Biomea Fusion is trading 15.28% lower at $1.44 after announcing a proposed underwritten public offering of common stock and pre-funded warrants on September 22, 2026. - The underwriter may purchase up to 15% additional securities under a 30-day option, adding potential dilution pressure. - Coverage reported a sharp after-hours decline. The broader market is modestly higher, so the drop appears company-specific. Confidence is medium, based on company-release coverage and financial news reporting.