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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 period March 26, 2004


SANPAOLO IMI S.p.A.
(Exact name of registrant as specified in its charter)

Piazza San Carlo 156
10121 Turin, Italy
(Address of principal executive offices)


        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 ý          Form 40-F o

        Indicate by check mark whether the registrant by furnishing the information contained in this form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2(b) under the Securities Exchange Act of 1934.

Yes o          No ý





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.

    SANPAOLO IMI S.p.A.

Date: March 26, 2004

 

By:

/s/  
GIORGIO SPRIANO      
Giorgio Spriano
Head of Company Secretariat


SANPAOLO IMI GROUP


NEWS RELEASE

Budget expectations confirmed in the first two months of 2004 the Group with growth in net income and operating income

Financial statements for 2003 approved: consolidated net income 972 million euro

Dividend of 0.39 euro per share confirmed (+30% on 2002, dividend yield 4.78% based on average share price in 2003)

The embedded value of the Group's life business grew: SANPAOLO IMI WM 1,198 million euro (+33.26% on 2002) and Fideuram 1,108 million euro (+31.28% on 2002).

Turin, 26 March 2004—The Board of Directors today approved the results of the SANPAOLO IMI Group, which are substantially in line with those contained in the Quarterly Report of 13 February. Data for the first two months of 2004 were also examined, which confirm the good performance of the principal operating items.

The results of the first two months appear in line with budget expectations, thanks to a constant attention to cost control and improvement in net interest and other banking income. Credit quality remains high.

Financial assets of the Group grew by 0.9% from the beginning of the year (an increase of approximately 3.3 billion euro). The increase particularly concerned indirect deposits: assets under management, in fact, grew by approximately 0.7%, assets administered by 1.9%. Direct deposits rose approximately 0.3%. In asset management products, good performance in the financial markets brought an increase in the total asset stock. Insurance products confirmed the growth dynamic which has characterised them in the past years.

The validity of the actions taken 2003, to defend margins and effect the Three-Year Plan is confirmed.

For 2004 the strategies already indicated in the 2003-2005 Plan will be implemented: the Group intends to complete the extension of the Sanpaolo Network distribution model to all the commercial networks, bringing together the search for efficiency, thanks to the single strategic and commercial direction, with the reinforcement of customer relationships, generated by the strong local roots of the various historic brands which make up the Group.

Initiatives aimed at strengthening the know-how, product innovation and rationalisation of the specialist companies by business and the management of the traditional strong points of the Group, such as financial strength and high quality, confirmed by solvency ratios and credit risk indices, accompany the rationalisation of the distribution channel.

*    *    *

The principal consolidated financial data at 31 December 2003 are consistent with those published in the fourth quarter statement:

3


4


The company financial statements show net income of 824 million euro (+57.6% against 2002).

The distribution of a unit dividend of €0.39 (with full tax credit) will be proposed to the Shareholders' Meeting called for 28 and 29 April, on first and second call. Ex-dividend and payment dates are expected to be 24 and 27 May. The dividend provides a yield of 4.78% on the basis of the average value of the Sanpaolo Imi share price in 2003, with an increase for Shareholders of 30% against 2002.

The net result recorded by the insurance companies in the life sector made a strong contribution to Group net income: Sanpaolo Vita, the Sanpaolo Life subsidiary and connected companies (SANPAOLO IMI Wealth Management) contributed 79.5 million euro to Group net income and Fideuram Vita recorded net income of 35.5 million euro.

The importance of the economic contribution of the life sector is evident considering the growth in embedded value in the insurance business, the sum of net worth adjusted to market values and the portfolio of policies in force: for SANPAOLO IMI WM embedded value moved from 899 million euro in 2002 to 1,198 million euro in 2003 (+33.26%) and for Fideuram from 844 million euro to 1.108 million euro (+31.28%).

The consolidated financial statements and the company financial statements will be accompanied by the reports of the Board of Statutory Auditors and Independent Auditors, and will be deposited according to law.

*    *    *

The Board of Directors of SANPAOLO IMI also made the annual check on the independence of the Company's Directors, in the light of the norms contained in the Codice di Autodisciplina delle Società Quotate.

The Board of Directors has established that of the non-executive Directors who are to be considered "not independent", in consideration of their offices in shareholders which form part of the agreement among shareholders SANPAOLO IMI and have significant financial relationships with the Bank:

Anthony Orsatelli

Virgilio Marrone

Iti Mihalich

In the case of all the other non-executive Directors, there are no circumstances to warrant their lack of independence.

