The selling shareholders will still control about $36 billion worth of the San Francisco-based firm's stock after the offering. : Early investors and employees of Uber Technologies Inc. are planning to sell about $1.3 billion worth of stock in the ride-hailing firm’s initial public offering. Benchmark is the biggest seller, offering 5.7 million of its shares, according to a regulatory filing Friday. That would fetch about $270 million at the middle of the listing’s current $44 to $50 price range.