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

                              CONVERIUM HOLDING AG
                   ------------------------------------------
                 (Translation of registrant's name into English)

                                 Baarerstrasse 8
                                   CH-6300 Zug
                                   Switzerland
             -------------------------------------------------------
                    (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    X    Form 40-F
                                 -------           -------

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                No    X
                                 -------           -------

If "Yes" is marked, indicate the file number assigned to the registrant in
connection with Rule 12g3-2(b): 82- Not Applicable





                           Converium Holding Ltd, Zug


Zug,  Switzerland  -  February  28,  2006 -  Converium  publishes  the  restated
financial  information  for the periods from 1998 through 2004,  and for each of
the  quarters  from March 31, 2003  through  June 30,  2005.  The  Company  also
provides its third quarter 2005 results  including  comparative 2004 information
and segment data.


Content

A) Restatement of accounts                                         pages 2 - 15
B) Financial information for the three and nine months
      ended September 30, 2005                                   pages 16  - 30








A)   Restatement of accounts


Restatement of accounts

On  November  4, 2005,  Converium  announced  its plan to restate  prior  period
financial  statements.  This  decision  was  taken in light  of  findings  of an
extensive  internal review,  overseen by the Audit Committee with the assistance
of independent outside counsel.

On December 19, 2005,  Converium  reported on the status of the internal review,
restatement  of accounts  and third  quarter  results.  At that time,  Converium
provided unaudited restated financial  information for its December 31, 2004 and
June 30, 2005 balance sheets.

As a result of the  review  and as  indicated  in its  December  19,  2005 press
release, Converium today provides restated financial information for the periods
from 1998 through  2004, as well as for each of the quarters from March 31, 2003
through June 30, 2005.  Converium expects to file shortly an amended Form 20-F/A
reflecting the restatement  adjustments and their impact on previous disclosures
and financial statements.

While additional  information  regarding the restatement will be provided in the
Form 20-F/A,  a summary of the nature and impact of the  restatement is provided
below.


Background to the Restatement: internal review

Ongoing   investigations   of  the  insurance  and   reinsurance   industry  and
non-traditional  insurance and reinsurance  products are being conducted by U.S.
and international  regulators and governmental  authorities,  including the U.S.
Securities and Exchange Commission and the New York Attorney General.

On March 8,  2005,  MBIA  issued  a press  release  stating  that  MBIA's  audit
committee  undertook an  investigation  to determine  whether  there was an oral
agreement with MBIA under which MBIA would replace Axa Re Finance as a reinsurer
to CRNA by no later than October 2005. The press release stated that it appeared
likely that MBIA made such an agreement or understanding  with Axa Re Finance in
1998.  Thereafter,  on April 19, 2005,  CRNA  received  subpoenas  from the U.S.
Securities  and  Exchange  Commission  and the  Office of the New York  Attorney
General seeking documents related to certain transactions between CRNA and MBIA.
Converium  has  also  received  additional  inquiries  from the  Securities  and
Exchange  Commission  and other  governmental  authorities  in Europe  regarding
non-traditional insurance and reinsurance products and/or the restatement of its
financial  statements.   The  inquiries  are  ongoing  and  Converium  is  fully
cooperating with the governmental authorities.

In view of the industry investigations and the events relating to MBIA described
above,  Converium engaged  independent  outside counsel to assist it in a review
and  analysis of certain of its  reinsurance  transactions,  including  the MBIA
transaction.  The internal  review,  which was overseen by the Audit  Committee,
addressed issues arising from the ongoing governmental inquiries and Converium's
own decision to review certain  additional  items.  The internal review involved
the   assessment   of  numerous   assumed  and  ceded   transactions   including
structured/finite  risk and other  reinsurance  transactions and encompassed all
business  units of  Converium,  a review of  hundreds of  thousands  of e-mails,
attachments to e-mails and other documents and interviews of all current members
of the Global Executive Committee and the Board of Directors, as well as certain
former members of senior management and other employees of Converium.  The Audit
Committee  believes  that the scope and process of the internal  review has been
sufficient to determine whether  Converium's assumed and ceded transactions were
improperly  accounted  for  as  reinsurance,  rather  than  as  deposits.  After
discussing  the  findings  of  Converium's   extensive   internal   review  with
independent outside counsel,  the Audit Committee determined that the accounting
corrections below were appropriate and authorized the Restatement of Converium's
financial  statements  as of and for the years ended  December  31, 2004 through
1998. As part of this process,  the Audit Committee has involved its independent
group auditors,  PricewaterhouseCoopers  Ltd. For further information  regarding
these  accounting  adjustments,  see Note 3 to our 2004  consolidated  financial
statements  included in "Item 8. --  Financial  Information  -- A.  Consolidated
Statements  and Other  Financial  Information,"  and "Item 5. --  Operating  and
Financial Review and Prospects -- A. Operating Results".  Financial  information
for each of the  quarters  ended March 31, 2003  through  June 30, 2005 has also
been  restated.  All amounts  included  herein have been adjusted to reflect the
Restatement.  Previously  published  financial  statements  regarding any of the
above periods should no longer be relied upon.


                                                                               2




As  noted  above,   Converium  is  fully   cooperating   with  the  governmental
authorities, and is in the process of sharing the results of its internal review
with the relevant authorities.  Although the internal review was extensive,  the
ongoing governmental inquiries,  or other developments,  could result in further
restatements  of  Converium's  financial  results in the future and could have a
material adverse effect on Converium.


Restatement overview

As a result of the internal review,  Converium concluded that the accounting for
a  number  of  reinsurance  transactions  needed  to be  corrected  and that its
financial  statements and selected  financial and other data should be restated.
The  Restatement  of  reinsurance  contracts  relates  primarily  to the US GAAP
requirement  that in order to  qualify  for  reinsurance  accounting  treatment,
reinsurance  agreements transfer significant risk, as required by SFAS 113. Cash
flows under reinsurance  contracts that transfer significant risk are recognized
as premiums and losses.  Reinsurance  contracts that do not transfer significant
risk are not  reported as premiums  and losses,  but are instead  accounted  for
using  deposit  accounting,  with cash flows  recognized  as  deposit  assets or
liabilities with associated other income or expense. Converium also restated its
accounting for income taxes and certain other items.

The tables  below show the  reconciliation  of the  previously  reported  income
statements and balance sheets to the restated versions, broken out by respective
adjustment category as of and for the years ended December 31, 2004, 2003, 2002,
2001, 2000, 1999 and 1998.




Consolidated statements of (loss) income
(US$ million)
Year ended December 31                            2004                                         2003
                                     As                                           As
                                  previously Reinsurance Taxes  Other    As    previously  Reinsurance Taxes Other        As
                                  reported   transactions       Items  restated  reported transactions       Items    restated
                                 ---------------------------------------------------------------------------------------------
Revenues
                                                                                              
Gross premiums written              3,840.9      -17.2      -   155.0 3,978.7     4,223.9      -28.4     -    104.9   4,300.4
-------------------------------- -------------------------------------------- -----------------------------------------------
Less ceded premiums written          -287.9       70.6      -   -35.3  -252.6      -396.9       96.9     -    -77.7    -377.7
-------------------------------- -------------------------------------------- -----------------------------------------------
Net premiums written                3,553.0       53.4      -  119.7  3,726.1     3,827.0       68.5     -     27.2   3,922.7
-------------------------------- -------------------------------------------- -----------------------------------------------
Net change in unearned premiums       132.1       24.0      -      -    156.1      -150.5       -4.4     -     -0.0    -154.9
----------------------------------------------------------------------------- -----------------------------------------------
Net premiums earned                 3,685.1       77.4      -  119.7  3,882.2     3,676.5       64.1     -     27.2   3,767.8
-------------------------------- -------------------------------------------- -----------------------------------------------
Net investment income                 311.6          -      -    1.1    312.7       233.0          -     -      1.4    234.4
-------------------------------- -------------------------------------------- -----------------------------------------------
Net realized capital gains
 (losses)                              46.5          -      -      -     46.5        18.4          -    -         -      18.4
----------------------------------------------------------------------------- -----------------------------------------------
Other (loss) income                    -2.6        3.5      -   -9.1     -8.2         2.7       17.5    -      -2.7      17.5
-------------------------------- -------------------------------------------- -----------------------------------------------
Total revenues                      4,040.6       80.9      -  111.7  4,233.2     3,930.6       81.6    -      25.9   4,038.1
-------------------------------- -------------------------------------------- ----------------------------------------------

Benefits, losses and expenses
Losses, loss expenses and life
 benefits                          -3,263.1      -44.7      -  -34.7 -3,342.5    -2,674.2      -85.9    -         -  -2,760.1
----------------------------------------------------------------------------- -----------------------------------------------
Acquisition costs                    -842.5        9.9      -  -79.8   -912.4      -803.2      -16.6    -     -12.2    -832.0
-------------------------------- -------------------------------------------- -----------------------------------------------
Other operating and
 administration expenses             -217.9          -      -   -1.9   -219.8      -197.8          -    -      -4.7    -202.5
----------------------------------------------------------------------------- -----------------------------------------------
Interest expense                      -33.1          -      -      -    -33.1       -31.0          -    -         -     -31.0
-------------------------------- -------------------------------------------- -----------------------------------------------
Impairment of goodwill                -94.0          -      -      -    -94.0           -          -    -         -         -
-------------------------------- -------------------------------------------- -----------------------------------------------
Amortization of intangible
 assets                                -9.9          -      -      -     -9.9           -          -    -      -1.8      -1.8
-------------------------------- -------------------------------------------- -----------------------------------------------
Restructuring costs                    -2.7          -      -      -     -2.7           -          -    -         -         -
-------------------------------- -------------------------------------------- -----------------------------------------------
Total benefits, losses and
 expenses                          -4,463.2      -34.8      - -116.4 -4,614.4    -3,706.2     -102.5    -     -18.7  -3,827.4
----------------------------------------------------------------------------- -----------------------------------------------
(Loss) income before taxes           -422.6       46.1      -   -4.7   -381.2       224.4      -20.9    -       7.2     210.7
-------------------------------- -------------------------------------------- -----------------------------------------------
Income tax (expense) benefit         -338.2      -17.1  152.2    1.8   -201.3       -39.3      -10.2 13.2       3.5     -32.8
-------------------------------- -------------------------------------------- -----------------------------------------------
Net (loss) income                    -760.8       29.0 152.2    -2.9   -582.5       185.1      -31.1 13.2      10.7    177.9
-------------------------------- -------------------------------------------- -----------------------------------------------





Consolidated statements of income
(US$ million)
Year ended December 31                                                                  2002
                                                                                  As
                                                                             previously Reinsurance Taxes Other   As
                                                                              reported  transactions      Items restated
                                                                              ------------------------------------------
Revenues
                                                                                                    
Gross premiums written                                                           3,535.8     -163.3     - -0.1  3,372.4
----------------------------------------------------------------------------- ------------------------------------------
Less ceded premiums written                                                       -213.6       76.4     -    -   -137.2
----------------------------------------------------------------------------- ------------------------------------------
Net premiums written                                                             3,322.2      -86.9     - -0.1  3,235.2
----------------------------------------------------------------------------- ------------------------------------------
Net change in unearned premiums                                                   -156.7       -1.0     -    -   -157.7
------------------------------------------------------------------------------------------------------------------------
Net premiums earned                                                              3,165.5      -87.9     - -0.1  3,077.5
----------------------------------------------------------------------------- ------------------------------------------
Net investment income                                                              251.8          -     -    -    251.8
----------------------------------------------------------------------------- ------------------------------------------
Net realized capital gains (losses)                                                -10.3          -     -    -    -10.3
------------------------------------------------------------------------------------------------------------------------
Other (loss) income                                                                 -1.2       32.8     -    -     31.6
----------------------------------------------------------------------------- ------------------------------------------
Total revenues                                                                   3,405.8      -55.1     - -0.1  3,350.6
----------------------------------------------------------------------------- ------------------------------------------

Benefits, losses and expenses
Losses, loss expenses and life benefits                                         -2,492.0        1.0     - -0.1 -2,491.1
------------------------------------------------------------------------------------------------------------------------
Acquisition costs                                                                 -666.7       23.9     - -4.0   -646.8
----------------------------------------------------------------------------- ------------------------------------------
Other operating and administration expenses                                       -173.3          -     - -5.1   -178.4
------------------------------------------------------------------------------------------------------------------------
Interest expense                                                                   -16.4          -     -    -    -16.4
----------------------------------------------------------------------------- ------------------------------------------
Total benefits, losses and expenses                                             -3,348.4       24.9     - -9.2 -3,332.7
------------------------------------------------------------------------------------------------------------------------
Income (loss) before taxes                                                          57.4      -30.2     - -9.3     17.9
----------------------------------------------------------------------------- ------------------------------------------
Income tax benefit (expense)                                                        49.4        2.5 -34.7  0.7     17.9
----------------------------------------------------------------------------- ------------------------------------------
Net income (loss)                                                                  106.8      -27.7 -34.7 -8.6     35.8
----------------------------------------------------------------------------- ------------------------------------------


                                                                               3






Historical combined statements of loss
(US$ million)
Year ended December 31                                2001                                      2000
                                         As                                        As
                                     previously Reinsurance Taxes Other   As      previously Reinsurance Taxes Other   As
                                      reported  transactions      Items restated  reported   transactions      Items restated
                                     ----------------------------------------------------------------------------------------
Revenues
                                                                                                  
