I think they both own restricted stock units that are repurchased by the company at nominal values if the employee leaves or violates certain terms.
Being an "idea person" is not comparable to being an "implementer." Truly exceptional individuals can be both, but I'm willing to wager that this whole venture was OP's idea, thus making him the "one true founder."
Diplomacy would be best for OP, but they shouldn't close the door on exploring their legal options. Especially if they have anything dated or timestamped that clearly establishes them as the originator of the idea or concept.
All in all, this is a valuable lesson for OP and they will walk away from the experience with wisdom to help them in their future ventures. Best of luck, OP.
So would Bill Gates, Mark Zuckerberg, Larry Page and Sergey Brin not count as bosses, visionaries or founders?
And just a reminder for you, per https://news.ycombinator.com/newsguidelines.html:
> Please respond to the strongest plausible interpretation of what someone says, not a weaker one that's easier to criticize. Assume good faith.
Edit: Response to swatcoder since I am rate-limited to 5 posts per day:
I really appreciate your response. Intuition is the perfect way to put it.
I am aware that the burden of proof lies on me, since I made the claim. I am 100% being intellectually lazy by not seeking out data to support my claim. My intuition is just a hypothesis that could very well turn out to be incorrect.
I am wagering that it is correct, just as other people are free to wager that it is incorrect. Downvotes seem to be a harsher way to express that, but your comment is much more constructive.
At any time, there are tens of thousands of startups bubbling through their first 6 months or year of development. The composition of who's an "idea person" and who's an "implementor" will be in pretty much every permutation you can imagine.
Now, it may be that the few startups that grow to conquer the world had a certain composition in their early years, but that really has nothing to do with the company the OP is involved in.
> Likewise. If their co-whatever wrote all the code, they sound like the employee. Bosses, visionaries, and founders typically don't write code, they delegate it to people who do.
I think it is a fair criticism to your comment... the comment made it sound like writing code precludes someone from being a founder/owner. Pointing out examples where founders/owners wrote code shows the statement isn't true. The fact that the other cofounder wrote all the code has no bearing on whether they are a real founder or not.