Amgen will invest an additional $300 million in its U.S. manufacturing network to further advance U.S.-based production capacity, enhance next-generation technologies and support a reliable supply of medicines for patients. This investment in Puerto Rico builds on Amgen’s broader U.S. manufacturing expansion strategy. Over the past year, the company has announced planned investments of $650 million in Puerto Rico, $900 million in Ohio and $600 million in a science and innovation center in Cal...