- You are being screwed. This has been amply covered. - You are worth your weight in gold. If you really work 10 hours a day, hang out with your family then work into the late night... you are every CTO/VP of Engineering's wet dream. - You have rights. The law, in many places, is built to protect people like you from exploitative situations like this. Just looking at a glance, it seems like you could - if you so chose - bring this guy to court and walk away with a more equitable amount of compensation [INTERNET CAVEAT MACHINE ALERT: I am not a lawyer and this is not legal advice.] - You deserve better. With your work ethic and your attitude I hope the next group of people you work with give you your dues