Omeros Corporation 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. The company concentrates its research on complement mediated diseases, cancers, and addictive or compulsive disorders. Its approved product YARTEMLEA (narsoplimab-wuug) is the first and only therapy for hematopoietic stem cell transplant associated TA TMA, acting as a selective…
Omeros Corporation 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. The company concentrates its research on complement mediated diseases, cancers, and addictive or compulsive disorders. Its approved product YARTEMLEA (narsoplimab-wuug) is the first and only therapy for hematopoietic stem cell transplant associated TA TMA, acting as a selective inhibitor of mannose binding lectin associated serine protease 2. Beyond YARTEMLEA, Omeros maintains a deep pipeline that includes product candidates such as Narsoplimab for acute respiratory distress syndrome, OMS1029 a long acting MASP 2 antibody, OMS527 a PDE7 inhibitor for cocaine use disorder and levodopa induced dyskinesia, preclinical programs in MASP 2 and MASP 3 small molecule inhibitors, OncotoX AML for acute myeloid leukemia, and the T CAT platform targeting multidrug resistant organisms. The company operates worldwide research and development activities, retains global commercial rights to YARTEMLEA, and leverages a proprietary intellectual property portfolio with patents extending to the mid 2040s.
Revenue is generated principally from product sales of YARTEMLEA in the United States, where commercial distribution began in January 2026. A major source of non-product revenue is the collaboration with Novo Nordisk, which provided an upfront cash payment of $240 million for exclusive global rights to develop and commercialize the Zaltenibart (OMS906) program. Under this agreement Omeros is eligible to receive up to $510 million in development milestone payments and up to $1.3 billion in sales based milestone payments, plus tiered royalties on net sales ranging from the high single digits to the high teens. Additional potential income stems from licensing arrangements, such as the agreement with Daiichi Sankyo that offers up to $33.5 million in milestone payments and low single digit royalties on future PDE7 inhibitor sales. The company also retains rights to its MASP 3 small molecule program and other early stage assets, which could generate future partnership or licensing revenue.
Omeros occupies a leading niche in the complement therapeutics arena as the sole approved treatment for TA TMA, a condition with significant unmet need. While YARTEMLEA faces potential competition from off label use of C5 inhibitors such as Soliris (eculizumab) and Ultomiris (ravulizumab), it differentiates itself by lacking a boxed warning and a REMS requirement and by not requiring pre treatment vaccinations. The broader complement inhibitor market includes agents like Empaveli (pegcetacoplan), Tavneos (avocopan), PiaSky (crovalimab), Voydeya (danicopan), and Fabhalta (iptacopan), against which Omeros emphasizes its lectin pathway focus and proprietary molecule. The company’s pipeline extends its competitive reach into areas such as acute respiratory distress syndrome, cocaine use disorder, leukemia and infectious disease, providing multiple avenues for growth beyond the current product. Omeros's long standing expertise in complement science and its extensive patent estate, with expirations reaching as late as 2046 for certain assets, reinforce its defensible position in the industry.
The company’s customers are primarily hospitals and transplant centers in the United States, where it engages directly with physicians, nurses, pharmacy teams and reimbursement departments to drive adoption of YARTEMLEA. There are approximately 175 stem cell transplant centers nationwide, with the top 80 facilities accounting for roughly eighty percent of transplant procedures, forming the core focus of its commercial efforts. To support access, Omeros offers the YARTEMLEAssist patient support program, which provides assistance to uninsured or under insured individuals undergoing transplant therapy. While the current commercial footprint is domestic, the company is evaluating partnership structures for potential ex US distribution of YARTEMLEA and future approved products.
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Sector: Healthcare Industry: Biotechnology CIK: 0001285819