UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                 SCHEDULE 13G/A
                                 (Rule 13D-102)


                    Under the Securities Exchange Act of 1934
                                (Amendment No. 5)


                             STMicroelectronics N.V.

--------------------------------------------------------------------------------
                                (Name of Issuer)

               Common Shares, nominal value (euro) 1.04 per share

--------------------------------------------------------------------------------
                         (Title of Class of Securities)

                                    861012102

--------------------------------------------------------------------------------
                                 (CUSIP Number)

                                December 31, 2004

--------------------------------------------------------------------------------
             (Date of Event Which Requires Filing of this Statement)

         Check the appropriate box to designate the rule pursuant to which this
Schedule is filed:

         [ ]      Rule 13d-1 (b)
         [ ]      Rule 13d-1 (c)
         |X|      Rule 13d-1 (d)


* 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 the
disclosures provided in a prior cover page.

The information required in 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).

                         (Continued on following pages)



                                  Page 1 of 31



CUSIP No. 861012102                    13G                    Page 2 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                STMicroelectronics Holding II B.V. ("ST Holding II")
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

             (a) |X|
             (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION


                The Netherlands
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                278,483,280**
--------------------------------------------------------------------------------
10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                [ ]
--------------------------------------------------------------------------------
11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                30.8%*
--------------------------------------------------------------------------------
12    TYPE OF REPORTING PERSON*

                HC
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on the STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 3 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                STMicroelectronics Holding N.V. ("ST Holding")
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

             (a) |X|
             (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION

                The Netherlands
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                278,483,280**
--------------------------------------------------------------------------------
10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                [ ]
--------------------------------------------------------------------------------
11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                30.8%*
--------------------------------------------------------------------------------
12    TYPE OF REPORTING PERSON*

                HC
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 4 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                FT1CI
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

             (a) |X|
             (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION

                France
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                278,483,280**
--------------------------------------------------------------------------------
10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                [ ]
--------------------------------------------------------------------------------
11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                30.8%*
--------------------------------------------------------------------------------
12       TYPE OF REPORTING PERSON*

                HC
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 5 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                Finmeccanica S.p.A. ("Finmeccanica")
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

             (a) |X|
             (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION

                Italy
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9        AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                    278,483,280**
--------------------------------------------------------------------------------
10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                    [ ]
--------------------------------------------------------------------------------
11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                    30.8%*
--------------------------------------------------------------------------------
12       TYPE OF REPORTING PERSON*

                  CO
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 6 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                Cassa Depositi e Prestiti S.p.A. ("CDP")
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

             (a) |X|
             (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION

                Italy
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                278,483,280**
--------------------------------------------------------------------------------
10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                [ ]
--------------------------------------------------------------------------------
11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                30.8%*
--------------------------------------------------------------------------------
12    TYPE OF REPORTING PERSON*

                CO
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 7 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

      Societe des Participations du CEA (commercially known as "Areva", formerly
      known as CEA-Industrie)
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

      (a) |X|
      (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION

                France
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                278,483,280**
--------------------------------------------------------------------------------
10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                [ ]
--------------------------------------------------------------------------------
11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                30.8%*
--------------------------------------------------------------------------------
12    TYPE OF REPORTING PERSON*

                CO
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 8 of 31 Pages

--------------------------------------------------------------------------------
1     NAME OF REPORTING PERSON
      S.S. OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

                France Telecom
--------------------------------------------------------------------------------
2     CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*

             (a) |X|
             (b) [ ]
--------------------------------------------------------------------------------
3     SEC USE ONLY

--------------------------------------------------------------------------------
4     CITIZENSHIP OR PLACE OF ORGANIZATION

                France
--------------------------------------------------------------------------------
                    5     SOLE VOTING POWER
    NUMBER OF
     SHARES                     NONE
  BENEFICIALLY
    OWNED BY
      EACH
    REPORTING
     PERSON
      WITH
--------------------------------------------------------------------------------
                    6     SHARED VOTING POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
                    7     SOLE DISPOSITIVE POWER

                                NONE
--------------------------------------------------------------------------------
                    8     SHARED DISPOSITIVE POWER

                                30.8%* (See Item 4(a) and Exhibit 1)
--------------------------------------------------------------------------------
9     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

                278,483,280**
--------------------------------------------------------------------------------
10    CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES*

                [ ]
--------------------------------------------------------------------------------
11    PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

                30.8%*
--------------------------------------------------------------------------------
12    TYPE OF REPORTING PERSON*

                CO
--------------------------------------------------------------------------------
*  Based upon 905,308,997 common shares issued as of December 31, 2004 as shown
   on STMicroelectronics N.V.'s share registry.
** Based upon (i) 202,059,876 common shares held of record by ST Holding II on
   STMicroelectronics N.V.'s share registry; (ii) 26,423,404 common shares held
   of record by Societe Generale as Escrow Agent for ST Holding II and France
   Telecom in connection with the issuance of France Telecom's 6.75% notes due
   August 6, 2005 mandatorily exchangeable for shares of STMicroelectronics
   N.V.; (iii) 20,000,000 common shares held by BNP Paribas Securities Services
   as Escrow Agent for Finmeccanica Finance S.p.A. in connection with its
   issuance of 0.375% notes exchangeable for shares of STMicroelectronics N.V.;
   (iv) 7,000,000 shares held by BNP Paribas Securities Services for
   Finmeccanica in the account of ST Holding II; and (v) 23,000,000 shares lent
   to Merrill Lynch (13,000,000) and Lehman Brothers (10,000,000) in hedging
   transactions by Finmeccanica Finance S.p.A.





