What is the recent performance context for Magnite shares? Following this disposition, Michael Barrett retains direct ownership of 403,074 shares and continues to hold 293,968 derivative securities, including vested stock options, ensuring significant continued alignment with shareholders. He exercised 38,596 stock options and immediately sold them, a tactic employed by many executives. Also, Barrett maintained a sizable equity stake post-disposition, given his direct holdings of 403,074 shares and an additional 293,968 stock options. Magnite's CEO Sold Nearly 40,000 Company Shares.