Onyx has decent pipeline with 3 approved cancer drugs. They also have a piece of Pfizer's breast cancer drug if it gets approved. I believe Onyx will recieve 8% royalty.
AMGN is going to walk away and leave the BOD stroking themselves
Highly possible but I doubt they will walk away, besides there are other suitors interested. I have a very small position, got in late in the game so it doesn't really matter which way the deal goes.