Gross premiums written                  2,881.2      -34.4    -    -   2,846.8     2,565.8      -18.7      -     -  2,547.1
------------------------------------ ----------------------------------------- ----------------------------------------------
Less ceded premiums written              -398.6      204.5    -    -    -194.1      -569.8      203.4      -     -   -366.4
------------------------------------ ----------------------------------------- ----------------------------------------------
Net premiums written                    2,482.6      170.1    -    -   2,652.7     1,996.0      184.7      -     -  2,180.7
------------------------------------ ----------------------------------------- ----------------------------------------------
Net change in unearned premiums          -187.4      -16.8    -    -   -204.2       -134.5        8.3      -     -   -126.2
------------------------------------------------------------------------------ ----------------------------------------------
Net premiums earned                     2,295.2      153.3    -    -  2,448.5      1,861.5      193.0      -     -  2,054.5
------------------------------------ ----------------------------------------- ----------------------------------------------
Net investment income                     228.7          -    -  6.2    234.9        176.0          -      -     -    176.0
------------------------------------ ----------------------------------------- ----------------------------------------------
Net realized capital gains (losses)       -18.4          -    -    -    -18.4         83.7          -      -     -     83.7
------------------------------------------------------------------------------ ----------------------------------------------
Other (loss) income                        -5.8       14.9    - -6.2      2.9         29.3       13.9      -     -     43.2
------------------------------------ ----------------------------------------- ----------------------------------------------
Total revenues                          2,499.7      168.2    -    -  2,667.9      2,150.5      206.9      -     -  2,357.4
------------------------------------ ----------------------------------------- ----------------------------------------------

Benefits, losses and expenses
Losses, loss expenses and life
 benefits                              -2,300.5     -160.1    -    - -2,460.6    -1,604.5      -281.1      -     - -1,885.6
------------------------------------------------------------------------------ ----------------------------------------------
Acquisition costs                        -508.1       -8.8    -    -   -516.9      -454.4       -27.2      -     -   -481.6
------------------------------------ ----------------------------------------- ----------------------------------------------
Other operating and administration
 expenses                                -146.4          -    -    -   -146.4      -116.0           -      -     -   -116.0
------------------------------------------------------------------------------ ----------------------------------------------
Interest expense                          -24.2          -    -    -    -24.2       -17.1           -      -     -    -17.1
------------------------------------ ----------------------------------------- ----------------------------------------------
Amortization of goodwill                   -7.8          -    -    -     -7.8        -7.3           -      -     -     -7.3
------------------------------------ ----------------------------------------- ----------------------------------------------
Total benefits, losses and expenses    -3,037.0     -168.9    -    - -3,205.9    -2,199.3      -308.3      -     - -2,507.6
------------------------------------------------------------------------------ ----------------------------------------------
Loss before taxes                        -537.3       -0.7    -    -   -538.0       -48.8      -101.4      -     -   -150.2
------------------------------------ ----------------------------------------- ----------------------------------------------
Income tax benefit (expense)              169.9       -0.3 12.8    -    182.4        19.5        28.2   -9.6     -    38.1
------------------------------------ ----------------------------------------- ----------------------------------------------
Net (loss) income                        -367.4       -1.0 12.8    -   -355.6       -29.3       -73.2   -9.6     -   -112.1
------------------------------------ ----------------------------------------- ----------------------------------------------


Historical combined statements of income
(US$ million)
Year ended December 31                               1999                                      1998
                                         As                                        As
                                     previously Reinsurance Taxes Other   As     previously Reinsurance Taxes Other    As
                                     reported   transactions      Items restated reported   transactions      Items restated
                                     --------------------------------------------------------------------------------------
Revenues
Gross premiums written                  1,928.7      -18.6    -    -  1,910.1     1,458.8        -6.1      -     -  1,452.7
------------------------------------ ----------------------------------------- --------------------------------------------
Less ceded premiums written              -358.5       17.5    -    -   -341.0      -213.7         4.9      -     -   -208.8
------------------------------------ ----------------------------------------- --------------------------------------------
Net premiums written                    1,570.2       -1.1    -    -  1,569.1     1,245.1        -1.2      -     -  1,243.9
------------------------------------ ----------------------------------------- --------------------------------------------
Net change in unearned premiums          -168.7        1.0    -    -   -167.7       -17.7         0.5      -     -    -17.2
------------------------------------------------------------------------------ --------------------------------------------
Net premiums earned                     1,401.5       -0.1    -    -  1,401.4     1,227.4        -0.7      -     -  1,226.7
------------------------------------ ----------------------------------------- --------------------------------------------
Net investment income                     214.0          -    -    -    214.0       255.4           -      -     -    255.4
------------------------------------ ----------------------------------------- --------------------------------------------
Net realized capital gains (losses)        76.3          -    -    -     76.3        78.9           -      -     -     78.9
------------------------------------------------------------------------------ --------------------------------------------
Other income                               22.1        2.1    -  1.2     25.4        24.8         0.7      -   2.1     27.6
------------------------------------ ----------------------------------------- --------------------------------------------
Total revenues                          1,713.9        2.0    -  1.2  1,717.1     1,586.5           -      -   2.1  1,588.6
------------------------------------ ----------------------------------------- --------------------------------------------

Benefits, losses and expenses
Losses, loss expenses and life
 benefits                              -1,138.7       -0.6    -    - -1,139.3      -917.3         0.5      -     -   -916.8
------------------------------------------------------------------------------ --------------------------------------------
Acquisition costs                        -340.3       -0.7    - -1.3   -342.3      -340.7         0.3      -  -2.1   -342.5
------------------------------------ ----------------------------------------- --------------------------------------------
Other operating and administration
 expenses                                -112.8          -    -    -   -112.8      -127.9           -      -     -   -127.9
------------------------------------------------------------------------------ --------------------------------------------
Interest expense                          -17.5          -    -    -    -17.5       -16.1           -      -     -    -16.1
------------------------------------ ----------------------------------------- --------------------------------------------
Amortization of goodwill                   -6.2          -    -    -     -6.2        -6.2           -      -     -     -6.2
------------------------------------ ----------------------------------------- --------------------------------------------
Total benefits, losses and expenses    -1,615.5       -1.3    - -1.3 -1,618.1    -1,408.2         0.8      -  -2.1 -1,409.5
------------------------------------------------------------------------------ --------------------------------------------
Income before taxes                        98.4        0.7    - -0.1     99.0       178.3         0.8      -     -    179.1
------------------------------------ ----------------------------------------- --------------------------------------------
Income tax expense                        -40.6       -0.3    -    -    -40.9       -62.0        -0.3      -     -    -62.3
------------------------------------ ----------------------------------------- --------------------------------------------
Net income                                 57.8        0.4    - -0.1     58.1       116.3         0.5      -     -    116.8
------------------------------------ ----------------------------------------- --------------------------------------------



                                                                               4







Condensed Consolidated balance sheets
(US$ million)
                                          2004                                        2003
                                    As                                          As
                                previously Reinsurance Taxes Other    As      previously Reinsurance Taxes  Other    As
                                reported   transactions      Items  restated  reported   transactions       Items restated
                                ----------------------------------------------------------------------------------------
Assets
Invested assets
Held-to-maturity securities:
                                                                                                      
Fixed maturities                     850.4          -     -     -    850.4       500.4          -     -      -    500.4
------------------------------- ------------------------------------------- --------------------------------------------
Available-for-sale securities:
Fixed maturities                   4,834.8          -     -     -  4,834.8     4,428.2          -     -      -  4,428.2
------------------------------- ------------------------------------------- --------------------------------------------
Equity securities                    399.4          -     -     -    399.4       840.2          -     -   -5.3    834.9
------------------------------- ------------------------------------------- --------------------------------------------
Other investments                    281.4          -     -  -2.2    279.2       173.5          -     -  -21.3    152.2
------------------------------- ------------------------------------------- --------------------------------------------
Short-term investments               117.3          -     -     -    117.3        55.8          -     -   -0.1     55.7
------------------------------- ------------------------------------------- --------------------------------------------
Total investments                  6,483.3          -     -  -2.2  6,481.1     5,998.1          -     -  -26.7  5,971.4
------------------------------- ------------------------------------------- --------------------------------------------
Funds Withheld Asset               1,305.1          -     -     -  1,305.1     1,530.6          -     -      -  1,530.6
------------------------------- ------------------------------------------- --------------------------------------------
Total invested assets              7,788.4          -     -  -2.2  7,786.2     7,528.7          -     -  -26.7  7,502.0
------------------------------- ------------------------------------------- --------------------------------------------

Other assets
Cash and cash equivalents            680.9          -     -     -    680.9       280.8          -     -      -    280.8
------------------------------- ------------------------------------------- --------------------------------------------
Premiums receivable                1,812.0        8.8     -  11.4  1,832.2     2,008.3      -72.2     - -282.0  1,654.1
Reserves for unearned premiums,
 retro                               111.6      -72.1     -  15.7     55.2           -      -88.8     -  198.1    109.3
--------------------------------------------------------------------------- --------------------------------------------
Reinsurance assets:
Underwriting reserves              1,226.2     -357.1     -  68.8    937.9     1,718.6     -472.5     - -152.0  1,094.1
------------------------------- ------------------------------------------- --------------------------------------------
Insurance and reinsurance
 balances receivable                 233.5      -94.2     -   0.0    139.3       224.0     -183.2     -      -     40.8
--------------------------------------------------------------------------- --------------------------------------------
Funds held by reinsureds           1,721.3      -78.9     -  95.3  1,737.7     1,374.0     -121.2     -   42.1  1,294.9
------------------------------- ------------------------------------------- --------------------------------------------
Deposit assets                       137.0       33.4     -     -    170.4           -       58.8     -      -     58.8
------------------------------- ------------------------------------------- --------------------------------------------
Deferred policy acquisition
 costs                               484.7       -0.8     -  -1.2    482.7       380.1       -0.8     -      -    379.3
------------------------------- ------------------------------------------- --------------------------------------------
Deferred income taxes                 78.3      -67.2  61.6   7.1     79.8       345.1       21.2  -5.8    4.2    364.7
------------------------------- ------------------------------------------- --------------------------------------------
Other assets                         335.4      -35.1  58.2   0.1    358.6       495.0      -39.8     -   46.4    501.6
------------------------------- ------------------------------------------- --------------------------------------------
Total assets                      14,609.3     -663.2 119.8 195.0 14,260.9    14,354.6     -898.5  -5.8 -169.9 13,280.4
------------------------------- ------------------------------------------- --------------------------------------------

Liabilities and shareholders'
 equity
Liabilities
Reinsurance liabilities
Unpaid losses and loss expenses    8,915.6     -115.2     - 107.9  8,908.3     7,842.8     -127.8     -  164.7  7,879.7
------------------------------- ------------------------------------------- --------------------------------------------
Reserves for life benefits,
 gross                               407.1          -     -     -    407.1       483.5          -     - -139.2    344.3
------------------------------- ------------------------------------------- --------------------------------------------
Insurance and reinsurance
 balances payable                    585.9          -     -  -2.4    583.5           -     -108.8     -  313.4    204.6
--------------------------------------------------------------------------- --------------------------------------------
Reserves for unearned premiums,
 gross                             1,312.3      -80.4     -  15.8  1,247.7     1,467.4      -73.5     -   21.1  1,415.0
--------------------------------------------------------------------------- --------------------------------------------
Other reinsurance liabilities        110.4      -57.0     -  17.4     70.8     1,087.3      -73.1     - -910.0    104.2
------------------------------- ------------------------------------------- --------------------------------------------
Funds held under reinsurance
 contracts                           379.3     -237.8     -  53.3    194.8       529.8     -399.0     -   42.1    172.9
--------------------------------------------------------------------------- --------------------------------------------
Deposit liabilities                  348.5        8.0     -     -    356.5           -       22.4     -  335.8    358.2
------------------------------- ------------------------------------------- --------------------------------------------
Deferred income taxes                157.2      -69.7  -6.8   1.1     81.8       158.3        1.6  14.3      -    174.2
------------------------------- ------------------------------------------- --------------------------------------------
Accrued expenses and other
 liabilities                         281.7          -     -   2.8    284.5       311.6       -2.9     -   -2.5    306.2
--------------------------------------------------------------------------- --------------------------------------------
Debt                                 391.1          -     -     -    391.1       390.6          -     -    2.5    393.1
------------------------------- ------------------------------------------- --------------------------------------------
Total liabilities                 12,889.1     -552.1  -6.8 195.9 12,526.1    12,271.3     -761.1  14.3 -172.1 11,352.4
------------------------------- ------------------------------------------- --------------------------------------------

Shareholders' equity
Common stock                         554.9          -     -     -    554.9       253.0          -     -      -    253.0
------------------------------- ------------------------------------------- --------------------------------------------
Additional paid-in capital         1,430.6          -     - -70.1  1,360.5     1,326.7          -     -  -70.1  1,256.6
------------------------------- ------------------------------------------- --------------------------------------------
Treasury stock                        -7.7          -     -     -     -7.7       -10.0          -     -      -    -10.0
------------------------------- ------------------------------------------- --------------------------------------------
Unearned stock compensation           -7.5          -     -     -     -7.5        -6.1          -     -      -     -6.1
------------------------------- ------------------------------------------- --------------------------------------------
Total accumulated other comprehensive income:
Accumulated other comprehensive
 income                               -6.7          -  -1.0     -     -7.7           -          -     -   -1.2     -1.2
--------------------------------------------------------------------------- --------------------------------------------
Net unrealized gains on
 investments, net of taxes           116.7          - -11.7   0.2    105.2       145.3          -   0.3      -    145.6
--------------------------------------------------------------------------- --------------------------------------------
Cumulative translation
 adjustments                         194.1       -7.9   5.3  -0.3    191.2       116.1       -5.1  -2.1    1.1    110.0
--------------------------------------------------------------------------- --------------------------------------------
Total accumulated other
 comprehensive income                304.1       -7.9  -7.4  -0.1    288.7       261.4       -5.1  -1.8   -0.1    254.4
--------------------------------------------------------------------------- --------------------------------------------
Retained (deficit) earnings         -554.2     -103.2 134.0  69.3   -454.1       258.3     -132.3 -18.3   72.4    180.1
------------------------------- ------------------------------------------- --------------------------------------------
Total shareholders' equity         1,720.2     -111.1 126.6  -0.9  1,734.8     2,083.3     -137.4 -20.1    2.2  1,928.0
------------------------------- ------------------------------------------- --------------------------------------------

------------------------------- ------------------------------------------- --------------------------------------------
Total liabilities and
 shareholders' equity             14,609.3     -663.2 119.8 195.0 14,260.9    14,354.6     -898.5  -5.8 -169.9 13,280.4
--------------------------------------------------------------------------- --------------------------------------------



Note:  The "As  previously  reported"  figures at December 31, 2004 in the table
above,  reflect the balances reported for the December 31, 2004 balance sheet in
the 2Q 2005 6-K.


