Dynavax Technologies (DVAX) Stock After the Bell on Dec. 24, 2025: Sanofi’s $2.2B Buyout, After‑Hours Action, and What to Watch Before the Next Market Open

Dynavax Technologies Corporation is the standout mover heading into the Christmas break after Sanofi agreed to acquire the vaccine maker in an all-cash deal valued at about $2.2 billion. The transaction price — $15.50 per share in cash — instantly re-framed DVAX from a “biotech fundamentals” story into a deal-arbitrage stock, with trading now anchored around the buyout price. Reuters+2PR Newswire+2

Mergers & Acquisitions · NASDAQ:DVAX · NYSE:SNY
Intel Stock Slides as Nvidia Pauses 18A Testing; Nike Jumps on Tim Cook Buy and Dynavax Soars on Sanofi Deal

Intel Stock Slides as Nvidia Pauses 18A Testing; Nike Jumps on Tim Cook Buy and Dynavax Soars on Sanofi Deal

U.S. stocks were largely flat in thin, holiday-shortened trading on Wednesday, December 24, 2025, with investors watching whether the market can extend a year-end “Santa Claus rally” even as headlines moved individual names sharply. The S&P 500 hovered near its all-time highs after a record close the prior session, while standout moves centered on three widely followed companies: Intel, Nike, and Dynavax Technologies. Reuters
24 December 2025
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Dynavax Technologies (DVAX) Stock Jumps on Sanofi’s $2.2B Cash Buyout Offer: Latest News, Forecasts, and What Comes Next (Dec. 24, 2025)

Dynavax Technologies (DVAX) Stock Jumps on Sanofi’s $2.2B Cash Buyout Offer: Latest News, Forecasts, and What Comes Next (Dec. 24, 2025)

Dynavax Technologies Corporation is the center of the biotech tape on Wednesday, December 24, 2025, after Sanofi announced a deal to acquire the vaccine maker in an all-cash transaction valued at roughly $2.2 billion. The headline number investors are keying on: $15.50 per share in cash—a bid that reframes the near-term outlook for DVAX stock from “earnings and pipeline execution” to “deal timeline and closing risk.” Sanofi+1
24 December 2025
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EU Stock Markets Today (24 December 2025): STOXX 600 Flat on Christmas Eve as BP Castrol Deal, Sanofi’s Dynavax Move and Record Metals Set the Tone

EU Stock Markets Today (24 December 2025): STOXX 600 Flat on Christmas Eve as BP Castrol Deal, Sanofi’s Dynavax Move and Record Metals Set the Tone

EU stock markets traded in a distinctly “holiday mode” on Wednesday, December 24, 2025, with liquidity thinning sharply as several exchanges either closed entirely or ran shortened sessions for Christmas Eve. The STOXX 600—a widely followed pan-European benchmark that investors often use as a proxy for the region—was flat at 588.93 by 08:09 GMT, pausing after a run of fresh highs earlier in the week. Reuters
24 December 2025
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Breakthrough Cures, Billion-Dollar Bets & Health Shockers – Global Biotech & Health News Roundup (Aug 23–24, 2025)

Breakthrough Cures, Billion-Dollar Bets & Health Shockers – Global Biotech & Health News Roundup (Aug 23–24, 2025)

Sources: FDA and company announcements via Reuters reuters.com reuters.com reuters.com reuters.com; FiercePharma and Reuters on industry moves reuters.com reuters.com; Pharmaceutical Executive on XtalPi deal prnewswire.com pharmexec.com; Reuters Health Rounds and JAMA Oncology for GLP-1 study reuters.com reuters.com; Reuters on injection coating and microbeads reuters.com reuters.com; Reuters on AAP vs HHS vaccine policy reuters.com reuters.com; Reuters on WHO budget and reorganization reuters.com reuters.com; ABC7 and KFF Health News on Legionnaires’ outbreak and legal action abc7ny.com abc7ny.com.
24 August 2025
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