GASNF / Naturgy Energy Group, S.A. - SEC फाइलिंग, वार्षिक रिपोर्ट, प्रॉक्सी स्टेटमेंट

नैचुरजी एनर्जी ग्रुप, एसए
US ˙ OTCPK ˙ ES0116870314

मूलभूत आँकड़े
LEI TL2N6M87CW970S5SV098
CIK 1269920
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Naturgy Energy Group, S.A.
SEC Filings (Chronological Order)
यह पृष्ठ SEC फाइलिंग की एक पूरी, कालानुक्रमिक सूची प्रदान करता है, ओनरशिप फाइलिंग को छोड़कर, जो हम अन्यत्र प्रदान करते हैं।
November 22, 2019 EX-99.(D)

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, Suite 2405 New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 October 15, 2019

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, Suite 2405 New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 October 15, 2019 JPMorgan Chase Bank, N.

November 22, 2019 EX-99.(E)

Certification under Rule 466

Certification under Rule 466 The depositary, JPMorgan Chase Bank, N.A., represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6Pos (Knorr-Bremse AG 333-227925) that the Commission declared effective, with terms of deposit identical to the terms of deposit of this registration statement. (2) That its ability to designate the date and time of eff

November 22, 2019 EX-99.(A)

JPMorgan Chase Bank, N.A. American Depositary Receipt American Depositary Shares Representing Ordinary Shares of Naturgy Energy Group S.A. (Incorporated under the laws of Spain)

Number Each American Depositary Share represents One-Fifth of One Share JPMorgan Chase Bank, N.

November 22, 2019 F-6EF

DMLRY / Daimler AG F-6EF - -

F-6EF 1 e619022f6ef-ne.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT Under THE SECURITIES ACT OF 1933 For American Depositary Shares Evidenced by American Depositary Receipts Naturgy Energy Group S.A. (Exact name of Issuer of deposited securities as specified in its charter) Spain (Jurisdiction of Incorporation or organization of Issuer) JPMorgan Cha

August 23, 2018 F-6 POS

LZRFY / Localiza Rent A Car SA POST EFFECTIVE AMENDMENT NO. 1 TO THE FORM F-6

F-6 POS 1 naturgyf6pos.htm POST EFFECTIVE AMENDMENT NO. 1 TO THE FORM F-6 As filed with the Securities and Exchange Commission on August 23, 2018 Registration No. 333-154483 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST EFFECTIVE AMENDMENT NO. 1 TO THE FORM F-6 REGISTRATION STATEMENT under THE SECURITIES ACT OF 1933 For Depositary Shares Naturgy Energy Group, S.A. (f/k/a Gas Natur

August 23, 2018 EX-1

THE BANK OF NEW YORK MELLON FORM OF AMERICAN DEPOSITARY RECEIPT STATEMENT OF TERMS AND CONDITIONS WITH RESPECT TO AMERICAN DEPOSITARY SHARES SHARES OF COMMON STOCK, OF NATURGY ENERGY GROUP, S.A. (THE “COMPANY”) (INCORPORATED UNDER THE LAWS OF SPAIN)

AMERICAN DEPOSITARY SHARES (One (1) American Depositary Share represents One-Fifth (1/5) of one Share) THE BANK OF NEW YORK MELLON FORM OF AMERICAN DEPOSITARY RECEIPT AND STATEMENT OF TERMS AND CONDITIONS WITH RESPECT TO AMERICAN DEPOSITARY SHARES REPRESENTING SHARES OF COMMON STOCK, OF NATURGY ENERGY GROUP, S.

August 16, 2018 424B3

AMERICAN DEPOSITARY RECEIPT

Filed pursuant to Rule 424(b)(3) Registration Statement on Form F-6 Registration No.

August 14, 2018 424B3

JPMorgan Chase Bank, N.A. American Depositary Receipt American Depositary Shares For Ordinary Shares of Naturgy Energy Group, S.A. (Incorporated under the laws of Spain)

Filed pursuant to Rule 424(b)(3) Registration Statement on Form F-6 Registration No.

August 14, 2018 424B3

Deutsche Bank Trust Company Americas American Depositary Receipt American Depositary Shares representing Ordinary Shares of Naturgy Energy Group, S.A. (Incorporated under the laws of Spain)

Filed pursuant to Rule 424(b)(3) Registration Statement on Form F-6 Registration No.

September 29, 2017 F-6 POS

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT TO FORM F-6 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 For American Depositary Shares Evidenced by American Depositary Receipts Gas Natural SDG S.A. (Exact name

F-6 POS 1 e617260f6pos-gnss.htm 333-172037 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 POST-EFFECTIVE AMENDMENT TO FORM F-6 REGISTRATION STATEMENT Under THE SECURITIES ACT OF 1933 For American Depositary Shares Evidenced by American Depositary Receipts Gas Natural SDG S.A. (Exact name of Issuer of deposited securities as specified in its charter) Spain (Jurisdiction of Incorporation

September 29, 2017 EX-99.(A)

Deutsche Bank Trust Company Americas American Depositary Receipt American Depositary Shares representing Ordinary Shares of Gas Natural SDG S.A. (Incorporated under the laws of Spain)

Number Each American Depositary Share represents One-Fifth of One Share Deutsche Bank Trust Company Americas American Depositary Receipt Evidencing American Depositary Shares representing Ordinary Shares of Gas Natural SDG S.

September 29, 2017 EX-99.(E)

Certification under Rule 466

Certification under Rule 466 The depositary, Deutsche Bank Trust Company Americas, represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6 (Uniper SE, 333-217999) that the Commission declared effective, with terms of deposit identical to the terms of deposit of this registration statement.

May 28, 2014 F-6EF

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As filed with the Securities and Exchange Commission on May 28, 2014 Registration No.

May 28, 2014 EX-99.(D)

LETTERHEAD OF PATTERSON BELKNAP WEBB & TYLER LLP

Exhibit (d) LETTERHEAD OF PATTERSON BELKNAP WEBB & TYLER LLP May 28, 2014 Citibank, N.

May 28, 2014 EX-99.(A)

AMERICAN DEPOSITARY SHARES

Exhibit (a) NUMBER AMERICAN DEPOSITARY SHARES CUSIP # Each American Depositary Share represents one-fifth (1/5) of one share of common stock of the Company AMERICAN DEPOSITARY RECEIPT EVIDENCING AMERICAN DEPOSITARY SHARES REPRESENTING SHARES OF COMMON STOCK OF GAS NATURAL SDG, S.

May 28, 2014 EX-99.(E)

Rule 466 Certification

Exhibit (e) Rule 466 Certification The depositary, Citibank, N.A., represents and certifies the following: 1. That it previously had filed a registration statement on Form F-6 (Registration No. 333-156017), which the U.S. Securities and Exchange Commission declared effective, with terms of deposit identical to the terms of deposit of this Form F-6 Registration Statement except for the shares repre

March 11, 2013 EX-99.(D)

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, 44th Floor New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, 44th Floor New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 March 11, 2013 JPMorgan Chase Bank, N.

March 11, 2013 EX-99.(E)

Certification under Rule 466

Certification under Rule 466 The depositary, JPMorgan Chase Bank, N.A., represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6 (Premier Foods PLC, 333-153944) that the Commission declared effective, with terms of deposit identical to the terms of deposit of this registration statement. (2) That its ability to designate the date and time of eff

March 11, 2013 EX-99.(A)

JPMorgan Chase Bank, N.A. American Depositary Receipt American Depositary Shares For Ordinary Shares of Gas Natural SDG, S.A. (Incorporated under the laws of Spain)

Number Each American Depositary Share represents One-Fifth of One Share JPMorgan Chase Bank, N.