                                                                               5





Condensed Consolidated balance sheets
(US$ million)
                                                  2002                                         2001
                                     As                                           As
                                 previously Reinsurance Taxes  Other    As      previously Reinsurance Taxes Other    As
                                 reported   transactions       Items  restated  reported   transactions      Items restated
                                 ---------------------------------------------------------------------------------------
                                                                                                    
Assets
Invested assets
Held-to-maturity securities:
Fixed maturities                          -          -     -      -        -           -          -    -      -       -
-------------------------------- -------------------------------------------- ------------------------------------------
Available-for-sale securities:
Fixed maturities                    3,443.1          -     -      -  3,443.1     2,331.4          -    -      - 2,331.4
-------------------------------- -------------------------------------------- ------------------------------------------
Equity securities                     530.8          -     -   -5.4    525.4       701.4          -    -  -63.3   638.1
-------------------------------- -------------------------------------------- ------------------------------------------
Other investments                     177.3          -     -    5.4    182.7       195.1          -    -   63.5   258.6
-------------------------------- -------------------------------------------- ------------------------------------------
Short-term investments                318.0          -     -      -    318.0        89.5          -    -  -24.0    65.5
-------------------------------- -------------------------------------------- ------------------------------------------
Total investments                   4,469.2          -     -      -  4,469.2     3,317.4          -    -  -23.8 3,293.6
-------------------------------- -------------------------------------------- ------------------------------------------
Funds Withheld Asset                1,648.1          -     -      -  1,648.1     1,598.5          -    -      - 1,598.5
-------------------------------- -------------------------------------------- ------------------------------------------
Total invested assets               6,117.3          -     -      -  6,117.3     4,915.9          -    -  -23.8 4,892.1
-------------------------------- -------------------------------------------- ------------------------------------------

Other assets
Cash and cash equivalents             361.5          -     -   39.7    401.2       420.5          -    -   49.7   470.2
-------------------------------- -------------------------------------------- ------------------------------------------
Premiums receivable                 1,721.3      -46.6     - -584.0  1,090.7     1,015.1      -14.6    - -303.0   697.5
Reserves for unearned premiums,
 retro                                    -      -70.8     -   94.7     23.9           -      -55.0    -   78.9    23.9
----------------------------------------------------------------------------- ------------------------------------------
Reinsurance assets:
Underwriting reserves               1,627.7     -423.0     -  -95.7  1,109.0     1,668.1     -445.8    -  -78.9 1,143.4
-------------------------------- -------------------------------------------- ------------------------------------------
Insurance and reinsurance
 balances receivable                  239.9     -142.8     -   -5.0     92.1       400.2     -104.3    -      -   295.9
----------------------------------------------------------------------------- ------------------------------------------
Funds held by reinsureds              935.9      -76.4     -      -    859.5       523.4      -40.2    -  -28.4   454.8
-------------------------------- -------------------------------------------- ------------------------------------------
Deposit assets                            -       45.7     -      -     45.7           -       52.6    -      -    52.6
-------------------------------- -------------------------------------------- ------------------------------------------
Deferred policy acquisition
 costs                                264.9       -0.9     -      -    264.0       217.9       -1.0    -      -   216.9
-------------------------------- -------------------------------------------- ------------------------------------------
Deferred income taxes                 391.8       28.8 -31.4    0.7    389.9       300.4       37.1  3.3      -   340.8
-------------------------------- -------------------------------------------- ------------------------------------------
Other assets                          390.7      -60.2     -   33.7    364.2       245.0          -    -   29.0   274.0
-------------------------------- -------------------------------------------- ------------------------------------------
Total assets                       12,051.0     -746.2 -31.4 -515.9 10,757.5     9,706.5     -571.2  3.3 -276.5 8,862.1
-------------------------------- -------------------------------------------- ------------------------------------------

Liabilities and shareholders'
 equity
Liabilities
Reinsurance liabilities
Unpaid losses and loss expenses     6,821.3     -130.0     -  185.6  6,876.9     5,710.5      -68.2    -      - 5,642.3
-------------------------------- -------------------------------------------- ------------------------------------------
Reserves for life benefits,
 gross                                371.7          -     - -185.6    186.1       252.0          -    -    8.3   260.3
-------------------------------- -------------------------------------------- ------------------------------------------
Insurance and reinsurance
 balances payable                         -      -96.7     -   20.4    -76.3           -      -12.7    -  -18.6   -31.3
----------------------------------------------------------------------------- ------------------------------------------
Reserves for unearned premiums,
 gross                              1,170.7      -61.5     -      -  1,109.2       968.7      -48.2    -      -   920.5
----------------------------------------------------------------------------- ------------------------------------------
Other reinsurance liabilities         661.6      -60.8     - -527.7     73.1       315.9      -92.2    - -227.5    -3.8
-------------------------------- -------------------------------------------- ------------------------------------------
Funds held under reinsurance
 contracts                            429.5     -351.5     -      -     78.0       430.8     -333.9    -  -28.4    68.5
----------------------------------------------------------------------------- ------------------------------------------
Deposit liabilities                       -       58.1     -      -     58.1           -       47.6    -      -    47.6
-------------------------------- -------------------------------------------- ------------------------------------------
Deferred income taxes                 133.9       -1.0   0.1      -    133.0       106.5        9.8    -      -   116.3
-------------------------------- -------------------------------------------- ------------------------------------------
Accrued expenses and other
 liabilities                          333.9          -     -   -2.6    331.3       154.3          -    -  -19.5   134.8
----------------------------------------------------------------------------- ------------------------------------------
Debt                                  390.4          -     -    2.5    392.9       197.0          -    -    9.1   206.1
-------------------------------- -------------------------------------------- ------------------------------------------
Total liabilities                  10,313.0     -643.4   0.1 -507.4  9,162.3     8,135.7     -497.8    - -276.6 7,361.3
-------------------------------- -------------------------------------------- ------------------------------------------

Shareholders' equity
Common stock                          253.0          -     -      -    253.0       253.0          -    -      -   253.0
-------------------------------- -------------------------------------------- ------------------------------------------
Additional paid-in capital          1,330.9          -     -  -70.1  1,260.8     1,336.5          -    -  -70.1 1,266.4
-------------------------------- -------------------------------------------- ------------------------------------------
Treasury stock                         -3.3          -     -      -     -3.3           -          -    -      -       -
-------------------------------- -------------------------------------------- ------------------------------------------
Unearned stock compensation           -10.0          -     -      -    -10.0       -27.1          -    -      -   -27.1
-------------------------------- -------------------------------------------- ------------------------------------------
Total accumulated other comprehensive income:
Accumulated other comprehensive
 income                                   -          -     -      -        -           -          -    -      -       -
----------------------------------------------------------------------------- ------------------------------------------
Net unrealized gains on
 investments, net of taxes            -53.3          -     -   50.3     -3.0        30.3          -    -  -19.0    11.3
----------------------------------------------------------------------------- ------------------------------------------
Cumulative translation
 adjustments                          113.9       -1.7     -  -50.3     61.9       -21.9          -    -   19.1    -2.8
----------------------------------------------------------------------------- ------------------------------------------
Total accumulated other
 comprehensive income                  60.6       -1.7     -   -0.0     58.9         8.4          -    -    0.1     8.5
----------------------------------------------------------------------------- ------------------------------------------
Retained earnings (deficit)           106.8     -101.1 -31.5   61.6     35.8           -      -73.4  3.3   70.1       -
-------------------------------- -------------------------------------------- ------------------------------------------
Total shareholders' equity          1,738.0     -102.8 -31.5   -8.5  1,595.2     1,570.8      -73.4  3.3    0.1 1,500.8
-------------------------------- -------------------------------------------- ------------------------------------------

-------------------------------- -------------------------------------------- ------------------------------------------
Total liabilities and
 shareholders' equity              12,051.0     -746.2 -31.4 -515.9 10,757.5     9,706.5     -571.2  3.3 -276.5 8,862.1
----------------------------------------------------------------------------- ------------------------------------------




                                                                               6





Historical combined balance sheets
(US$ million)
                                                        2000                                     1999
                                           As                                       As
                                       previously Reinsurance Taxes Other   As     previously Reinsurance TaxesOther   As
                                       reported   transactions      Items restated  reported  transactions     Items restated
                                       ---------------------------------------------------------------------------------
                                                                                                    
Assets
Invested assets
Held-to-maturity securities:
Fixed maturities                                -          -    -    -       -           -          -    -    -       -
-------------------------------------- ---------------------------------------- ----------------------------------------
Available-for-sale securities:
Fixed maturities                          2,236.2          -    -    - 2,236.2     2,098.9          -    -    - 2,098.9
-------------------------------------- ---------------------------------------- ----------------------------------------
Equity securities                           611.0          -    -    -   611.0       557.3          -    -    -   557.3
-------------------------------------- ---------------------------------------- ----------------------------------------
Other investments                            52.2          -    -    -    52.2        80.1          -    -    -    80.1
-------------------------------------- ---------------------------------------- ----------------------------------------
Short-term investments                      115.1          -    -    -   115.1        83.8          -    -    -    83.8
-------------------------------------- ---------------------------------------- ----------------------------------------
Total investments                         3,014.5          -    -    - 3,014.5     2,820.1          -    -    - 2,820.1
-------------------------------------- ---------------------------------------- ----------------------------------------
Funds Withheld Asset                      1,335.2          -    -    - 1,335.2     1,412.7          -    -    - 1,412.7
-------------------------------------- ---------------------------------------- ----------------------------------------
Total invested assets                     4,349.7          -    -    - 4,349.7     4,232.8          -    -    - 4,232.8
-------------------------------------- ---------------------------------------- ----------------------------------------

Other assets
Cash and cash equivalents                   121.9          -    -    -   121.9        68.1          -    -    -    68.1
-------------------------------------- ---------------------------------------- ----------------------------------------
Premiums receivable                         937.3        0.3    -    -   937.6       590.3       -0.1    -    -   590.2
Reserves for unearned premiums, retro           -      -44.3    -    -   -44.3           -      -18.2    -    -   -18.2
------------------------------------------------------------------------------- ----------------------------------------
Reinsurance assets:
Underwriting reserves                     1,292.9     -319.9    -    -   973.0       772.2      -64.0    -    -   708.2
-------------------------------------- ---------------------------------------- ----------------------------------------
Insurance and reinsurance balances
 receivable                                 341.6      -53.8    -    -   287.8       247.4          -    -    -   247.4
------------------------------------------------------------------------------- ----------------------------------------
Funds held by reinsureds                    681.8          -    -    -   681.8       484.8          -    -    -   484.8
-------------------------------------- ---------------------------------------- ----------------------------------------
Deposit assets                                  -       85.1    -    -    85.1           -       57.7    -    -    57.7
-------------------------------------- ---------------------------------------- ----------------------------------------
Deferred policy acquisition costs           184.6        2.2    -    -   186.8       168.6       -1.1    -    -   167.5
-------------------------------------- ---------------------------------------- ----------------------------------------
Deferred income taxes                       165.2       27.2    -    -   192.4       131.4        0.1    -    -   131.5
-------------------------------------- ---------------------------------------- ----------------------------------------
Other assets                                246.3        0.2    - -0.1   246.4       220.4        0.6    - -0.1   220.9
-------------------------------------- ---------------------------------------- ----------------------------------------
Total assets                              8,321.3     -303.0    - -0.1 8,018.2     6,916.0      -25.0    - -0.1 6,890.9
-------------------------------------- ---------------------------------------- ----------------------------------------

Liabilities and shareholders' equity
Liabilities
Reinsurance liabilities
Unpaid losses and loss expenses           4,546.0      -41.9    -    - 4,504.1     3,545.7      -63.4    -    - 3,482.3
-------------------------------------- ---------------------------------------- ----------------------------------------
Reserves for life benefits, gross           162.0          -    -    -   162.0       193.7          -    -    -   193.7
-------------------------------------- ---------------------------------------- ----------------------------------------
Insurance and reinsurance balances
 payable                                        -          -    -    -       -           -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Reserves for unearned premiums, gross       774.4      -54.2    -    -   720.2       629.7      -19.7    -    -   610.0
------------------------------------------------------------------------------- ----------------------------------------
Other reinsurance liabilities               491.8      -65.4    -    -   426.4       356.6       -3.2    -    -   353.4
-------------------------------------- ---------------------------------------- ----------------------------------------
Funds held under reinsurance contracts      512.4     -127.2    -    -   385.2       323.2          -    -    -   323.2
------------------------------------------------------------------------------- ----------------------------------------
Deposit liabilities                             -       58.4    -    -    58.4           -       59.8    -    -    59.8
-------------------------------------- ---------------------------------------- ----------------------------------------
Deferred income taxes                       175.2       -1.6  9.6    -   183.2       157.0       -0.4    -    -   156.6
-------------------------------------- ---------------------------------------- ----------------------------------------
Accrued expenses and other liabilities      374.2        1.2    -    -   375.4       291.9        1.0    -    -   292.9
------------------------------------------------------------------------------- ----------------------------------------
Debt                                        196.9          -    -    -   196.9       196.8          -    -    -   196.8
-------------------------------------- ---------------------------------------- ----------------------------------------
Total liabilities                         7,232.9     -230.7  9.6    - 7,011.8     5,694.6      -25.9    -    - 5,668.7
-------------------------------------- ---------------------------------------- ----------------------------------------

