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Sanofi Completes Acquisition of Dynavax Technologies for $2.2 Billion

Dynavax Technologies acquired by Sanofi

AcquisitionUSD2,200,000,000Manufacturing

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Acquired

Dynavax Technologies

Biotechnology Research

Deal value

USD2,200,000,000

December 24, 2025

Sanofi logo
Acquirer

Sanofi

Pharmaceutical Manufacturing

Sanofi has acquired Dynavax Technologies for $2,200,000,000, a move designed to expand its footprint in the infectious disease vaccine market. This corporate acquisition signals a strategic investment by Sanofi into a commercial-stage biopharmaceutical company known for its innovative vaccine development.

Dynavax Technologies specializes in developing and commercializing vaccines aimed at protecting against infectious diseases. The company's key commercial products include HEPLISAV-B® vaccine, an adjuvanted hepatitis B vaccine approved for adults in the U.S., the European Union, and the United Kingdom. Additionally, Dynavax developed the CpG 1018® adjuvant, a component utilized in HEPLISAV-B and various adjuvanted COVID-19 vaccines. The acquisition also brings a Phase 1/2 shingles candidate into Sanofi's development pipeline.

The acquisition is strategic for Sanofi as it strengthens its vaccine portfolio with established, commercialized products and proprietary adjuvant technology. Dynavax's expertise in innovative vaccine solutions and its existing market presence with HEPLISAV-B provide immediate value and complement Sanofi's global capabilities in pharmaceuticals and vaccines. This move is expected to enhance Sanofi's offerings in preventative medicine.

Expected synergies from this acquisition include leveraging Sanofi's extensive research, development, and global distribution network to further scale and commercialize Dynavax's vaccine assets. The integration aims to accelerate the development of future vaccine candidates and expand access to critical preventative treatments worldwide. The combined entity is poised to strengthen its commitment to addressing global public health challenges through a more robust and diversified vaccine pipeline.

Buying signals & intent

Our AI suggests Dynavax Technologies may be interested in:

Clinical Trial Management Software (CTMS)
Laboratory Information Management Systems (LIMS)
Pharmaceutical Supply Chain Management
Enterprise Resource Planning (ERP) Software
Regulatory Compliance Software
Cybersecurity Solutions
CRM for Healthcare Professionals
Cloud Computing Services

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