Xenon(XENE) - 2025 Q4 - Annual Results

Exhibit 99.1 Xenon Reports Q4 and Full Year 2025 Financial Results and Provides Business Update VANCOUVER, British Columbia and BOSTON, MA, Feb 26, 2026 – Xenon Pharmaceuticals Inc. (Nasdaq: XENE), a neuroscience-focused biopharmaceutical company dedicated to drug discovery, clinical development, and commercialization of life-changing therapeutics for patients in need, today reported financial results for the fourth quarter and full year ended December 31, 2025 and provided a business update. "2025 marked a ...