CUSIP No. 861012102                    13G                    Page 9 of 31 Pages


Item 1(a).        Name of Issuer:

                  STMicroelectronics N.V. (the "Company")

Item 1(b).        Address of Issuer's Principal Executive Offices:

                  STMicroelectronics N.V.
                  39, Chemin du Champ des Filles
                  1228 Plan-Les-Ouates
                  Geneva, Switzerland

Item 2(a).        Name of Persons Filing:

                  The current members of the Group of STMicroelectronics N.V.
shareholders consisting of:

                  (i)      ST Holding II
                  (ii)     ST Holding
                  (iii)    FT1CI
                  (iv)     Finmeccanica
                  (v)      Cassa Depositi e Prestiti
                  (vi)     Societe des Participations du CEA (commercially
                           known as "Areva")
                  (vii)    France Telecom

Item 2(b).        Address of Principal Business Office, or if none, Residence:

                  (i)      STMicroelectronics Holding II B.V.
                           "Weenatoren" 2d floor
                           Weena 327, 329
                           3013 AL Rotterdam
                           The Netherlands

                  (ii)     STMicroelectronics Holding N.V.
                           "Weenatoren" 2d floor
                           Weena 327, 329
                           3013 AL Rotterdam
                           The Netherlands

                  (iii)    FT1CI
                           27-29, rue Le Peletier
                           75433 Paris Cedex 09
                           France

                  (iv)     Finmeccanica S.p.A.
                           Piazza Monte Grappa, 4
                           00195 Rome
                           Italy





CUSIP No. 861012102                    13G                   Page 10 of 31 Pages


                  (v)      Cassa Depositi e Prestiti S.p.A.
                           Via Goito, 4
                           00185 Rome
                           Italy

                  (vi)     Societe des Participations du CEA (commercially
                           known as "Areva")
                           27-29, rue Le Peletier
                           75433 Paris Cedex 09
                           France

                  (vii)    France Telecom
                           6, place d'Alleray
                           75505 Paris Cedex 15
                           France

Item 2(c).        Citizenship:

                  (i)      The Netherlands

                  (ii)     The Netherlands

                  (iii)    France

                  (iv)     Italy

                  (v)      Italy

                  (vi)     France

                  (vii)    France


Item 2(d).        Title of Class of Securities:

                  Common Shares, nominal value (euro) 1.04 per Share

Item 2(e).        CUSIP Number:

                  861012102

Item 3.           Item 3 is not applicable.

Item 4(a).        Amount Beneficially Owned:

                  278,483,280 shares of common stock are beneficially owned by
                  ST Holding II. These amounts are held of record on
                  STMicroelectronics N.V.'s share registry as follows:




CUSIP No. 861012102                    13G                   Page 11 of 31 Pages


                  (i)      202,059,876 common shares held of record by ST
                           Holding II on STMicroelectronics N.V.'s share
                           registry;

                  (ii)     26,423,404 common shares held of record by Societe
                           Generale as Escrow Agent for ST Holding II and France
                           Telecom in connection with the issuance of France
                           Telecom's 6.75% notes due August 6, 2005 mandatorily
                           exchangeable for shares of STMicroelectronics N.V.;

                  (iii)    20,000,000 common shares held by BNP Paribas
                           Securities Services as Escrow Agent for Finmeccanica
                           Finance S.p.A. in connection with its issuance of
                           0.375% notes exchangeable for shares of
                           STMicroelectronics N.V.;

                  (iv)     7,000,000 shares held by BNP Paribas Securities
                           Services for Finmeccanica in the account of ST
                           Holding II; and

                  (v)      23,000,000 shares lent to Finmeccanica, which in turn
                           lent 13 million shares to Merrill Lynch and 10
                           million shares to Lehman Brothers, which are
                           scheduled to expire in December 2005.

                  ST Holding II retains all voting rights related to common
                  shares in escrow, and if the France Telecom or Finmeccanica
                  exchangeable notes are not redeemed for STMicroelectronics
                  N.V. common shares, the common shares will be released from
                  escrow.

                  ST Holding II is a wholly owned subsidiary of
                  STMicroelectronics Holding N.V. which is jointly controlled by
                  FT1CI, CDP and Finmeccanica (see Exhibit 1 attached hereto.)
                  FT1CI is jointly controlled by Areva Group and France Telecom.

Item 4(b).        Percent of Class:

                  30.8% based upon 905,308,997 common shares issued as of
                  December 31, 2004 as shown on STMicroelectronics N.V.'s share
                  registry.


Item 4(c).        Number of shares as to which such person has:

                  Please see Items 5, 6, 7, 8, 9 and 11 of each cover sheet for
                  each filing entity.

Item 5.           Ownership of Five Percent or Less of a Class

                  If this statement is being filed to report the fact that as of
                  the date hereof the reporting person has ceased to be the
                  beneficial owner of more than five percent of the class of
                  Securities, check the following [ ].

Item 6.           Ownership of More than Five Percent on Behalf of Another
                  Person

                  Item 6 is not applicable.





CUSIP No. 861012102                    13G                   Page 12 of 31 Pages


Item 7.           Identification and Classification of the Subsidiary Which
                  Acquired the Security Being Reported on By the Parent Holding
                  Company

                  Item 7 is not applicable.

Item 8.           Identification and Classification of Members of a Group

                  See attached Exhibit 1 for the identity of each member of the
                  Group and a description of relevant shareholders' agreements.
                  See also, Item 4(a) above.

Item 9.           Notice of Dissolution of Group

                  Item 9 is not applicable.

Item 10.          Certification

                  Item 10 is not applicable.





CUSIP No. 861012102                    13G                   Page 13 of 31 Pages


                                    SIGNATURE

         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.

By: STMicroelectronics Holding N.V., by and on behalf of STMicroelectronics
Holding II B.V., as Managing Member


---------------------------------              ---------------------------------
           (Date)                                         (Date)


---------------------------------              ---------------------------------
           (Signature)                                    (Signature)

Name: Umberto d'Agostino                       Name: Bertrand Loubert
Title: Managing Director,                      Title: Managing Director,
STMicroelectronics Holding N.V.                STMicroelectronics Holding N.V.





