If he wasn't a real founder, it would be very rare for him to start with more than 1% and that wouldn't be anywhere near that after ~5 years. I doubt he has more than .25% after all the VC funding rounds and the associated dilution.
Then there are the likely VC liquidation preference multipliers where they'll get a larger piece of the pie.
He's been gone since 2010 so I'm guessing any options he had were exercised so it should be long term capital gains. Figure in taxes and take away any previous exercise costs and I bet it's around 1-1.5 million that he's cleared. A nice sum, but definitely not "yacht-and-helicopter money".
Then there are the likely VC liquidation preference multipliers where they'll get a larger piece of the pie.
He's been gone since 2010 so I'm guessing any options he had were exercised so it should be long term capital gains. Figure in taxes and take away any previous exercise costs and I bet it's around 1-1.5 million that he's cleared. A nice sum, but definitely not "yacht-and-helicopter money".