Coinbase executives may sell up to 13.6 million shares of Coinbase for $2.2 billion In Coinbase's third-quarter report filed with the SEC, CEO Brian Armstrong, co-founder Fred Ersam and president Emily Choi adopted Rule 10b5-1 trading plans. They allow the sale of up to 13.6 million shares of currency, about $2.2 billion at the closing price on October 29. Armstrong's plan covers up to 8.17 million shares from November 16, 2026 through October 2027, subject to predetermined price thresholds.