ZURICH (Reuters) – UBS’ head of strategy Christian Zeinler plans to leave the bank to pursue entrepreneurship outside of banking, Chief Executive Ralph Hamers told employees on Tuesday in a memo seen by Reuters. UBS, the world’s largest wealth manager and Switzerland’s largest bank, has delivered a series of strong results over recent years, booking its best annual profit since the global financial crisis in 2021 and its best first-quarter net profit in 15 years at the start of 2022. The bank in February unveiled a new strategy focussed on using technology to help it increase revenue and reach…