Mike Dargan, who has been with UBS for 7 years, and Francesca McDonagh, who joined Credit Suisse last September, will be tasked with unifying the two banks.

It is unclear when the merger will be completed.

UBS has agreed to buy Credit Suisse for 3 billion Swiss francs ($3.26 billion) in stock and to assume up to 5 billion francs ($5.44 billion) in losses, in a merger engineered by Swiss authorities.

($1 = 0.9199 Swiss francs)

(Reporting by Noele Illien; editing by Jason Neely)