The Winklevoss twins settled with Facebook in 2008 for $20 million in cash and 1.5 million Facebook shares, valued at $45 million at the time. After a five-for-one Facebook stock split in 2010, they held 6 million shares. At the current FB share price of $174, those shares would be worth a little over $1 billion today. However, the Winklevoss twins sold some of those shares and invested $11 million in bitcoin and became bitcoin billionaires.