SVB Financial Group in Santa Clara, Calif., said that Ken Wilcox will step down as its chief executive to focus more on the company's global expansion.

Wilcox is to be chairman of SVB's Silicon Valley Bank, where his duties are to include creating a joint venture bank in China, according to a press release Thursday from the $16.5 billion-asset company.

Greg Becker, SVB's president, is to succeed Wilcox as CEO as of April 21.

SVB also said its fourth-quarter earnings nearly tripled from a year earlier, to $17.5 million.

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