The buyback comes as the French drugmaker said that its sales and earnings for the fourth quarter rose.
Sanofi said its amlitelimab drug confirmed its potential to treat eczema in patients 12 years and older in two late-phase studies.
SNY wins EU approval for Teizeild, the first disease-modifying drug to delay stage 3 type 1 diabetes in adults and children aged eight and older.
Sanofi wins FDA priority review to expand Tzield's use to children as young as one, aiming to delay type 1 diabetes progression.
The company said the regulator accepted a priority review to potentially expand the current age range for its Tzield type-1 diabetes drug to include children as young as one year old.
SNY's $2.2 billion deal for Dynavax adds Heplisav-B, a shingles candidate, and other vaccine programs, strengthening its adult vaccine franchise and pipeline.
French pharmaceutical giant Sanofi SA said on Wednesday it has agreed to acquire US-based vaccines company Dynavax Technologies Corp in a $2.2 billion deal, strengthening its presence in the adult immunization market. Under the agreement, Sanofi will launch a cash tender offer of $15.50 per Dynavax share, representing a 39% premium to the company's pre-deal stock price.
French drugmaker Sanofi has entered into an agreement to acquire U.S. vaccines company Dynavax Technologies Corporation for around $2.2 billion (1.87 billion euros), it said on Wednesday.
The cash deal seeks to strengthen the French drugmaker's immunization portfolio after it suffered setbacks in clinical trials.
Sanofi gains EMA Orphan Drug status for efdoralprin alfa, a phase II biologic for AATD-related emphysema with promising dosing data.
Sanofi shares slide after the FDA again delays its review of its MS drug tolebrutinib, and a phase III study fails to hit its primary endpoint.
South Korea-based ADEL said late on Monday that it has entered a $1.04 billion partnership with French drugmaker Sanofi to develop and sell the biotech company's experimental Alzheimer's disease treatment.