https://www.recode.net/2017/9/23/16354302/why-mark-zuckerberg-facebook-stock-split

Facebook withdrew a proposal on Friday that would have split the company’s stock and issued a new class of non-voting shares to the general public — a restructuring that would have allowed CEO Mark Zuckerberg to retain control over the company even while selling his own shares to fund his philanthropic endeavors.

The retraction was a surprise. Zuckerberg, along with his wife Priscilla Chan, have pledged to give away 99 percent of their Facebook shares over their lifetime. That will mean that the couple is planning to simultaneously give away money while also giving away Zuckerberg’s control over Facebook.