According to a filing made public Monday, DoorDash plans to list 33 million shares, at a price range between $75 to $85 per share. Xu owns 4.6% of the delivery giant while cofounders Andy Fang, 28, and Stanley Tang, 27, each own 4.2%. A fourth cofounder, Evan Moore, now a partner at Khosla Ventures, is not listed on the filing.