Vesting makes no sense in your case, since the work is already done. I would recommend you get shares now, in writing, properly done. Not at some future time.

Vesting makes no sense in your case, since the work is already done. I would recommend you get shares now, in writing, properly done. Not at some future time. While on paper, getting 1% after the VC round sounds better, because you won't be diluted, in practice, what will happen is that the VC will tell the founders: "as a condition for my investment, you need to clean your cap table and renege on your promise to that person". Whereas if you already got your shares now, there isn't much the VC can do (except natural dilution). Summary: get on the cap table now. It's now or never.