The report on the system of corporate governance and self-discipline code will be available together with the documentation for the shareholders' meeting and published on the Group's internet site www.grupposanpaoloimi.com.

5



The US Private Securities Litigation Reform Act of 1995 provides a safe harbor for forward-looking statements. This release contains forward-looking statements which reflect management's current views on certain future events and financial performance. Actual results may differ materially from those projected or implied in the forward-looking statements. Furthermore, certain forward-looking statements are based upon assumptions of events which may not prove to be accurate. The following could cause actual results to differ materially from those projected or implied in any forward-looking statements: competitive conditions or unexpected changes in the markets served by Sanpaolo IMI, fiscal policy or plans in Italy or the European Union, unexpected turbulence in interest rates, foreign exchange rates or equity prices, regional or general changes in asset valuations, the business and financial condition of the company or its customers, Italian and foreign laws, regulations and taxes and the adequacy of loss reserves and general economic conditions in Italy and in other countries where Sanpaolo IMI conducts its business. These factors should not be considered as exhaustive. Because of such uncertainties and risks, readers should not place undue reliance on such forward-looking statements, which speak only as of the date of this release. Sanpaolo IMI assumes no responsibility to update any such forward-looking statements.

INVESTOR RELATIONS
investor.relations@sanpaoloimi.com—Telefax +39 011 555 2989
www.grupposanpaoloimi.com
Dean Quinn (+39 011 555 2593)
Damiano Accattoli (+39 011 555 3590)
Alessia Allemani (+39 011 555 6147)
Anna Monticelli (+39 011 555 2526)

6




Reclassified consolidated statement of income

 
  2003
  2002
pro-forma(1)

  Change
2002/2003
pro-forma

 
  (€/mil)

  (€/mil)

  (%)

NET INTEREST INCOME   3,716   3,653   +1.7
   
 
 
Net commissions and other net dealing revenues   3,036   2,795   +8.6
Profits and losses from financial transactions and dividends on shares   447   304   +47.0
Profits from companies carried at equity and dividends from shareholdings   283   314   -9.9
   
 
 
NET INTEREST AND OTHER BANKING INCOME   7,482   7,066   +5.9
   
 
 
Administrative costs   -4,610   -4,578   +0.7
  —personnel   -2,841   -2,814   +1.0
  —other administrative costs   -1,512   -1,508   +0.3
  —indirect duties and taxes   -257   -256   +0.4
Other operating income, net   329   354   -7.1
Adjustments to tangible and intangible fixed assets   -484   -508   -4.7
   
 
 
OPERATING INCOME   2,717   2,334   +16.4
   
 
 
Adjustments to goodwill and merger and consolidation differences   -158   -218   -27.5
Provisions and net adjustments to loans and financial fixed assets   -859   -1,412   -39.2
  —provisions for risks and charges   -195   -261   -25.3
  —adjustments to loans and provisions for
    guarantees and commitments
  -724   -590   n.s.
  —net adjustments to financial fixed assets   60   -561   n.s.
   
 
 
INCOME BEFORE EXTRAORDINARY ITEMS   1,700   704   +141.5
   
 
 
Net extraordinary income   -32   320   n.s.
   
 
 
INCOME BEFORE TAXES   1,668   1,024   +62.9
   
 
 
Income taxes for the period   -657   -443   +48.3
Change in reserves for general banking risks   9   363   -97.5
Income attributable to minority interests   -48   -43   +11.6
   
 
 
NET INCOME   972   901   +7.9
   
 
 

(1)
The pro forma data for the year 2002 were prepared to enable consistent comparison with the data for the year 2003. The pro forma situations reflect conventionally the full consolidation of Inter-Europa Bank and Eptaconsors and proportional consolidation of Cariforlì from 1 January 2002, as well as the exclusion from the area of full consolidation of Banque Sanpaolo and IW Bank and proportional consolidation of Finconsumo Banca, again from that date.

