Frank Vinluan put together a dandy piece that covers a lot of business, ranging from the science to finance. Here is one tidbit that I have not seen elsewhere:
"Forty Seven has agreed to a “no shop” provision that bars the company from pursuing another offer, according to a securities filing. But under certain circumstances, Forty Seven may provide information to and speak with another party that has submitted an acquisition proposal that its board deems a superior offer, according to the merger agreement. These steps would be taken to comply with the board’s fiduciary duty to shareholders. If Forty Seven accepts a better offer, the merger agreement with Gilead requires it pay the larger company a $160 million termination fee."