Sanofi to Acquire Dynavax for $15.50 Per Share in Cash

Reuters
2025.12.29 12:32
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Sanofi has agreed to acquire Dynavax Technologies for $15.50 per share in cash, a 39% premium over Dynavax’s closing price on December 23, 2025. The acquisition will enhance Sanofi's adult immunization portfolio with Dynavax’s hepatitis B vaccine and a shingles vaccine candidate. The deal, approved by Dynavax’s board, is expected to close in Q1 2026, pending customary conditions, and will be funded by Sanofi's cash resources.