A former partner at Swiss private bank La Roche is launching a multi-family office. The move come shortly after his three ex-partners joined Swiss private banking partnership E. Gutzwiller.

Mathis Buettiker is founding a multi-family office, a source familiar with the matter told finews.com. He is one of four ex-partners of La Roche, alongside brothers Urs and Christoph Gloor, and Philip Baumann, who six months ago suddenly left Vontobel after it was acquired by Vontobel last year.

The carefully calculated exit by the Basel-based wealth veterans was emblematic of the perils of private banking mergers. Founded in 1787, La Roche sold itself in 2015 to Notenstein – which rose from the ashes of disgraced Swiss bank Wegelin. Last year, Notenstein La Roche was sold to Vontobel – setting off a game of hopscotch for clients and assets, as finews.com reported.

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Buettiker's three former partners joined E. Gutzwiller, a Basel-based private bank – their third move in four years. By contrast, the 50-year-old Buettiker is going solo with a multi-family office called BTK21 early next year. 

Together with a handful of partners and staff, Buettiker wants to target local families with advice on tax, law, and wealth management, he confirmed to finews.com. The veteran private banker is impeccably connected, and will continue to serve as a board member for family foundations including those of well-known local dynasties such as La Roche, Endress, and Stuerm, he said. He also remains open to taking on additional board mandates in the financial industry.