CUSIP No. 861012102                    13G                   Page 14 of 31 Pages


                                    SIGNATURE

         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.

By: STMicroelectronics Holding N.V.


---------------------------------              ---------------------------------
           (Date)                                         (Date)


---------------------------------              ---------------------------------
           (Signature)                                    (Signature)

Name: Umberto d'Agostino                       Name: Bertrand Loubert
Title: Managing Director                       Title: Managing Director





CUSIP No. 861012102                    13G                   Page 15 of 31 Pages


                                    SIGNATURE

         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.

By: FT1CI


                                               ---------------------------------
                                                          (Date)


                                               ---------------------------------
                                                          (Signature)

                                               Name:  Gerald Arbola
                                               Title: Chairman of the 
                                                      Board of Directors





CUSIP No. 861012102                    13G                   Page 16 of 31 Pages


                                    SIGNATURE

         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.

By: Finmeccanica S.p.A.


                                             ---------------------------------
                                                        (Date)


                                             ---------------------------------
                                                        (Signature)

                                             Name:  Pier Francesco Guarguaglini
                                             Title: Chairman and Chief Executive
                                                    Officer





CUSIP No. 861012102                    13G                   Page 17 of 31 Pages


                                    SIGNATURE

         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.

By: Cassa Depositi e Prestiti S.p.A.


                                               ---------------------------------
                                                          (Date)


                                               ---------------------------------
                                                          (Signature)

                                               Name:  Salvatore Rebecchini
                                               Title: Chairman





CUSIP No. 861012102                    13G                   Page 18 of 31 Pages


                                    SIGNATURE

         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.

By: Societe des Participations du CEA (commercially known as "Areva")


                                         ---------------------------------
                                                    (Date)


                                         ---------------------------------
                                                    (Signature)

                                         Name:  Gerald Arbola
                                         Title: Member of the Managing Board and
                                                 Chief Financial Officer





CUSIP No. 861012102                    13G                   Page 19 of 31 Pages


                                    SIGNATURE

         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.

By: France Telecom


                                               ---------------------------------
                                                          (Date)


                                               ---------------------------------
                                                          (Signature)

                                               Name:   Pierre Hilaire
                                               Title:  Director of Financial
                                                       Information





CUSIP No. 861012102                    13G                   Page 20 of 31 Pages


                                    EXHIBIT 1

Major Shareholders

                  STMicroelectronics Holding II B.V. ("ST Holding II") is a
wholly owned subsidiary of STMicroelectronics Holding N.V. ("ST Holding"). As of
December 31, 2004, based on voting interests, FT1CI (the "French Shareholders")
and a consortium of Italian shareholders (the "Italian Shareholders") made up of
Cassa Depositi e Prestiti S.p.A. ("CDP") and Finmeccanica S.p.A. held exactly
50% each of ST Holding. As of December 31, 2004, based on economic interests,
FT1CI held 45.2% of ST Holding and the Italian Shareholders held 54.8% of ST
Holding. FT1CI consists of two principal French shareholders, France Telecom,
and Societe des Participations du CEA (commercially known as "Areva", formerly
known as CEA-Industrie), and France Telecom. Areva is a corporation controlled
by the French atomic energy commission. France Telecom is a widely held
telecommunications company in which the French State holds a stake of greater
than 40%, and which by virtue of its significant holding, has important powers.
CDP is an Italian financial intermediary 70% owned by the Italian Ministero
dell'Economia e delle Finanze ("the Italian Ministry of Economics and Finance")
and 30% owned by a consortium of 65 Italian banking foundations. Finmeccanica is
an Italian holding company owned by both the the Italian Ministry of Economics
and Finance, which controls important actions of Finmeccanica due to its
significant holding in it, Fintecna and the public. The Italian Ministry of
Economics and Finance has appointed a majority of the members of Finmeccanica's
board of directors and pursuant to the provisions of its articles of association
and Italian law, retains veto rights over certain major transactions involving
Finmeccanica.

                  Certificats d'investissement of Areva are listed on Euronext
Paris. The shares of France Telecom are listed on Euronext Paris and its
American Depositary Receipts on the New York Stock Exchange. Finmeccanica is
listed on the Italian Mercato Telematico Azionario ("Telematico") and is
included in the S&P/MIB stock index.

                  ST Holding owned 90% of the Company's shares before the
Company's initial public offering in 1994, and has since then gradually reduced
its participation, going below the 66% threshold in 1997, below the 50%
threshold in 1999 and below the one-third threshold in 2004. ST Holding may
further dilute its shares as provided below in "--Shareholders'
agreements--Disposals of the Company's Common Shares" and pursuant to the
eventual conversion of the Company's outstanding convertible instruments.

                  Set forth below is a table of ST Holding II's holdings in the
Company as of the end of each of the past three financial years:

                                                              Common SharesOwned
                                                              ------------------
                                                                Number       %
                                                                ------      ---
December 31, 2004                                             278,483,280   30.8
December 31, 2003                                             311,483.280   34.5
December 31, 2002                                             320,483.280   35.6





CUSIP No. 861012102                    13G                   Page 21 of 31 Pages


                  The chart below illustrates the shareholding structure (based
on corporate governance rights for the Company, and based on economic interests
for the holding company) as of December 31, 2004, without giving effect to the
potential exchanges of shareholder exchangeable bonds for Company shares, which
became exchangeable last January 2, 2004:




