Mark Zuckerberg, co-founder and chief executive officer of Facebook Inc (NASDAQ:FB) disclosed that he controls a 19.6% stake in the company based on his 13G filing with the Securities and Exchange Commission (SEC) on Friday, February 7, 2014.

Mark Zuckerberg Facebook

Based on his regulatory filing, he owns total of 478,914,465 shares composed of Class A and Class B common stock of Facebook Inc (NASDAQ:FB). His stockholdings include the following:

  • 49,082,762 shares of class-B common stock convertible into Class-A common stock at any time
  • 3,325,965 shares of Class-B common stock held under the Mark Zuckerberg 2008 Annuity Trust dated March 13, 2008
  • 217 shares of class-A common stock and 373,843,120 shares of Class-B common stock under the Mark Zuckerberg Trust dated July 7, 2006, and 3 shares of Class-B common stock under the Openness Trust dated April 2, 2012
  • 52,662,398 shares of Class-B common stock held by other stockholders, over which under all but certain limited circumstances he holds an an irrevocable proxy, pursuant to voting agreement between him, the social network giant, and such stockholders.

Each of the Class-B common stock held by Mark Zuckerberg is convertible Class-A shares of common stock any time. Each of the Class-A common stock is entitled to one vote and each Class-B common stock is entitled to ten votes.

Mark Zuckerberg’s personal challenge

Every year, Mark Zuckerberg gives himself a personal challenge. In the past, the CEO of the social network giant challenged himself to learn Mandarin (2010), and to meet a new person every day that does not work at Facebook (2013).

This year, Mark Zuckerberg challenged himself to write a well-considered thank you note every day via e-mail or handwritten. According to him, the task is important to him because he is a critical person.

In an interview with Bloomberg Businessweek, Mark Zuckerberg said, “It’s important for me, because I’m a really critical person. I always kind of see how I want things to be better, and I’m generally not happy with how things are, or the level of service that we’re providing for people, or the quality of the teams that we built. But if you look at this objectively, we’re doing so well on so many of these things. I think it’s important to have gratitude for that.”

Ebersman reduces FB stake

Meanwhile, David Ebersman, chief financial officer of Facebook Inc (NASDAQ:FB) sold 23,400 shares of Class-A common stock including 11,700 shares at $62 per share and another 11,700 shares for $62.72 a piece based on his form 4 filing with the SEC.