"EDIT: He's not asking me to leave now, since I'm still desperately needed, but in 3-6 months time after we have raised more funding."
Means they do actually need you, the CTO is waiting for a payday before kicking you out for a higher stake. Tell the CTO to go stick it if they need you before funding but not after.
Means they do actually need you, the CTO is waiting for a payday before kicking you out for a higher stake. Tell the CTO to go stick it if they need you before funding but not after.