March 11, 2013 F-6EF

-

F-6EF 1 e610681f6ef-gasnatural.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT Under THE SECURITIES ACT OF 1933 For American Depositary Shares Evidenced by American Depositary Receipts Gas Natural SDG, S.A. (Exact name of Issuer of deposited securities as specified in its charter) Spain (Jurisdiction of Incorporation or organization of Issuer) JPMorgan

February 3, 2011 EX-99.(A)

Each American Depositary Share represents One-fifth of One Share Deutsche Bank Trust Company Americas American Depositary Receipt Evidencing American Depositary Shares For Shares of Common Stock of Gas Natural SDG S.A. (Incorporated under the laws of

Number Each American Depositary Share represents One-fifth of One Share Deutsche Bank Trust Company Americas American Depositary Receipt Evidencing American Depositary Shares For Shares of Common Stock of Gas Natural SDG S.

February 3, 2011 F-6EF

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 For American Depositary Shares Evidenced by American Depositary Receipts ________________________________ Gas Natural SDG S.A. (Exact

F-6EF 1 e607997f6ef-gas.htm SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT Under THE SECURITIES ACT OF 1933 For American Depositary Shares Evidenced by American Depositary Receipts Gas Natural SDG S.A. (Exact name of Issuer of deposited securities as specified in its charter) Spain (Jurisdiction of Incorporation or organization of Issuer) DEUTSCHE BANK TR

February 3, 2011 EX-99.(D)

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, 44th Floor New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 February 3, 2011

Ziegler, Ziegler & Associates LLP Counselors at Law 570 Lexington Avenue, 44th Floor New York, New York 10022 (212) 319-7600 Telecopier (212) 319-7605 February 3, 2011 Deutsche Bank Trust Company Americas, as Depositary 60 Wall Street New York, New York 10005 American Depositary Shares evidenced by American Depositary Receipts for deposited shares of the foreign private issuer whose name appears o

February 3, 2011 EX-99.(E)

Certification under Rule 466

Certification under Rule 466 The depositary, Deutsche Bank Trust Company Americas, represents and certifies the following: (1) That it previously had filed a registration statement on Form F-6 (Aurubis AG 333-158470) that the Commission declared effective, with terms of deposit identical to the terms of deposit of this registration statement.

April 1, 2009 CB

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form CB TENDER OFFER/RIGHTS OFFERING NOTIFICATION FORM

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form CB TENDER OFFER/RIGHTS OFFERING NOTIFICATION FORM Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to file this Form: Securities Act Rule 801 (Rights Offering) x Securities Act Rule 802 (Exchange Offer) ? Exchange Act Rule 13e-4(h)(8) (Issuer Tender Offer) ? Exchange Act Rule 14d

April 1, 2009 EX-99.1

RELEVANT INFORMATION

Exhibit 99.1 Gas Natural SDG S.A., (Gas Natural or the Company) in compliance with article 82 of Law 24/1998, of 28 July 1998, on the Securities Market, hereby informs the Spanish Securities Market Authorities (CNMV) of the following RELEVANT INFORMATION In accordance with the provisions of section 5.1.9 of the ?Nota de las Acciones? which forms an integral part of the Spanish Prospectus on Gas Na

March 16, 2009 CB

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form CB TENDER OFFER/RIGHTS OFFERING NOTIFICATION FORM

CB 1 dcb.htm FORM CB UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form CB TENDER OFFER/RIGHTS OFFERING NOTIFICATION FORM Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to file this Form: Securities Act Rule 801 (Rights Offering) x Securities Act Rule 802 (Exchange Offer) ¨ Exchange Act Rule 13e-4(h)(8) (Issuer Tender Offer) ¨

March 16, 2009 EX-99.2

Gas Natural SDG, S.A. Announcement of rights offer to its existing shareholders

Exhibit 99.2 Gas Natural SDG, S.A. Announcement of rights offer to its existing shareholders Gas Natural SDG, S.A., Barcelona, Spain, hereby notifies its shareholders as of the record date of March 13, 2009, (the ?Existing Shareholders?) that it is granting them preferential subscription rights (the ?Rights?) to subscribe for newly issued ordinary shares with a nominal value of ?1.00 each (the ?Sh

March 16, 2009 F-X

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-X APPOINTMENT OF AGENT FOR SERVICE OF PROCESS AND UNDERTAKING

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-X APPOINTMENT OF AGENT FOR SERVICE OF PROCESS AND UNDERTAKING A. Name of issuer or person filing (?Filer?): Gas Natural SDG, S.A. B. This is [check one] x an original filing for the Filer ? an amended filing for the Filer C. Identify the filing in conjunction with which this Form is being filed: Name of registrant: Gas

March 16, 2009 EX-99.1

GAS NATURAL SDG, S.A. 1-for-1 rights offering of 447,776,028 new ordinary shares at €7.82 per new ordinary share

EX-99.1 2 dex991.htm INTERNATIONAL OFFERING MEMORANDUM RELATING TO THE RIGHTS OFFERING, MARCH 12 2009 Table of Contents Exhibit 99.1 OFFERING MEMORANDUM CONFIDENTIAL GAS NATURAL SDG, S.A. 1-for-1 rights offering of 447,776,028 new ordinary shares at €7.82 per new ordinary share We are granting our shareholders preferential subscription rights to subscribe for an aggregate of 447,776,028 newly issu

October 20, 2008 EX-1

THE BANK OF NEW YORK MELLON AMERICAN DEPOSITARY RECEIPT FOR COMMON STOCK, PAR VALUE 1 EUR EACH, OF GAS NATURAL SDG SA (INCORPORATED UNDER THE LAWS OF SPAIN)

AMERICAN DEPOSITARY SHARES (One (1) American Depositary Share represents One-Fifth of One (1/5) Share) THE BANK OF NEW YORK MELLON AMERICAN DEPOSITARY RECEIPT FOR COMMON STOCK, PAR VALUE 1 EUR EACH, OF GAS NATURAL SDG SA (INCORPORATED UNDER THE LAWS OF SPAIN) The Bank of New York Mellon, as depositary (hereinafter called the ?Depositary?), hereby certifies (i) that there have been deposited with t

October 20, 2008 EX-4

EMMET, MARVIN & MARTIN, LLP COUNSELLORS AT LAW 120 Broadway New York, New York 10271 (212) 238-3000 (212) 653-1760 Fax: (212) 238-3100 Fax: (212) 653-1730

EXHIBIT 4 Writer?s Direct Dial EMMET, MARVIN & MARTIN, LLP COUNSELLORS AT LAW 120 Broadway New York, New York 10271 (212) 238-3000 (212) 653-1760 Fax: (212) 238-3100 Fax: (212) 653-1730 http://www.

October 20, 2008 F-6EF

As filed with the Securities and Exchange Commission on October 20, 2008 Registration No. 333- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 For Depositary Shares Evidenced by Ame

As filed with the Securities and Exchange Commission on October 20, 2008 Registration No.

