Dynavax Technologies (DVAX) Stock Jumps on Sanofi’s $2.2B Cash Buyout Offer: Latest News, Forecasts, and What Comes Next (Dec. 24, 2025)
Sanofi announced a deal to acquire Dynavax Technologies for $2.2 billion in cash, offering $15.50 per share—a 39% premium to Dynavax’s prior close. DVAX stock jumped about 37% premarket to near the offer price. Dynavax’s board approved the transaction. Closing is expected in Q1 2026, pending regulatory and shareholder approvals.