved in restructuring the indebted companies. Although all
bondholders  greatly  benefited  from  our  activities,  these  results were not
factored  into  the  above  calculations  of  net  return.

The  article  in  Sunday's  Post  completely  omitted  the  great  benefits  to
shareholders  outlined  above.  Instead  it  focused  on  four  examples where I
allegedly  took  advantage  of  shareholders:

*  DYNEGY:  Recently  we  opposed  a  $4.50  per-share  bid  for  Dynegy made by
Blackstone.  Seneca  Capital,  a  New York hedge fund, asserted that the auction
process  awarding  Blackstone  the company was totally unfair and made it almost
impossible  for any other bids to materialize -- because Blackstone would have a
right  of  first  refusal.

Furthermore,  Blackstone  would receive a $50 million breakup fee if another bid
was  accepted.  I  told  shareholders that they should vote against Blackstone's
offer  and  that  a new and fair auction process should be initiated. In the new
process,  I  promised  to  make a "stalking horse bid" with a breakup fee of $35
million  less  than  Blackstone's  breakup  fee  with no right of first refusal.

In  addition,  I  offered to pay 22 percent more than Blackstone's original bid.
For  some  reason  that  I  cannot  fathom,  The  Post  is saying I somehow took
advantage  of  Dynegy  by  keeping  my  promise  and  making  a  higher  offer.

*  BLOCKBUSTER:  Even more ridiculous is a lawsuit that The Post quotes, stating
that  soon  after I left the board of Blockbuster, I purchased Blockbuster bonds
on  the  cheap,  knowing it would go into bankruptcy. With all due respect, I do
not  believe The Post should be quoting unfounded malicious allegations filed in
an  absurd  complaint.

I  left  the Blockbuster board in January and did not purchase Blockbuster bonds
until  August,  when  it  was  already  publicly known that Blockbuster might go
bankrupt,  since  they  had entered into "forbearance agreements" with creditors
(copies  of  which  were  filed  with  the  SEC) because they could not make the
required  interest  payments.

*  LIONSGATE: The specious allegations regarding supposed secret plans involving
MGM  and  Lionsgate  are  a  complete fabrication, invented to justify meritless
litigation  by  Lionsgate  to  throw  roadblocks  in  the way of our campaign to
improve  the  company's dismal performance. Accordingly, we have filed a motion,
still  pending,  to  dismiss  Lionsgate's  complaint.

*  XO  COMMUNICATIONS: The Post has repeated certain negative statements made by
Geoffrey Raynor, a shareholder of XO, a company which I control. He purchased XO
approximately seven years ago at $5 per share and obviously has a large loss. In
fact,  since  the  time  of  his  purchase,  I  have  had  to invest substantial
additional funds into XO in order to keep its business alive, during a period in
which  small  telecommunication  companies  have  fared  very  badly.

As  a  result, I now have just under $l billion of preferred stock. Raynor, like
other large holders, was offered opportunities to invest with me. He declined to
do  so, choosing instead to bring lawsuits against me rather than face up to the
fact  that  he  has  made  a  very  poor  investment.

In  recent  years,  Raynor  has also brought numerous lawsuits against others in
connection  with  other investments he has made. Raynor also argues that I could
have  sold  the company. This is entirely false. We hired investment bankers and
tried  for  two  years  to  sell  and  never  got  a  firm  cash  offer.

To  sum up, I believe it is a truism that "activism," if done properly, enhances
value  for  all  shareholders.

The  reason  activism is so profitable is not because of the genius of activists
but,  sadly,  because  many  companies in our country have managers that are not
held  accountable  and  are  often  doing  a  poor  job.

Additionally,  many  companies would be more efficient if they were consolidated
with other synergistic companies. However, too many managements and boards would
rather  entrench  themselves  than  take  these  actions.

Unfortunately,  if we do not do something soon about increasing the efficiencies
of  our corporations, our country will continue to lose its edge in competing in
the  global  economy  and  unemployment  will  continue  to  grow.