10 Billionaires Giving Away Half Their Fortunes

10. Paul Allen

Allen relinquished his post with Microsoft in 1983 after being diagnosed with Hogkin’s disease. One month after the Giving Pledge launched in 2010, the mogul signed up to depart with over half of his estimated $16.2 billion fortune. Known for his lavish spending which includes one of the world’s largest private yachts (named Octopus), the Seattle Seahawks football team, and Captain Kirk’s chair on the Starship Enterprise, Allen has publicly vowed to leave the majority of his estate to philanthropic causes with an emphasis on non-profit scientific research. He’ll probably keep Kirk’s chair…
10. Paul Allen