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As filed with the Securities and Exchange Commission on June 30, 2005   SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549
  
 FORM 20-F/A Amendment No. 1 o
    
    REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR
(g)  OF
THE SECURITIES EXCHANGE ACT OF 1934
 OR þ
    
    ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d)
OFTHE SECURITIES EXCHANGE ACT OF 1934
 For the Fiscal Year Ended: December 31, 2004 OR o
    
    TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
OF
THE SECURITIES EXCHANGE ACT OF 1934
 1-14002
(Commission file number) DE RIGO S.p.A.  DE RIGO S.p.A.  Italy
(Jurisdiction of incorporation or organization) Zona Industriale Villanova,
32013 Longarone (BL), Italy
(Address of principal executive offices) Securities registered or to be registered pursuant to Section 12(b) of the Act. Name of each exchangeTitle of each class
    
    on which registeredAmerican Depositary Shares
    
    New York Stock ExchangeOrdinary shares with a par value of 0.26 each*
    
    New York Stock Exchange*
 Securities registered or to be registered pursuant to Section 12(g) of the Act: None
(Title of Class) Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None
(Title of Class) Indicate the number of outstanding shares of each of the issuers classes of capital or
common stock as of the close of the period covered by the annual report. 42,486,776 ordinary shares Indicate by check mark whether the registrant (1) has filed all reports required to be filed
by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or
for such shorter period that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days. Yes þ
    
    No o
 Indicate by check mark which financial statement item the registrant has elected to follow. Item 17 o
    
    Item 18 þ
 
 
    
    Not for trading, but only in connection with the registration of the American Depositary Shares.




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EXPLANATORY NOTE This Amendment No. 1 to De Rigo S.p.A.s Annual Report on Form 20-F for the fiscal year ended
December 31, 2004 (the Annual Report) is filed solely to include a dated signature page, as well
as dated versions of Exhibits 12.1, 12.2 and 13.1. Due to a technical error, the versions of the signature page and Exhibits 12.1, 12.2 and 13.1
included in the Annual Report, as filed electronically with the Securities and Exchange Commission
via the EDGAR system on June 28, 2005, did not include the dates on which the signed original of
each such document was executed. Other than the foregoing, no part of the Annual Report on Form 20-F filed on June 28, 2005 is
being amended. Accordingly, pursuant to Rule 12b-15 under the Securities Exchange Act of 1934, as amended, De
Rigo S.p.A. hereby amends the signature page and Exhibits 12.1, 12.2 and 13.1 to the Annual Report
in their entirety and replaces such signature page and Exhibits with the following:




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Item 19.Exhibits filed with this Amendment No.1 Index to Exhibits filed with this Report  12.1
    
    CEO certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.12.2
    
    CFO certification pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.13.1
    
    Certification pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.




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SIGNATURES The registrant hereby certifies that it meets all of the requirements of filing on Form
20-F and has duly caused and authorized the undersigned to sign this annual report on its behalf. De Rigo S.p.A.(Registrant)/s/ Ennio De RigoEnnio De RigoChairman of the Board and Chief Executive Officer Date: June 28, 2005




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SIGNATURES The registrant hereby certifies that it meets all of the requirements of filing on Form
20-F/A and has duly caused and authorized the undersigned to sign this annual report on its behalf. De Rigo S.p.A.(Registrant)/s/ Ennio De RigoEnnio De RigoChairman of the Board and Chief Executive Officer Date: June 30, 2005