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Hitt og þetta 18. apríl 2006

Repurchase of shares for Employee Participation Plans

Converium Holding AG has repurchased 600'000 shares in the period of January 1 through March 31, 2006 on the SWX Swiss Exchange in conjunction with its share delivery obligations under the various Employee Participation Plans.

Converium Holding AG will continue its repurchases of own stock in order to fulfil its share delivery obligations under the various Employee Participation Plans.

Enquiries:

Zuzana Drozd Head of Investor Relations zuzana.drozd@converium.com Phone +41 (0) 44 639 91 20 Fax +41 (0) 44 639 71 20

Esther Gerster Head of Public Relations esther.gerster@converium.com Phone +41 (0) 44 639 90 22 Fax +41 (0) 44 639 70 22