                                         --------------------  ---------------------  ----------------  --------------
                                           Consortium of 65     Italian Ministry of
                                           Italian Banking         Economics and          Fintecna          Public
                                             Foundations              Finance
                                         --------------------  ---------------------  ----------------  --------------
                                                     |                  |       |              |               |
                                                     |                  |       -----------    |               |
                                                 30% |              70% |           32.2% |    | 1.7%          | 66.1%
                                                     |                  |                 |    |               |
                                                     |                  |                 |    |               |
-------------------  ----------------------  ---------------------------------   --------------------------------
    Areva Group          France Telecom          Cassa Depositi e Prestiti                 Finmeccanica
-------------------  ----------------------  ---------------------------------   --------------------------------
        |                       |                                       |                      |
        |                       |                                       |                      |
        |                       |                                       |                      |
    79% |                   21% |                             60.9%(3)% |                      | 39.1%(3)
        |                       |                                       |                      |
-------------------------------------------                  -------------------------------------------
                  FT1CI                                                  CDP / Finmeccanica(4)
-------------------------------------------                  -------------------------------------------
                    |                                                              |
            50%(1)  |                                                              | 50%(1)
                    |                                                              |
                    |                                                              |
                    |                                                              |
                    |                                                              |
                    |          -------------------------------------------         |
                     ----------                ST Holding                 ---------
                               -------------------------------------------
                                      |
                                      |
                                 100% |
                                      |
-------------------------------------------                  -------------------------------------------
               ST Holding II                                                   Public
-------------------------------------------                  -------------------------------------------
                                      |                          |
                                      |                          |
                                30.8% |                          | 69.2%(2)
                                      |                          |
                               -------------------------------------------
                                         STMicroelectronics N.V.
                               -------------------------------------------



------------
(1)  Based on corporate governance rights, which, pursuant to the STH
     Shareholders' Agreement (as further described below), may be equally shared
     until 2008. According to the STH Shareholders' Agreement, each of FT1CI and
     Finmeccanica (and CDP) must hold at least 47.5% of ST Holding. As of
     December 31, 2004, based on economic interests, FT1CI held approximately
     45.2% of ST Holding, CDP held 33.4% of ST Holding, and Finmeccanica held
     21.4% of ST Holding.
(2)  Includes 1.5% of our share capital held by us in treasury.
(3)  CDP owns 33.4% of ST Holding, while Finmeccanica owns 21.4% of ST Holding.
(4)  Not a legal entity, purely for illustrative purposes.





CUSIP No. 861012102                    13G                   Page 22 of 31 Pages


                  On December 17, 2001, France Telecom issued
(euro)1,522,950,000 aggregate principal amount of 1.0% notes due December 17,
2004, redeemable by way of exchange for up to 30 million of the Company's
existing common shares on or after January 2, 2004 (the "2001 Notes"). On July
30, 2002, France Telecom finalized the private placement to institutional
investors of (euro)442.2 million of 6.75% notes due August 6, 2005, mandatorily
exchangeable into the Company's existing common shares held by France Telecom
(the "2002 Notes"). The 2002 Notes are exchangeable for the Company's common
shares from January 2, 2004 and the number of shares that France Telecom will
deliver to the holders of the notes is a maximum of 26.42 million shares and a
minimum of 20.13 million shares, depending on the price of the Company's shares
at maturity. As of December 31, 2004, none of the 2002 Notes had been exchanged
for Shares.

                  Pursuant to the terms and conditions of the 2001 Notes, on
March 9, 2004, France Telecom redeemed the 2001 Notes, and the shares underlying
the 2001 Notes held in escrow by BNP Paribas Securities Services (France) were
released from escrow. On December 3, 2004, France Telecom sold through ST
Holding those 30 million shares to institutional investors in a block trade.

                  On August 12, 2003, Finmeccanica Finance S.A., a subsidiary of
Finmeccanica, issued (euro)438,725,000 aggregate principal amount of 0.375%
senior unsecured exchangeable notes due 2010, guaranteed by Finmeccanica (the
"Finmeccanica notes"). On September 2, 2003, Finmeccanica Finance S.A. issued an
additional (euro)62,675,000 of Finmeccanica notes, raising the issue size to
(euro)501,400,000. The Finmeccanica notes are exchangeable beginning on January
2, 2004 into up to 20 million of the Company's existing common shares held by ST
Holding II, or 2.3% of its then-outstanding share capital. During the second
half of 2003, ST Holding II sold on the market a total of nine million shares,
or approximately 1.01% of the Company's issued and outstanding common shares
corresponding to indirect shareholdings held by Finmeccanica. During 2004,
Finmeccanica sold 3 million shares to institutional investors in block trades.
During 2004, Finmeccanica lent 23 million of Company shares it holds indirectly
through ST Holding. The securities lending arrangements will expire in December
2005. Finally, Finmeccanica caused ST Holding II to transfer 7 million shares
corresponding to its indirect stake in the Company to an account at BNP Paribas
Securities Services, Luxembourg. Finally, on December 23, 2004, Finmeccanica
transferred 93 million of its indirect holding of Company shares to CDP, and CDP
signed a deed of adherence to the Shareholders' Agreement (as defined below).

                  Following the recent sales by France Telecom and Finmeccanica,
and assuming the France Telecom 6.75% notes are exchanged for the Company's
common shares at the maximum exchange ratio, (if not adjusted) (the "France
Telecom Maximum Exchange Ratio") that the Finmeccanica 0.375% notes are
exchanged for the Company's common shares at the initial exchange ratio, that
the 23 million shares of Company shares subject to the Finmeccanica securities
lending arrangements were sold, and that the 7 million Company shares held
directly by Finmeccanica were sold, ST Holding II would own approximately 22.3%
of the Company's issued common shares. Making the same assumptions, CDP's actual
indirect interest in the Company's shares would be approximately 10.3%,
Finmeccanica's actual indirect interest would be approximately 1.8% and FT1CI's
actual direct interest would be approximately 11.0%, consisting of an Areva
stake of approximately 11.0% and a France Telecom stake of zero.





