> As other said, he doesn't just want to give 10%, he wants you to give 5%. Another way of framing this is that the co-founder wants OP to just grant him contr

> As other said, he doesn't just want to give 10%, he wants you to give 5%. Another way of framing this is that the co-founder wants OP to just grant him control of the company by switching from the original 50-50 arrangement to a 45-55 arrangement.