NATIONAL ENERGY GROUP INC
SC 13D/A, 2000-12-13
CRUDE PETROLEUM & NATURAL GAS
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. 7)

                           National Energy Group, Inc.
                                (Name of Issuer)

                                  Common Stock
                         (Title of Class of Securities)

                                   635812 209
                                 (CUSIP Number)

                               Marc Weitzen, Esq.
                                 General Counsel
                  Icahn Associates Corp. & affiliated companies
                          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 3, 2000
             (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  which is the subject of this  Schedule 13D, and is filing this
schedule because of Rule 13d-1(b)(3) or (4), check the following box / /.

NOTE:  Six copies of this statement, including all exhibits, should be filed
with the Commission.  See Rule 13d-1(a) 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).

                                       1
<PAGE>

                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Arnos Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       (a) /X/
                                                                       (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
                  Nevada

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
             4,656,889

8        SHARED VOTING POWER
                     0

9        SOLE DISPOSITIVE POWER
             4,656,889

10       SHARED DISPOSITIVE POWER
                     0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             4,656,889

                                       2


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*

                                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                      41.61%

14       TYPE OF REPORTING PERSON*
                          CO

                                       3


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Unicorn Associates Corporation

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
                  New York

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                     0

8        SHARED VOTING POWER
             4,656,889

9        SOLE DISPOSITIVE POWER
                     0

10       SHARED DISPOSITIVE POWER
            4,656,889

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            4,656,889

                                       4


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                         / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                           41.61%

14       TYPE OF REPORTING PERSON*
                              CO

                                       5


<PAGE>


                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                           ACF Industries Incorporated

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
                  New Jersey

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                      0

8        SHARED VOTING POWER
               4,656,889

9        SOLE DISPOSITIVE POWER
                       0

10       SHARED DISPOSITIVE POWER
               4,656,889

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
               4,656,889

                                       6


<PAGE>



12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  41.61%

14       TYPE OF REPORTING PERSON*
                      CO

                                       7


<PAGE>



                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  ACF Industries Holding Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
             4,656,889

9        SOLE DISPOSITIVE POWER
                     0

10       SHARED DISPOSITIVE POWER
             4,656,889

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            4,656,889

                                       8


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                   41.61%

14       TYPE OF REPORTING PERSON*
                       CO

                                       9





<PAGE>

                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                            Highcrest Investors Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
             4,656,889

9        SOLE DISPOSITIVE POWER
                     0

10       SHARED DISPOSITIVE POWER
             4,656,889

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
            4,656,889

                                       10


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                         41.61%

14       TYPE OF REPORTING PERSON*
                          CO

                                       11



<PAGE>

                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                             Buffalo Investors Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
                  New York

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                     0

8        SHARED VOTING POWER
             4,656,889

9        SOLE DISPOSITIVE POWER
                     0

10       SHARED DISPOSITIVE POWER
             4,656,889

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
             4,656,889

                                       12

<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  41.61%

14       TYPE OF REPORTING PERSON*
                     CO

                                       13


<PAGE>



                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Starfire Holding Corporation

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
              4,656,889

9        SOLE DISPOSITIVE POWER
                      0

10       SHARED DISPOSITIVE POWER
              4,656,889

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              4,656,889

                                       14


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                            / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                     41.61%

14       TYPE OF REPORTING PERSON*
                         CO

                                       15



<PAGE>

                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  High River Limited Partnership

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (b) / /

3        SEC USE ONLY

4        SOURCE OF FUNDS*
                  OO

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
                927,155

8        SHARED VOTING POWER
                      0

9        SOLE DISPOSITIVE POWER
                927,155

10       SHARED DISPOSITIVE POWER
                      0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                 927,155

                                       16


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                         8.29%

14       TYPE OF REPORTING PERSON*
                            PN

                                       17


<PAGE>



                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Barberry Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) /X/
                                                                         (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
                927,155

9        SOLE DISPOSITIVE POWER
                      0

10       SHARED DISPOSITIVE POWER
                927,155

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                927,155

                                       18


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                           / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                                 8.29%