Shareholders' equity
Common stock                                    -          -    -    -       -           -          -    -    -       -
-------------------------------------- ---------------------------------------- ----------------------------------------
Additional paid-in capital                      -          -    -    -       -           -          -    -    -       -
-------------------------------------- ---------------------------------------- ----------------------------------------
Treasury stock                                  -          -    -    -       -           -          -    -    -       -
-------------------------------------- ---------------------------------------- ----------------------------------------
Unearned stock compensation                     -          -    -    -       -           -          -    -    -       -
-------------------------------------- ---------------------------------------- ----------------------------------------
Total accumulated other comprehensive income:
Accumulated other comprehensive income          -          -    -    -       -           -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Net unrealized gains on investments,
 net of taxes                                18.8          -    -    -    18.8        16.9          -    -    -    16.9
------------------------------------------------------------------------------- ----------------------------------------
Cumulative translation adjustments           40.5          -    -    -    40.5        52.1          -    -    -    52.1
------------------------------------------------------------------------------- ----------------------------------------
Total accumulated other comprehensive
 income                                      59.3          -    -    -    59.3        69.0          -    -    -    69.0
------------------------------------------------------------------------------- ----------------------------------------
Retained earnings (deficit)               1,029.1      -72.3 -9.6 -0.1   947.1     1,152.4        0.9    - -0.1 1,153.2
-------------------------------------- ---------------------------------------- ----------------------------------------
Total shareholders' equity                1,088.4      -72.3 -9.6 -0.1 1,006.4     1,221.4        0.9    - -0.1 1,222.2
-------------------------------------- ---------------------------------------- ----------------------------------------

-------------------------------------- ---------------------------------------- ----------------------------------------
Total liabilities and shareholders'
 equity                                   8,321.3     -303.0    - -0.1 8,018.2     6,916.0      -25.0    - -0.1 6,890.9
------------------------------------------------------------------------------- ----------------------------------------








                                                                               7






Historical combined balance sheets
(US$ million)
                                                                                                1998
                                                                                    As
                                                                                previously Reinsurance Taxes Other   As
                                                                                reported   transactions      Items restated
                                                                                ----------------------------------------
                                                                                                          
Assets
Invested assets
Held-to-maturity securities:
Fixed maturities                                                                         -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Available-for-sale securities:
Fixed maturities                                                                   1,919.2          -    -    - 1,919.2
------------------------------------------------------------------------------- ----------------------------------------
Equity securities                                                                    487.3          -    -    -   487.3
------------------------------------------------------------------------------- ----------------------------------------
Other investments                                                                    116.7          -    -    -   116.7
------------------------------------------------------------------------------- ----------------------------------------
Short-term investments                                                               115.1          -    -    -   115.1
------------------------------------------------------------------------------- ----------------------------------------
Total investments                                                                  2,638.3          -    -    - 2,638.3
------------------------------------------------------------------------------- ----------------------------------------
Funds Withheld Asset                                                               1,259.8          -    -    - 1,259.8
------------------------------------------------------------------------------- ----------------------------------------
Total invested assets                                                              3,898.1          -    -    - 3,898.1
------------------------------------------------------------------------------- ----------------------------------------

Other assets
Cash and cash equivalents                                                            286.1          -    -    -   286.1
------------------------------------------------------------------------------- ----------------------------------------
Premiums receivable                                                                  520.1       -0.4    -    -   519.7
Reserves for unearned premiums, retro                                                    -       -4.4    -    -    -4.4
------------------------------------------------------------------------------------------------------------------------
Reinsurance assets:
Underwriting reserves                                                                499.0          -    -    -   499.0
------------------------------------------------------------------------------- ----------------------------------------
Insurance and reinsurance balances receivable                                        164.8          -    -    -   164.8
------------------------------------------------------------------------------------------------------------------------
Funds held by reinsureds                                                             436.0          -    -    -   436.0
------------------------------------------------------------------------------- ----------------------------------------
Deposit assets                                                                           -       66.8    -    -    66.8
------------------------------------------------------------------------------- ----------------------------------------
Deferred policy acquisition costs                                                    118.3       -1.0    -    -   117.3
------------------------------------------------------------------------------- ----------------------------------------
Deferred income taxes                                                                109.3       -0.1    -    -   109.2
------------------------------------------------------------------------------- ----------------------------------------
Other assets                                                                         259.2          -    -    -   259.2
------------------------------------------------------------------------------- ----------------------------------------
Total assets                                                                       6,290.9       60.9    -    - 6,351.8
------------------------------------------------------------------------------- ----------------------------------------

Liabilities and shareholders' equity
Liabilities
Reinsurance liabilities
Unpaid losses and loss expenses                                                    2,988.1       -0.5    -    - 2,987.6
------------------------------------------------------------------------------- ----------------------------------------
Reserves for life benefits, gross                                                    312.7          -    -    -   312.7
------------------------------------------------------------------------------- ----------------------------------------
Insurance and reinsurance balances payable                                               -          -    -    -       -
------------------------------------------------------------------------------------------------------------------------
Reserves for unearned premiums, gross                                                450.1       -4.9    -    -   445.2
------------------------------------------------------------------------------------------------------------------------
Other reinsurance liabilities                                                        353.2       -3.1    -    -   350.1
------------------------------------------------------------------------------- ----------------------------------------
Funds held under reinsurance contracts                                               305.8          -    -    -   305.8
------------------------------------------------------------------------------------------------------------------------
Deposit liabilities                                                                      -       68.7    -    -    68.7
------------------------------------------------------------------------------- ----------------------------------------
Deferred income taxes                                                                185.6       -0.3    -    -   185.3
------------------------------------------------------------------------------- ----------------------------------------
Accrued expenses and other liabilities                                               268.4        0.5    -    -   268.9
------------------------------------------------------------------------------------------------------------------------
Debt                                                                                 196.7          -    -    -   196.7
------------------------------------------------------------------------------- ----------------------------------------
Total liabilities                                                                  5,060.6       60.4    -    - 5,121.0
------------------------------------------------------------------------------- ----------------------------------------

Shareholders' equity
Common stock                                                                             -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Additional paid-in capital                                                               -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Treasury stock                                                                           -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Unearned stock compensation                                                              -          -    -    -       -
------------------------------------------------------------------------------- ----------------------------------------
Total accumulated other comprehensive income:
Accumulated other comprehensive income                                                   -          -    -    -       -
------------------------------------------------------------------------------------------------------------------------
Net unrealized gains on investments, net of taxes                                    100.2          -    -    -   100.2
------------------------------------------------------------------------------------------------------------------------
Cumulative translation adjustments                                                    16.7          -    -    -    16.7
------------------------------------------------------------------------------------------------------------------------
Total accumulated other comprehensive income                                         116.9          -    -    -   116.9
------------------------------------------------------------------------------------------------------------------------
Retained earnings                                                                  1,113.4        0.5    -    - 1,113.9
------------------------------------------------------------------------------- ----------------------------------------
Total shareholders' equity                                                         1,230.3        0.5    -    - 1,230.8
------------------------------------------------------------------------------- ----------------------------------------

------------------------------------------------------------------------------- ----------------------------------------
Total liabilities and shareholders' equity                                         6,290.9       60.9    -    - 6,351.8
------------------------------------------------------------------------------------------------------------------------



The table  below  shows the  impact of the  above  adjustments  on basic  (loss)
earnings per share for the years ended December 31, 2004 through 1998.




----------------------------------------------- ---------- --------- ----------- --------- --------- -------- --------
(US$)                                                2004      2003        2002      2001      2000     1999     1998
----------------------------------------------- ---------- --------- ----------- --------- --------- -------- --------
                                                                                           
Basic (loss) earnings per share as previously     (12.00)      2.33        1.34    (4.61)    (0.73)     1.46    2.93
reported
----------------------------------------------- ---------- --------- ----------- --------- --------- -------- --------
Adjustments to basic (loss) earnings per             2.81    (0.09)      (0.89)      0.15    (2.07)        -        -
share
----------------------------------------------- ---------- --------- ----------- --------- --------- -------- --------
Basic (loss) earnings per share as restated        (9.19)      2.24        0.45    (4.46)    (2.80)     1.46     2.93
----------------------------------------------- ---------- --------- ----------- --------- --------- -------- --------



See Note 25 to our  2004  consolidated  financial  statements  included  in Form
20-F/A for additional information on (loss) earnings per share.


                                                                               8




Details of the Restatement

The  Restatement  corrects  errors in the Company's  accounting  for assumed and
ceded  reinsurance  transactions,  its  accounting  for income taxes and certain
other items.  Some of the adjustments  relate to both the timing and recognition
of revenues and expenses and affect the comparison of period-to-period  results.
Although some of the restated items do not affect previously reported net income
or consolidated  shareholders'  equity, they do affect both the consolidated and
business segment reporting of certain line items within the income statement and
balance  sheet.  See  the  Schedule  of  Segment  Data  and  Note 7 to our  2004
consolidated  financial  statements  included in the Form 20-F/A for  additional
information  on  Converium's  business  segments as restated.  We have set forth
below,  a summary of the  impact of the  Restatement  on certain of  Converium's
consolidated  statement  of income and balance  sheet  accounts  affected by the
Restatement.


Overall impact of correction to the accounting  treatment of certain assumed and
ceded transactions

The effect of the correction to the accounting  treatment of certain assumed and
ceded  transactions on certain of Converium's  consolidated  statement of income
and balance sheet accounts is as follows:




------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
                                                                                            
Increase (decrease) for the years ended            2004      2003       2002      2001      2000      1999       1998
December 31,
(US$ million, except per share amounts)
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
Selected consolidated statement of income
accounts:
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Gross premiums written                          -17.2      -28.4    -163.3     -34.4     -18.7      -18.6      -6.1
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Net premiums written                             53.4       68.5     -86.9     170.1     184.7       -1.1      -1.2
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Net premiums earned                              77.4       64.1     -87.9     153.3     193.0       -0.1      -0.7
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Losses, loss expenses and life benefits         -44.7      -85.9       1.0    -160.1    -281.1       -0.6       0.5
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Acquisition costs                                 9.9      -16.6      23.9      -8.8     -27.2       -0.7       0.3
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Income (loss) before taxes                       46.1      -20.9     -30.2      -0.7    -101.4        0.7       0.8
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Net income (loss)                                29.0      -31.1     -27.7      -1.0     -73.2        0.4       0.5
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------

------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
Basic earnings (loss) per share (US$)                0.46      -0.39     -0.35     -0.01     -1.83       0.01      0.01
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------

------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
Increase (decrease) as of December 31,
(US$ million)
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------

------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
Selected consolidated balance sheet accounts:
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Reinsurance assets (including reserves for     -523.4     -744.5    -636.6    -605.1    -418.0      -82.2      -4.4
    unearned premium)
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Funds held by reinsureds                        -78.9     -121.2     -76.4     -40.2         -          -         -
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Other assets                                    -35.1      -39.8     -60.2         -       0.2        0.6         -
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Reinsurance liabilities (including             -195.6     -310.1    -288.2    -129.1     -96.1      -83.1      -5.4
    reserves for unearned premiums)
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Funds held under reinsurance contracts         -237.8     -399.0    -351.5    -333.9    -127.2          -         -
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------
    Shareholders' equity                           -111.1     -137.4    -102.8     -73.4     -72.3        0.9       0.5
------------------------------------------------ --------- ---------- --------- --------- --------- ---------- ---------




                                                                               9



Detailed  discussion  of the primary  transactions  or categories of assumed and
ceded transactions affected by the Restatement is provided below.

1. In 1998, Zurich  Reinsurance  (North America) Inc., now CRNA,  entered into a
series of transactions  comprised of two assumed contracts with MBIA - an excess
of loss contract (the "Excess  Contract") and a quota share contract (the "Quota
Share  Contract") - and a  retrocession  of  substantially  all of the liability
under these assumed contracts to third parties.

Based upon its consideration of the overall  transaction  economics and in light
of information revealed during the internal review, the Company determined that,
at inception, these transactions did not transfer sufficient risk to qualify for
reinsurance accounting.

Accordingly,  the Company has  corrected  the  accounting  treatment of both the
Excess  Contract  and the  Quota  Share  Contract,  as  well  as the  retroceded
contracts, from reinsurance to deposit accounting.

2. In late 2003,  the Company  entered into a Guaranteed  Minimum  Death Benefit
("GMDB") Stop Loss  Reinsurance  Agreement  ("the GMDB  Contract")  with a third
party which  provided  coverage of  $75,000,000 in excess of reserves for losses
arising out of GMDB  reinsurance  contracts bound or issued by the Company prior
to January 1, 2003. The GMDB Contract was accounted for as if it had transferred
sufficient risk to qualify for reinsurance  accounting treatment.  However, as a
result of a related ceded property catastrophe contract with the same party, and
a "master  profit  sharing  agreement"  with the same party  linking both of the
foregoing contracts, and certain other related transactions, the Company has now
determined that the initial risk transfer analysis did not include evaluation of
the entire arrangement  between the parties and that there are transactions that
involved  other parties and payments to the third  parties.  The Company has now
determined that at inception there was insufficient  risk transfer such that the
conditions  for  reinsurance  accounting  under  SFAS  113  had  not  been  met.
Accordingly,  the Company has  corrected  the  accounting  treatment of the GMDB
Contract and the property  catastrophe  agreement  from  reinsurance  to deposit
accounting.  Reinsurance  accounting  has been  retained for that portion of the
risk that was transferred to a separate third party.

The Company  entered into a Combined Excess of Loss  Reinsurance  Agreement (the
"CEL  Agreement")  with  another  third party,  effective  October 1, 2001 for a
three-month period and subsequently renewed the CEL Agreement for calendar years
2002,  2003 and 2004,  respectively.  In 2003,  coverage for GMDB  liability was
added to the CEL Agreement.  Based upon evidence from the internal  review,  the
Company  determined  that the initial  risk  transfer  analysis  did not include
evaluation  of the entire  arrangement  between  the parties and that there is a
likelihood that a side agreement was consummated. The Company has now determined
that at inception there was insufficient  risk transfer such that the conditions
for reinsurance  accounting  under SFAS 113 had not been met.  Accordingly,  the
Company has  corrected the  accounting  treatment  for these  transactions  from
reinsurance to deposit accounting.