CUSIP No. 861012102                    13G                   Page 23 of 31 Pages


Shareholders' Agreements

STH Shareholders' Agreement

                  In connection with the Company's formation, Thomson-CSF (now
called Thales) and STET (now called Telecom Italia S.p.A.) as the Company's
shareholders, entered into a shareholders' agreement on April 30, 1987 (as
amended, the "STH Shareholders' Agreement"), which was amended and restated on
March 17, 2004. The current parties to the STH Shareholders' Agreement are
FT1CI, France Telecom, Areva and Finmeccanica. The March 17, 2004 amended and
restated agreement supercedes and replaces all previous agreements. CDP became
bound by the STH Shareholders' Agreement pursuant to a deed of adherence dated
December 23, 2004 following its purchase from Finmeccanica of a majority of
Finmeccanica's indirect interest in the Company through ST Holding. CDP and
Finmeccanica entered into an agreement that provides for the transfer of certain
of the rights of Finmeccanica under the STH Shareholders' Agreement to CDP. See
"Other Shareholders' Agreements - Italian Shareholders' Pact" below. Therefore,
references to the rights and obligations of Finmeccanica under the STH
Shareholders' Agreement described below also refer to CDP.

                  Pursuant to the terms of the Holding Shareholders' agreement
and for the duration of such agreement, FT1CI, on the one hand, and
Finmeccanica, on the other hand, have agreed to maintain equal interests in the
Company's share capital. See further details below.

         Restructuring of the Holding Companies

                  If necessary, the parties agreed to restructure the two
holding companies (ST Holding and ST Holding II) to simplify the structure to
the extent possible or desirable. In any case, at least one holding company will
continue to exist to hold the Company's common shares. The company that now
holds or may hold the Company's shares in the future for indirect shareholders
is referred to below as the "holding company". The STH Shareholders' Agreement
also provides that FT1CI may be replaced as a shareholder in the holding company
by France Telecom and/or Areva, at their request.

         Standstill

                  The STH Shareholders' Agreement contains a standstill
provision that precludes any of the parties and the parties' affiliates from
acquiring, directly or indirectly, any of the Company's common shares or any
instrument providing for the right to acquire any of the Company's common shares
other than through the holding company. The stand-still is in effect for as long
as such party holds its Company shares through ST Holding. The parties agreed to
continue to hold their stakes in the Company at all times through the current
holding structure of ST Holding and ST Holding II, subject to exercising the
preference share option granted to ST Holding if ST Holding were to choose not
to exercise such rights directly, as further described below.





CUSIP No. 861012102                    13G                   Page 24 of 31 Pages


         Corporate Governance

                  The STH Shareholders' Agreement provides for a balanced
corporate governance of the indirect interests on the Company between FT1CI and
Finmeccanica (references to Finmeccanica now include the stake transferred to
CDP, as well as CDP, and together with FT1CI, the "STH shareholders") for the
duration of the "Balance Period", despite actual differences in indirect
economic interest in the Company. The "Balance Period" is defined as (i) a
period through March 17, 2008, provided that each of France Telecom, Areva and
Finmeccanica (which for Finmeccanica, includes the stake it transferred to CDP)
owns at all times a voting stake at least equal to 9.5% of the issued and
outstanding shares of the Company, and (ii) subject to the aforementioned
condition, thereafter as long as each ST Holding shareholder at any time,
including as a result of the exercise of the "Re-balancing Option" (as defined
below), a voting stake equal to at least 47.5% of the total voting stakes.
During the Balance Period, each of FT1CI and Finmeccanica (together with CDP)
has an option to rebalance their shareholdings, referred to as the "Rebalancing
Option", as further described below.

                  During the Balance Period, the STH shareholders agree that the
holding company will have a managing board comprised of two members (one member
designated by FT1CI, and one designated by common agreement of Finmeccanica and
CDP pursuant to the Italian Shareholders Pact as described below) and a
supervisory board comprised of eight members (four designated by FT1CI and four
designated by common agreement of Finmeccanica and CDP pursuant to the Italian
Shareholders Pact as described below). The chairman of the supervisory board of
the holding company shall be designated for a three-year term by one shareholder
(with the other shareholder entitled to designate the Vice-Chairman), such
designation to alternate between Finmeccanica and CDP on the one hand and FT1CI
on the other hand. The current Vice-Chairman, Mr. Gerald Arbola, shall exercise
the function of Chairman until a Chairman is named. The parties agreed that the
next chairman of the supervisory board of the holding company will be appointed
by FT1CI.

                  During the Balance Period, any other decision, to the extent
that a resolution of the holding company is required, must be pursuant to the
unanimous approval of the shareholders, including but not limited to the
following: (i) the definition of the role and structure of the Company's
Managing Board and Supervisory Board, and those of the holding company; (ii) the
powers of the Chairman and the Vice-Chairman of the Company's Supervisory Board,
and that of the holding company; (iii) information by the Company's Managing
Board and by the Company's Supervisory Board, and those of the holding company;
(iv) treatment of confidential information; (v) appointment of any additional
members of the Company's Managing Board and that of the holding company; (vi)
remuneration of the members of the Company's Managing Board and those of the
holding company; (vii) internal audit of the Company and of the holding company;
(viii) industrial and commercial relationships between the Company and
Finmeccanica or the Company and either or both FT1CI shareholders, or any of
their affiliates; and (ix) any of the decisions listed in article 16.1 of the
Company's Articles of Association including the Company's budget and
pluri-annual plans.

                  However, in the case of a hostile take-over bid for the
Company, any shareholder may, upon its sole request, obtain the activation by
the holding company of the




CUSIP No. 861012102                    13G                   Page 25 of 31 Pages


option agreement relating to the preference shares described below (provided
that such activation is triggered by the Company's Supervisory Board), in which
case the STH shareholders shall be required to finance the subscription by the
holding company of the preference shares, and such subscription and payment
shall be completed only to the extent required to implement the option agreement
so as to consolidate a majority of the Company's voting rights (and to the
exclusion of any further acquisitions of the Company's common shares, which
require the unanimous approval of the Company's shareholders).

