A quick Google search for M&A Biotech timeline yielded a couple good things to read. Not that they apply specifically to this situation, but if you're going to play in the biotech world these are things good to know:
My favorite: http://www.nature.com/bioent/2014/140201/full/bioe.2014.1.html - great/new/relevant article based on statistics regarding acquisitions. As mentioned in the article, orphan drug companies are more likely to be acquired at a later stage. Guess where CHTP is? I just wish I had a better understanding of how long between approval and acquisition (which is what I am searching for statistics on).
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