United Therapeutics Corp., one of the region's largest bioscience firms, is planning a major expansion of its Silver Spring campus with plans to hire about 100 employees in the next three to six years.
The publicly traded firm, with about 200 D.C.-area employees and $340 million in net income in 2014, wants to develop a six-story building at the southwest corner of Spring Street and Colesville Road connecting to its existing corporate presence in the immediate area. The 121,724-square-foot building, to include new office, lab and retail space, would be developed on the site of what is now a Montgomery County-owned, three-story parking garage that is under contract for sale to United Therapeutics (NASDAQ: UTHR).