May 15, 2007 15-15D

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15

15-15D 1 d1515d.htm FORM 15 UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934. Commission File Number: 333-132076 GAS NATURAL, SDG, S.A. (Exact name o

May 4, 2007 RW

THE BANK OF NEW YORK Depositary Receipts Division 101 Barclay Street New York, New York 10286

RW 1 withdrawalrequestbnygasnatur.htm REGISTRATION WITHDRAWL REQUEST THE BANK OF NEW YORK Depositary Receipts Division 101 Barclay Street New York, New York 10286 May 4, 2007 Securities and Exchange Commission 100 F. Street, N.E. Washington, DC 20549 Attention: Paul M. Dudek, Office of International Corporate Finance, Division of Corporation Finance Linda Chatman Thomsen, Division of Enforcement M

May 3, 2007 AW

[Letterhead of Gas Natural]

[Letterhead of Gas Natural] May 3, 2007 BY EDGAR Division of Corporation Finance Securities and Exchange Commission 100 F Street, N.

February 6, 2007 RW

[Letterhead of Gas Natural SDG, S.A.]

[Letterhead of Gas Natural SDG, S.A.] CONFIDENTIAL By Facsimile and EDGAR February 5, 2007 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Attention: Ms. Linda Chatman Thomsen, Division of Enforcement Mr. Michael Pressman, Division of Corporate Finance Re: Application to Withdraw Registration Statement on Form F-4 Gas Natural SDG, S.A. (?Gas Natural?) ? SEC File No. 33

February 2, 2007 SC TO-T/A

As filed with the Securities and Exchange Commission on February 1, 2007 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 16) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 END

As filed with the Securities and Exchange Commission on February 1, 2007 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

February 1, 2007 425

* * * This is a translation of a Spanish language relevant fact. In case of discrepancies, the Spanish version shall prevail. GAS NATURAL SDG, S.A.

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

February 1, 2007 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of February, 2007 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of February, 2007 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08003 Barcelona, Spain (Address of principal executive office

February 1, 2007 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of February, 2007 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of February, 2007 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office

February 1, 2007 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

January 24, 2007 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of January, 2007 Commission File Number: 333-132076 GAS NATURAL

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of January, 2007 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Plaza del Gas No. 1 08002, Barcelona, Spain (Address of principal executive office) Indicat

January 24, 2007 425

* * * This is a translation of a Spanish language communication. In case of discrepancies, the Spanish version will prevail. GAS NATURAL SDG, S.A. OTHER COMMUNICATIONS

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

January 12, 2007 425

* * * GAS NATURAL EXTENDS EXPIRATION DATE OF ITS U.S. OFFER FOR ENDESA

425 1 d425.htm FORM 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration s

January 12, 2007 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of January, 2007 Commission File Number: 333-132076 GAS NATURAL

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of January, 2007 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Plaza del Gas No. 1 08002, Barcelona, Spain (Address of principal executive office) Indicat

January 12, 2007 SC TO-T/A

As filed with the Securities and Exchange Commission on January 12, 2007 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 15) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 END

As filed with the Securities and Exchange Commission on January 12, 2007 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

December 14, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on December 14, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 14) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 EN

As filed with the Securities and Exchange Commission on December 14, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

December 14, 2006 425

* * * GAS NATURAL EXTENDS EXPIRATION DATE OF ITS U.S. OFFER FOR ENDESA

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

December 14, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of December, 2006 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of December, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Plaza del Gas No. 1 08002, Barcelona, Spain (Address of principal executive office) Indica

November 16, 2006 425

* * * GAS NATURAL EXTENDS EXPIRATION DATE OF ITS U.S. OFFER FOR ENDESA

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

November 16, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on November 16, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 13) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 EN

As filed with the Securities and Exchange Commission on November 16, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

November 16, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Plaza del Gas No. 1 08002, Barcelona, Spain (Address of principal executive office) Indica

November 13, 2006 425

* * * This presentation of the 3rd Quarter 2006 results was made in Spanish and simultaneously translated to the audience in English by an interpreter. This is a transcript of the simultaneous translation. As a result of such simultaneous translation

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

November 13, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office

November 8, 2006 425

* * * Comunications Management In case of discrepancies, the Spanish version will prevail.

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

November 8, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

November 8, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office

November 8, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office

November 7, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURA

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of November, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office

November 7, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

November 3, 2006 EX-3.1

GAS NATURAL SDG, S.A. ESTATUTOS SOCIALES (JUNIO 2006) ESTATUTOS DE GAS NATURAL SDG, S.A.

Exhibit 3.1 GAS NATURAL SDG, S.A. ESTATUTOS SOCIALES (JUNIO 2006) ESTATUTOS DE GAS NATURAL SDG, S.A. T?TULO PRIMERO DENOMINACI?N, OBJETO, DURACI?N Y DOMICILIO Art?culo 1.- DENOMINACI?N. La Sociedad se denomina GAS NATURAL SDG, S.A. Fue constituida el 28 de enero de 1843, ante los Notarios de Barcelona D. Jos? Manuel Planas y Compte y D. Jaime Burguerol "simul et insolidum protocolando", y se rige

November 3, 2006 POS AM

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 3, 2006

POS AM 1 dposam.htm POST-EFFECTIVE AMENDMENT NO 3 TO FORM F-4 Table of Contents AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON NOVEMBER 3, 2006 Registration No. 333-132076 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 3 to FORM F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GAS NATURAL SDG, S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED I

November 3, 2006 EX-99.8

CONSENT

EX-99.8 6 dex998.htm CONSENT OF AUDIHISPANA, S.A. Exhibit 99.8 CONSENT We hereby consent to (i) the use in the Registration Statement on Form F-4 of our report dated 2 February, 2006 relating to the Gas Natural share capital increase, and (ii) the references to us and to such report in such Registration Statement on Form F-4 in the form and in the context set forth therein. In giving such consent,

November 3, 2006 EX-3.2

GAS NATURAL SDG, S.A. ARTICLES OF ASSOCIATION

Exhibit 3.2 GAS NATURAL SDG, S.A. ARTICLES OF ASSOCIATION This publication has no legal value and it is a free translation of the Estatutos Sociales of the company originally issued in Spanish and registered at Registre Mercantil de Barcelona. If you find any discrepancy between the English and the Spanish version of this document, please note that the Spanish version will prevail. ARTICLES OF ASS

October 27, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of October, 2006 Commission File Number: 333-132076 GAS NATURAL

6-K 1 d6k.htm FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of October, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of prin

October 27, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

October 17, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on October 17, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 12) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 END

SC TO-T/A 1 dsctota.htm AMENDMENT NO. 12 TO SCHEDULE TO As filed with the Securities and Exchange Commission on October 17, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 12) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA, S.A. (Name of Subject Company (issuer)) GAS NATURAL SDG, S.A. (Name of Filing Person (off

October 17, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of October, 2006 Commission File Number: 333-132076 GAS NATURAL

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of October, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office)

October 17, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

September 15, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of September, 2006 Commission File Number: 333-132076 GAS NATUR

6-K 1 d6k.htm FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of September, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of pr

September 15, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

September 15, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on September 15, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 11) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 E

As filed with the Securities and Exchange Commission on September 15, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

September 8, 2006 425

* * * Communications Management In case of discrepancies, the Spanish version will prevail. GAS NATURAL SELLS 10% OF THE DISTRIBUTOR GASNALSA TO NATURGAS ENERGÍA

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

September 8, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of September, 2006 Commission File Number: 333-132076 GAS NATUR

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of September, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive offic

August 17, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of August, 2006 Commission File Number: 333-132076 GAS NATURAL

6-K 1 d6k.htm FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of August, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princ

August 17, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

August 17, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on August 17, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 10) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDE

SC TO-T/A 1 dsctota.htm AMENDMENT NO 10 TO SCHEDULE TO As filed with the Securities and Exchange Commission on August 17, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 10) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA, S.A. (Name of Subject Company (issuer)) GAS NATURAL SDG, S.A. (Name of Filing Person (offer

August 8, 2006 425

* * * Comunications Management In case of discrepancies, the Spanish version will prevail. GAS NATURAL REDUCES ITS STAKE IN ENAGAS TO 5%, AHEAD OF THE TERM ESTABLISHED BY CURRENT LAW

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

August 8, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of August, 2006 Commission File Number: 333-132076 GAS NATURAL

6-K 1 d6k.htm FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of August, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princ

July 31, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

6-K 1 d6k.htm 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal ex

July 31, 2006 425

* * * GAS NATURAL – first half results 2006 Transcription of interpreters’ voices during the presentation in Spanish

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

July 26, 2006 425

* * * Comunications Management In case of discrepancies, the Spanish version will prevail.

