I would suggest talking with your funder ASAP. They will know how to deal with this and will be motivated to help. They can also pressure the CEO in a way that

I would suggest talking with your funder ASAP. They will know how to deal with this and will be motivated to help. They can also pressure the CEO in a way that you cannot. It may blow things up, but I think it's your best chance at survival. Just my 2¢ as a guy on the internet with an opinion!