https://www.recode.net/2017/8/28/16214166/dara-khosrowshahi-expedia-uber-barry-diller-letter-sec >It’s a formality, but he can’t become CEO of Uber without it: Expedia CEO Dara Khosrowshahi has formally told the online travel business he has run for the last 12 years that he wants to leave. >But he hasn’t left quite yet.