7



Quarterly analysis of the reclassified consolidated statement of income

 
  2003
  2002 pro forma(1)
 
  Fourth
quarter

  Third
quarter
pro-forma(1)

  Second
quarter
pro-forma(1)

  First
quarter
pro-forma(1)

  Quarterly
average

  Fourth
quarter

  Third quarter
  Second
quarter

  First quarter
  Quarterly
average

 
  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

   
 
 
 
 
 
 
 
 
 
NET INTEREST INCOME   921   939   932   924   929   926   906   920   901   913
   
 
 
 
 
 
 
 
 
 
Net commissions and other net dealing revenues   855   786   713   682   759   751   665   686   693   699
Profitti e Profits and losses from financial transactions and dividends on shares   108   76   178   85   112   68   22   129   85   76
Profits from companies carried at equity and dividends from shareholdings   61   67   99   56   71   58   60   142   54   79
   
 
 
 
 
 
 
 
 
 
NET INTEREST AND OTHER BANKING INCOME   1,945   1,868   1,922   1,747   1,871   1,803   1,653   1,877   1,733   1,767
   
 
 
 
 
 
 
 
 
 
Administrative costs   -1,214   -1,128   -1,152   -1,116   -1,153   -1,205   -1,113   -1,157   -1,103   -1,145
  —personnel   -735   -696   -713   -697   -710   -733   -683   -709   -689   -704
  —other administrative costs   -422   -365   -372   -353   -378   -404   -372   -378   -354   -377
  —indirect duties and taxes   -57   -67   -67   -66   -64   -68   -58   -70   -60   -64
Other operating income, net   85   82   81   81   82   92   93   91   78   89
Adjustments to tangible and intangible fixed assets   -148   -113   -116   -107   -121   -159   -128   -112   -109   -127
   
 
 
 
 
 
 
 
 
 
OPERATING INCOME   668   709   735   605   679   531   505   699   599   584
   
 
 
 
 
 
 
 
 
 
Adjustments to goodwill and merger and consolidation differences   -43   -35   -46   -34   -40   -91   -40   -45   -42   -55
Provisions and net adjustments to loans and financial fixed assets   -474   -71   -180   -134   -215   -658   -453   -150   -151   -353
  —provisions for risks and charges   -88   -44   -36   -27   -49   -98   -65   -53   -45   -65
  —adjustments to loans and provisions for guarantees and commitments   -432   -122   -102   -68     -263   -181   -54   -92   -148
  —net adjustments to financial fixed assets   46   95   -42   -39   15   -297   -207   -43   -14   -140
   
 
 
 
 
 
 
 
 
 
INCOME BEFORE EXTRAORDINARY ITEMS   151   603   509   437   424   -218   12   504   406   176
   
 
 
 
 
 
 
 
 
 
Net extraordinary income   179   -38   -215   42   -8   150   35   79   56   80
   
 
 
 
 
 
 
 
 
 
INCOME BEFORE TAXES   330   565   294   479   416   -68   47   583   462   256
   
 
 
 
 
 
 
 
 
 
Income taxes for the period   -133   -213   -122   -189   -164   42   -74   -242   -169   -111
Change in reserves for general banking risks   3   6       2   352   13   -2     91
Income attributable to minority interests   -14   -13   -12   -9   -12     -14   -15   -14   -11
   
 
 
 
 
 
 
 
 
 
NET INCOME   186   345   160   281   242   326   -28   324   279   225
   
 
 
 
 
 
 
 
 
 

(1)
The pro forma data, were prepared to enable consistent comparison. The pro forma situations reflect conventionally the full consolidation of Inter-Europa Bank and Eptaconsors and proportional consolidation of Cariforlì from 1 January 2002, the exclusion from the area of full consolidation of Banque Sanpaolo IW Bank and proportional consolidation of Finconsumo Banca, again from that date, as well as, for the first quarter 2002, the full consolidation of the ex Cardine Group, for the first time at 30 June 2002 with accounting effect from 1 January 2002.

8



Reclassified consolidated balance sheet

 
  31/12/2003
  31/12/2002
pro-forma (1)

  Change 31/12/03-
31/12/02 pro-forma

 
  (€/mil)
  (€/mil)
  (%)
ASSETS            
Cash and deposits with central banks and post offices   1,474   1,499   -1.7
Loans   146,877   145,921   +0.7
  —due from banks   22,278   21,744   +2.5
  —loans to customers   124,559   124,177   +0.3
Dealing securities   22,357   19,015   +17.6
Fixed assets   9,822   9,103   +7.9
  —investment securities   2,935   2,391   +22.8
  —equity investments   4,572   4,172   +9.6
  —intangible fixed assets   343   398   -13.8
  —tangible fixed assets   1,972   2,142   -7.9
Differences arising on consolidation and on application of the equity method   959   1,080   -11.2
Other assets   21,091   23,027   -8.4
   
