Key facts: Sanofi to acquire Dynavax for $2.2B; FDA issues letter on Tolebrutinib

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2025.12.25 02:03
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Sanofi will acquire Dynavax Technologies for $2.2 billion, paying $15.50 per share, a 39% premium. The deal, enhancing its vaccine portfolio, is set to close in Q1 2026.123Sanofi received a Complete Response Letter from the FDA regarding its New Drug Application for Tolebrutinib, intended for non-relapsing secondary progressive multiple sclerosis treatment.4Sanofi announced that a recent deal is expected to have no impact on its guidance for 2025.5