RE:Not sure why everyone is complaining I agree with your comments;
IMO: 2 possible scenarios:
1) merger with a smaller US company: Possible reason for silence, to avoid drop in SP (share price), and more loss in their pocket (i.e. golden parachutes, options, ....)
2) Buyout by IPSEN. Can't understand why they don't anounce a negogiation going with IPSEN, this will boost the SP, to the level where management can have a higher deal amount;
Many questions on the table...