https://www.reuters.com/article/us-retail-trading-blackberry-executives/blackberry-execs-sold-shares-as-reddit-driven-rally-started-idUSKBN29Y1S8 >Three BlackBerry executives, including the chief financial officer, sold $1.7 million of the telecoms technology firm's stock in the early days of this month's meteoric share price rise, filings with securities regulators show.