There's some good advice here, but so far no one has said the most important thing, which is to clarify for yourselves what your other best option is. (In MBA

There's some good advice here, but so far no one has said the most important thing, which is to clarify for yourselves what your other best option is. (In MBA jargon, your "BATNA" -- Best Alternative to a Negotiated Agreement). This is not just theory, it's dealmaking 101. You simply have no leverage to get what you want (fast closure, price, etc) unless you have an external forcing function you can credibly threaten to move forward with -- one that you must be prepared to accept if they call your bluff. Based on circumstances -- it could be a term sheet, a public launch, a partnership with someone threatening to BigCo, etc. But figure out what it is, put a time frame on it, and make them aware of it. Based on your questions, I'd also suggest bringing an advisor in who knows what they are doing to help you sort through what you should and should not reveal at this point. (Why would they want to review your code if it's an acquihire??)