Châtillon, France, February 28, 2026 DBV Technologies Highlights Additional Data from Successful Phase 3 VITESSE Study at the AAAAI 2026 Annual Meeting Approximately 83% of children treated with the VIASKIN® Peanut Patch increased their eliciting dose at month 12, compared to approximately 48% in the placebo group Approximately 60% of children treated with the VIASKIN® Peanut Patch increased their eliciting dose by at least two doses at month 12, compared to 23% in the placebo group 24% of children on placebo decreased their eliciting dose between the baseline and month 12 double-blind, placebo-controlled food challenge, compared to only 6.4% of children treated with the VIASKIN® Peanut Patch DBV Technologies (Euronext: DBV – ISIN: FR0010417345 – Nasdaq Stock Market: DBVT), a late-stage biopharmaceutical company, today announced that the company shared additional positive data from the successful Phase 3 VITESSE clinical trial as an oral presentation today at the American Academy of Allergy, Asthma, and Immunology (AAAAI) 2026 Annual Meeting, in Philadelphia, PA. VITESSE, the largest food allergy immunotherapy trial to date, is a Phase 3 study assessing DBV's VIASKIN® Peanut Patch for the treatment of peanut-allergic children aged 4 to 7 years.