 
 
Total assets   202,580   199,645   +1.5
   
 
 
LIABILITIES            
Payables   160,255   157,369   +1.8
  —due to banks   28,534   24,133   +18.2
  —due to customers and securities issued   131,721   133,236   -1.1
Provisions   4,019   3,889   +3.3
  —for taxation   732   742   +1.3
  —for termination indemnities   946   967   -2.2
  —for risks and charges   2,037   1,832   +11.2
  —for pensions and similar   304   348   -12.6
Other liabilities   20,626   20,738   -0.5
Subordinated liabilities   6,414   6,605   -2.9
Minority interests   271   342   -20.8
Shareholders' equity   10,995   10,702   +2.7
   
 
 
Total liabilities   202,580   199,645   +1.5
   
 
 

(1)
The pro forma data at 31 December 2002, were prepared to enable consistent comparison with the data at 31 December 2003. The pro forma situations reflect conventionally the full consolidation of Inter-Europa Bank and Eptaconsors and proportional consolidation of Cariforlì from 1 January 2002, as well as the exclusion from the area of full consolidation of Banque Sanpaolo and IW Bank and proportional consolidation of Finconsumo Banca, again from that date.

9



Quarterly analysis of the reclassified consolidated balance sheet

 
  2003
   
   
   
   
 
  2002 pro-forma(1)
 
  31/12
pro-forma(1)

  30/9
pro-forma(1)

  30/6
pro-forma(1)

  31/3
pro-forma(1)

 
  31/12
  30/9
  30/6
  31/3
 
  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

  (€/mil)

ASSETS                                
Cash and deposits with central banks and post offices   1,474   963   974   967   1,499   965   1,086   1,502
Loans   146,877   139,679   146,381   148,267   145,921   142,835   143,830   144,214
  —due from banks   22,278   17,607   20,050   22,741   21,744   21,604   22,450   20,702
  —loans to customers   124,599   122,072   126,331   125,526   124,177   121,231   121,380   123,512
Dealing securities   22,357   23,642   24,580   20,489   19,015   23,068   24,384   25,058
Fixed assets   9,822   9,690   9,586   9,866   9,103   9,812   10,406   11,521
  —investment securities   2,935   2,864   2,895   2,950   2,391   2,634   3,185   3,484
  —equity investments   4,572   4,424   4,253   4,453   4,172   4,478   4,428   5,175
  —intangible fixed assets   343   334   339   370   398   371   389   411
  —tangible fixed assets   1,972   2,068   2,099   2,093   2,142   2,329   2,404   2,451
Differences arising on consolidation and on application of the equity method   959   992   1,027   1,055   1,080   1,148   1,195   1,175
Other assets   21,901   22,893   26,460   22,131   23,027   22,982   22,781   22,831
   
 
 
 
 
 
 
 
Total assets   202,580   197,859   209,008   202,775   199,645   200,810   203,682   206,301
   
 
 
 
 
 
 
 
LIABILITIES                                
Payables   160,255   155,736   160,518   162,154   157,369   159,913   162,937   164,353
  —due to banks   28,534   26,638   28,087   27,896   24,133   26,686   30,155   32,455
  —due to customers and securities issued   131,721   129,098   132,431   134,258   133,236   133,227   132,782   131,898
Provisions   4,019   4,026   3,680   3,908   3,889   4,293   4,181   4,585
  —for taxation   732   725   436   838   742   1,195   1,078   1,412
  —for termination indemnities   946   985   971   971   967   975   995   998
  —for risks and charges   2,037   2,007   1,925   1,751   1,832   1,776   1,760   1,800
  —for pensions and similar   304   309   348   348   348   347   348   375
Other liabilities   20,626   20,555   27,311   19,010   20,738   19,593   19,566   19,505
Subordinated liabilities   6,414   6,484   6,784   6,533   6,605   6,210   6,147   5,785
Minority interests   271   298   292   354   342   437   445   805
Shareholders' equity   10,995   10,760   10,423   10,816   10,702   10,364   10,406   11,268
   
 
 
 
 
 
 
 
Total liabilities   202,580   197,859   209,008   202,775   199,645   200,810   203,682   206,301
   
 
 
 
 
 
 
 

(1)
The pro forma data, were prepared to enable consistent comparison. The pro forma situations reflect conventionally the full consolidation of Inter-Europa Bank and Eptaconsors and proportional consolidation of Cariforlì from 1 January 2002, the exclusion from the area of full consolidation of Banque Sanpaolo IW Bank and proportional consolidation of Finconsumo Banca, again from that date, as well as, for the first quarter 2002, the full consolidation of the ex Cardine Group, for the first time at 30 June 2002 with accounting effect from 1 January 2002.

