https://www.mercurynews.com/2019/03/14/facebook-says-its-top-product-executive-chris-cox-is-leaving-the-highest-level-departure-in-years/

Facebook’s top executive in charge of all products, Chris Cox, the longtime confidant of Chief Executive Mark Zuckerberg, is leaving the company, the highest-level departure at the social media giant and follows nearly two years of sustained crises.

Cox’s unexpected departure, which he and Zuckerberg announced in separate Facebook posts Thursday, comes months after Cox was promoted in a major reorganization. Last May, Cox was put in charge of Facebook’s “family of apps,” including Instagram, Messenger, WhatsApp, and Facebook itself – which together have over 2.7 billion users worldwide. These apps have been distinct until recently, when Zuckerberg announced plans to unify them under a banner of/with a new focus on privacy.