                  As regards the Company during the Balance Period: (i) each of
the STH shareholders (FT1CI on the one hand, and Finmeccanica and CDP on the
other hand) shall have the right to insert on a list prepared for proposal by
the holding company to the Company's general meeting of shareholders the same
number of members for election to the Supervisory Board, and the holding company
shall vote in favor of such members; (ii) the STH shareholders will cause the
holding company to submit to the Company's general meeting of shareholders and
to vote in favor of a common proposal for the appointment of the Managing Board;
and (iii) any decision relating to the voting rights of the holding company in
the Company shall require the unanimous approval of the holding company
shareholders and shall be submitted by the holding company to the Company's
general meeting of shareholders. The STH shareholders also agreed that the
Chairman of the Company's Supervisory Board will be designated upon proposal of
an STH shareholder for a three-year term, and the Vice-Chairman of the Company's
Supervisory Board will be designed upon proposal of the other STH shareholder
for the same period, and vice-versa for the following three-year term. The STH
shareholders further agreed that the STH shareholder proposing the appointment
of the Chairman be entitled to propose the appointment of the Vice-Secretary of
the Company's Supervisory Board, and the STH shareholder proposing the
appointment of the Vice-Chairman be entitled to propose the appointment of the
Secretary of the Company's Supervisory Board. Finally, each STH shareholder is
entitled to appoint a Financial Controller to the Supervisory Board. The
Company's Secretary, Vice-Secretary and two Financial Controllers are referred
to as professionals (not members) of the Company's Supervisory Board.

                  In addition, the following resolutions, to the extent that a
resolution of the holding company is required, must be resolved upon by a
shareholders' resolution of the holding company, which shall require the
unanimous approval of the STH shareholders: (i) any alteration in the holding
company's articles of association; (ii) any issue, acquisition or disposal by
the holding company of its shares or change in share rights; (iii) any
alteration in the Company's authorized share capital or issue by the Company of
new shares and/or of any financial instrument giving rights to subscribe for the
Company's common shares; any acquisition or disposal by the holding company of
the Company's shares and/or any right to subscribe for the Company's common
shares; any modification to the rights attached to the Company's common shares;
any merger, acquisition or joint venture agreement to which the Company is or is
proposed to be a party; and any other items on the agenda of the Company's
general shareholders meeting; (iv) the liquidation or dissolution of the holding
company; (v) any legal merger, legal de-merger, acquisition or joint-venture
agreement to which the holding company is proposed to be a party; and (vi) the
adoption or approval of the Company's annual accounts or those of the holding
company or a resolution concerning a dividend distribution by the Company, it
being understood that a dividend distribution by the




CUSIP No. 861012102                    13G                   Page 26 of 31 Pages


Company and the holding company will be regulated by the tracking stock issued
by the holding company to the STH shareholders.

                  After the end of the Balance Period, unanimous approval by the
shareholders of the holding company remains required to approve:

(i)      As long as any of the shareholders indirectly owns at least equal to
         the lesser of 3% of the Company's issued and outstanding share capital
         or 10% of the remaining STH stake in the Company at such time, with
         respect to the holding company, any changes to the articles of
         association, any issue, acquisition or disposal of shares in the
         holding company or change in the rights of its shares, its liquidation
         or dissolution and any legal merger, de-merger, acquisition or joint
         venture agreement to which the holding company is proposed to be a
         party. However the minority shareholder may not prevent the other
         shareholder from increasing the capital of the holding company in order
         to finance the acquisition of additional shares of the Company as a
         defense against a hostile takeover bid for the Company.

(ii)     As long as any of the shareholders indirectly owns at least 33% of the
         holding company, certain changes to the Company's articles of
         association (including any alteration in the Company's authorized share
         capital, or any issue of share capital and/or financial instrument
         giving the right to subscribe for the Company's common shares, changes
         to the rights attached to the Company's shares, changes to the
         preemptive rights, issues relating to the form, rights and transfer
         mechanics of the shares, the composition and operation of the Managing
         and Supervisory Boards, matters subject to the Supervisory Board's
         approval, the Supervisory Board's voting procedures, extraordinary
         meetings of shareholders and quorums for voting at shareholders'
         meetings).

(iii)    Any decision to vote the Company's shares held by the holding company
         at any general meeting of the Company's shareholders with respect to
         any substantial and material merger decision. In the event of a failure
         by the shareholders to reach a common decision on the relevant merger
         proposal, the Company's shares attributable to the minority shareholder
         and held by the holding company will be counted as present for purposes
         of a quorum of shareholders at one of the Company's shareholders'
         meetings, but will not be voted (i.e., will be abstained from the vote
         in a way that they will not be counted as a negative vote or as a
         positive vote).

(iv)     In addition, the minority shareholder will have the right to designate
         at least one member of the list of candidates for the Supervisory Board
         to be proposed by the holding company if that shareholder indirectly
         owns at least 3% of the Company's total issued and outstanding share
         capital, with the majority STH shareholder retaining the right to
         appoint that number of members to the Company's Supervisory Board that
         is at least proportional to such majority STH shareholder's voting
         stake.

                  At the end of the Balance Period, the members of the Company's
Supervisory Board and those of the holding company designated by the minority
shareholder of the holding company will immediately resign upon request of the
holding company's majority shareholder, subject to the rights described in the
previous paragraph.





CUSIP No. 861012102                    13G                   Page 27 of 31 Pages


                  Finally, at the end of the Balance Period, the unanimous
approval required for other decisions taken at the Company level shall only be
compulsory to the extent possible, taking into account the actual power attached
to the direct and indirect shareholding together held by the STH shareholders in
the Company.

