Biogen Completes Acquisition of RayThera Inc.
Biogen announced the completion of its acquisition of RayThera Inc., a privately held biotechnology company focused on discovering and developing small-molecule therapies in immunology. The announcement was made from Cambridge, Mass., on Aug. 06, 2026.
Why it matters — The completion of the acquisition expands Biogen's pipeline into immunology through RayThera's small-molecule therapy programs.