Jan Koum
Jan Koum is a Ukrainian American computer programmer. He is the co-founder and was the CEO of WhatsApp, a mobile messaging application which was acquired by Facebook Inc. in February 2014 for US$19.3 billion.
- Jan Koum cofounded WhatsApp, now the world’s biggest mobile messaging service, in 2009.
- Facebook bought the startup for $22 billion in cash and stock in 2014.
- He resigned as CEO of WhatsApp in April 2018 and announced he would leave Facebook‘s board as well.
- Koum worked at Yahoo for nearly nine years before leaving to found WhatsApp.
- Koum has donated $1.15 billion of Facebook stock to charitable entities, including to his Koum Family Foundation.