10



Parent Bank reclassified consolidated statement of income

 
  2003
  2002
pro-forma(1)

  Change
2003/2002
pro-forma

 
  (€/mil)

  (€/mil)

  (%)

NET INTEREST INCOME   1,849   1,829   +1.1
   
 
 
Net commissions and other net dealing revenues   1,467   1,322   +11.0
Profits and losses from financial transactions and dividends on shares   89   55   +61.8
Profits from companies carried at equity and dividends from shareholdings   832   628   +32.5
   
 
 
NET INTEREST AND OTHER BANKING INCOME   4,237   3,834   +10.5
   
 
 
Administrative costs   -2,723   -2,713   +0.4
  —personnel   -1,665   -1,665  
  —other administrative costs   -918   -914   +0.4
  —indirect duties and taxes   -140   -144   -2.8
Other operating income, net   375   390   -3.8
Adjustments to tangible and intangible fixed assets   -339   -352   -3.7
   
 
 
OPERATING INCOME   1,550   1,159   +33.7
   
 
 
Adjustments to goodwill and merger and consolidation differences   -115   -148   -22.3
Provisions and net adjustments to loans and financial fixed assets   -579   -710   -18.5
  —provisions for risks and charges   -117   -143   -18.2
  —adjustments to loans and provisions for
    guarantees and commitments
  -401   -229   n.s.
  —net adjustments to financial fixed assets   -61   -338   -82.0
   
 
 
INCOME BEFORE EXTRAORDINARY ITEMS   856   301   +184.4
   
 
 
Net extraordinary income   233   425   -45.2
   
 
 
INCOME BEFORE TAXES   1,089   726   +50.0
   
 
 
Income taxes for the period   -265   -203   +30.5
Change in reserves for general banking risks       n.s.
   
 
 
NET INCOME   824   523   +57.6
   
 
 

11



Parent Bank reclassified consolidated balance sheet

 
  31/12/2003
  31/12/2002
pro-forma(1)

  Change 31/12/03-
31/12/02 pro-forma

 
  (€/mil)
  (€/mil)
  (%)
ASSETS            
Cash and deposits with central banks and post offices   741   835   -11.3
Loans   91,368   86,155   +6.1
  —due from banks   27,385   20,512   +33.5
  —loans to customers   63,983   65,643   -2.5
Dealing securities   8,816   11,950   -26.2
Fixed assets   14,820   13,690   +8.3
  —investment securities   2,458   2,033   +20.9
  —equity investments   10,291   9,344   +10.1
  —intangible fixed assets   797   829   -3.9
  —tangible fixed assets   1,274   1,484   -14.2
Other assets   9,235   8,921   +3.5
   
 
 
Total assets   124,980   121,551   +2.8
   
 
 
LIABILITIES            
Payables   97,470   94,750   +2.9
  —due to banks   37,800   37,143   +1.8
  —due to customers and securities issued   59,670   57,607   +3.6
Provisions   2,490   2,512   -0.9
  —for taxation   660   790   -16.5
  —for termination indemnities   529   512   +3.3
  —for risks and charges   1,301   1,169   +11.3
  —for pensions and similar     41   n.s.
Other liabilities   8,787   7,934   +10.8
Subordinated liabilities   5,887   6,090   -3.3
Shareholders' equity   10,346   10,265   +0.8
  —capital   5,144   5,144    
  —reserves   4,378   4,164    
  —net income   824   523    
  —adjustments for alignment with net income     434    
   
 
 
Total liabilities   124,980   121,551   +2.8
   
 
 

12




QuickLinks

SIGNATURES
SANPAOLO IMI GROUP
NEWS RELEASE
Reclassified consolidated statement of income
Quarterly analysis of the reclassified consolidated statement of income
Reclassified consolidated balance sheet
Quarterly analysis of the reclassified consolidated balance sheet
Parent Bank reclassified consolidated statement of income
Parent Bank reclassified consolidated balance sheet