3. From at least 1998 on,  subsidiaries  of ZFS have  provided  and  continue to
provide  coverage  to CRNA,  including  stop-loss  coverage  relating  to losses
attributable  to the settlement of litigation with the Unicover Pool, 100% quota
share coverage of certain structured/finite risk contracts, and aggregate excess
of loss coverage in respect of CRNA's 2001 accident  year losses.  In turn,  the
subsidiaries  of ZFS have ceded a substantial  portion of these  liabilities  to
third  parties.  On a  stand-alone  basis,  CRNA has  accounted and continues to
account for its cession to ZFS subsidiaries as reinsurance accounting.  However,
as part of the transactions pursuant to which Converium was formed, Converium AG
accepted the financial  benefits and risks  (including  the risk that all or any
portion of the  reinsurance  would not be  recovered  from those third  parties)
relating to these ZFS  transactions.  Therefore,  in its consolidated  financial
statements,  Converium  has  accounted  for and  continues  to  account  for the
cessions by the  subsidiaries  of ZFS to third  parties as if the cessions  were
made directly from CRNA to the third parties.

Converium treated these retroceded  contracts as if they transferred  sufficient
risk to qualify for reinsurance  accounting.  However,  based on certain related
agreements involving those third parties,  documentation  concerning the overall
relationship  between  the  parties  and the  conduct of the  parties  after the
contracts  were  entered  into,  the Company  concluded  that the risk  transfer
analysis  did not  include  evaluation  of the entire  arrangement  between  the
parties,  including transactions that involved other parties and payments to the
third  parties.  Based upon  evidence  from the  internal  review,  the  Company
determined that the initial risk transfer analysis did not include evaluation of
the entire  arrangement  between  the  parties  and that  there is a  reasonable
possibility of side agreements. The Company has now determined that at inception
there was  insufficient  risk transfer such that the conditions for  reinsurance
accounting  under  SFAS 113 had not  been  met.  Accordingly,  the  Company  has
corrected the accounting treatment for these ceded transactions from reinsurance
to deposit  accounting.  Certain portions of these transactions that transferred
sufficient risk to qualify for reinsurance accounting have not been restated.


                                                                              10




4. Six transactions have been corrected because the Company has determined that,
at inception,  they  transferred  insufficient  risk to qualify for  reinsurance
accounting  and instead should be accounted for using deposit  accounting.  Some
are  transactions in which the Company  ultimately  reassumed from third parties
all or virtually  all of the  long-tailed  liability  that it had ceded to third
parties.  This subset of transactions  involved cessions to a Bermuda reinsurer,
9.0% of which was and is owned by Converium, or to another reinsurer not subject
to US GAAP  (and  thus  able to  account  for  estimated  ultimate  losses  on a
discounted  to present  value  basis.)  The  restatement  of these  transactions
eliminates the entire effect of the  reinsurance  accounting,  including  (where
applicable) the inherent discount related to the ceded loss reserves.

All but one of these  transactions  expired or were commuted  effective no later
than March 31, 2005, resulting in no impact on total shareholders' equity or net
income  thereafter  with  respect to those  expired or  commuted  contracts.  In
particular, certain of the contracts with the Bermuda reinsurer were commuted in
2004 and the first  quarter of 2005,  resulting in net losses being  reported in
those years, which are being reversed as a result of the Restatement. The impact
of these reversals on the previously  reported (loss) income before taxes is US$
40.0 million in 2005 and US$ 15.7 million in 2004.

5. Of the other  transactions  that the Company has restated,  (a) two ceded and
two assumed  transactions  appear to have involved  clerical  errors,  where the
Company  recognized  the  appropriate  accounting  treatment,  but  a  different
accounting  treatment  was  mistakenly  entered  into the  Company's  accounting
system;  and (b) two  involved  assumed  transactions  as to which  the  Company
previously  recognized that its original decision to use reinsurance  accounting
instead of deposit accounting was in error,  corrected the mistake in the period
in  which it was  identified,  but did not  adjust  the  prior  year  where  the
quantitative impact of the errors was immaterial.  Of the four transactions with
clerical errors,  one was a ceded transaction  where reinsurance  accounting was
used in error instead of deposit  accounting,  one was a ceded transaction where
prospective  reinsurance  accounting  was used in error  instead of  retroactive
reinsurance  accounting,  and two were assumed  transactions  where  prospective
reinsurance accounting was used in error instead of retroactive accounting.

All but one of these  transactions  expired or were commuted  effective no later
than March 31, 2005, resulting in no impact on total shareholders' equity or net
income thereafter, with respect to those expired or commuted transactions.


Income tax accounting restatements

For the years ended  December 31, 2004  through  2000,  the Company  incorrectly
calculated  deferred  income  taxes and the  respective  valuation  allowance to
certain deferred tax assets. These valuation allowances have been recomputed and
adjustments  of US$ 95.0 million and US$ 9.9 million have been  reflected in the
related income tax expense and deferred  income tax accounts for the years ended
December 31, 2004 and 2003, respectively. There was no impact in 2002.

In  addition,  for the year ended  December 31,  2004,  the Company  incorrectly
recorded a full  valuation  allowance on the deferred tax asset in the amount of
US$  58.2  million.   This  valuation  allowance  related  to  Converium's  U.S.
operations  arose from IRC Section 847,  Special  Estimated Tax Payments and was
reflected  in the  income  tax  expense,  deferred  income  tax assets and other
assets. IRC Section 847 provides a mechanism that assures recoverability for the
tax asset  (receivable)  arising from the  discounting  of property and casualty
loss  reserves for tax  purposes.  This  provision  allows a reinsurer to take a
special  income tax deduction in the United States equal to the discount on post
1986 accident year and loss expense  reserves while making  "special"  estimated
tax payments  equal to the amount of the tax benefit  derived from the "special"
deduction.  The special  estimated  tax payments  can be carried  forward for 15
years to offset taxes arising from decreases in the "special"  deduction and are
treated  as  regular  estimated  tax  payments  or  refunded  at the  end of the
carryforward period.

In 2003, Converium filed a refund request for prior years' special estimated tax
payments  covered  under IRC Section  847.  As a result of the claim,  Converium
reclassified  approximately US$ 58.2 million from deferred tax assets into other
assets. In 2004,  however,  the Internal Revenue Service denied the refund,  and
consequently,  Converium reversed the prior  reclassification  to current income
tax receivable.  Subsequently, for the year ended December 31, 2004, the Company
incorrectly  recorded a full  valuation  allowance  against its net deferred tax
asset,  which included the US$ 58.2 million  referred to above.  The Restatement
reverses the valuation  allowance  provided against the US$ 58.2 million as this
amount is expected to be recovered  through future deductions in tax payments or
future refund  requests.  The deferred tax asset has been  reclassified to other
assets.


                                                                              11




In addition, for its Australian  operations,  Converium did not provide deferred
taxes for its temporary differences in accordance with SFAS No. 109, "Accounting
for Income  Taxes"  ("SFAS  109").  The  restatement  corrects  its accounts and
results in an expense for the years ended  December 31,  2004,  2003 and 2002 of
US$ 4.4 million, US$ 3.1 million and nil, respectively.

The effect of the  Restatement  related to income tax  accounting  on certain of
Converium's  consolidated  statement of income and balance sheet  accounts is as
follows:




------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
                                                                                               
Increase (decrease) for the years ended December 31,            2004        2003       2002        2001       2000
 (US$ million, except per share amounts)
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------

------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
Selected consolidated statement of income accounts:
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
    Income taxes                                                 -152.2       -13.2       34.7       -12.8        9.6
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
    Net income (loss)                                             152.2        13.2      -34.7        12.8       -9.6
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------

------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
Basic earnings (loss) per share (US$)                              2.40        0.17      -0.44        0.16      -0.24
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------

------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
Increase (decrease) as of December 31,
(US$ million)
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------

------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
Selected consolidated balance sheet accounts:
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
    Other assets                                                   58.2           -          -           -          -
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
    Deferred income tax assets                                     61.6        -5.8      -31.4         3.3          -
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
    Deferred income tax liabilities                                -6.8        14.3          -           -        9.6
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------
    Shareholders' equity                                          126.6       -20.1      -31.5         3.3       -9.6
------------------------------------------------------------- ---------- ----------- ---------- ----------- ----------



Correction of other items

In the  Restatement,  Converium  corrected its financial  statements for certain
other items. A summary of the correction of these items is as follows:




---------------------------------------------------- ------------------------ --- ------------------------------------
Increase (decrease) for the years ended December 31,    Participation at
 (US$ million, except per share amounts)                     Lloyd's                       Other corrections
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
                                                                                                
                                                         2004        2003             2004         2003        2002
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------

---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
Selected consolidated statement of income accounts:
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
    Gross premiums written                                  155.0      104.9                 -            -         -
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
    Income (loss) before taxes                                3.2          -              -7.9          7.2      -9.3
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
    Net income (loss)                                         2.1          -              -5.0         10.7      -8.6
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------

---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
Basic earnings (loss) per share (US$)                        0.03          -             -0.08         0.13     -0.11
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------

---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
Increase (decrease) as of December 31,
(US$ million)
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------

---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------
Shareholders' equity                                          2.3          -              -3.2          2.2
---------------------------------------------------- ------------- ---------- --- ------------- ------------ ---------




                                                                              12




These corrections are comprised of the following items:

Participations at Lloyd's

o    Gross presentation of syndicate  transactions:  Converium participates as a
     member  of a number  of  syndicates  operating  in the  Lloyd's  of  London
     insurance market.  Converium has in prior financial statements reported its
     participations  in certain Lloyd's syndicate premium and loss activity on a
     net basis.  Subsequent  accounting  developments in the Lloyd's market have
     led  to  the  reporting  of  more  detailed  information  to  participants.
     Converium has corrected the previously reported amounts.
o    Reinsurance  to close:  Syndicates  at Lloyd's are formed for a duration of
     one  calendar  year.  Two  years  after  the  conclusion  of that  year the
     syndicate will typically transfer any remaining  liabilities to a successor
     syndicate by way of payment of a portfolio premium,  known as a reinsurance
     to close,  "RITC". In previously reported financial  statements,  Converium
     did  not  record  the  RITC in the  correct  reporting  period;  therefore,
     Converium has adjusted the recording of the RITC so that it is now reported
     in the proper period.
o    Miscellaneous corrections:  Corrections, which were originally concluded to
     be immaterial,  arising on the  accounting  for the Lloyd's  participations
     were  previously  reported in the  financial  statements in the period they
     were  identified.  Through the  Restatement,  Converium  is  recording  the
     adjustments made in previous periods in the proper period.


Other corrections

Other  corrections  were also recorded in connection with the  Restatement  that
include miscellaneous  immaterial items previously made in Converium's financial
statements  in the  periods  they  were  identified.  Through  the  Restatement,
Converium is recording these items in their proper periods.

In the second  quarter  of 2005,  Converium  refined  its chart of  accounts  to
enhance the  presentation  of the line items  within its  financial  statements,
which was disclosed at that time. As part of the Restatement,  Converium applied
the refined chart of accounts on its  financial  statements of prior years which
resulted in some adjustments  between certain line items within the consolidated
statements  of  income  and  balance  sheets.  The  most  significant  financial
statement  adjustments were in the line items premiums receivable,  underwriting
reserves,   reinsurance  liabilities,   other  reinsurance  liabilities  in  the
consolidated  balance  sheets and the losses,  loss  expenses and life  benefits
caption in the statements of income.  These  adjustments did not have any impact
on net income or shareholders' equity.


Additional paid-in capital

Included  in the  caption  "Other  items" is a decrease  to  additional  paid-in
capital of US$ 70.1 million. This adjustment relates to the cumulative effect of
all Restatement adjustments made to net income for the periods prior to December
31,  2001as  these  adjustments  reduced  the  net  assets  of  the  predecessor
businesses of Converium as contributed in the Formation Transactions.


Restated quarterly financial information

The tables  below show the  reconciliation  of the  previously  reported  income
statements and balance sheets to the restated versions as of and for each of the
quarters ended from March 31, 2003 through June 30, 2005.


                                                                              13




B) Financial information for the three and nine months ended September 30, 2005


Information  for the three and nine months ended September 30, 2005 was included
in the press  release of December 19, 2005.  The  additional  information  below
provides  segment and  comparative  financial  information  for the three months
ended September 30, 2005 and 2004, as well as on the nine months ended September
30, 2005 and 2004. All amounts included herein have been adjusted to reflect the
restatement.

