1. Jan Koum
CEO and co-founder of WhatsApp
Before Facebook made Koum a multi-billionaire he had once lived on food stamps.
Flickr via Hubert Burda Media
Net worth: $6.8 billion (according to Forbes)
1. Jan Koum
CEO and co-founder of WhatsApp
Before Facebook made Koum a multi-billionaire he had once lived on food stamps.
Flickr via Hubert Burda Media
Net worth: $6.8 billion (according to Forbes)
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