Business Description

NATURE OF OPERATIONS Company Overview VYNE Therapeutics Inc. (the "Company") is a clinical-stage biopharmaceutical company focused on developing differentiated therapies to treat inflammatory and immune-mediated conditions with high unmet need. The Company has exclusive worldwide rights to research, develop and commercialize products containing small molecule bromodomain and extra-terminal domain (“BET”) inhibitors for the treatment of any disease, disorder or condition in humans, which the Company licensed from Tay Therapeutics Ltd., formerly known as In4Derm Ltd ("Tay"). Through its transaction with Tay, the Company obtained access to a library of new small molecule BET inhibitor compounds, including those that inhibit both BD1 and BD2 (“pan-BD” BET inhibitor) and that selectively inhibit BD2 (“BD2-selective” BET inhibitor). Through its access to this library of new small molecule BET inhibitors, the Company plans to develop product candidates for a diverse set of therapeutic indications. The Company has chosen to initially focus its development efforts with these molecules on immune-mediated inflammatory diseases, which are not being targeted by current BET inhibitors in development. VYNE is developing VYN202, an oral, small molecule BD2-selective BET inhibitor. VYN202 has been designed to achieve potential class-leading potency and selectivity for BD2 vs. BD1. By maximizing BD2 selectivity, the Company believes VYN202 has the potential to be a potent oral immunomodulator option for both acute control and chronic management of immune-mediated inflammatory conditions, without the hematologic and gastrointestinal adverse effects associated with earlier generation systemic pan-BD BET inhibitors that were being developed in oncologic settings. The Company has completed a Phase 1a single ascending dose/multiple ascending dose ("SAD/MAD") trial of VYN202 in healthy volunteers and announced positive data from this trial in December 2024. The Company initiated a Phase 1b trial in February 2025 in adult subjects with moderate-to-severe plaque psoriasis. In April 2025, the FDA verbally placed a clinical hold on the Company’s Phase 1b trial evaluating VYN202 in subjects with moderate-to-severe plaque psoriasis following an observation of testicular toxicity in dogs from a non-clinical toxicology study of VYN202. In June 2025, the FDA lifted the clinical hold for two doses of VYN202 for female subjects and indicated that sufficient data from a 12-week non-clinical toxicology study of VYN202 in dogs would be required in order to resume studies in male clinical subjects. Following the clinical hold, the Company made the decision to unblind the clinical data from the subjects who were enrolled in the trial. Based on interim unblinded clinical data from the Phase 1b trial, together with promising results from multiple preclinical models, the Company terminated the Phase 1b psoriasis trial in support of continued advancement of VYN202 into other serious, immune-mediated diseases with more limited effective treatment options. In October 2025, we initiated the repeat non-clinical toxicology study of VYN202 in male dogs to remedy the partial hold in male clinical subjects. The study is expected to be completed in the second half of 2026, with a final report expected in the fourth quarter of 2026. Until July 2025, the Company's lead product was repibresib gel (also known as VYN201), a topically administered, small molecule pan-bromodomain (“BD”) BET inhibitor designed as a “soft” drug to address diseases involving multiple, diverse inflammatory cell signaling pathways while providing low systemic exposure. The Company announced positive results from a Phase 1b trial evaluating repibresib in nonsegmental vitiligo in October 2023 and initiated a Phase 2b trial in nonsegmental vitiligo in June 2024. In July 2025, the Company announced that the trial did not meet its primary endpoint of the proportion of subjects achieving an improvement in Facial Vitiligo Area Scoring Index of at least 50% from baseline (“F-VASI50”) at week 24 compared to vehicle. Based on these data, the Company discontinued the ongoing extension phase of the trial and terminated the trial. In August 2025, our board of directors initiated a strategic review to evaluate a range of options to maximize stockholder value, including the assessment of our internal pipeline, financing opportunities and strategic alternatives.…