Jan Koum (born on February 24, 1976) is a Ukrainian-American billionaire businessman and computer engineer.He is the co-founder and former CEO of WhatsApp, a mobile messaging app which was acquired by Facebook in 2014 for US$19.3 billion. Top 19 Jan Koum Quotes 1. Communication is at the very core of our society. That’s what makesContinue reading "Top 19 Jan Koum Quotes On Communications, Productivity And Advertising."