. . Under the agreement, Biogen will purchase approx. 6 buy. 2 million newly issued shares of Sage for $ 104. 14 apiece, a 26% premium over Wednesday's closing price from Sage. Except for the $ 1. With 525 billion cash, Sage can also get up to $ 1. 6 billion potential milestone payments. The companies will develop and sell Zuranolon, an oral therapy being developed to treat major depression (MDD) and postpartum depression.