Rockefeller Capital Management has acquired a multi-family office in California, the company says.

Mountain View-based Financial Clarity, founded in 1992 by Stan Young, caters to the financial needs of Silicon Valley founders, venture partners and executives, according to a press release from Rockefeller.

The company oversees around $2.3 billion, Rockefeller says. Young joins Rockefeller as managing director and senior client advisor, according to the press release.

“Since our founding, we have advised wealthy families on multi-generational planning, trust and estates structuring, investment advisory and areas of philanthropy that are most important to them,” Young says in the press release. “I greatly look forward to becoming a part of the Rockefeller team to continue this tradition.”

The deal, whose financial terms the companies didn’t disclose, is expected to close in the fourth quarter, Rockefeller says.

Led by Gregory Fleming, former president of Morgan Stanley and Merrill Lynch, Rockefeller has been expanding its footprint on the West Coast, recently opening offices in San Francisco and Los Angeles, according to the press release.

But the firm has been also aggressively poaching large producers from wirehouses ever since Fleming took the lead last year. Since the beginning of May, Rockefeller has lured several brokers from Morgan Stanley, Wells Fargo Advisors and UBS and added an executive from Merrill Lynch.