14       TYPE OF REPORTING PERSON*
                                    PN

                                       19


<PAGE>



                                  SCHEDULE 13D

CUSIP No. 635812 209

1        NAME OF REPORTING PERSON
                  Riverdale LLC

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) /X/
                                                                         (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
                  0

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  0

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
         / /
                                       20


<PAGE>


13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                            0%

14       TYPE OF REPORTING PERSON*
                            CO

                                       21


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Gascon Partners

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) /X/
                                                                         (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
                  New York

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                  0

8        SHARED VOTING POWER
                  0

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  0
                                       22



<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
         / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0%

14       TYPE OF REPORTING PERSON*
                  PN
                                       23


<PAGE>




                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Cigas Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                       (a) /X/
                                                                       (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
                  0

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  0

                                       24


<PAGE>



12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                          / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0%

14       TYPE OF REPORTING PERSON*
                  CO

                                       25




<PAGE>

                                  SCHEDULE 13D

CUSIP No. 635812 209


1        NAME OF REPORTING PERSON
                  Astral Gas Corp.

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                        (a) /X/
                                                                        (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
                  New York

NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH:

7        SOLE VOTING POWER
                  0

8        SHARED VOTING POWER
                  0

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  0

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  0

                                       26


<PAGE>


12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
                                                                         / /

13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  0%

14       TYPE OF REPORTING PERSON*
                  CO

                                       27





<PAGE>

                                  SCHEDULE 13D

CUSIP No. 635812 209

1        NAME OF REPORTING PERSON
                  Carl C. Icahn

         S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON


2        CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*
                                                                         (a) /X/
                                                                         (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
                  5,584,044

9        SOLE DISPOSITIVE POWER
                  0

10       SHARED DISPOSITIVE POWER
                  5,584,044

11       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
                  5,584,044

12       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES*
         / /

                                       28


<PAGE>



13       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)
                  49.9%

14       TYPE OF REPORTING PERSON*
                  IN

                                       29


<PAGE>


                                  SCHEDULE 13D

Item 1.  SECURITY AND ISSUER

         This  Schedule  13D  filed  with  the  U.S.   Securities  and  Exchange
Commission  ("SEC") on July 27,  1995,  by High  River  Limited  Partnership,  a
Delaware limited  partnership ("High River"),  Riverdale LLC, a New York limited
liability company ("Riverdale"), Gascon Partners, a New York general partnership
("Gascon Partners"),  Cigas Corp., a Delaware  corporation  ("Cigas") Astral Gas
Corp., a New York corporation ("Astral"),  ACF Industries,  Incorporated,  a New
Jersey corporation ("ACF"), ACF Industries Holding Corp., a Delaware corporation
("ACF   Holding"),   Highcrest   Investors   Corp.,   a   Delaware   corporation
("Highcrest"),  Buffalo Investors Corp., a New York corporation  ("Buffalo") and
Starfire Holding Corporation, a Delaware corporation ("Starfire") (collectively,
the "Registrants")  amended on July 22, 1996, August 9, 1996, September 4, 1996,
June 17,  1997,  December  11, 1997 and  December 4, 1998 is 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 original Schedule 13D previously filed by the Registrants.

Item 2.  IDENTITY AND BACKGROUND

Item 2 is hereby amended by adding the following:

         The persons filing this statement are Arnos Corp., a Nevada corporation
("Arnos"),  Unicorn Associates  Corporation,  a New York corporation ("Unicorn")
and Barberry  Corp.,  a Delaware  corporation  ("Barberry",  and  together  with
Riverdale, Arnos, Unicorn, ACF, ACF Holding, Highcrest,  Buffalo, Starfire, High
River,  Gascon,  Cigas,  Astral  and  Carl C.  Icahn,  the  "Registrants").  The
principal  business address of each of Arnos and Unicorn is 1 Wall Street Court,
Suite 980, New York, New York 10005. The principal  business address of Barberry
is c/o Starfire Holding Corporation, 100 South Bedford Road, Mt. Kisco, New York
10549.

