(Co-Founder and Former CEO of ‘WhatsApp’)
Birthdate: February 24, 1976
Sun Sign: Pisces
Birthplace: Kyiv, Ukraine
Jan Koum is a Ukrainian American computer programmer and entrepreneur. He is credited with co-founding the popular cross-platform messaging service, WhatsApp. One of the most popular billionaires around the world, Koum donated almost $556 million to the donor-advised community foundation, Silicon Valley Community Foundation, in 2014.