There's been quite a few stories about this, and one is how secretive the company is. Apparently there have been $billion offers in the past, and these were all rejected, because the owners didn't feel that it was right to sell.
Whatever the case, it would appear that one 'graffiti' artist might pocket about $124 million, because he chose 'future' options, and not payment at the time for his commissioned work.
The company has just under $4 billion cash in the bank.
From zero in 2004 to $4 billion eight years later. Some failure.
Mark Zuckerberg is 27 years old, and his personal share of the company will make him worth around $28 billion. In his position would you be worrying unduly about what was going to happen to the business in a few years?