The other Google co-founder and CEO of Google parent company, Alphabet, Larry Page is worth $32.3 billion and ranks #10 on the Forbes 400. Last year, Mr. Page donated 0.6 percent of his worth, $178 million, to the Carl Victor Page Memorial Foundation, a foundation he started in 2006 in memory of his father. The Foundation focuses on supporting environmental and human services nonprofits.

Norbert von der Groeben/Reuters/File
Larry Page at the Robert F. Peckham Federal Courthouse in San Jose, California in September, 2011.