Follow-on roundup: ImmunoGen, Mirati, Zymeworks, Viking, OptiNose

By Paul Bonanos | Jun 8, 2018 | 3:16 PM GMT

ImmunoGen Inc. (NASDAQ:IMGN), Mirati Therapeutics Inc. (NASDAQ:MRTX), Zymeworks Inc. (NYSE:ZYME; TSX:ZYME), Viking Therapeutics Inc. (NASDAQ:VKTX) and OptiNose Inc. (NASDAQ:OPTN) each priced follow-ons, raising a total of more than $465 million.

ImmunoGen raised $150.7 million through the sale of 13.7 million shares at $11