         Disposals of the Company's Common Shares

                  The STH Shareholders' Agreement provides that each STH
shareholder retains the right to cause the holding company to dispose of its
stake in the Company at its sole discretion, provided it is pursuant to either
(i) the issuance of financial instruments, (ii) an equity swap, (iii) a
structured finance deal or (iv) a straight sale. ST Holding II may enter into
escrow arrangements with STH shareholders with respect to the Company's shares,
whether this be pursuant to exchangeable notes, securities lending or other
financial instruments. STH shareholders that issue exchangeable instruments may
include in their voting stake the voting rights of the underlying shares
provided they remain freely and continuously held by the holding company as if
the holding company was still holding the full ownership of the shares. STH
shareholders that issue financial instruments with respect to underlying Company
shares may have a call option over those shares upon exchange of exchangeable
notes for common shares.

                  As long as any of the parties to the shareholders' agreement
has a direct or indirect interest in the Company, except in the case of a public
offer, no sales by a party to STH Shareholders' Agreement may be made of any of
the Company's shares or of FT1CI, ST Holding or ST Holding II to any of the
Company's top ten competitors, or any company that controls such competitor.

         Re-adjusting and Re-balancing options

                  The STH Shareholders' Agreement provides that the parties have
the right, subject to certain conditions, to re-balance their indirect holdings
in the Company's shares to achieve parity between FT1CI and Finmeccanica. If at
any time prior to March 17, 2008, the voting stake in the Company of one of the
STH shareholders falls below 9.5% due either to (a) the exchange by a third
party of any exchangeable instruments issued by an STH shareholder or (b) to an
issuance by the Company of new shares subscribed to by a third party, such STH
Shareholder will have the right to notify the other STH Shareholder of its
intention to exercise a "Re-adjusting Option". In such case, the STH
shareholders will cause the holding company to purchase the number of Company
shares necessary to increase the voting stake of such STH shareholder to 9.5% of
the Company's issued and outstanding share capital.

                  If by December 17, 2007, the Balance Period has not already
expired and if on such date the voting stake of one of the STH shareholders has
fallen below 47.5% of the Company's issued and outstanding share capital, such
STH shareholder will have the right to notify the other STH Shareholder of its
intention to exercise a "Re-balance Option" no later than 30 Business Days prior
to March 17, 2008. In such case, the STH shareholders will cause the holding
company to purchase before March 17, 2008 the number of Company Shares necessary
to re-balance at 50/50% the respective voting stakes of the STH shareholders.





CUSIP No. 861012102                    13G                   Page 28 of 31 Pages


         Change of Control Provision

                  The STH Shareholders' agreement provides for tag-along rights,
pre-emptive rights, and provisions with respect to a change of control of any of
the shareholders or any controlling shareholder of FT1CI, on the one hand, and
Finmeccanica, on the other hand. The shareholders may transfer shares of the
holding company or FT1CI to any of the shareholder's affiliates, which would
include the Italian state or the French state with respect to entities
controlled by a state. The shareholders and their ultimate shareholders will be
prohibited from launching any takeover process on any of the other shareholders.

         Non-competition

                  Pursuant to the terms of STH Shareholders' Agreement, neither
the Company nor ST Holding are permitted, as a matter of principle, to operate
outside the field of semiconductor products. The parties to the Holding
Shareholders' agreement also undertake to refrain directly or indirectly from
competing with the Company in the area of semiconductor products, subject to
certain exceptions, and to offer the Company opportunities to commercialize or
invest in any semiconductor product developments by them.

         Deadlock

                  In the event of a disagreement that cannot be resolved between
the parties as to the conduct of the business and actions contemplated by the
Holding Shareholders' agreement, each party has the right to offer its interest
in ST Holding to the other, which then has the right to acquire, or to have a
third party acquire, such interest. If neither party agrees to acquire or have
acquired the other party's interest, then together the parties are obligated to
try to find a third party to acquire their collective interests, or such part
thereof as is suitable to change the decision to terminate the agreement. The
Holding Shareholders' agreement otherwise terminates in the event that one of
the parties thereto ceases to hold shares in ST Holding.

Preference Shares

                  On May 31, 1999, the Company's shareholders at the annual
general meeting approved the creation of 180,000,000 preference shares
(540,000,000 preference shares, as adjusted for the 3-to-1 stock split
implemented in May 2000). These preference shares entitle a holder to full
voting rights at any meeting of shareholders and to a preferential right to
dividends. On the same day, the Company entered into an option agreement with ST
Holding II, most recently amended in September of 2004, which provides that
preference shares shall be issued to ST Holding II upon request, subject to the
adoption of a resolution of the Company's Supervisory Board recognizing that a
hostile takeover or similar action exists and giving the Company's consent to
the exercise of the option and upon payment of at least 25% of the par value of
the preference shares to be issued. Following the 2004 amendment to the ST
Holding II option agreement, the option is contingent upon ST Holding II
retaining at least 19% of the Company's issued share capital at the time of
exercise of the option. The option shall terminate if ST Holding II no longer
owns at least 19% of the Company's issued and outstanding share capital for a
period of twelve consecutive months.





CUSIP No. 861012102                    13G                   Page 29 of 31 Pages


                  Under the STH Shareholders' Agreement, any shareholder can
cause the holding company to exercise the option to acquire the preference
shares in the event of a hostile takeover bid for the Company.

Other Shareholders Agreements

         FT1CI Protocol

                  The shareholders of FT1CI entered into a separate
shareholders' agreement in January 1993. On December 28, 2001 and March 17,
2004, France Telecom and Areva modified this agreement in its entirety to
reflect the STH Shareholders' Agreement between the shareholders of ST Holding
(the "FT1CI protocol").

