InvestorPlaceMarch 15, 2019, 2:51 PM GMT. Although Facebook (NASDAQ:FB) is one of the top performers for this year — shares are up nearly 32% since January’s opener — it frustratingly can’t escape unfavorable PR. Following the announcement of a high-profile executive departure, Facebook stock took a hit in both the regular and extended sessions. In a memo to employees that was also shared publicly, CEO Mark Zuckerberg disclosed that Chris Cox, the company’s chief product officer, was parting ways with the social-media firm. To say that he represented the backbone of FB stock is an understatement. But if that wasn’t enough, another executive, Chris Daniels, is also jumping ship.