GSK acquires TSRO for $75/sh cash—a 182% premium relative to TSRO’s closing price on 11/15/18, the day before Bloomberg cited M&A discussions (#msg-144945059):
TSRO’s main asset is Zejula (one of three approved PARP inhibitors), which is currently selling at an annualized rate of ~$250M based on a narrow label that will likely be expanded.
The nominal deal value is $5.1B.
“The efficient-market hypothesis may be the foremost piece of B.S. ever promulgated in any area of human knowledge!”