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)
Indicate by check mark whether the registrant files or will file
annual reports under cover Form 20-F or Form 40-F:
| Form 20-F x | Form 40-F ¨ |
Indicate by check mark if the registrant is submitting the Form 6-K
in paper as permitted by Regulation S-T Rule 101(b)(1):
| Yes | ¨ | No | x |
Indicate by check mark if the registrant is submitting the Form 6-K
in paper as permitted by Regulation S-T Rule 101(b)(7):
| Yes | ¨ | No | x |
Indicate by check mark whether by furnishing the information
contained in this Form, the Registrant is also thereby furnishing the information to the
Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934:
| Yes | ¨ | No | x |
If “Yes” is marked, indicate below the file number assigned to the registrant
in connection with Rule 12g3-2(b):N/A
Carlos J. Alvarez Chief Financial Officer |  |
This is a translation of a Spanish language relevant fact.
In case of discrepancies, the Spanish version will prevail.
Re: RELEVANT FACT
Barcelona, May 11, 2006
Sirs:
Having ceased his work relationship with GAS NATURAL SDG, S.A., the Director Mr. Guzman Solana Gomez no longer holds the title of Executive Strategic Advisor (Consejero Ejecutivo) to return to the position of Director (Consejero Dominical), proposed by Repsol YPF, S.A.
Very truly yours,
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.
| GAS NATURAL SDG, S.A. | ||||||
| Date: May 11, 2006 | By: | /s/ Carlos J. Álvarez Fernández | ||||
| Name: Carlos J. Álvarez Fernández | ||||||
| Title: Chief Financial Officer | ||||||