         As of October 23,  2000,  Barberry  replaced  Riverdale  as the general
partner  of  High  River.  Mr.  Icahn  is  the  sole  stockholder  of  Barberry.
Registrants  may be deemed to be a "group"  within  the  meaning  of Rule  13d-5
promulgated under the Securities Exchange Act of 1934, as amended (the "Act").

         Arnos and Unicorn are primarily engaged in the business of investing in
securities.  Arnos  is  a  wholly-owned  subsidiary  of  Unicorn.  Unicorn  is a
wholly-owned subsidiary of ACF. Barberry is primarily engaged in the business of
investing in securities and, effective as of October 23, 2000, acting as general
partner of High River.  Carl C. Icahn is the sole  stockholder and sole director
of each of Starfire and Barberry.  As such, Mr. Icahn is in a position  directly
and  indirectly  to  determine  the  investment  and  voting  decisions  made by
Registrants.

         Neither Arnos, Unicorn,  Barberry,  Mr. Icahn nor any executive officer
or director of any of the  Registrants  has, during the past five years (a) been
convicted in a criminal  proceeding  (excluding  traffic  violations  or similar
misdemeanors)  or (b)  been a  party  to a civil  proceeding  of a  judicial  or
administrative body of competent jurisdiction and as a result of such proceeding
was

                                       30


<PAGE>


or is subject to a judgment,  decree or final order enjoining future  violations
of,  or  prohibiting  or  mandating  activities  subject  to,  federal  or state
securities laws or a finding of any violation with respect to such laws.

         The name,  citizenship,  present principal occupation or employment and
business  address  of each  director  and  executive  officer  of each of Arnos,
Unicorn, ACF, ACF Holding, Highcrest,  Buffalo, Starfire,  Riverdale,  Barberry,
Gascon, Cigas and Astral is set forth on Schedule A attached hereto.

Item 3.  SOURCE AND AMOUNT OF FUNDS OR OTHER CONSIDERATION

Item 3 is hereby amended by adding the following:

         The aggregate  purchase price of the 4,656,889  shares of common stock,
par value  $.01 per  share,  of the  reorganized  Issuer  ("NEG  Common  Stock")
purchased by Arnos was  $2,000,000.  The source of funding for such purchase was
the general working capital of Arnos.

Item 4.  PURPOSE OF TRANSACTION

Item 4 is hereby amended to add the following:

         As of August 4, 2000 (the "Effective  Date") and in compliance with the
terms of the Issuer's  Joint Plan of  Reorganization  as confirmed by the United
States Bankruptcy Court for the Northern District of Texas (the "Plan"),  Dallas
Division, 3,569,300 shares of common stock of the Issuer held by High River were
converted  into an aggregate of 509,900 shares of NEG Common Stock pursuant to a
7-to-1 reverse stock split and 100,000 shares of Series D Convertible  Preferred
Stock,  par  value  $1.00 per  share,  of the  Issuer  held by High  River  were
converted into an aggregate of 417,255  shares of NEG Common Stock.  On November
3, 2000, in accordance with the Plan,  Arnos purchased  4,656,889  shares of NEG
Common Stock for $2,000,000 from the reorganized Issuer.

         Pursuant to the Plan, the Issuer will contribute  substantially  all of
its operating assets to a newly formed limited liability company ("Holding LLC")
in exchange for an equity interest in Holding LLC and Arnos will  simultaneously
contribute cash or assets to Holding LLC with a net value  equivalent to the net
value of the assets  contributed to Holding LLC by the Issuer in exchange for an
equity interest in Holding LLC.

         On the Effective  Date,  300,000  warrants held by Gascon Partners were
cancelled. By virtue of the cancellation of the warrants, Gascon Partners, Cigas
and Astral are no longer deemed  beneficial  owners of voting  securities of the
Issuer.

