https://www.reuters.com/article/us-facebook-investors/iss-recommends-votes-against-facebook-ceo-zuckerberg-4-other-directors-idUSKCN1IH309 >Proxy adviser Institutional Shareholder Services on Wednesday recommended investors withhold their support from five Facebook Inc directors, including Chief Executive Mark Zuckerberg and Chief Operating Officer Sheryl Sandberg, citing issues including the social media company's lack of a formal nominating committee.