Exhibit 99.1 Omeros Corporation Reports Fourth Quarter and Year-End 2025 Financial Results – Conference Call Today at 4:30 p.m. ET SEATTLE, WA – March 31, 2026 – Omeros Corporation (Nasdaq: OMER) today announced recent highlights and developments as well as financial results for the fourth quarter and year ended December 31, 2025, which include: Fourth Quarter and Recent Highlights ● On November 25, 2025, we closed the previously announced transaction with Novo Nordisk Health Care AG ("Novo Nordisk"). Pursu ...