Looks like engineers were offered 10k-35k shares at a $9.90 strike price in Jan of 2014.
So $250k - $875k. Not bad, but also not millionaire status. Also ISO's will be taxed heavily.
That means, today, those grants are at least 100k - 350k shares at a $0.99 strike price (assuming no other splits). Or $2,300,000 to $8,050,000.
Unless I'm missing something?
Edit: Ah the numbers above are actually too low. If you look that email also lists the percentages. 10,000 shares at that time was 0.022% which at the current valuation is actually $5,280,000 less some likely dilution.