Officials at Pfizer, Moderna, Novavax, have recently made millions of dollars by selling stakes of their businesses, raising several questions. When Pfizer revealed preliminary results showing that its vaccine was 90% successful, Albert Bourla, CEO, Pfizer sold $5.6 million worth of shares on the same day. In recent times, many Moderna officials have sold more than $100 million worth of shares. The Novavax chief also sold $4.2 million in shares, after the announcement that it would receive $1.6 billion in public funding.