At the time Zuckerberg offered $3 billion, Spiegel and Murphy are believed to have each owned 15% of Snapchat. That would have meant that they both would have received $450 million before taxes. After taxes, they both would have been left with around $270 million in the bank. At 23 years old. From an app that causes photos to disappear. In August, 2014, Snapchat took in an investment from Venture Capital firm Kleiner Perkins, which valued the company as a whole at $10 billion. By this time, Spiegel and Murphy’s ownership stakes had been reduced to approximately 7.5% each. That meant their paper net worths (before taxes) were $750 million per person. At 24 years old. From an app that causes photos to disappear. Just five months later, Snapchat received another investment round, leaving the company with a valuation of $19 billion. As of this writing, the company is valued at $20 billion. At a $20 billion valuation, Spiegel and Murphy’s 7.5% stakes are each worth $1.5 billion before taxes. Evan Spiegel was born on June 4, 1990, making him 24 years old today. Bobby Murphy was born on January 31, 1990, making him 25 years old today. At 24 and 25 years old, respectively, Spiegel and Murphy are officially the youngest billionaires on the planet. They both knock out the previous holder of this title, 29-year-old Greek shipping heiress Athina Onassis (born January 29, 1985). Other notable young billionaires include: Dustin Moskowvitz – 30 years old – $8 billion net worth (Dustin is just 8 days younger than Zuckerberg) Mark Zuckerberg – 30 years old – $33 billion Elizabeth Holmes – 31 years old – $4.5 billion (Elizabeth is the founder of blood testing health company Theranos) Nathan Blecharczyk – 31 years old – $2 billion (Nathan is the co-founder of Airbnb) Drew Houston – 31 years old – $1.3 billion (Co-founder of Dropbox) Brian Warner – 32 years old – Priceless (Extremely handsome founder CelebrityNetWorth.com)