[joshmlewis]

Disclaimer: I'm not a lawyer or expert in the matter, but I am a startup founder that recently went through all of the formation and stock issuance steps.

As far as I know, there are common definitions between the types of stock but it's always best to consult your corporate documents, and more specifically the stock issuance documents, that you should have signed when you started with the company. Generally there's common and preferred stock with founders getting common and investors getting preferred.

There really isn't an official meaning for 'cofounder' status either. If you're on the founding team then you're typically considered as such and should have the proportion of equity to go along with it.

I'd suggest reading through your stock issuance agreement and it should tell you what you're looking for. If the documents aren't standard then there could be all sorts of complexities and a lawyer would be good to consult at that point.

Edit: this gives a good perspective, http://www.alleywatch.com/2013/08/what-is-founders-stock-leg....

[tmaki]

This gives me some relief. Great answer, thank you very much