According to a Form 4 filing with the U.S. Securities and Exchange Commission, Ehrsam – through Paradigm, the venture capital firm he co-founded – purchased more than 706,000 shares of Coinbase on May 13 at an average price of about $70 each, or nearly $50 million worth. He then followed that up on May 17 with the purchase of another 385,000 shares at an average price of roughly $65 each, or about $25 million worth.