Gossamer Bio
Biotechnology ResearchCalifornia, United States51-200 Employees
Gossamer Bio is a clinical-stage biopharmaceutical company in the biotechnology research field, focused on developing seralutinib for pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD). Based in San Diego, California, the company seeks to improve outcomes for people living with rare diseases through its product development programs. As a clinical-stage organization, it concentrates on advancing therapies through development with an eye toward potential commercialization. Its target patients are those diagnosed with PAH and PH-ILD, groups with substantial unmet medical need. The firm is positioned as a mid-sized biotechnology company active in the specialized area of respiratory-related diseases within the U.S. biotech sector. In 2026, multiple investor-class action lawsuits were filed against Gossamer Bio, reflecting ongoing legal developments affecting the company.