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Biogen Inc. (BIIB)
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Biogen Inc. (BIIB) SEC Filings

Filing links are provided when reliable SEC filing data is available.

Recent Filings

FormFiling DateAcceptedDocument
SC 13G/AJun 5, 2026Jun 5, 2026View filing
SC 13D/AMay 14, 2026May 14, 2026View filing
8-KMay 14, 2026May 14, 2026View filing
SC TO-T/AMay 14, 2026May 14, 2026View filing
SC TO-T/AMay 12, 2026May 12, 2026View filing
SC TO-T/AMay 6, 2026May 6, 2026View filing
SC 13G/AMay 6, 2026May 6, 2026View filing
4May 5, 2026May 5, 2026View filing
SC 13GApr 29, 2026Apr 29, 2026View filing
10-QApr 29, 2026Apr 29, 2026View filing
8-KApr 29, 2026Apr 29, 2026View filing
ARSApr 28, 2026Apr 28, 2026View filing
DEFA14AApr 28, 2026Apr 28, 2026View filing
DEF 14AApr 28, 2026Apr 28, 2026View filing
SC TO-TApr 14, 2026Apr 14, 2026View filing
SC TO-CApr 7, 2026Apr 7, 2026View filing
3Apr 6, 2026Apr 6, 2026View filing
SC 13DApr 6, 2026Apr 6, 2026View filing
8-KApr 6, 2026Apr 6, 2026View filing
SC TO-CApr 3, 2026Apr 3, 2026View filing
4Apr 3, 2026Apr 3, 2026View filing
SC TO-CMar 31, 2026Mar 31, 2026View filing
8-KMar 31, 2026Mar 31, 2026View filing
SC TO-CMar 31, 2026Mar 31, 2026View filing
SC 13G/AMar 26, 2026Mar 26, 2026View filing
8-KMar 11, 2026Mar 11, 2026View filing
4Feb 17, 2026Feb 17, 2026View filing
4Feb 17, 2026Feb 17, 2026View filing
4Feb 17, 2026Feb 17, 2026View filing
4Feb 17, 2026Feb 17, 2026View filing

About Biogen Inc.

Biogen Inc. is a leading biotechnology firm dedicated to the discovery, development, production, and distribution of treatments for complex neurological and neurodegenerative conditions. Its established portfolio includes a range of medications addressing multiple sclerosis (MS), such as TECFIDERA, VUMERITY, AVONEX, PLEGRIDY, TYSABRI, and FAMPYRA. For spinal muscular atrophy (SMA), Biogen provides SPINRAZA, while FUMADERM is available for the treatment of plaque psoriasis. Among its other key offerings is ADUHELM, specifically developed for Alzheimer's disease. The company also markets a selection of biosimilar drugs, including BENEPALI (an etanercept biosimilar akin to ENBREL), IMRALDI (an adalimumab biosimilar comparable to HUMIRA), and FLIXABI (an infliximab biosimilar referencing REMICADE). Further extending its therapeutic reach, Biogen supplies RITUXAN, prescribed for conditions like non-Hodgkin's lymphoma, chronic lymphocytic leukemia (CLL), rheumatoid arthritis, certain types of ANCA-associated vasculitis, and pemphigus vulgaris. RITUXAN HYCELA targets non-Hodgkin's lymphoma and CLL, and GAZYVA is utilized for CLL and follicular lymphoma. OCREVUS addresses both relapsing and primary progressive forms of MS, complementing the company's broader efforts in anti-CD20 therapies. The company maintains a robust research and development pipeline, featuring numerous investigational therapies. These candidates are designed to tackle a wide spectrum of conditions, including multiple sclerosis and neuroimmunological disorders (e.g., BIIB135, BIIB061, BIIB091, BIIB107), Alzheimer's disease and other forms of dementia (e.g., Aducanumab, Lecanemab, BIIB076, BIIB080), neuromuscular disorders (e.g., BIIB067, BIIB078, BIIB105, BIIB100, BIIB110), Parkinson's disease and related movement disorders (e.g., BIIB124, BIIB094, BIIB118, BIIB101, BIIB122), neuropsychiatric conditions (e.g., BIIB125, BIIB104), immunology-related illnesses (e.g., Dapirolizumab pegol, BIIB059), acute neurological events (e.g., BIIB093, BIIB131), and neuropathic pain (e.g., BIIB074). Additionally, several biosimilar candidates, such as BYOOVIZ, BIIB800, and SB15, are progressing through various developmental stages. Biogen actively engages in strategic collaborations and licensing arrangements with various partners, including Acorda Therapeutics, Inc., Alkermes Pharma Ireland Limited, Denali Therapeutics Inc., Eisai Co., Ltd., Genentech, Inc., Neurimmune SubOne AG, Ionis Pharmaceuticals, Inc., Samsung Bioepis Co., Ltd., Sangamo Therapeutics, Inc., and Sage Therapeutics, Inc. Established in 1978, Biogen Inc. maintains its corporate headquarters in Cambridge, Massachusetts.

Cambridge, MA
7,605 employees
Healthcare / Drug Manufacturers - General
Sector
Healthcare
Industry
Drug Manufacturers - General
CEO
Christopher A. Viehbacher