Mark Zuckerberg stopped selling his Facebook stock last year as its price tumbled

Facebook's CEO Mark Zuckerberg delivers a speech during the Viva Technology trade fair in Paris in May.
(Gerard Julien / AFP / Getty Images)

Mark Zuckerberg’s multibillion-dollar stock sale ground to a halt in the final months of 2018.

The Facebook Inc. co-founder didn’t sell a single share in the fourth quarter, when the social media company’s stock tumbled 20% amid a broader market rout. It was the first quarter in more than two years that he refrained from doing so, according to data compiled by Bloomberg.

Zuckerberg, 34, said in September 2017 that he would unload 35 million to 75 million Facebook shares over the following 18 months as part of a pledge to give away almost all of his fortune during his lifetime. Since then, he has sold about 30.4 million shares worth roughly $5.6 billion.

The transactions have been scheduled in advance with a so-called 10b5-1 trading plan, which can include parameters such as price or volume limits. Vanessa Chan, a spokeswoman for the Menlo Park, Calif., company, declined to comment.

Facebook shares have dropped nearly 40% from a record $218.62 on July 25 as the firm faced mounting criticism over its handling of user data and policing of content. Those issues will take years to fix, Zuckerberg has said. The decline shaved more than $32 billion from his net worth, dropping him to seventh on the Bloomberg Billionaires Index, a listing of the world’s richest people.


The Chan Zuckerberg Initiative will be a limited liability company controlled by the social media magnate and his wife, Priscilla, 33, rather than a charitable trust. That means they will both be able to make philanthropic investments and back political causes. The entity aims to decrease inequality and build technology to spur change, partly through investments in health and education.

In total, senior executives and directors of Facebook, Inc., Netflix Inc. and Google parent Alphabet Inc. sold about $7.1 billion of stock last year, the most since 2016, when they disposed of $10.7 billion, according to data compiled by Bloomberg. That excludes shares that were gifted or sold to cover taxes.