NOT MERGER OR TAKEOVER! Federal Regulation states that if it is over $50 million, they must report. These types of acquisitions require significant documentation and approvals through different channels so it is impossible to release the appropriate information immediately.
What I have not seen anyone post is Zogenix's new patent. I will give you a clue, they received it May 6th.
Another clue: It has to do with a locking mechanism, which allows safer administration
Last clue: It uses their needleless injection technology.