(DumbMoney)

Explore the latest updates and key analyses on companies, markets, and industry trends.


Sanofi to Acquire Dynavax, Adding HEPLISAV-B Vaccine and Shingles Candidate to Pipeline

Sanofi (DVAX) | December 24, 2025

By Kevin Allen

image

Sanofi announced the acquisition of Dynavax Technologies Corporation, a vaccines company with HEPLISAV-B and a shingles vaccine candidate.

Dynavax's HEPLISAV-B vaccine offers a two-dose regimen for hepatitis B, providing faster seroprotection than current vaccines.

The acquisition aims to enhance Sanofi's presence in adult immunization and address public health needs.

Sanofi, a leading pharmaceutical company, is acquiring Dynavax to bolster its vaccine portfolio, particularly focusing on HEPLISAV-B and a shingles vaccine candidate. This strategic move aligns with Sanofi's goal of expansion in the vaccines market, targeting improved adult immunization rates and addressing critical public health challenges.

Premium Acquisition

Sanofi is set to acquire Dynavax at $15.50 per share in cash, representing a substantial 39% premium over Dynavax's closing price. This premium underscores the strategic value Sanofi places on integrating Dynavax's capabilities into its portfolio.

Vaccine Portfolio Expansion

The acquisition will enrich Sanofi's vaccine offerings by incorporating unique products like HEPLISAV-B and the shingles candidate. HEPLISAV-B's differentiated two-dose regimen for hepatitis B stands out for its rapid seroprotection compared to existing vaccines, providing a competitive edge in the market.

Public Health Focus

Through this acquisition, Sanofi aims to address unmet adult vaccination opportunities and cater to public health needs. By leveraging Dynavax's vaccines targeting prevalent health issues such as hepatitis B and shingles, Sanofi demonstrates a commitment to enhancing public health outcomes through innovative immunization solutions.

  • The acquisition reflects Sanofi's strategic vision of strengthening its position in the adult immunization segment, tapping into the growing demand for improved vaccination coverage in the adult population.
  • HEPLISAV-B and the shingles vaccine candidate offered by Dynavax align with key public health priorities in the United States, focusing on diseases with significant impact on patient populations. This strategic alignment positions Sanofi to deliver impactful solutions for critical health challenges.
  • Sanofi's extensive global presence and robust development capabilities are poised to amplify the market penetration and clinical advancement of Dynavax's vaccines, extending the reach and effectiveness of these vital immunization products.

Sanofi's acquisition of Dynavax represents a strategic step towards expanding its vaccine portfolio, addressing public health imperatives, and reinforcing its adult immunization capabilities. By integrating HEPLISAV-B and the shingles vaccine candidate, Sanofi is poised to accelerate its impact on public health outcomes and strengthen its competitive position in the vaccines market.