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

July 26, 2006 425

* * * GAS NATURAL Second Quarter results 2006 GAS NATURAL Second quarter 2006 results NET PROFIT AMOUNTED TO €455.8 MILLION IN 1H06, A 23.9% INCREASE

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

July 26, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

July 26, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

6-K 1 d6k.htm FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princip

July 26, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

July 26, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

July 24, 2006 EX-10.1

CONTENTS Clause Page 1. Interpretation 1 2. Facilities 15 3. Purpose 16 4. Conditions Precedent 16 5. Utilisation - Loans 17 6. Utilisation - Avales 18 7. Repayment and Cash Collateralisation 24 8. Prepayment and Cancellation 24 9. Interest 28 10. Te

Exhibit 10.1 Allen & Overy LLP CONFORMED COPY AGREEMENT in relation to CREDIT FACILITIES for GAS NATURAL SDG, S.A. arranged by CAIXA D?ESTALVIS I PENSIONS DE BARCELONA SOCI?T? G?N?RALE, S.A. UBS LIMITED as mandated lead arrangers and bookrunners with CAIXA D?ESTALVIS I PENSIONS DE BARCELONA as Facility Agent 5 September 2005 CONTENTS Clause Page 1. Interpretation 1 2. Facilities 15 3. Purpose 16 4

July 24, 2006 EX-3.1

GAS NATURAL SDG, S.A. ESTATUTOS SOCIALES ESTATUTOS DE GAS NATURAL SDG, S.A.

Exhibit 3.1 GAS NATURAL SDG, S.A. ESTATUTOS SOCIALES ESTATUTOS DE GAS NATURAL SDG, S.A. T?TULO PRIMERO DENOMINACI?N, OBJETO, DURACI?N Y DOMICILIO Art?culo 1.- DENOMINACI?N. La Sociedad se denomina GAS NATURAL SDG, S.A. Fue constituida el 28 de enero de 1843, ante los Notarios de Barcelona D. Jos? Manuel Planas y Compte y D. Jaime Burguerol ?simul et insolidum protocolando?, y se rige por los prese

July 24, 2006 EX-3.2

GAS NATURAL SDG, S.A. Spanish>English Translation Created by Juriscribe® BYLAWS OF GAS NATURAL SDG, S.A.

Exhibit 3.2 Spanish>English Translation Created by Juriscribe? GAS NATURAL SDG, S.A. BYLAWS Spanish>English Translation Created by Juriscribe? BYLAWS OF GAS NATURAL SDG, S.A. TITLE ONE NAME, PURPOSE, DURATION AND REGISTERED OFFICE Article 1.- NAME. The Company is called GAS NATURAL SDG, S.A. It was incorporated on January 28, 1843 before the Notary Publics of Barcelona, Mr. Jos? Manuel Planas y Co

July 24, 2006 F-4 POS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 24, 2006

F-4 POS 1 df4pos.htm POST EFFECTIVE AMENDMENT NO 2 TO FORM F-4 Table of Contents AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 24, 2006 Registration No. 333-132076 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 2 to FORM F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GAS NATURAL SDG, S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED IN

July 24, 2006 EX-99.8

CONSENT

EX-99.8 7 dex998.htm CONSENT OF AUDIHISPANA, S.A. Exhibit 99.8 CONSENT We hereby consent to (i) the use in the Registration Statement on Form F-4 of our report dated 2 February, 2006 relating to the Gas Natural share capital increase, and (ii) the references to us and to such report in such Registration Statement on Form F-4 in the form and in the context set forth therein. In giving such consent,

July 19, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on July 18, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 9) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA,

As filed with the Securities and Exchange Commission on July 18, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

July 18, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

July 18, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

July 17, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

July 17, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

July 3, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

July 3, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of July, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

June 28, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

June 28, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

6-K 1 d6k.htm FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princip

June 19, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on June 16, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 8) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA,

As filed with the Securities and Exchange Commission on June 16, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

June 19, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

June 19, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

June 9, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

June 9, 2006 425

* * *

425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4

June 8, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

June 8, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

June 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

June 8, 2006 6-K

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 6-K Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) In

June 8, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

June 8, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

June 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princip

June 2, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SD

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of June, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princip

June 2, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 30, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 30, 2006 6-K/A

AMENDMENT NO. 1 FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076

AMENDMENT NO. 1 TO FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal ex

May 18, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on May 18, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 7) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA,

SC TO-T/A 1 dsctota.htm AMENDMENT NO 7 TO SCHEDULE TO As filed with the Securities and Exchange Commission on May 18, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 7) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA, S.A. (Name of Subject Company (issuer)) GAS NATURAL SDG, S.A. (Name of Filing Person (offeror))

May 18, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

Form 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive of

May 18, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

May 16, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 16, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 11, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principa

May 11, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 10, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

May 10, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

May 10, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 10, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 9, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 9, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 9, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

Form 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive of

May 9, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

Form 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive of

May 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principa

May 8, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 8, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

May 8, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

May 5, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 5, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of May, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) Ind

May 5, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

May 5, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

April 21, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

April 21, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

April 20, 2006 425

* * *

425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4

April 20, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

April 19, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on April 18, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 6) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA

SC TO-T/A 1 dsctota.htm AMENDMENT NO 6 TO SCHEDULE TO As filed with the Securities and Exchange Commission on April 18, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 6) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA, S.A. (Name of Subject Company (issuer)) GAS NATURAL SDG, S.A. (Name of Filing Person (offeror)

April 19, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

April 19, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

April 10, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

April 10, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

April 10, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

April 10, 2006 425

* * *

425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4

April 10, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

April 10, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

April 7, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

April 7, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

April 7, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

April 7, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

April 7, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of April, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

April 7, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

April 5, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on April 5, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 5) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA,

As filed with the Securities and Exchange Commission on April 5, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

April 3, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

April 3, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

March 31, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on March 31, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 4) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA

As filed with the Securities and Exchange Commission on March 31, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 31, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

March 31, 2006 EX-99.9

Bolsa de Barcelona

Exhibit 99.9 Bolsa de Barcelona CONSENT a) We hereby consent to (i) the use in this Registration Statement on Form F-4 of our certificate dated February 7, 2006 (the ?Certificate?) relating to the Gas Natural SDG, S.A. share capital increase to be executed in relation to the Tender Offer launched by Gas Natural SDG, S.A. over Endesa, S.A., issued for the exclusive effects and as required by the Ba