Item 5.  INTEREST IN SECURITIES OF ISSUER

Item 5 is hereby amended in its entirety to read as follows:

                                       31


<PAGE>


         (a) As of the close of business on November 3, 2000, Registrants may be
deemed to  beneficially  own in the  aggregate  5,584,044  shares of NEG  Common
Stock, representing approximately 49.9% of the Issuer's common stock (based upon
the  11,190,650  shares stated to be  outstanding  in the Issuer's Press Release
dated November 3, 2000). Registrants have direct beneficial ownership of the NEG
Common Stock as follows:

                                                       Approximate Percentage
                                                       of Outstanding Shares
                            Number of Shares           (computed in accordance
Name                        NEG Common Stock           with rule 13d-3(d)(1))
----                        ----------------           ----------------------

Arnos                          4,656,889                       41.61%

High River                       927,155                        8.29%

         Unicorn, ACF, ACF Holding, Highcrest,  Buffalo, Starfire and Mr. Icahn,
by  virtue of their  relationships  to Arnos (as  disclosed  in Item 2),  may be
deemed to beneficially own (as that term is defined in Rule 13d-3 under the Act)
the shares of NEG Common Stock that Arnos directly  beneficially  owns.  Each of
Unicorn, ACF, ACF Holding, Highcrest,  Buffalo, Starfire and Mr. Icahn disclaims
beneficial ownership of such shares for all other purposes.

         Barberry and Mr. Icahn, by virtue of their  relationships to High River
(as  disclosed  in Item 2), may be deemed to  beneficially  own (as that term is
defined  in Rule 13d-3  under the Act) the shares of NEG Common  Stock that High
River  directly  beneficially  owns.  Each of Barberry and Mr.  Icahn  disclaims
beneficial ownership of such shares for all other purposes.

         To the best of  Registrants'  knowledge,  except as set  forth  herein,
neither the directors nor the executive officers of the Registrants beneficially
own any NEG Common Stock.

         (b)  Each of  Arnos  and High  River  has the sole  power to vote or to
direct the vote and to dispose of or direct the disposition of the shares of NEG
Common Stock it directly beneficially owns.

         Each of Unicorn, ACF, ACF Holding, Highcrest, Buffalo, Starfire and Mr.
Icahn may be deemed to share  with Arnos the power to vote or to direct the vote
and to dispose or to direct the  disposition  of shares of NEG Common Stock that
Arnos directly beneficially owns.

         Each of Barberry  and Mr.  Icahn may be deemed to share with High River
the  power to vote or to  direct  the  vote  and to  dispose  or to  direct  the
disposition of shares of NEG Common Stock that High River directly  beneficially
owns.

         (c) The following  describes all transactions with respect to shares of
NEG Common  Stock  effected  during  the past sixty days by each of the  persons
named in Item 5(a) above:  On November 3, 2000,  Arnos  consummated the purchase
from the Issuer of 4,656,988  shares of NEG Common Stock at a price per share of
approximately $.42 pursuant to the terms of the Plan.

                                       32


<PAGE>


         (d) No other person has the right to receive or the power to direct the
receipt of dividends  from,  or the proceeds  from the sale of any shares of NEG
Common Stock that Registrants may be deemed to beneficially own.

         (e)  Not applicable.

Item 7.  MATERIALS TO BE FILED AS EXHIBITS TO THIS SCHEDULE 13D:

         Exhibit 1         Joint Filing Agreement

                                   Schedule A

         The  following  sets forth the name and  principal  occupation  of each
executive officer and director of Arnos, Unicorn,  ACF, ACF Holding,  Highcrest,
Buffalo,  Starfire,  Riverdale,  Gascon,  Cigas, Astral and Barberry.  Each such
person  is a  citizen  of the  United  States of  America.  Except as  otherwise
indicated,  the  business  address  of each  director  and  officer is c/o Icahn
Associates Corp., 767 Fifth Avenue, 47th Floor, New York, New York 10053.

