Early Facebook ad salesman Tom Arrix, pictured right, said on July 16, 2013 that he was leaving Facebook -- in a Facebook post, of course. Arrix started in 2006, back when Facebook had just 8 million users, and became the company's head of North American sales. After seven years with the company, the pioneering ad executive said he had completed the goals he set out to do and was ready to move on.
"We crafted a vision that allowed marketers to better connect their brands with people, we started from scratch and built a multibillion-dollar business, we adopted and excelled at mobile advertising faster than anyone could imagine, and we have the most passionate and amazing teammates around the world," Arrix wrote.
After almost four years with Facebook, Christian Hernandez, pictured right, announced in July 2013 that he was leaving the social network to become an investment partner at White Star Capital.
Hernandez served as Facebook's director for the social network's U.K. and Pan-European divisions at the time of his departure, and was previously the company's director of platform partnerships for the same regions.
Former Facebook Vice President and General Counsel Ted Ullyot announced his departure in May 2013 after five years building the social network's legal team and defending it from patent suits and other litigious parties. Colin Stretch was promoted as Ullyot's replacement and assumed the head lawyer position on July 5.
Ullyot is pictured right with Washington State Attorney General Rob McKenna at a Seattle press conference in January 2012.
Josh Wiseman, pictured right with footballer Tim Tebow, spent six years at Facebook before leaving in early May 2013. The veteran executive joined Facebook in 2007 after intern gigs at Apple and Google. He quickly climbed the ranks and became Facebook's engineering director, a position that had him overseeing some of Facebook's biggest product releases.
"I've sort of developed a desire to work on a more tangible social problem -- like the health care industry -- that I don't think Facebook necessarily plans to tackle in the near term," Wiseman told AllThingsD at the time.