Key metrics (US$ million, unless noted)




                                                             Three months                Nine months
                                                                ended                       ended
                                                         September 30, 2005*         September 30, 2005*
                                                                                       
o    Gross premiums written                                          482.6                   1,618.9
o    Net premiums written                                            432.4                   1,501.2
o    Net premiums earned                                             605.2                   1,941.7
o    Total investment result                                          70.5                     238.8
o    (Loss) income before taxes                                       -1.3                      45.5
o    Net (loss) income                                                -6.9                      34.5
o    Basic (loss) earnings per share                                 -0.05                      0.24
o    Annualized return on shareholders' equity                       -1.6%                      2.7%
o    Ongoing non-life loss ratio(1)                                  89.0%(2)                  79.5%(3)
o    Ongoing non-life underwriting expense ratio(4)                  17.3%(2)                  20.3%
o    Ongoing non-life administration expense ratio(5)                 5.8%(2)                   6.6%
o    Ongoing non-life combined ratio                                112.1%(2)                 106.4%(3)
o    Pre-tax operating income(6)                                      22.1                      98.0
o    Average annualized total investment income yield
     (pre-tax)                                                        3.6%                      4.0%



*    Reflects the effects of the restatement


---------------------
(1)  The ongoing non-life ratios exclude the Run-Off segment and the cost of the
     Corporate Center. As opposed to other reinsurers,  Converium calculates its
     non-life  administration expense ratio based on net premiums written rather
     than net premiums earned.  Using the alternative  methodology  based on net
     premiums earned would result in a non-life administration expense ratio for
     the third quarter of 4.1%.
(2)  Information  for the three months ended  September 30, 2005 was included in
     the press release of December 19, 2005. The ongoing non-life combined ratio
     and its component ratios for the three months ended September 30, 2005 have
     been updated since the December 19 press release to reflect the  completion
     of our  work on the  restatement.  The  figures  in the  December  19 press
     release  included  an  ongoing  non-life  loss  ratio of 89.7%,  an ongoing
     non-life   underwriting   expense  ratio  of  15.3%,  an  ongoing  non-life
     administration expense ratio of 5.9% and an ongoing non-life combined ratio
     of 110.9%.  Excluding the impact of the hurricanes and the European floods,
     the ongoing  non-life  combined ratio would have been 99.2%. In Converium's
     December 19 press release, this figure was 97.8%.
(3)  Information  for the nine months ended  September  30, 2005 was included in
     the press release of December 19, 2005. The ongoing non-life combined ratio
     and its component  loss ratio for the nine months ended  September 30, 2005
     have been  updated  since the  December  19 press  release to  reflect  the
     completion of our work on the  restatement.  The figures in the December 19
     press  release  included  an  ongoing  non-life  loss ratio of 79.6% and an
     ongoing non-life combined ratio of 106.5%.
(4)  Pre-tax  operating  income  (loss) is defined as income (loss) before taxes
     excluding  net realized  capital  (losses)  gains,  impairment of goodwill,
     amortization of intangible assets and restructuring costs.


                                                                              14




Converium  produces a close to  break-even  result for the third  quarter  and a
profit for the first nine months

For the third quarter of 2005, Converium reported a loss before taxes of US$ 1.3
million,  pre-tax operating income of US$ 22.1 million and a net loss of US$ 6.9
million as compared  with a loss before  taxes of US$ 104.8  million,  a pre-tax
operating  loss of US$ 120.9  million and a net loss of US$ 88.2  million in the
same period of 2004. The third quarter of 2005 was primarily  impacted by the US
hurricanes  and  European  floods in the  amount of US$ 74.2  million as well as
costs of US$ 9.5 million  associated  with our  organizational  and  operational
restructuring.  Offsetting  this was the positive impact of US$ 39.0 million due
to the commutations  primarily carried out in North America in the third quarter
of 2005 as well as net positive  development  of prior  years' loss  reserves as
discussed  below.  In  addition,  the  quarter  was  positively  impacted by the
reduction of  administration  expenses due to the realization of cost management
measures  adopted  early  in 2005 as well as by  solid  investment  results.  By
comparison,  the results for the three months ended  September 30, 2004 included
net  strengthening of prior years' loss reserves as discussed  below,  which was
partially offset by a strong investment  result,  including net realized capital
gains of US$ 20.3 million.

For the nine months ended September 30, 2005, the Company achieved income before
taxes of US$ 45.5 million,  pre-tax operating income of US$ 98.0 million and net
income of US$ 34.5  million,  as compared  with a loss before taxes of US$ 376.8
million,  a pre-tax  operating  loss of US$ 319.1  million and a net loss of US$
593.4 million for the same period of 2004.

The table below shows the  reconciliation  to pre-tax  operating  income for the
three and nine months ended September 30, 2005 and 2004:




                                            Three months ended September 30,   Nine months ended September 30,
                                              2005*                 2004            2005*             2004
                                                                Restated                          Restated
                                                                                         
Pre-tax operating income (loss)                22.1               -120.9             98.0           -319.1
Net realized capital (losses) gains            -6.4                 20.3             -8.1             42.0
Impairment of goodwill                                                 -                -            -94.0
Amortization of intangible assets              -7.5                 -0.8            -21.3             -2.3
Restructuring costs                            -9.5                 -3.4            -23.1             -3.4
(Loss) income before taxes                     -1.3               -104.8             45.5           -376.8



* Reflects the effects of the restatement

In addition to the aforementioned items, Converium's results for the nine months
ended  September 30, 2005 included the  recognition of a net pre-tax loss of US$
32.5 million related to winter storm Erwin,  which occurred in the first quarter
of 2005,  net positive  development  of prior years' loss  reserves as discussed
below,  and costs of US$ 23.1 million  associated  with our  organizational  and
operational restructuring (which included US$ 9.5 million from the third quarter
of 2005).  Converium's 2004 results were impacted by net  strengthening of prior
years' loss  reserves as discussed  below and an increase in income tax expenses
related to the  establishment of a valuation  allowance against the net deferred
income tax balances in North America and Switzerland,  as well as the impairment
of goodwill of US$ 94.0 million.

The decrease in gross premiums  written,  net premiums  written and net premiums
earned for the three and nine months ended  September 30, 2005 (by 53.6%,  55.9%
and  42.8%,  respectively  for  the  quarter  and by  54.3%,  55.3%  and  39.3%,
respectively  for the  nine-month  period as compared  with the same  periods of
2004) was in line with  expectations.  The  decrease  in premiums  reflects  the
reduction in business  volume caused by the  placement of Converium  Reinsurance
(North  America) Inc.  (CRNA) into orderly run-off in 2004 and the impact of the
ratings downgrades in the same year. Despite the decrease in premiums, Converium
recorded  significant  growth  in  gross  premiums  within  the  Life  &  Health
Reinsurance  segment of 16.4% as compared with the third  quarter of 2004.  This
expansion of business  reflects  increased  shares in existing  business and new
client  relationships  in Europe.  In addition,  Converium  was able to strongly
expand its European Agribusiness in the first nine months of 2005.

Overall,  Converium  continues to believe that its gross premiums written target
of approximately US$ 2.0 billion for the 2005 calendar year is achievable.

Converium's shareholders' equity amounted to US$ 1,697.3 million as of September
30, 2005 compared with US$ 1,734.8 million as of December 31, 2004. This decline
primarily  reflects a decrease in currency  translation  adjustments of US$ 86.6
million,  partially offset by net unrealized capital gains (net of taxes) of US$
11.6 million and net income of US$ 34.5 million.


                                                                              15




Noticeable impact of natural catastrophes

For the third  quarter of 2005,  the  non-life  combined  ratio for  Converium's
ongoing  operations  was 112.1%  (including an  administration  expense ratio of
5.8%).  For the nine months  ended  September  30,  2005,  the ongoing  non-life
combined ratio was 106.4% (including an administration expense ratio of 6.6%).

In the third  quarter  of 2005,  Converium's  ongoing  operations  recorded  net
pre-tax losses from Hurricane  Katrina,  Hurricane Rita,  Hurricanes  Dennis and
Emily,  and the European  floods of US$ 26.1  million,  US$ 10 million,  US$ 2.3
million  and  US$  24.4  million,  respectively.  Excluding  the  impact  of the
hurricanes and the European floods,  the ongoing  non-life  combined ratio would
have been 99.2% and 102.4% for the three and nine  months  ended  September  30,
2005, respectively. For Hurricane Katrina, an additional US$ 11.4 million of net
pre-tax losses were recorded in the Run-Off segment, so that overall net pre-tax
losses in the third  quarter of 2005 from  Hurricane  Katrina  totalled US$ 37.5
million.

Converium's  results for the nine months ended  September  30, 2005 also reflect
the net pre-tax  loss of US$ 32.5 million  related to winter storm Erwin,  which
affected  Northern  Europe in January  2005.  In the first nine  months of 2005,
Converium was also impacted by net  strengthening  of prior years' loss reserves
of US$ 22.1 million  relating to the  US/Caribbean  hurricanes  that occurred in
late 2004. This net strengthening is included in the development of prior years'
loss reserves discussed below.

Based on  preliminary  estimates  and as reported in the December 19, 2005 press
release,  Converium, at that time, expected its net pre-tax losses for Hurricane
Wilma,  which  occurred in the fourth quarter of 2005, to be in the range of US$
25.0 million to US$ 35.0 million. The Company has since updated its estimate for
Hurricane Wilma to a range of US$ 40.0 million to US$ 50.0 million.


Favorable loss reserve development in the third quarter of 2005

In the third quarter of 2005,  Converium  recorded net positive  development  of
prior years' loss  reserves of US$ 11.1  million(7),  which  contributed  to the
overall net positive development of US$ 5.3 million(5) for the nine months ended
September 30, 2005.  The Company  believes  that the continued  stability of its
aggregate prior years' loss reserve  position at the end of the third quarter of
2005 reflects the adequacy of prior reserving actions.

For the third  quarter of 2005,  net positive  development  of prior years' loss
reserves of US$ 23.7 million was recorded in the Company's  ongoing  operations.
For the three months ended  September 30, 2005, the  development of prior years'
loss  reserves  included  US$ 10.0 million of net  positive  development  in the
Standard  Property  &  Casualty  Reinsurance  segment,  resulting  from  the net
positive  development  of US$ 31.4 million within the property line of business,
partially  offset by net  strengthening  of US$ 12.5 million  within the general
third party liability line of business.  The Specialty Lines segment experienced
net  positive  development  of prior  years' loss  reserves of US$ 13.7  million
primarily  driven by net positive  development  of US$ 11.4  million  within the
aviation & space line of business. In addition,  the Run-Off segment experienced
US$ 12.6 million(5) of net strengthening of prior years' loss reserves.  For the
first  nine  months of 2005,  the  development  of prior  years'  loss  reserves
consisted  of net  positive  development  of US$ 11.5  million  in the  Standard
Property & Casualty  Reinsurance  segment and US$ 19.5 million in the  Specialty
Lines segment,  offset by net  strengthening  of US$ 25.7 million in the Run-Off
segment.

As a result of the reserve  volatility of old underwriting years and the adverse
loss-reporting trend that continued throughout the early part of 2004, Converium
recorded net  strengthening  of prior years' loss  reserves of US$ 126.1 million
for the three months ended September 30, 2004,  which resulted in an overall net
strengthening  of prior years' loss  reserves of US$ 556.4  million for the nine
months ended  September 30, 2004. The  development of prior years' loss reserves
for the three months ended September 30, 2004 included net reserve strengthening
of US$ 4.7 million in the Standard Property & Casualty  Reinsurance segment, US$
24.4 million in the Specialty  Lines segment and US$ 97.0 million in the Run-Off
segment. The development of prior years' loss reserves for the first nine months
of 2004  consisted  of net  reserve  strengthening  of US$ 12.6  million  in the
Standard  Property  &  Casualty  Reinsurance  segment,  US$ 55.3  million in the
Specialty Lines segment and US$ 488.5 million in the Run-Off segment.

---------------------
(5)  Updated from information included in the December 19, 2005 press release to
     reflect the completion of our work on the  restatement  as follows:  The US
     $11.1  million,  US$ 5.3  million,  US$ 12.5  million and US$ 12.6  million
     figures in today's  release were US$ 11.3 million,  US$ 15.0  million,  US$
     16.5 million and US$ 12.4  million,  respectively  in the December 19 press
     release.

                                                                              16




Although the restatement  discussed in the "Restatement of accounts"  section of
this press release did not result in changes to the reserve  amounts  determined
as a result of Converium's  process for  establishing  loss and loss  adjustment
expense  reserves,  it did result in  corrections  to the accounting for certain
assumed and ceded  transactions  and the reserve  amounts related  thereto.  The
resulting  changes  relate to  transactions  which at inception did not meet the
requirements for reinsurance  accounting.  The required changes reflected in the
restatement,  substantially  related  to ceded  reinsurance  transactions,  have
increased  the  additional  net  provisions  on prior years'  non-life  reserves
reported in the preceding  paragraph from US$ 111.6 million to US$ 126.1 million
and from US$ 542.4  million to US$ 556.4  million  for the three and nine months
ended September 30, 2004,  respectively.  The net  strengthening of prior years'
loss reserves  during 2004 reported in the preceding  paragraph  with respect to
the segments were also effected by the restatement.

CRNA run-off on track; commutations target to be exceeded

For the nine months ended  September  30, 2005,  CRNA's net loss  reserves  have
decreased by US$ 443.5 million to approximately  US$ 1.3 billion,  including the
effects of commutations and other  settlements of close to US$ 250 million.  The
commutations  resulted  in a positive  contribution  of US$ 39.0  million to net
income in the third quarter of 2005.

More than 90% of the commuted  liabilities  were  associated  with  volatile and
long-tail lines of business, such as general and special liability, professional
liability,  and workers' compensation.  In light of further commutations carried
out in the fourth quarter of 2005,  Converium will exceed its previously  stated
target of commuting or otherwise  settling CRNA liabilities of approximately US$
500 million for the full year 2005.


Progress in trimming cost base

In the third quarter of 2005, the  administration  expense ratio for the ongoing
non-life  business  (excluding  Corporate  Center segment costs) was 5.8%. Other
operating and  administration  expenses for the Company were US$ 40.3 million, a
decrease  of US$ 10.1  million or 20.0% as compared  with the second  quarter of
2005.

As expected,  the cost  management  measures  initiated in March 2005 have taken
effect in the third quarter of 2005. The Company reaffirms that it will continue
to incur certain  expenses  which it considers  crucial  investments in order to
expedite its rebound following the restoration of its financial strength ratings
and to accelerate the recovery of its market position. In addition,  the Company
is incurring  higher than  expected  expenses in  conjunction  with the internal
review  addressed  in the  first  part  of this  press  release  describing  the
restatement.