March 31, 2006 F-4 POS

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 31, 2006

Post-Effective Amendment No. 1 to Form F-4 Table of Contents AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 31, 2006 Registration No. 333-132076 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Post-Effective Amendment No. 1 to FORM F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GAS NATURAL SDG, S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Kingdo

March 31, 2006 EX-99.10

CONSENT

Exhibit 99.10 CONSENT We hereby consent to (i) the use in the Registration Statement on Form F-4 of our report dated 2 February, 2006 relating to the Gas Natural share capital increase, and (ii) the references to us and to such report in such Registration Statement on Form F-4 in the form and in the context set forth therein. In giving such consent, we do not admit that we come within the category

March 31, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

Form 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive

March 28, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on March 28, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 3) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA

Amendment No. 3 to Schedule TO As filed with the Securities and Exchange Commission on March 28, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 3) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA, S.A. (Name of Subject Company (issuer)) GAS NATURAL SDG, S.A. (Name of Filing Person (offeror)) Ordinary Shares, nomi

March 23, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on March 22, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 2) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA

As filed with the Securities and Exchange Commission on March 22, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 22, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 21, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

March 21, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

March 21, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

March 15, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

March 15, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

March 10, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

March 10, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 9, 2006 6-K/A

FORM 6-K/A Amendment No. 2 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-13

FORM 6-K/A Amendment No. 2 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal e

March 9, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 9, 2006 6-K/A

FORM 6-K/A Amendment No. 1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-13

FORM 6-K/A Amendment No. 1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of principal e

March 9, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

March 9, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 8, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

March 8, 2006 SC TO-T/A

As filed with the Securities and Exchange Commission on March 8, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO (Amendment No. 1) Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA,

As filed with the Securities and Exchange Commission on March 8, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 8, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant?s Name into English) Av. Portal de L?Angel, 20-22 08002 Barcelona, Spain (Address of principal executive office) I

March 8, 2006 6-K

FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL S

6-K 1 d6k.htm FORM 6-K FORM 6-K SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Report of Foreign Private Issuer Pursuant to Rule 13a-16 or 15d-16 of the Securities Exchange Act of 1934 For the month of March, 2006 Commission File Number: 333-132076 GAS NATURAL SDG, S.A. (Translation of Registrant’s Name into English) Av. Portal de L’Angel, 20-22 08002 Barcelona, Spain (Address of princi

March 6, 2006 F-6

As filed with the Securities and Exchange Commission on March 6, 2006. Registration No. 333- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT THE SECURITIES ACT OF 1933 For Depositary Shares Evidenced by Ameri

F-6 1 gasf6.htm FORM F-6 As filed with the Securities and Exchange Commission on March 6, 2006. Registration No. 333- SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM F-6 REGISTRATION STATEMENT under THE SECURITIES ACT OF 1933 For Depositary Shares Evidenced by American Depositary Receipts GAS NATURAL SDG, S.A. (Exact name of issuer of deposited securities as specified in its charter

March 6, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 6, 2006 EX-99.9

Bolsa de Barcelona

EX-99.9 6 dex999.htm CONSENT OF SOCIEDAD RECTORA DE BOLSA DE VALORES DE BARCELONA, S.A. Exhibit 99.9 Bolsa de Barcelona CONSENT a) We hereby consent to (i) the use in this Registration Statement on Form F-4 of our certificate dated February 7, 2006 (the “Certificate”) relating to the Gas Natural SDG, S.A. share capital increase to be executed in relation to the Tender Offer launched by Gas Natural

March 6, 2006 EX-99.10

CONSENT

EX-99.10 7 dex9910.htm CONSENT OF AUDIHISPANA, S.A. Exhibit 99.10 CONSENT We hereby consent to (i) the use in the Registration Statement on Form F-4 of our report dated 2 February, 2006 relating to the Gas Natural share capital increase, and (ii) the references to us and to such report in such Registration Statement on Form F-4 in the form and in the context set forth therein. In giving such conse

March 6, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 005-80961 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 6, 2006 SC TO-T

As filed with the Securities and Exchange Commission on March 6, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 SCHEDULE TO Tender Offer Statement under Section 14(d)(1) of the Securities Exchange Act of 1934 ENDESA, S.A. (Name of Sub

Schedule TO As filed with the Securities and Exchange Commission on March 6, 2006 SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.

March 6, 2006 EX-10.1

CONTENTS Clause Page 1. Interpretation 1 2. Facilities 15 3. Purpose 16 4. Conditions Precedent 16 5. Utilisation - Loans 17 6. Utilisation - Avales 18 7. Repayment and Cash Collateralisation 24 8. Prepayment and Cancellation 24 9. Interest 28 10. Te

EX-10.1 4 dex101.htm CREDIT FACILITY AGREEMENT Exhibit 10.1 Allen & Overy LLP CONFORMED COPY AGREEMENT in relation to CREDIT FACILITIES for GAS NATURAL SDG, S.A. arranged by CAIXA D’ESTALVIS I PENSIONS DE BARCELONA SOCIÉTÉ GÉNÉRALE, S.A. UBS LIMITED as mandated lead arrangers and bookrunners with CAIXA D’ESTALVIS I PENSIONS DE BARCELONA as Facility Agent 5 September 2005 CONTENTS Clause Page 1. In

March 6, 2006 EX-4

EMMET, MARVIN & MARTIN, LLP

EMMET, MARVIN & MARTIN, LLP EMMET, MARVIN & MARTIN, LLP COUNSELLORS AT LAW 120 Broadway New York, New York 10271 212-238-3000 www.

March 6, 2006 F-4/A

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 6, 2006

F-4/A 1 df4a.htm AMENDMENT NO. 1 TO FORM F-4 Table of Contents AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 6, 2006 Registration No. 333-132076 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Amendment No. 1 to FORM F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GAS NATURAL SDG, S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Kingdom of Spain 493

March 6, 2006 EX-4.1

GAS NATURAL SDG, S.A. THE BANK OF NEW YORK As Depositary OWNERS AND HOLDERS OF AMERICAN DEPOSITARY SHARES Deposit Agreement Dated as of , 2006 TABLE OF CONTENTS Page ARTICLE 1. DEFINITIONS 1 SECTION 1.01. American Depositary Shares 1 SECTION 1.02. Co

EX-4.1 2 dex41.htm FORM OF DEPOSIT AGREEMENT Exhibit 4.1 GAS NATURAL SDG, S.A. and THE BANK OF NEW YORK As Depositary and OWNERS AND HOLDERS OF AMERICAN DEPOSITARY SHARES Deposit Agreement Dated as of , 2006 TABLE OF CONTENTS Page ARTICLE 1. DEFINITIONS 1 SECTION 1.01. American Depositary Shares 1 SECTION 1.02. Commission 2 SECTION 1.03. Company 2 SECTION 1.04. Custodian 2 SECTION 1.05. Deliver; S

March 6, 2006 EX-1

GAS NATURAL SDG, S.A. THE BANK OF NEW YORK

[EM&M Draft 3/2/2006] GAS NATURAL SDG, S.A. and THE BANK OF NEW YORK As Depositary and OWNERS AND HOLDERS OF AMERICAN DEPOSITARY SHARES Deposit Agreement Dated as of , 2006 EMM-8139194 TABLE OF CONTENTS Page SECTION 1.01. American Depositary Shares. SECTION 1.02. Commission. SECTION 1.03. Company. SECTION 1.04. Custodian. SECTION 1.05. Deliver; Surrender. SECTION 1.06. Deposit Agreement. SECTION 1

