What to do in an equity disagreement in a startup
brk: I don't have time to type out a long answer, so forgive me if this brief version comes off too harsh.It seems like you haven't had a success yet with another startup, and a solid track record will, over time, be far more valuable than the 4% you're squabbling over.Concentrate on making the company work (but also make it clear you don't intend to give up any more equity).  Use this as a learning experience, and go into your next company stronger and wiser.Given the very frail odds of success most startups have, it is likely not worth your time obsessing over this.