Galena Biopharma (originally RXi Pharmaceuticals) was a publicly traded pharmaceutical company based in San Ramon, California. The company was founded in Worcester, Massachusetts. In 2011, it moved to Oregon, and in 2015 moved to San Ramon, California. Mark Schwartz was the company's president and chief executive officer. As of December 29, 2017, the company was acquired by Sellas Life Sciences Group Ltd. through a reverse merger transaction. Galena Biopharma was renamed to Sellas Life Sciences Group, Inc (Nasdaq: SLS).