                  The 2001 FT1CI protocol provides for modified corporate
governance arrangements based on France Telecom's level of ownership of the
Company. It provides that FT1CI shall continue to have five directors, three of
whom shall be chosen by Areva and two of whom shall be chosen by France Telecom,
provided that France Telecom shall only choose one director once its interest in
FT1CI falls below 30%. Also, France Telecom will have the right to nominate a
number of FT1CI representatives to the Supervisory Board of ST Holding, ST
Holding II and the Company in proportion to its holdings, with at least one
member to the extent that FT1CI has at least two on those Supervisory Boards as
long as France Telecom owns at least 20% of the capital of FT1CI. France Telecom
will cause its appointed directors to these entities to resign as necessary if
and when its interest in FT1CI is reduced. Except as set forth below, decisions
with respect to ST Holding, the Company and the Company's subsidiaries may be
taken by simple majority. Certain actions by FT1CI will continue to require the
approval of the France Telecom director or directors. These include (i) all
borrowings above (euro)2 million, (ii) certain loans and advances, (iii)
issuance of guarantees, (iv) changes to any shareholder agreements entered into
by FT1CI, (v) distribution of any dividends and (vi) introduction of any new
shareholder.

                  In case ST Holding II requests the issuance of preference
shares pursuant to the option agreement with the Company, the FT1CI protocol
provides that the payment by FT1CI for the subscription price will be shared on
a pro rata basis between Areva and France Telecom according to the number of the
Company's common shares attributed to each on the date of exercise. Each has
undertaken to pay such subscription amounts according to their respective pro
rata stakes in the Company, provided that the Company's common shares underlying
the France Telecom 6.75% exchangeable notes will not be included in the
computation of France Telecom's stake for that purpose until after July 29,
2005.





CUSIP No. 861012102                    13G                   Page 30 of 31 Pages


                  Transfers of shares in FT1CI to third parties are subject to a
right of preemption, a right of first refusal of the other shareholders, as well
as other provisions. In the event Areva proposes to sell its interest in FT1CI,
in whole or in part, France Telecom has the right to require the acquirer to
purchase its interest as well. Subject to an exception with regards to
outstanding obligations after France Telecom has ceased to be a FT1CI
shareholder, the FT1CI shareholders' agreement terminates upon the termination
of FT1CI or when either party ceases to be a shareholder of FT1CI.

         Italian Shareholders Pact

                  In connection with the transfer of an interest in ST Holding
from Finmeccanica S.p.A. ("Finmeccanica") to CDP, Finmeccanica and CDP entered
into a shareholders' pact (the "Italian Shareholders' Pact") on November 26,
2004 setting forth the rights and obligations of their respective interests as
shareholders of ST Holding. Pursuant to the terms of the Italian Shareholders
Pact, CDP became a party to the STH Shareholders Agreement. Under the Italian
Shareholders' Pact, CDP will have the right to exercise certain corporate
governance rights of Finmeccanica under the STH Shareholders Agreement.

                  The Italian Shareholders' Pact provides that CDP has the right
to appoint one of the two members of the ST Holding's board of directors.
Moreover, CDP will have the right to nominate a number of representatives to the
Supervisory Board of ST Holding, ST Holding II and the Company. In particular,
CDP has the right to propose two members for membership on the Supervisory Board
of the Company, while one member will be proposed by Finmeccanica for so long as
Finmeccanica owns indirectly at least 3% of the capital of the Company. If and
when its indirect interest in the Company is reduced below such threshold,
Finmeccanica will cause its appointed director to resign and be replaced by a
director appointed by CDP.

Statutory Considerations

                  As is the case with other companies controlled by the French
government, the French government has appointed a Commissaire du Gouvernement
and a Controleur d'Etat for FT1CI. Pursuant to Decree No. 94-214, dated March
10, 1994, these government representatives have the right (i) to attend any
board meeting of FT1CI, and (ii) to veto any board resolution or any decision of
the president of FT1CI within ten days of such board meeting (or, if they have
not attended the meeting, within ten days of the receipt of the board minutes or
the notification of such president's decision); such veto lapses if not
confirmed within one month by the Ministry of the Economy or the Secretariat
d'Etat a l'Industrie (Secretary of Industry). FT1CI is subject to certain points
of the arrete of August 9, 1953 pursuant to which the Ministry of the Economy
and any other relevant ministries (a) have the authority to approve decisions of
FT1CI relating to budgets or forecasts of revenues, operating expenses and
capital expenditures, and (b) may set accounting principles and rules of
evaluation of fixed assets and amortization.

                  Pursuant to the principal Italian privatization law, certain
special government powers may be introduced into the bylaws of firms considered
strategic by the Italian




CUSIP No. 861012102                    13G                   Page 31 of 31 Pages


government. In the case of Finmeccanica, these powers were established by
decrees adopted by the Minister of the Treasury on November 8, 1999 and
Finmeccanica's bylaws were subsequently amended on November 23, 1999. The
special powers of the Minister of the Treasury (who will act in agreement with
the Minister of Industry) include (i) the approval or disapproval of the
acquisition of material interests in Finmeccanica's share capital, (ii) approval
of material shareholders' agreements relating to Finmeccanica's share capital,
(iii) appointment of members of Finmeccanica's board of directors and board of
statutory auditors, and (iv) powers to veto resolutions to dissolve
Finmeccanica, transfer its business, merge, conduct spin-offs, sell businesses
or lines of business, including the transfer of equity participations in
subsidiaries or affiliates, transfer its registered office outside of Italy,
change Finmeccanica's corporate purposes or amend or modify any of the Minister
of the Treasury's special powers.

                  Pursuant to Law Decree 269 of September 30, 2003 and Decree of
the Ministry for the Economy and Finance of December 5, 2003, CDP was
transformed from a public entity into a joint stock limited liability company
(societa per azioni). While transforming itself into a holding company, CDP
maintained its public interest purpose. CDP's core business is to finance public
investments and more specifically infrastructure and other major public works
sponsored by regions, local authorities, public agencies and other public
bodies. By virtue of a special provision of Law Decree 269, the Ministry of
Economic and Finance will always be able to exercise its control over CDP.


Registration Rights Agreement

                  The Company's registration rights agreement with ST Holding II
expired on December 15, 2004.