               Name, Business Address and Principal Occupation of
                  Each Executive Officer And Director of Arnos

NAME                                   POSITION

Carl C. Icahn                          President and Director

Edward E. Mattner                      Vice President

Geordie Hebard                         Vice President

Gail Golden                            Vice President, Secretary and Treasurer


               Name, Business Address and Principal Occupation of
                 Each Executive Officer And Director of Unicorn

NAME                                   POSITION

Carl C. Icahn                          Director

Edward E. Mattner                      President and Treasurer

Gail Golden                            Vice President and Secretary

                                       33


<PAGE>




               Name, Business Address and Principal Occupation of
                  Each Executive Officer And Director of ACF(1)

NAME                                   POSITION

Carl C. Icahn                          Chairman

Alfred D. Kingsley(2)                  Vice Chairman

James J. Unger                         Vice Chairman

Roger D. Wynkoop                       President

Robert J. Mitchell                     Senior Vice President - Finance and
                                       Secretary


               Name, Business Address and Principal Occupation of
               Each Executive Officer And Director of ACF Holding

Carl C. Icahn                          Chairman and Director

Richard T. Buonato(3)                  Vice President, Secretary and Director

Robert J. Mitchell                     President and Treasurer


               Name, Business Address and Principal Occupation of
                Each Executive Officer And Director of Highcrest

Carl C. Icahn                          President and Chairman

Richard T. Buonato                     Senior Vice President, Treasurer and
                                       Director

Edward E. Mattner                      Director

Gail Golden                            Vice President and Secretary

Robert J. Mitchell                     Assistant Secretary

------------------
(1) Unless otherwise noted, the business address of each officer of ACF is c/o
    ACF Industries, Incorporated, 620 North Second Street, St. Charles, Missouri
    63301.
(2) Business address is c/o Greenway Partners, 277 Park Avenue, 27th Floor, New
    York, New York 10172.
(3) Business address is c/o Icahn & Co., 1 Wall Street Court, Suite 980, New
    York, New York 10005

                                       34


<PAGE>


               Name, Business Address and Principal Occupation of
                 Each Executive Officer And Director of Buffalo

Richard T. Buonato                     Vice President, Secretary, Comptroller
                                       and Director

Edward E. Mattner                      President and Treasurer

Gail Golden                            Assistant Secretary

               Name, Business Address and Principal Occupation of
                 Each Executive Officer And Director of Starfire

Carl C. Icahn                          President and Director

Robert J. Mitchell                     Secretary and Treasurer

               Name, Business Address and Principal Occupation of
                          Managing Member of Riverdale

Carl C. Icahn                          Managing Member

               Name, Business Address and Principal Occupation of
                            General Partner of Gascon

Cigas Corp.(4)                         General Partner

               Name, Business Address and Principal Occupation of
             Each Executive Officer And Director of Cigas and Astral

Carl C. Icahn                          Director

Edward E. Mattner                      President

Richard T. Buonato                     Assistant Secretary

Gail Golden                            Vice President and Secretary

               Name, Business Address and Principal Occupation of
                 Each Executive Officer And Director of Barberry

Carl C. Icahn                          President, Secretary and Chairman

---------
(4) Business address is c/o Starfire Holding Corporation, 100 South Bedford
    Road, Mt. Kisco, New York 10549


                                       35


<PAGE>



                                   SIGNATURES

         After reasonable  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.

Dated: December 12, 2000

                                       ARNOS CORP.

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:   President

                                       UNICORN ASSOCIATES CORPORATION

                                       By:      /s/ Edward E. Mattner
                                           Name:  Edward E. Mattner
                                           Title:    President and Treasurer

                                       ACF INDUSTRIES INCORPORATED

                                       By:      /s/ Robert J. Mitchell
                                           Name:  Robert J. Mitchell
                                           Title:    Senior Vice President

                                       ACF INDUSTRIES HOLDING CORP.

                                       By:      /s/ Robert J. Mitchell
                                           Name:  Robert J. Mitchell
                                           Title:    President and Treasurer

                                       HIGHCREST INVESTORS CORP.

