Jan Koum Net Worth
Jan Koum Net Worth $13.8 Billion Date of Birth 24 Feb 1976 Earning Source Song Writing, Singing, Endorsements Monthly Income $1 Billion Nationality Ukraine Jan Koum was born on February 24, 1976 in Yan Borysovych Kum, Ukraine. Well, if you don’t know him, then he is the one of the founding members of WhatsApp, which …