Patinex AG Acquires 12.49% in Converium Voting Rights

Disclosure of shareholdings pursuant to Art. 20 SESTA


ZUG, Switzerland, Dec. 21, 2005 (PRIMEZONE) -- Converium Holding Ltd, Zug, has been notified that Patinex AG, Egglirain 24, 8832 Wilen, Switzerland, has acquired 12.49% of voting rights in Converium Holding AG (5.06% in the form of 7,425,000 registered shares and 7.43% in the form of purchase rights with entitlement to purchase 10,900,000 registered shares).

Contacts:



 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

 www.converium.com


-0-