March 2, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

March 2, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 2, 2006 425

* * *

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statem

March 1, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

March 1, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 In connection with the offer by Gas Natural SDG, S.A. (Gas Natural) to acquire 100% of the share capital of Endesa, S.A. (Endesa), Gas Natural has filed with the United States Securities and Exchange Commission (SEC) a registration statement on Form F-4 (Fi

February 28, 2006 EX-10.1

CONTENTS Clause Page 1. Interpretation 1 2. Facilities 15 3. Purpose 16 4. Conditions Precedent 16 5. Utilisation - Loans 17 6. Utilisation - Avales 18 7. Repayment and Cash Collateralisation 24 8. Prepayment and Cancellation 24 9. Interest 28 10. Te

EX-10.1 14 dex101.htm CREDIT FACILITY AGREEMENT DATED SEPTEMBER 5, 2005 Exhibit 10.1 Allen & Overy LLP CONFORMED COPY AGREEMENT in relation to CREDIT FACILITIES for GAS NATURAL SDG, S.A. arranged by CAIXA D’ESTALVIS I PENSIONS DE BARCELONA SOCIÉTÉ GÉNÉRALE, S.A. UBS LIMITED as mandated lead arrangers and bookrunners with CAIXA D’ESTALVIS I PENSIONS DE BARCELONA as Facility Agent 5 September 2005 C

February 28, 2006 EX-99.3

U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal value €1.20 per share, including Ordinary Shares Represented by American Depositary Shares ENDESA, S.A. (CUSIP: 29258N 107; ISIN: US29258N1972) Pursuant to the Prospectus, dated ·, 2006 GAS NATURAL

Exhibit 99.3 U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal value ?1.20 per share, including Ordinary Shares Represented by American Depositary Shares of ENDESA, S.A. (CUSIP: 29258N 107; ISIN: US29258N1972) Pursuant to the Prospectus, dated ?, 2006 by GAS NATURAL SDG, S.A. THE U.S. OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 11:00 A.M. NEW YORK CITY TIME (5:00 P.M. MADRID, SPAIN TIME), ON ?, 2

February 28, 2006 EX-9.8

Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails SECOND ADDENDUM TO THE REPLACEMENT AGREEMENT BETWEEN REPSOL YPF S.A. AND “LA CAIXA” DATED JANUARY 11, 2000

Exhibit 9.8 Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails SECOND ADDENDUM TO THE REPLACEMENT AGREEMENT BETWEEN REPSOL YPF S.A. AND ?LA CAIXA? DATED JANUARY 11, 2000 This second addendum is made by and between Antonio Brufau Niub?, in representation and on behalf of Caixa d?Estalvis i Pensions de Barcelona,

February 28, 2006 EX-9.6

Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails NOVATION OF THE AGREEMENT OF JANUARY, 2000 BETWEEN REPSOL YPF AND “LA CAIXA”

Exhibit 9.6 Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails NOVATION OF THE AGREEMENT OF JANUARY, 2000 BETWEEN REPSOL YPF AND ?LA CAIXA? In Madrid, on May sixteenth, two thousand and two. BETWEEN AS PARTY OF THE FIRST PART, RAM?N BLANCO BAL?N, in the name and on behalf REPSOL YPF, S.A. AS PARTY OF THE SECOND

February 28, 2006 EX-10.6

WHOLESALE BASE PROSPECTUS GAS NATURAL FINANCE B.V. (Incorporated with limited liability in The Netherlands and having its statutory domicile in Amsterdam) GAS NATURAL CAPITAL MARKETS, S.A. (Incorporated with limited liability in the Kingdom of Spain)

Exhibit 10.6 WHOLESALE BASE PROSPECTUS GAS NATURAL FINANCE B.V. (Incorporated with limited liability in The Netherlands and having its statutory domicile in Amsterdam) and GAS NATURAL CAPITAL MARKETS, S.A. (Incorporated with limited liability in the Kingdom of Spain) Guaranteed by D16 GAS NATURAL SDG, S.A. (Incorporated with limited liability in the Kingdom of Spain) euro 2,000,000,000 Euro D12 Me

February 28, 2006 EX-10.2

ACUERDO ENTRE IBERDROLA Y GAS NATURAL

Exhibit 10.2 [LOGO] [LOGO] ACUERDO ENTRE IBERDROLA Y GAS NATURAL 5 de septiembre de 2005 1 [LOGO] [LOGO] En Madrid y Barcelona, a 5 de septiembre de 2005 REUNIDOS: De una parte, IBERDROLA, S.A., con domicilio en Bilbao, Cardenal Gardoqui, 8, (en lo sucesivo ?IBERDROLA?), representada por D. Jos? Ignacio S?nchez-Gal?n actuando como Vicepresidente y Consejero Delegado y de otra, GAS NATURAL SDG, S.A

February 28, 2006 EX-21.1

LIST OF SIGNIFICANT SUBSIDIARIES SUBSIDIARY NAME COUNTRY % OF CAPITAL STOCK % OF VOTING RIGHTS Gas Natural CEGAS, S.A. Spain 99.7 99.7 Gas Natural Andalucía, S.A. Spain 100.0 100.0 Gas Natural Castilla-La Mancha, S.A. Spain 95.0 95.0 Gas Galicia SDG,

Exhibit 21.1 LIST OF SIGNIFICANT SUBSIDIARIES SUBSIDIARY NAME COUNTRY % OF CAPITAL STOCK % OF VOTING RIGHTS Gas Natural CEGAS, S.A. Spain 99.7 99.7 Gas Natural Andaluc?a, S.A. Spain 100.0 100.0 Gas Natural Castilla-La Mancha, S.A. Spain 95.0 95.0 Gas Galicia SDG, S.A. Spain 62.0 62.0 Gas Natural Castilla y Le?n, S.A. Spain 90.1 90.1 Gas Natural La Coru?a, S.A. Spain 56.4 91 Gas Navarra, S.A. Spain

February 28, 2006 EX-3.2

GAS NATURAL SDG, S.A. Spanish>English Translation Created by Juriscribe® BYLAWS OF GAS NATURAL SDG, S.A.

Exhibit 3.2 Spanish>English Translation Created by Juriscribe? GAS NATURAL SDG, S.A. BYLAWS Spanish>English Translation Created by Juriscribe? BYLAWS OF GAS NATURAL SDG, S.A. TITLE ONE NAME, PURPOSE, DURATION AND REGISTERED OFFICE Article 1.- NAME. The Company is called GAS NATURAL SDG, S.A. It was incorporated on January 28, 1843 before the Notary Publics of Barcelona, Mr. Jos? Manuel Planas y Co

February 28, 2006 EX-9.4

ADDENDUM SEGUNDO A LA NOVACIÓN DEL ACUERDO ENTRE REPSOL YPF, S.A. Y “LA CAIXA” DE ONCE DE ENERO DE 2000

Exhibit 9.4 ADDENDUM SEGUNDO A LA NOVACI?N DEL ACUERDO ENTRE REPSOL YPF, S.A. Y ?LA CAIXA? DE ONCE DE ENERO DE 2000 De una parte, don Antonio Brufau Niub?, en nombre y representaci?n de Caixa d?Estalvis i Pensions de Barcelona, en adelante ?la Caixa? Y de otra, don Ram?n Blanco Bal?n, en nombre y representaci?n de Repsol YPF, S.A. Reconoci?ndose ambas partes capacidad legal suficiente para suscrib

February 28, 2006 EX-99.1

THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION.

