Cryptocurrency exchange Coinbase CEO Brian Armstrong sold his company's shares for weeks after Donald Trump was elected president and pro-crypto lawmakers won, cashing out a total of about $437 million. He sold shares that were up $129 million from his pre-election valuation due to optimism in the market following the election results. Brian Armstrong still owns more than 10 percent of Coinbase and about 24 million shares in his trust are worth about $6.40 billion, up nearly $2 billion from Nov. 5, according to the latest SEC filing.