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

             [Signature Page of 13D Amendment No. 7 with respect to
                          National Energy Group, Inc.]

                                       36


<PAGE>


     After  reasonable  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.

Dated: December 12, 2000

                                       BUFFALO INVESTORS CORP.

                                       By:      /s/ Edward E. Mattner
                                           Name:  Edward E. Mattner
                                               Title:    President

                                       STARFIRE HOLDING CORPORATION

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

                                       HIGH RIVER LIMITED PARTNERSHIP

                                       By:      BARBERRY CORP.
                                       Its:     General Partner

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

                                       RIVERDALE LLC

                                       By:      /s/ Carl C. Icahn
                                                Carl C. Icahn
                                                       Its: Member

                                       GASCON PARTNERS

                                       By:      Cigas Corp.
                                       Its:     General Partner

                                       By:      /s/ Edward E. Mattner
                                           Name:  Edward E. Mattner
                                               Title:    President

             [Signature Page of 13D Amendment No. 7 with respect to
                          National Energy Group, Inc.]

                                       37


<PAGE>


         After reasonable  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.

Dated: December 12, 2000


                                        CIGAS CORP.

                                        By:      /s/ Edward E. Mattner
                                            Name:  Edward E. Mattner
                                                Title:    President

                                        ASTRAL GAS CORP.

                                        By:      /s/ Edward E. Mattner
                                            Name:  Edward E. Mattner
                                                Title:    President

                                        BARBERRY CORP.

                                        By:      /s/ Carl C. Icahn
                                            Name:  Carl C. Icahn
                                            Title:    President

                                                  /s/ Carl C. Icahn
                                                      Carl C. Icahn

             [Signature Page of 13D Amendment No. 7 with respect to
                          National Energy Group, Inc.]

                                       38


<PAGE>


                                                                       Exhibit 1

                             JOINT FILING AGREEMENT

         In accordance  with Rule 13d-1(f) under the Securities  Exchange Act of
1934, as amended, the persons named below agree to the joint filing on behalf of
each of them of a statement on Schedule 13D (including  amendments thereto) with
respect  to the Class A Common  Stock,  par value $.01 per  share,  of  National
Energy  Group,  Inc.  and  further  agree that this Joint  Filing  Agreement  be
included  as an  Exhibit  to  such  joint  filings.  In  evidence  thereof,  the
undersigned,  being duly  authorized,  have executed this Joint Filing Agreement
this 12th day of December, 2000.

                                       ARNOS CORP.

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:   President

                                       UNICORN ASSOCIATES CORPORATION

                                       By:      /s/ Edward E. Mattner
                                           Name:  Edward E. Mattner
                                           Title:    President and Treasurer

                                       ACF INDUSTRIES INCORPORATED

                                       By:      /s/ Robert J. Mitchell
                                           Name:  Robert J. Mitchell
                                           Title:    Senior Vice President

                                       ACF INDUSTRIES HOLDING CORP.

                                       By:      /s/ Robert J. Mitchell
                                           Name:  Robert J. Mitchell
                                           Title:    President and Treasurer

                                       HIGHCREST INVESTORS CORP.

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

   [Signature Page of Joint Filing Agreement for Schedule 13D with respect to
                          National Energy Group, Inc.]

                                       39


<PAGE>



                                       BUFFALO INVESTORS CORP.

                                       By:      /s/ Edward E. Mattner
                                           Name:  Edward E. Mattner
                                               Title:    President

                                       STARFIRE HOLDING CORPORATION

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

                                       HIGH RIVER LIMITED PARTNERSHIP

                                       By:      BARBERRY CORP.
                                       Its:     General Partner

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

                                       BARBERRY CORP.

                                       By:      /s/ Carl C. Icahn
                                           Name:  Carl C. Icahn
                                           Title:    President

                                                 /s/ Carl C. Icahn
                                                     Carl C. Icahn

   [Signature Page of Joint Filing Agreement for Schedule 13D with respect to
                          National Energy Group, Inc.]

                                       40



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