Solid investment result

In the third quarter of 2005,  Converium  generated a total investment result of
US$  70.5  million  or an  average  annualized  total  investment  income  yield
(pre-tax) of 3.6% as compared with a total investment result of US$ 97.8 million
or an average annualized total investment income yield (pre-tax) of 4.9% for the
same period of 2004.  Net investment  income  remained  relatively  flat for the
third  quarter  of 2005  and  2004 at US$ 76.9  million  and US$  77.5  million,
respectively.  Converium recorded net realized capital losses of US$ 6.4 million
for the three  months  ended  September  30, 2005 as compared  with net realized
capital  gains of US$ 20.3  million  for the same  period of 2004.  In the third
quarter of 2005,  Converium took an impairment charge of US$ 2.4 million related
to its  participation in SATEC. The Company also realized net capital losses and
impairments of US$ 4.0 million, primarily due to the liquidation of parts of the
fixed maturity  securities  portfolio in North America,  which resulted from the
restructuring  of  the  investment   portfolio  to  optimally   accommodate  the
commutation efforts.

For the nine  months  ended  September  30,  2005,  Converium  generated a total
investment result of US$ 238.8 million or an average annualized total investment
income  yield  (pre-tax) of 4.0% versus a total  investment  result of US$ 270.1
million or an average annualized total investment income yield (pre-tax) of 4.6%
for the same period of 2004. Net investment income was US$ 246.9 million for the
nine months ended  September 30, 2005 as compared with US$ 228.1 million for the
same period of 2004.  For the nine months  ended  September  30, 2005  Converium
recorded net  realized  capital  losses of US$ 8.1 million as compared  with net
realized  capital  gains  of US$  42.0  million  for the  same  period  of 2004,
inclusive of  impairment  charges of US$ 8.2 million and US$ 3.6 million for the
same respective periods.

The bulk of the net  realized  capital  losses  in 2005  occurred  in the  third
quarter (see above). In the first nine months of 2004,  Converium's net realized
capital  gains  were  mainly   attributable  to  the  sale  of  equity  security
investments  of  approximately  US$ 500  million to adjust the  Company's  asset
allocation to reduce investment risk.


                                                                              17




The average  annualized total investment  return (pre-tax) was 3.1% and 4.3% for
the three and nine months  ended  September  30, 2005 as compared  with 6.5% and
3.8% for the same periods of 2004.  In the second  quarter of 2005,  bond yields
decreased,  which led to significant  net unrealized  capital gains on the fixed
maturity  portfolio.  Increasing  bond yields in the first and third  quarter of
2005 had an offsetting impact.  Also, European equity markets performed strongly
in the first nine months of 2005,  which  resulted in additional  net unrealized
capital gains in the equity portfolio.


Business development

Standard  Property & Casualty  Reinsurance  reported a segment  loss of US$ 26.7
million for the three months ended  September 30, 2005 and segment income of US$
24.7  million  for the same  period of 2004,  respectively.  For the nine months
ended  September 30, 2005,  Standard  Property & Casualty  Reinsurance  reported
segment  income of US$ 22.7 million as compared  with US$ 120.9  million for the
same period of 2004, respectively.

For the third quarter of 2005, the segment result was primarily  attributable to
the  hurricanes  in the United  States with a total  impact of US$ 29.9  million
(Hurricane  Katrina:  US$  20.1  million,   Hurricane  Rita:  US$  7.5  million,
Hurricanes Dennis and Emily: US$ 2.3 million). In addition,  the European floods
in Switzerland,  Germany, Austria and Romania caused total net pre-tax losses of
US$ 24.4 million. The results for the first nine months ended September 30, 2005
also  reflect the impact of winter storm  Erwin,  which  resulted in net pre-tax
losses of US$ 32.5 million during the first quarter of 2005.

The result for the third quarter of 2005 was favorably  impacted by net positive
development of prior years' loss reserves of US$ 10.0 million, which resulted in
net positive  development  of prior years' loss reserves of US$ 11.5 million for
the nine months ended  September 30, 2005.  The net positive  development in the
third quarter of 2005 was primarily driven by the property line of business (US$
31.4 million) and partially  offset by the general third party liability line of
business (US$ 12.5  million).  In the third quarter of 2004,  US$ 4.6 million of
net strengthening of prior years' loss reserves was recorded,  which resulted in
net  strengthening  of US$ 12.5 million for the nine months ended  September 30,
2004.

The  combined  ratio for the third  quarter  of 2005 was  125.6%  (including  an
administration  expense ratio of 6.4%) and 108.7%  (including an  administration
expense ratio of 5.3%) for the nine months ended  September 30, 2005 as compared
with 102.7% and 96.6% for the same periods of 2004, respectively. The hurricanes
and the European floods impacted the segment's combined ratio by 24.5 percentage
points in the third quarter of 2005.

For the third quarter of 2005, gross premiums written  decreased by 46.4% to US$
173.3 million,  net premiums  written declined by 52.9% to US$ 139.8 million and
net premiums earned were down by 38.5% to US$ 221.4 million. For the nine months
ended September 30, 2005, gross premiums written decreased by 44.7% to US$ 711.0
million,  net premiums  written  declined by 45.4% to US$ 661.2  million and net
premiums earned were down by 36.0% to US$ 719.4 million.  Premiums  written were
adversely  impacted by the ratings downgrades in 2004. For the nine months ended
September  30,  2005,  the  reduction  in net  premiums  written in the Standard
Property & Casualty Reinsurance segment included (by line of business):

     o    Motor,  which  decreased  by 45.7% or US$ 177.2  million  to US$ 210.5
          million,  largely reflecting reduced writings in France and the United
          Kingdom   due  to   profitability   considerations   as  well  as  the
          cancellation of business because of the ratings downgrades in 2004;
     o    Property,  down by 33.6% or US$ 158.4  million  to US$ 312.9  million,
          primarily attributable to the ratings downgrades in 2004;
     o    General third party  liability,  which decreased by 60.7% or US$ 191.4
          million  to US$ 123.8  million,  partly  due to  revisions  to premium
          estimates on our London Market North  America and United  Kingdom book
          of business; and
     o    Personal  accident  assumed from non-life  insurers,  which recorded a
          reduction of 61.5% or US$ 22.4 million to US$ 14.0 million,  primarily
          as a result of the cancellation or non-renewal of business and reduced
          shares in current business due to the ratings downgrades in 2004.

Our underwriting expense ratio for the three and nine months ended September 30,
2005  decreased  due to the  receipt  of  Lloyd's  reinsurance  to close  (RITC)
premiums, on which there are no acquisition costs.


                                                                              18




Specialty  Lines  reported  segment  income for the three and nine months  ended
September  30, 2005 of US$ 28.6  million and US$ 76.9  million as compared  with
segment  income of US$ 8.9 million and US$ 34.5 million,  respectively,  for the
same periods of 2004.

For the third quarter of 2005, the segment result was negatively affected by US$
8.5 million from the Hurricanes Katrina and Rita in the United States, primarily
from the marine & energy line of business.

The positive segment results were primarily attributable to a solid underwriting
performance  supported by net positive development of prior years' loss reserves
of US$ 13.7 million in the third  quarter of 2005 (US$ 19.5 million for the nine
months ended September 30, 2005). US$ 11.4 million of this positive  development
were driven by the aviation line of business.  In the third quarter of 2004, US$
24.4 million of net  strengthening  of prior years' loss  reserves were recorded
(US$ 55.4 million for the nine months ended September 30, 2004).

For the third  quarter of 2005,  the  combined  ratio was 101.0%  (including  an
administration  expense ratio of 5.5%) and 104.8%  (including an  administration
expense ratio of 8.1%) for the nine months ended  September 30, 2005 as compared
with 109.5% and 107.5% for the same periods of 2004, respectively. The long-tail
Medical  Defence Union (MDU) business and the fronting  agreement for our Global
Aerospace  Underwriting  Managers Ltd.  (GAUM)  business make up 12.0 percentage
points of the  segment's  combined  ratio for the third  quarter  of 2005 or 7.8
percentage points for the nine months ended September 30, 2005.

For the third quarter of 2005, gross premiums written  decreased by 41.4% to US$
210.4 million,  net premiums  written declined by 41.1% to US$ 198.0 million and
net premiums earned decreased by 18.0% to US$ 264.8 million. For the nine months
ended September 30, 2005, gross premiums written decreased by 47.9% to US$ 593.6
million,  net premiums  written were down by 49.2% to US$ 542.0  million and net
premiums  earned  decreased by 13.6% to US$ 843.9 million.  Premium volumes were
adversely  impacted by the ratings downgrades in 2004. For the nine months ended
September 30, 2005, the reduction in net premiums  written in the Specialty Line
segment included (by line of business):

     o    Aviation & space, which decreased by 35.0% or US$ 101.5 million to US$
          188.2 million;
     o    Credit & surety,  which decreased by 68.1% or US$ 104.4 million to US$
          48.8 million;
     o    Professional  liability and other special liability,  down by 57.0% or
          US$ 227.5 million to US$ 171.5 million;
     o    Engineering,  which decreased by 59.3% or US$ 66.6 million to US$ 45.8
          million;
     o    Marine &  energy,  which  recorded  a  reduction  of 24.0% or US$ 16.7
          million to US$ 52.9 million; and
     o    Workers' compensation, which decreased by 79.2% or US$ 27.4 million to
          US$ 7.2 million.

These decreases were partially  offset by the growth in net premiums  written in
the  Agribusiness  line of business (by US$ 19.1  million to US$ 27.6  million),
primarily reflective of the decision to write this business out of Zurich and to
expand it in Europe.


Life & Health Reinsurance  reported segment income for the third quarter and the
nine months ended  September  30, 2005 of US$ 4.8 million and US$ 11.0  million,
respectively  as compared  with  segment  income of US$ 6.0 million and US$ 10.9
million for the same periods of 2004.

The technical  result for the three months ended  September 30, 2005 was US$ 4.7
million as compared  with US$ 4.9  million for the same period of 2004.  For the
nine months ended September 30, 2005, the technical  result was US$ 12.9 million
as compared  with US$ 10.3  million for the same period of 2004.  The  technical
result is defined as net premiums  earned minus  losses,  loss expenses and life
benefits minus acquisition costs plus technical interest.

The segment  income and  technical  result for the three and nine  months  ended
September  2005  were  primarily  attributable  to  the  expansion  of  existing
reinsurance  transactions  in Continental  Europe,  especially in the German and
Italian  markets,  contributing  approximately  US$ 1.7 million to the technical
result. In addition, updated cedent information pertaining to prior underwriting
years in our core overseas  markets and the positive  development  in the Middle
East contributed approximately US$ 1.8 million to the technical result.

The  positive  development  for the nine  months  ended  September  30, 2005 was
partially  offset by net reserve  strengthening in the amount of US$ 1.5 million
in the first quarter of 2005 related to the tsunami that occurred in late 2004.


                                                                              19




For the third quarter of 2005, gross premiums written  increased by 16.4% to US$
87.4  million,  net  premiums  written grew by 19.9% to US$ 83.9 million and net
premiums earned expanded by 21.7% to US$ 87.9 million.  This growth reflects new
business in Converium's German and Italian markets.

For the nine months ended September 30, 2005, gross premiums  written  decreased
slightly by 0.4% to US$ 263.8 million, primarily due to a decrease in the health
line of business in the Middle East and in the non-active North American market,
partially  offset  by the  positive  development  in other  lines,  above all in
Italian personal accident business.

Net premiums  written  increased  by 5.7% to US$ 253.4  million and net premiums
earned increased by 8.4% to US$ 243.2 million,  respectively.  This increase was
primarily driven by the above described business development and the termination
of  the  Life &  Health  Reinsurance  segment's  Master  Retrocession  Agreement
contributing an additional US$ 9.0 million in 2005.


The Run-Off segment  reported  segment income for the third quarter and the nine
months  ended  September  30,  2005 of US$ 21.8  million  and US$ 32.6  million,
respectively  as compared with a segment loss of US$ 104.7 million and US$ 383.8
million for the same periods of 2004.

For the third quarter of 2005,  the segment  result was  negatively  affected by
Hurricane  Katrina in the United States with a total impact of US$ 11.4 million,
offset  by  a  positive  net  income  contribution  of  US$  39.0  million  from
commutations and other settlements, which totalled close to US$ 250 million.

For the third quarter of 2005, the Run-Off segment  recorded US$ 12.6 million of
net strengthening of prior years' loss reserves,  resulting in net strengthening
of US$ 25.7 million for the nine months ended  September 30, 2005.  For the same
periods of 2004, the Run-Off segment recorded net  strengthening of prior years'
loss reserves of US$ 97.0 million and US$ 488.5 million, respectively.


Corporate Center

The Corporate Center carries certain administration  expenses,  such as costs of
the Board of  Directors,  the Global  Executive  Committee  and other  corporate
functions,  as well as other  expenses not allocated to the operating  segments.
The  Corporate  Center costs  decreased by 3.6% to US$ 8.1 million for the third
quarter and  increased  by 7.1% to US$ 27.3  million  for the nine months  ended
September 30, 2005 as compared with the same periods of 2004, respectively.  The
overall development  reflects increased legal, audit and consulting fees related
to  Converium's  organizational  and  operational  restructuring,  offset by the
decline in certain personnel costs.


