I'd really like to know this since none of the startups I've been involved with have had positive outcomes (buy out, IPO, merger etc).

If you're part of the 10-20% employee ownership, assuming that you have an "average" stake, what percentage of the overall deal do you usually walk away with?

I'm expecting this number to be painfully small and hardly f#ck you money, but I'd like to hear from those who have direct experience on this.

NOTE: I'm not asking about founder exits, because those are adequately covered in the media and other places. I want to know about all the folks who are in that magic 10-20% of employees. Outlier anecdotal evidence (e.g. Google secretaries, Microsoft mail room folks) need not be mentioned. :)