Dynavax stockholders to receive $15.50 in cash, a 39% premium to Dynavax closing share price on
December 23, 2025
EMERYVILLE, Calif., Dec. 24, 2025 /PRNewswire/ -- Sanofi announced today that it has entered into an agreement to acquire Dynavax Technologies Corporation (Nasdaq: DVAX), a publicly traded vaccines company with a marketed adult hepatitis B vaccine (HEPLISAV-B®) and a differentiated shingles vaccine candidate. The acquisition augments Sanofi's presence in adult immunization by bringin