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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...

Jan Koum became a billionaire in the very building he used to pick up food stamps for himself and his mother. Today, Koum’s net worth is $9.9 billion. Why someone hasn’t turned the life story of the father of WhatsApp into a movie is beyond anyone’s best guess.

Jan Koum, who controls a multi-billion-dollar charitable foundation, has not uttered a public word even as many other wealthy Ukrainians and Russians announce donations toward humanitarian relief...

Jan Koum is your typical rags-to-riches success story, and considering that he co-founded Israel’s most popular media application, that title does not go undeserving. Koum was the mind behind...

Today it’s Jan Koum, who just sold his mobile messaging platform WhatsApp to Facebook for $19 billion in cash and stock. Koum had been a relatively low-key CEO, giving few media interviews as...

Jan Koum profile summary . Full names: Jan Koum ; Date of birth: February 24, 1976 ; Age: 46 years old as of 2022; Place of birth: Kyiv, Ukraine ; Nationality: Ukrainian, American; Zodiac sign: Pisces; Gender: Male ; Profession: Businessman and computer engineer; Famous as: The co-founder of WhatsApp Inc. Height in cm: 180 cm; Height in feet: 5 ...

Feb 24, 2017 Happy 8th Birthday @WhatsApp ! New improved status now available for 1.2B users and we’ve hit a new milestone in India – 200M monthly users. 340 209 950 jan koum @jankoum · Jan 17, 2017 "it's inaccurate to the point of irresponsibility to call this behavior a backdoor." -- eff.org

Multiple sources now say that the mysterious buyer of Katzenberg’s palatial estate was not a U.K.-based family, as was initially reported, but rather multibillionaire American tech tycoon Jan Koum, the co-founder of WhatsApp and a man with a well-documented affinity for trophy real estate.