Now there is a CTO coming on board with a set salary you have a benchmark to compare yourself against. I would write an e-mail to say that you are wrapping thi

Now there is a CTO coming on board with a set salary you have a benchmark to compare yourself against. I would write an e-mail to say that you are wrapping things up and at the end of this week will be done. If they act surprised or demand you to work for the next two weeks tell them sure but you'll be billing them at a daily rate (regardless of if work takes place if you're a CTO, you're on call) and send over a standard contract. They will never discuss your worth unless they are put in a difficult position where they have to. Do not do any more work until you have a signed contract. If they never sign it then you're done. Don't stay on as an advisor unless it's something you really love, it will just make you mad to have put in so much effort and never have been compensated in return.