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Jan Borysovych Koum (born February 24, 1976) is an American billionaire businessman and computer programmer. 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. According to Forbes, he has an estimated net worth of US$15.2 billion as of October 2023, making him one of the richest people in the world. Koum was ranked 44th on the Forbes' list of richest Americans in 2023 with a net worth of $15.1 billion.
Steve Jobs painstakingly built his Venus superyacht as a monastic escape from the world's noise, and WhatsApp's billionaire co-founder Jan Koum, took the idea further, engineering his $220 million Moonrise for near-total silence that he has just sold for a rep
WhatsApp founder Jan Koum's 328-foot superyacht Moonrise is turning heads off Mykonos
Koum Family Foundation gifts $36 million to L.A.'s Milken Community School for campus expansion
'The gift reflects...': Why WhatsApp co-founder Jan Koum donates $200 million to a Jerusalem hospital now
WhatsApp founder Jan Koum makes largest-ever donation to Jerusalem's Shaare Zedek hospital
Not someone to pack cardboard boxes into a U-Haul, WhatsApp billionaire Jan Koum docked both his $300M superyachts next to each other in Malaga and, for days, used a massive crane to move his multi-million-dollar furniture and water toys to his new ves
WhatsApp Co-Founder Jan Koum Gives $200 Million to Jerusalem Hospital in Record Israeli Healthcare Donation
WhatsApp cofounder Jan Koum gifts $200 million to Jerusalem’s Shaare Zedek hospital
WhatsApp billionaire Jan Koum donates $200 million to Jerusalem hospital Shaare Zedek
With record $200M gift, Koum Foundation set to triple footprint of Jerusalem's Shaare Zedek hospital
Journalist Bret Stephens Delivers Keynote Address at Inauguration of the Jan Koum Israel Studies Program - Freeman Spogli Institute for International Studies
No. 14: Jan Koum, Michael Dell, Bill Ackman, Marc Benioff, Larry Ellison, Michael Bloomberg
WhatsApp founder Jan Koum donates record $2 million to AIPAC’s campaign efforts
After $100 Million Malibu Purchase, WhatsApp Co-Founder Jan Koum Pays $87 Million for the Home Next Door
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