Exhibit 99.1 THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. If you are in any doubt about what action to take, we recommend that you immediately seek your own personal financial advice from an appropriately authorized independent professional advisor. This document should be read in conjunction with the prospectus dated ?, 2006, which, together with any amendments or supplements

February 28, 2006 EX-99.7

[Letterhead] Bolsa de Barcelona [Barcelona Stock Exchange]

Exhibit 99.7 Translation [Letterhead] Bolsa de Barcelona [Barcelona Stock Exchange] Jos? Ma. Ant?nez Xaus, on behalf of the Governing Body (Sociedad Rectora) of the Bolsa de Valores de Barcelona, S.A.U., which has been designated by the Commercial Registry of Barcelona as an ?independent expert? in File A 2732/05 of said Commercial Registry, in compliance with Article 133.3 of the Regulations of t

February 28, 2006 EX-99.10

CONSENT

EX-99.10 31 dex9910.htm CONSENT OF AUDIHISPANA, S.A. Exhibit 99.10 CONSENT We hereby consent to (i) the use in the Registration Statement on Form F-4 of our report dated 2 February, 2006 relating to the Gas Natural share capital increase, and (ii) the references to us and to such report in such Registration Statement on Form F-4 in the form and in the context set forth therein. In giving such cons

February 28, 2006 EX-99.4

THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION.

Exhibit 99.4 THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION. If you are in any doubt about what action to take, we recommend that you immediately seek your own personal financial advice from an appropriately authorized independent professional advisor. This document should be read in conjunction with the prospectus dated ?, 2006, which, together with any amendments or supplements

February 28, 2006 EX-99.8

This is a translation of a report originally issued in Spanish. In case of discrepancies, the Spanish language version will prevail. GAS NATURAL SDG, S.A. Report on the Exclusion of Preferential Subscription Rights

Exhibit 99.8 This is a translation of a report originally issued in Spanish. In case of discrepancies, the Spanish language version will prevail. GAS NATURAL SDG, S.A. Report on the Exclusion of Preferential Subscription Rights [Letterhead] RSM Audihispana Auditores REPORT ON THE EXCLUSION OF PREFERENTIAL SUBSCRIPTION RIGHTS IN THE SITUATION REFLECTED IN ARTICLE 159 OF THE REVISED [SPANISH] LAW OF

February 28, 2006 EX-99.9

Bolsa de Barcelona

Exhibit 99.9 Bolsa de Barcelona CONSENT a) We hereby consent to (i) the use in this Registration Statement on Form F-4 of our certificate dated February 7, 2006 (the ?Certificate?) relating to the Gas Natural SDG, S.A. share capital increase to be executed in relation to the Tender Offer launched by Gas Natural SDG, S.A. over Endesa, S.A., issued for the exclusive effects and as required by the Ba

February 28, 2006 EX-10.5

2

Exhibit 10.5 [Logo] [Logo] REPSOL YPF GAS NATURAL In Barcelona, April 29, 2005 WERE GATHERED: On the one part, REPSOL YPF, S.A., domiciled in Madrid, Paseo de la Castellana, 278, 28046, Madrid (hereinafter ?Repsol YPF?), represented by Antonio Brufau Niub?, as Executive President, And on the other, GAS NATURAL SDG, S.A., domiciled at Avenida Portal del Angel 22, 08002, Barcelona (hereinafter ?Gas

February 28, 2006 EX-9.5

Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails AGREEMENT OF JANUARY 11, 2000 BETWEEN REPSOL YPF AND “LA CAIXA”

Exhibit 9.5 Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails AGREEMENT OF JANUARY 11, 2000 BETWEEN REPSOL YPF AND ?LA CAIXA? ANTECEDENTS 1. In the year 1990, Instituto Nacional de Hidrocarburos and Repsol, S.A., as party of the first part, as participants in various companies in the domestic and commercial gas

February 28, 2006 EX-99.5

GAS NATURAL SDG, S.A. U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal share value €1.20 per share (including Ordinary Shares Represented by American Depositary Shares) held by U.S. holders ENDESA, S.A. (ISIN: ES0130670112) Pursuant to the Prospec

Exhibit 99.5 GAS NATURAL SDG, S.A. U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal share value ?1.20 per share (including Ordinary Shares Represented by American Depositary Shares) held by U.S. holders of ENDESA, S.A. (ISIN: ES0130670112) Pursuant to the Prospectus, dated ?, 2006 NOTICE TO FINANCIAL INTERMEDIARIES AND CUSTODIANS WITH RESPECT TO THE U.S. OFFER ENDESA AMERICAN DEPOSITARY SHARES

February 28, 2006 425

In case of any discrepancies, the Spanish version will prevail. CHANGE IN THE DATE OF PUBLICATION OF 2005 RESULTS

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 28, 2006 EX-9.2

NOVACIÓN DEL ACUERDO ENTRE REPSOL YPF Y “LA CAIXA” DE 11 DE ENERO DE 2000

Exhibit 9.2 NOVACI?N DEL ACUERDO ENTRE REPSOL YPF Y ?LA CAIXA? DE 11 DE ENERO DE 2000 En Madrid, a diecis?is de Mayo de dos mil dos, REUNIDOS DE UNA PARTE, D. RAM?N BLANCO BAL?N, en nombre y representaci?n de REPSOL YPF, S.A. DE OTRA PARTE, D. ANTONIO BRUFAU NIUB?, en nombre y representaci?n de LA CAIXA DE PENSIONS I ESTALVIS DE BARCELONA (?LA CAIXA?). Reconoci?ndose ambas partes, en el concepto e

February 28, 2006 EX-99.6

U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal value €1.20 per share, including Ordinary Shares Represented by American Depositary Shares ENDESA, S.A. Pursuant to the Prospectus, dated ·, 2006 GAS NATURAL SDG, S.A. THE U.S. OFFER AND WITHDRAWAL

Exhibit 99.6 U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal value ?1.20 per share, including Ordinary Shares Represented by American Depositary Shares of ENDESA, S.A. Pursuant to the Prospectus, dated ?, 2006 by GAS NATURAL SDG, S.A. THE U.S. OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 11:00 A.M. NEW YORK CITY TIME (5:00 P.M. MADRID, SPAIN TIME), ON ?, 2006, UNLESS THE U.S. OFFER IS EXTENDED.

