<a href="http:&#x2F;&#x2F;esofund.com&#x2F;" rel="nofollow">http:&#x2F;&#x2F;esofund.com&#x2F;</a> does this. It is getting common. With sky-high valuations, the Fair Market Value (FMV) for many startups stock are very high. Although the percentage returns on this might be high, an average engineer needs large amount of cash to play this game. Some firms have come up which help with the &quot;seed&quot; money.