Omeros Announces Upcoming Presentation at EBMT 2026 Highlighting Advances in TA-TMA Treatment

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SEATTLE, March 21, 2026 --( BUSINESS WIRE )--Omeros Corporation (NASDAQ: OMER) today announced that it will host an industry session at the 52 nd Annual Meeting of the European Society for Blood and Marrow Transplantation (EBMT) on March 22, 2026, from 2:30pm - 4pm CET in Madrid, Spain. The session, titled "Advances in TA-TMA Treatment: Evaluating the Role of a Novel Targeted Therapy," will be co-chaired by Rafael Duarte, MD, PhD, Hospital Universitario Puerta de Hierro Majadahonda, and Mohamad Mohty, MD, PhD, Hôpital Saint-Antoine, AP-HP, and will feature speakers Miguel-Angel Perales, MD, Memorial Sloan Kettering Cancer Center, and Michelle L. Schoettler, MD, MS, Children’s Healthcare of Atlanta. The EBMT Annual Meeting is a key event for professionals in transplantation and cellular therapy, bringing together stakeholders from around the world. About Omeros Corporation Omeros is an innovative, commercial-stage biotechnology company that discovers and develops first-in-class protein and small-molecule therapeutics for large-market and orphan indications, with particular emphasis on complement-mediated diseases, cancers, and addictive or compulsive disorders. Omeros’ lead lectin pathway inhibitor YARTEMLEA ® (narsoplimab-wuug), which inhibits the pathway’s effector enzyme MASP-2, is FDA-approved and commercially available in the U.S. for the treatment of hematopoietic stem cell transplant-associated thrombotic microangiopathy (TA-TMA) in adult and pediatric patients aged two years and older. A marketing authorization application for YARTEMLEA in TA-TMA is currently under review at the European Medicines Agency. OMS1029, Omeros’ long-acting MASP-2 inhibitor, has successfully completed Phase 1 clinical trials. Under a recently announced asset purchase and licensing agreement, Novo Nordisk acquired global rights to zaltenibart (formerly OMS906), a MASP-3 inhibitor in clinical development for PNH and other alternative pathway indications, along with associated intellectual property and related assets. Omeros’ pipeline also includes OMS527, a phosphodiesterase 7 inhibitor in clinical development for cocaine use disorder that is fully funded by the National Institute on Drug Abuse, as well as a growing portfolio of novel molecular and cellular oncology programs. For more information about Omeros and its programs, visit www.omeros.com . View source version on businesswire.com: https://www.businesswire.com/news/home/20260321749459/en/ Contacts Jennifer Cook Williams Cook Williams Communications, Inc. Investor and Media Relations [email protected]

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