                                                                              20







--------------------------------------------------------------- ------------------------- ------------------------
Financial highlights: Income statement                             Three months ended        Nine months ended
                                                                     September 30,             September 30,
                                                                    2005*        2004        2005*        2004
In US$ million, unless noted                                                   restated                 restated
--------------------------------------------------------------- ------------ ------------ ----------- ------------
                                                                                               
Gross premiums written                                                 482.6      1,040.5     1,618.9      3,544.2
- change (%)                                                          -53.6%                   -54.3%
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Net premiums written                                                   432.4        980.3     1,501.2      3,355.3
- change (%)                                                          -55.9%                   -55.3%
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Net premiums earned                                                    605.2      1,057.3     1,941.7      3,197.6
- change (%)                                                          -42.8%                   -39.3%
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Ongoing non-life loss ratio(8)                                         89.0%        81.4%       79.5%        75.9%
- change in percentage points                                        +7.6pts                  +3.6pts
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Ongoing non-life underwriting expense ratio(9)                         17.3%        19.6%       20.3%        21.9%
- change in percentage points                                        -2.3pts                  -1.6pts
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Ongoing non-life administration expense ratio(10)                       5.8%         4.9%        6.6%         3.9%
- change in percentage points                                        +0.9pts                  +2.7pts

--------------------------------------------------------------- ------------ ------------ ----------- ------------
Ongoing non-life combined ratio(11)                                   112.1%       105.9%      106.4%       101.7%
- change in percentage points                                        +6.2pts                  +4.7pts
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Life & Health technical result(12)                                       4.7          4.9        12.9         10.3
- change (%)                                                           -4.1%                   +25.2%
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Total investment results(13)                                            70.5         97.8       238.8        270.1
- change (%)                                                          -27.9%                   -11.6%
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Average annualized total investment income yield (pre tax)(14)          3.6%         4.9%        4.0%         4.6%
- change in percentage points                                        -1.3pts                  -0.6pts
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Pre-tax operating income (loss) (15)                                    22.1       -120.9        98.0       -319.1
- change (%)                                                            n.m.                     n.m.
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Net (loss) income                                                       -6.9        -88.2        34.5       -593.4
- change (%)                                                            n.m.                     n.m.
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Basic (loss) earnings per share (US$)                                  -0.05        -1.07        0.24        -7.24
- change (%)                                                            n.m.                     n.m.
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Diluted (loss) earnings per share (US$)                                -0.05        -1.07        0.23        -7.18
- change (%)                                                            n.m.                     n.m.
--------------------------------------------------------------- ------------ ------------ ----------- ------------
Annualized return on shareholders' equity(16)                          -1.6%       -27.5%        2.7%       -41.0%
- change in percentage points                                           n.m.                     n.m.
--------------------------------------------------------------- ------------ ------------ ----------- ------------



*    Reflects the effects of the restatement

---------------------
(6)  Ongoing  non-life loss ratio is defined as ongoing non-life losses and loss
     adjustment expenses divided by ongoing non-life net premiums earned.
(7)  Ongoing non-life  underwriting expense ratio is defined as ongoing non-life
     underwriting  acquisition  costs  divided by ongoing  non-life net premiums
     earned.
(8)  Ongoing non-life  administration  expense ratio is defined as ongoing other
     non-life operating and administration  expenses divided by ongoing non-life
     net premiums written.
(9)  Ongoing  non-life  combined ratio is defined as ongoing non-life loss ratio
     (to premiums earned) plus ongoing non-life  underwriting  expense ratio (to
     premiums  earned) plus ongoing  non-life  administration  expense ratio (to
     premiums written).
(10) Life & Health  technical  result is defined  as Life & Health net  premiums
     earned  minus  Life & Health  losses,  loss  adjustment  expenses  and life
     benefits  minus Life & Health  underwriting  acquisition  costs plus Life &
     Health technical interest.
(11) Total  investment  results  are defined as net  investment  income plus net
     realized capital (losses) gains.
(12) Average  annualized total  investment  income yield (pre-tax) is defined as
     total   investment   results  divided  by  average  total  invested  assets
     (including cash and cash equivalents), annualized.
(13) Pre-tax  operating  income  (loss) is defined as income (loss) before taxes
     excluding  net realized  capital  (losses)  gains,  impairment of goodwill,
     amortization of intangible assets and restructuring costs.
(14) Annualized  return on equity is  defined as net  income  (loss)  divided by
     shareholders' equity at the beginning of the period.


                                                                              21







  -------------------------------------------------------------------------------- ------------ -------------
                                                                                           
  Financial highlights: Balance sheet                                                Sept. 30,     Dec. 31,

                                                                                       2005*         2004
  In US$ million, unless noted                                                                     Restated
  -------------------------------------------------------------------------------- ------------ -------------
  Total invested assets plus cash and cash equivalents                                 7,605.9       8,467.1
  - change compared with December 2004                                                  -10.2%
  -------------------------------------------------------------------------------- ------------ -------------
  Claims supporting capital(17)                                                        2,088.5       2,125.9
  - change compared with December 2004                                                   +1.8%
  -------------------------------------------------------------------------------- ------------ -------------
  Shareholders' equity                                                                 1,697.3       1,734.8
  - change compared with December 2004                                                   -2.2%
  -------------------------------------------------------------------------------- ------------ -------------
  Book value per share (US$)(18)                                                         11.59         11.86
  - change (%)                                                                           -2.3%
  -------------------------------------------------------------------------------- ------------ -------------
  Book value per share (CHF)                                                             14.94         13.49
  - change (%)                                                                          +10.7%
  -------------------------------------------------------------------------------- ------------ -------------


  ------------------------------------------------------- ------------------------ --------------------------
  Financial highlights: Investment results                  Three months ended        Nine months ended
                                                               September 30,            September 30,

  In US$ million, unless noted
  -------------------------------------------------------
                                                              2005*        2004        2005*         2004
                                                                         restated                  Restated
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Investment income - Fixed maturities                           54.0        52.3        170.0         143.4
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Investment income - Equity securities                           0.9         1.0          4.8          13.2
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Investment income - Funds Withheld Asset                       15.2        18.2         48.3          57.5
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Investment income - other, net of expenses                      6.8         6.0         23.8          14.0
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Net investment income                                          76.9        77.5        246.9         228.1
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Average annualized net investment income yield                 4.0%        3.9%         4.1%          3.9%
  (pre-tax)
  ------------------------------------------------------- ------------ ----------- ------------ -------------

  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Net realized capital (losses) gains                            -6.4        20.3         -8.1          42.0
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Total investment results                                       70.5        97.8        238.8         270.1
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Average annualized total investment income yield               3.6%        4.9%         4.0%          4.6%
  (pre-tax)
  ------------------------------------------------------- ------------ ----------- ------------ -------------

  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Change in net unrealized gains (losses) (pre-tax)              -9.4        30.9         18.3         -46.0
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Total investment return (pre-tax)                              61.1       128.7        257.1         224.1
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Average annualized total investment return (pre-tax)           3.1%        6.5%         4.3%          3.8%
  ------------------------------------------------------- ------------ ----------- ------------ -------------
  Average total invested assets (including cash and cash      7,785.4     7,943.7      8,036.6       7,872.9
  equivalents)
  ------------------------------------------------------- ------------ ----------- ------------ -------------



  * Reflects the effects of the restatement




---------------------
(15) Claims  supporting  capital is defined as total  shareholders'  equity plus
     debt.
(16) Reflects the impacts of the rights offering that occurred in October 2004.


                                                                              22




     Selected third quarter financial information


     Basis of preparation


     The   unaudited   interim   financial   information   ("interim   financial
     information")  for Converium  Holding AG and  subsidiaries  ("Converium" or
     "the  Company") has been  prepared on the basis of United States  generally
     accepted   accounting   principles  for  interim   financial   information.
     Accordingly,  such interim  financial  information does not reflect all the
     information  required  by  generally  accepted  accounting  principles  for
     complete  financial   statements.   In  the  opinion  of  management,   all
     adjustments   considered  necessary  for  a  fair  presentation  have  been
     included.  The  results  of  operations  for  the  interim  period  are not
     necessarily  indicative  of the results  that may be expected  for the year
     ended  December  31,  2005,  as interim  results may be affected by several
     factors including,  but not limited to, changes in the economic environment
     and catastrophic  losses. As reported in this press release,  the financial
     statements  for the year ended December 31, 2004 have been restated and the
     interim financial information for the three and nine months ended September
     30, 2005 reflects the effects of the restatement.

     This interim financial  information  should be read in conjunction with the
     audited  financial  statements  of Converium as reported on Form 20-F/A for
     the year ended December 31, 2004.

     Converium's  business is organized around three ongoing operating segments:
     Standard Property & Casualty Reinsurance, Specialty Lines and Life & Health
     Reinsurance,  which are based  principally on global lines of business,  in
     addition to a Run-Off  segment.  The Run-Off segment includes all business:
     both life and  non-life,  originating  from  Converium  Reinsurance  (North
     America) Inc. and Converium  Insurance (North America) Inc.,  excluding the
     US  originated  aviation  business.  In  addition  to  the  four  segments'
     financial information,  the corporate Center carries certain administration
     expenses,  such as costs of the Board of  directors,  the Global  Executive
     committee  and other  corporate  functions  as well as other  expenses  not
     allocated to operating segments.  As well as reporting  individual segments
     results,  management also presents the  aggregation of Standard  Property &
     Casualty  Reinsurance  and  Specialty  Lines,  referred to in the financial
     information  as  ongoing  non-life  business,  as these  are both  non-life
     segments,  the  aggregation  of which  management  considers  meaningful in
     understanding  the  performance  of  Converium.  This measure  excludes the
     non-life  business  contained  within  the  Run-Off  segment  in line  with
     management's  desire to monitor this segment on a  stand-alone  basis.  The
     aggregation  of the  Life & Health  Reinsurance  segment  with the  ongoing
     non-life business is referred to as total ongoing business.

     As  a  result  of  the  restatement,  any  previously  published  financial
     statements and information should not be viewed as a basis of comparison to
     the results presented today and should no longer be relied upon.  Converium
     expects to file shortly an amended Form 20-F/A  reflecting the  restatement
     adjustments  and  their  impact  on  previous   disclosures  and  financial
     statements.


                                                                              23




Converium has made it a policy not to provide any  quarterly or annual  earnings
guidance and it will not update any past outlook for full year earnings. It will
however  continue to provide  investors with  perspectives on its value drivers,
its  strategic  initiatives  and those  factors  critical to  understanding  its
business and operating environment.



Enquiries:

Esther Gerster                                 Zuzana Drozd
Head of Public Relations                       Head of Investor Relations

esther.gerster@converium.com                   zuzana.drozd@converium.com

Phone:       +41 (0) 44 639 90 22              Phone:       +41 (0) 44 639 91 20
Fax:         +41 (0) 44 639 70 22              Fax:         +41 (0) 44 639 71 20


About Converium

Converium is an independent  international  multi-line  reinsurer  known for its
innovation,  professionalism  and service.  Today  Converium  employs  about 600
people  in 20  offices  around  the globe and is  organized  into four  business
segments:  Standard Property & Casualty Reinsurance,  Specialty Lines and Life &
Health  Reinsurance,  which are based  principally  on ongoing  global  lines of
business, as well as the Run-Off segment, which primarily comprises the business
from Converium  Reinsurance  (North  America) Inc.,  excluding the US originated
aviation business portfolio. Converium has a "BBB+" rating (outlook stable) from
Standard & Poor's and a "B++" rating (outlook stable) from A.M. Best Company.


                                  * * * * * * *


                                                                              24




Important Disclaimer

This document contains  forward-looking  statements as defined in the US Private
Securities Litigation Reform Act of 1995. It contains forward-looking statements
and  information  relating  to the  Company's  financial  condition,  results of
operations,   business,   strategy  and  plans,  based  on  currently  available
information. These statements are often, but not always, made through the use of
words or phrases such as `seek to',  `expects',  `should continue',  `believes',
`anticipates',   `estimates'   and  `intends'.   The  specific   forward-looking
statements cover, among other matters, the Company's internal review and related
restatement, the reinsurance market, the Company's operating results, the rating
environment and the prospect for improving results and expense reductions.  Such
statements are  inherently  subject to certain risks and  uncertainties.  Actual
future results and trends could differ  materially  from those set forth in such
statements  due to  various  factors.  Such  factors  include  the impact of our
ratings downgrade or a further lowering or loss of one of our financial strength
ratings; the impact of the restatement on our ratings and client  relationships;
uncertainties of assumptions used in our reserving process; risk associated with
implementing our business  strategies and our capital  improvement  measures and
the  run-off of our North  American  business;  cyclicality  of the  reinsurance
industry;  the  occurrence  of natural and man-made  catastrophic  events with a
frequency or severity  exceeding  our  estimates;  acts of terrorism and acts of
war;  changes in economic  conditions,  including  interest  and  currency  rate
conditions that could affect our investment  portfolio;  actions of competitors,
including  industry   consolidation  and  development  of  competing   financial
products;  a decrease in the level of demand for our  reinsurance  or  increased
competition  in our  industries  or  markets;  a loss  of our key  employees  or
executive  officers  without  suitable  replacements  being  recruited  within a
suitable  period of time;  our ability to address  material  weaknesses  we have
identified in our internal control environment; political risks in the countries
in which we operate or in which we reinsure  risks;  the  passage of  additional
legislation or the  promulgation of new regulation in a jurisdiction in which we
or our clients operate or where our subsidiaries are organized; the effect on us
and the insurance industry as a result of the  investigations  being carried out
by the US Securities and Exchange  Commission,  New York's Attorney  General and
other  governmental  authorities;  changes in our investment  results due to the
changed  composition of our invested assets or changes in our investment policy;
failure of our  retrocessional  reinsurers to honor their obligations or changes
in the  credit  worthiness  of our  reinsurers;  our  failure  to prevail in any
current or future arbitration or litigation;  and extraordinary events affecting
our  clients,  such as  bankruptcies  and  liquidations  , and  other  risks and
uncertainties,  including  those  detailed in the Company's  filings with the US
Securities and Exchange Commission and the SWX Swiss Exchange.  The Company does
not assume any obligation to update any forward-looking statements, whether as a
result of new information, future events or otherwise.

www.converium.com
-----------------


                                                                              25




                                   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.


                                      CONVERIUM HOLDING AG



                                      By:  /s/ Inga Beale
                                           --------------------------------
                                           Name:   Inga Beale
                                           Title:  CEO


                                      By:  /s/ Christian Felderer
                                           --------------------------------
                                           Name:   Christian Felderer
                                           Title:  General Legal Counsel


Date: March 2, 2006