February 28, 2006 EX-4.1

GAS NATURAL SDG, S.A. THE BANK OF NEW YORK As Depositary OWNERS AND HOLDERS OF AMERICAN DEPOSITARY SHARES Deposit Agreement Dated as of , 2006 TABLE OF CONTENTS Page ARTICLE 1. DEFINITIONS 1 SECTION 1.01. American Depositary Shares 1 SECTION 1.02. Co

Exhibit 4.1 GAS NATURAL SDG, S.A. and THE BANK OF NEW YORK As Depositary and OWNERS AND HOLDERS OF AMERICAN DEPOSITARY SHARES Deposit Agreement Dated as of , 2006 TABLE OF CONTENTS Page ARTICLE 1. DEFINITIONS 1 SECTION 1.01. American Depositary Shares 1 SECTION 1.02. Commission 2 SECTION 1.03. Company 2 SECTION 1.04. Custodian 2 SECTION 1.05. Deliver; Surrender 2 SECTION 1.06. Deposit Agreement 3

February 28, 2006 F-4

AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 28, 2006

F-4 1 df4.htm FORM F-4 Table of Contents AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON FEBRUARY 28, 2006 Registration No. 333- SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM F-4 REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 GAS NATURAL SDG, S.A. (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER) Kingdom of Spain 4932 Not Applicable (State or other jurisdicti

February 28, 2006 EX-9.7

Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails. ADDENDUM TO NOVATION OF THE AGREEMENT BETWEEN REPSOL YPF AND THE FUND OF JANUARY 11, 2000

Exhibit 9.7 Unofficial English translation of agreements originally drawn up in Spanish. In case of discrepancy the Spanish language version prevails. ADDENDUM TO NOVATION OF THE AGREEMENT BETWEEN REPSOL YPF AND THE FUND OF JANUARY 11, 2000 In Barcelona, December sixteen of two thousand two. THERE MET Party of the first part, Don ANTONIO BRUFAU NIUB?, in the name and representation of LA CAIXA DE

February 28, 2006 EX-9.3

ADDENDUM A LA NOVACIÓN DEL ACUERDO ENTRE REPSOL YPF Y LA CAIXA DE 11 DE ENERO DE 2000

Exhibit 9.3 ADDENDUM A LA NOVACI?N DEL ACUERDO ENTRE REPSOL YPF Y LA CAIXA DE 11 DE ENERO DE 2000 En Barcelona, a 16 de diciembre de dos mil dos. REUNIDOS De una parte, D. ANTONIO BRUFAU NIUB?, en nombre y representaci?n de LA CAIXA DE PENSIONS I ESTALVIS DE BARCELONA (LA CAIXA). De otra, D. RAM?N BLANCO BAL?N, en nombre y representaci?n de REPSOL YPF, S.A. Reconoci?ndose ambas partes capacidad le

February 28, 2006 EX-9.1

ACUERDO ENTRE REPSOL YPF Y “LA CAIXA” DE 11 ENERO DE 2000

Exhibit 9.1 ACUERDO ENTRE REPSOL YPF Y ?LA CAIXA? DE 11 ENERO DE 2000 ANTECEDENTES 1?.- En el a?o 1990 el Instituto Nacional de Hidrocarburos y Repsol, S.A., por una parte, como part?cipes en diversas sociedades del sector gasista dom?stico y comercial, entre ellas Catalana de Gas, S.A. y Gas Madrid, S.A., y, por otra, la Caja de Ahorros y Pensiones de Barcelona (?la Caixa?), como primera accionis

February 28, 2006 EX-10.3

AGREEMENT BETWEEN IBERDROLA AND GAS NATURAL September 5, 2005 *

Exhibit 10.3 6K6922552 07/2005 AGREEMENT BETWEEN IBERDROLA AND GAS NATURAL September 5, 2005 * * Translator?s Note: Each odd-numbered page of this document contains a tax stamp in the amount of ?0.15 and an illegible circular stamp at the top of the page. Every page of this document also contains the logos of Iberdrola and Gas Natural, an illegible circular stamp and a scrawl in the left margin, a

February 28, 2006 EX-10.4

2

Exhibit 10.4 En Barcelona, a 29 de Abril de 2005 REUNIDOS: De una parte, REPSOL YPF, S.A., con domicilio en Madrid, Paseo de la Castellana, 278, 28046, Madrid (en lo sucesivo ?Repsol YPF?), representada por D. Antonio Brufau Niub? actuando como Presidente Ejecutivo y de otra, GAS NATURAL SDG, S.A., con domicilio en Avenida Portal del ?ngel 22, 08002, Barcelona (en lo sucesivo ?Gas Natural?), repre

February 28, 2006 EX-3.1

GAS NATURAL SDG, S.A. ESTATUTOS SOCIALES ESTATUTOS DE GAS NATURAL SDG, S.A.

Exhibit 3.1 GAS NATURAL SDG, S.A. ESTATUTOS SOCIALES ESTATUTOS DE GAS NATURAL SDG, S.A. T?TULO PRIMERO DENOMINACI?N, OBJETO, DURACI?N Y DOMICILIO Art?culo 1.- DENOMINACI?N. La Sociedad se denomina GAS NATURAL SDG, S.A. Fue constituida el 28 de enero de 1843, ante los Notarios de Barcelona D. Jos? Manuel Planas y Compte y D. Jaime Burguerol ?simul et insolidum protocolando?, y se rige por los prese

February 28, 2006 EX-99.2

U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal value €1.20 per share including Ordinary Shares Represented by American Depositary Shares ENDESA, S.A. (CUSIP: 29258N 107; ISIN: US29258N1972) Pursuant to the Prospectus, dated ·, 2006 GAS NATURAL S

Exhibit 99.2 U.S. OFFER TO EXCHANGE All Ordinary Shares, nominal value ?1.20 per share including Ordinary Shares Represented by American Depositary Shares of ENDESA, S.A. (CUSIP: 29258N 107; ISIN: US29258N1972) Pursuant to the Prospectus, dated ?, 2006 by GAS NATURAL SDG, S.A. THE U.S. OFFER AND WITHDRAWAL RIGHTS WILL EXPIRE AT 11:00 A.M. NEW YORK CITY TIME (5:00 P.M. MADRID, SPAIN TIME), ON ?, 20

February 22, 2006 425

This is a translation of a Spanish language interview. In case of discrepancies, the Spanish version will prevail. Cinco Dias Spanish Newspaper Interview to Gas Natural’s Chief Executive Officer, Rafael Villaseca, dated February 20, 2006

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 21, 2006 425

In case of discrepancies, the Spanish version will prevail. GAS NATURAL CONTINUES TO GO FORWARD WITH ITS OFFER FOR ENDESA

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 21, 2006 425

This is a translation of a Spanish language interview. In case of discrepancies, the Spanish version will prevail. Abc Spanish Newspaper Interview to Gas Natural’s Chief Executive Officer, Rafael Villaseca, dated February 20, 2006.

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 17, 2006 425

This is a translation of a Spanish communication In case of any discrepancies, the Spanish version will prevail. Presentation of 2005 Results Monday, February 27, 2006

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 16, 2006 425

In case of discrepancies, the Spanish version will prevail. THE GAS NATURAL GROUP PUTS INTO OPERATION THE LARGEST COMBINED CYCLE PLANT IN SPAIN, OF 1,200 MW

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 7, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 7, 2006 425

This is a translation of a Spanish language relevant fact. In case of discrepancies, the Spanish version will prevail. GAS NATURAL SDG, S.A.

425 1 d425.htm 425 Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following a

February 6, 2006 425

In case of discrepancies, the Spanish version will prevail. GAS NATURAL SDG, S.A.

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 6, 2006 425

In case of discrepancies, the Spanish version will prevail. GAS NATURAL’S BOARD OF DIRECTORS WILL STUDY WHETHER IT ACCEPTS THE CONDITIONS TO CONTINUE MOVING FORWARD WITH THE OPA

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

February 6, 2006 425

* * *

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

January 24, 2006 425

***

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

January 17, 2006 425

GAS NATURAL AFFIRMS THAT THE OPA FOR ENDESA WILL NOT AFFECT JOBS OR INVESTMENTS IN GALICIA

Filed by Gas Natural SDG, S.A. pursuant to Rule 425 of the Securities Act of 1933 Subject Company: Endesa, S.A. Commission File No.: 333-07654 This communication is not an offering document and does not constitute an offer to sell or the solicitation of an offer to buy any securities or a solicitation of any vote or approval. The exchange offer will commence only (1) following approval of a final

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