3. Priscilla Chan and Mark Zuckerberg
Founder of Facebook, Mark Zuckerberg, and his paediatrician wife, Priscilla own the Zuckerberg/Chan organisation in partnership that aims to provide aid to the less fortunate. Despite their preference to maintain a low profile regarding their philanthropic activities, we already know they made a very generous contribution of 2.5 million dollars to the Silicon Valley Foundation. And also have a small-staffed operation known as ‘Startup:Education’.