Embattled UBS AG, based in Switzerland, has announced the departure of three financial experts from its board, and the election of three more.

Departing the board will be Ernesto Bertarelli, Gabrielle Kaufmann-Kohler, and Joerg Wolle. Nominated to take their places are Michel Demare, the current CFO of Swiss engineering firm ABB; Ann Godbehere, the former Swiss Reinsurance financial chief; and Axel Lehmann, chief risk officer of Swiss insurer Zurich Financial Services.

UBS has been one of the hardest-hit banks in the global credit crisis, suffering more than $50 billion in asset writedowns. Shareholders will vote on the nominations April 15 at the annual general meeting, at which time investors also are likely to elect former Swiss Finance Minister Kaspar Villiger, who is expected to replace Peter Kurer as the company’s chairman.