Why Dynavax Stock Soared Today
- - Why Dynavax Stock Soared Today
Joe Tenebruso, The Motley FoolDecember 25, 2025 at 2:25 AM
0
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.
10 stocks we like better than Dynavax Technologies ›
Shares of Dynavax Technologies (NASDAQ: DVAX) popped on Wednesday after the vaccine maker struck a deal to be acquired by Sanofi (NASDAQ: SNY).
As of 3:00 p.m. EST, Dynavax's stock price was up more than 38%.
Where to invest $1,000 right now? Our analyst team just revealed what they believe are the 10 best stocks to buy right now, when you join Stock Advisor. See the stocks »
Medical researchers are working in a lab.
Image source: Getty Images.
An appealing offer for Dynavax's investors
Under the terms of the deal, Sanofi will begin a tender offer to purchase Dynavax's stock for $15.50 per share in cash. That values the biotech at roughly $2.2 billion, a premium of 39% compared to its closing stock price on Tuesday.
The deal is projected to close in the first quarter of 2026.
Joining forces to address unmet healthcare needs
The merger would combine Dynavax's adult hepatitis B vaccine and shingles vaccine candidate with Sanofi's global scale, development expertise, and commercial distribution network.
Dynavax's adult hepatitis B vaccine is administered via a two-dose regimen over a one-month period. It provides protection sooner than other hepatitis B vaccines that are given in three doses over six months.
The hepatitis B virus can cause liver damage and even lead to liver cancer. Nearly 100 million adults born before 1991 are not yet vaccinated against hepatitis B in the U.S. alone.
Dynavax's shingles vaccine candidate is currently in the early stages of clinical development. It aims to offer protection against the viral disease that can cause blistering rashes and long-term nerve pain.
Should you buy stock in Dynavax Technologies right now?
Before you buy stock in Dynavax Technologies, consider this:
The Motley Fool Stock Advisor analyst team just identified what they believe are the 10 best stocks for investors to buy now… and Dynavax Technologies wasn’t one of them. The 10 stocks that made the cut could produce monster returns in the coming years.
Consider when Netflix made this list on December 17, 2004... if you invested $1,000 at the time of our recommendation, you’d have $504,239!* Or when Nvidia made this list on April 15, 2005... if you invested $1,000 at the time of our recommendation, you’d have $1,159,896!*
Now, it’s worth noting Stock Advisor’s total average return is 985% — a market-crushing outperformance compared to 195% for the S&P 500. Don't miss the latest top 10 list, available with Stock Advisor, and join an investing community built by individual investors for individual investors.
See the 10 stocks »
*Stock Advisor returns as of December 24, 2025.
Joe Tenebruso has no position in any of the stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.
Source: “AOL Money”
