Click here to preview the new Fast Company

Want to try out the new

If you’d like to return to the previous design, click the yellow button on the lower left corner.

Randi Zuckerberg

Founder, Zuckerberg Media

Mark is not the only mogul in the Zuckerberg family. His big sister Randi is the former director of market development of Facebook, which she left to found her own company, Zuckerberg Media. She produced the Bravo reality show Start-Ups: Silicon Valley, and has authored three books about life in the social media age.