weigh this against his salary too, if he is making a competitive salary, then 0% ownership. I would say 25% is high, go for 10-15% if he will take it. You wont

weigh this against his salary too, if he is making a competitive salary, then 0% ownership. I would say 25% is high, go for 10-15% if he will take it. You wont have much of the company to work with should you seek investors.