From what I've seen anything over 5% is usually ridiculous. At least for startups on a track to a billion $ valuation, most startups of this caliber (or that se

From what I've seen anything over 5% is usually ridiculous. At least for startups on a track to a billion $ valuation, most startups of this caliber (or that see themselves as being of this caliber, key point) will be in situations where each cofounder has 1-2% at most and the rest is kept aside for later rounds, employees, eventually going public, etc. Your mileage may vary, but that is what I've seen.