Biogen Completes Acquisition of RayThera, Expanding Immunology Portfolio

CAMBRIDGE, Mass., Aug. 06, 2026 (GLOBE NEWSWIRE) -- Biogen Inc. (Nasdaq: BIIB) today announced the completion of the acquisition of RayThera Inc., a privately held biotechnology company focused on discovering and developing small-molecule therapies in immunology.

The acquisition strengthens Biogen’s growing immunology portfolio, adding multiple assets that have potential to treat immune-mediated conditions across a range of indications. The lead program entered Phase 1 development in July 2026.

“We are excited about the potential of these immunology assets as we continue to strengthen and diversify our pipeline for long-term growth,” said Priya Singhal, M.D., M.P.H., Executive Vice President and Head of Development at Biogen. “With the lead program now in Phase 1, this acquisition highlights strong execution on our open innovation model in sourcing external opportunities and reflects our continued investment in immunology as a strategic growth area.”

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Founded in 1978, Biogen is a leading biotechnology company that pioneers innovative science to deliver new medicines to transform patients’ lives and to create value for shareholders and our communities. We apply deep understanding of human biology and leverage different modalities to advance first-in-class treatments or therapies that deliver superior outcomes. Our approach is to take bold risks, balanced with return on investment to deliver long-term growth.

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This press release contains forward-looking statements that are being made pursuant to the provisions of the Private Securities Litigation Reform Act of 1995 (the PSLRA) with the intention of obtaining the benefits of the “Safe Harbor” provisions of the PSLRA. This press release contains forward-looking statements, including relating to: the anticipated benefits of the RayThera Inc. acquisition (the “Acquisition”); our growing immunology portfolio, including the potential strengthening and diversification of our pipeline for long-term growth; our investment in immunology as a strategic growth area; and the anticipated financial impacts of the Acquisition. These forward-looking statements may be accompanied by such words as “aim,” “anticipate,” “assume,” “believe,” “contemplate,” “continue,” “could,” “estimate,” “expect,” “forecast,” “goal,” “guidance,” “hope,” “intend,” “may,” “objective,” “outlook,” “plan,” “possible,” “potential,” “predict,” “project,” “prospect,” “should,” “target,” “will,” “would,” and other words and terms of similar meaning. Drug development and commercialization involve a high degree of risk, and only a small number of research and development programs result in commercialization of a product. Results in early-stage clinical trials may not be indicative of full results or results from later stage or larger scale clinical trials and do not ensure regulatory approval. You should not place undue reliance on these statements. Given their forward-looking nature, these statements involve substantial risks and uncertainties that may be based on inaccurate assumptions and could cause actual results to differ materially from those reflected in such statements.

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