Uber's Kalanick sells 21% of his stake after share lockup expires

(Reuters) - Uber Technologies Inc co-founder and former chief executive Travis Kalanick has sold nearly 21% of his stake in the ride-hailing company following the expiry of a so-called lockup period, a regulatory filing from late Friday showed.Kalanick sold more than 20 million shares, worth nearly $547 million (425 million pounds), according to the filing.He still owns about 75.4 million shares in Uber, worth more than $2 billion, based on their Friday closing. Shares of Uber hit a record low..