Exhibit 99.1 XOMA Royalty Reports Third Quarter and Year to Date 2025 Financial Results and Highlights Recent Business Achievements Business development: Secures royalty economic interests in two early stage partnered assets through XOMA Royalty's announced expected acquisition of LAVA Therapeutics. Company acquisitions: •Completed XOMA Royalty's acquisitions of Turnstone Biologics and HilleVax; • announced acquisitions of LAVA Therapeutics and Mural Oncology; • acted as structuring agent for XenoTherapeuti ...