Accessibility Menu

Why Dynavax Stock Soared Today

A healthcare titan wants to buy the biotech's vaccines.

By Joe Tenebruso Dec 24, 2025 at 3:35PM EST

Key Points

  • Sanofi is launching an all-cash tender offer for Dynavax's shares.
  • The French pharma giant's bid comes at a sizable premium to Dynavax's recent closing price.

Premium Investing Services

Invest better with The Motley Fool. Get stock recommendations, portfolio guidance, and more from The Motley Fool's premium services.