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Omeros Corporation

OMER
Healthcare|Biotechnology|US
$16.92
-0.15 (-0.88%)
Cash / Share
$1.83

About

Omeros Corporation is a biopharmaceutical firm with commercialized products, actively engaged in the discovery, development, and market introduction of both small-molecule and protein-based therapies, including treatments for rare diseases. The company's therapeutic endeavors primarily focus on inflammatory conditions, illnesses mediated by the complement system, cancers linked to immune system dysregulation, and disorders characterized by addiction or compulsion. Its robust clinical pipeline features several promising candidates. Narsoplimab (also known as OMS721 or MASP-2), a leading asset, has successfully concluded pivotal trials for hematopoietic stem-cell transplant-associated thrombotic microangiopathy (HSCT-TMA). This drug is also currently undergoing Phase III clinical evaluation for immunoglobulin A nephropathy (IgAN) and atypical hemolytic uremic syndrome (aHUS), in addition to a Phase II trial investigating its potential for treating COVID-19. Further expanding its clinical portfolio, Omeros is developing PPAR? (OMS405) in Phase II for opioid and nicotine dependence. PDE7 (OMS527) is progressing through Phase I studies for addiction, compulsive disorders, and movement disorders. Additionally, MASP-3 (OMS906) is currently in Phase I trials for paroxysmal nocturnal hemoglobinuria (PNH) and other conditions involving the alternative complement pathway. Beyond its clinical efforts, the company maintains a dynamic preclinical program. This includes small-molecule inhibitors targeting MASP-2, which are being explored for applications in aHUS, IgAN, HSCT-TMA, and age-related macular degeneration. Also in development is a next-generation, longer-acting antibody that targets MASP-2, alongside MASP-3 small-molecule inhibitors designed to address PNH and other alternative pathway disorders. Omeros's preclinical research further encompasses GPR174 inhibitors, as well as Chimeric Antigen Receptor (CAR) T-Cell and Adoptive T-Cell Therapies for various oncological indications. The company is also investigating G protein-coupled receptor targets for a broad spectrum of diseases, including immunological, immuno-oncological, metabolic, central nervous system (CNS), cardiovascular, musculoskeletal, and other conditions. Established in 1994, Omeros Corporation is headquartered in Seattle, Washington.

Stock Price

+157.1%(1Y)
1M
-11.5%
3M
+27.7%
6M
+19.7%
YTD
-1.5%
1Y
+156.4%
3Y
+1201.5%
5Y
+126.8%

Pipeline Summary

29 total trials
5
Phase 1
14
Phase 2
11
Phase 3
2
Phase 4
Completed: 18Terminated: 7Withdrawn: 1Approved: 1Active: 1Recruiting: 1

Active Trials (2)

Long-Term Safety, Tolerability and Efficacy of OMS906 in Paroxysmal Nocturnal Hemoglobinuria
NCT06298955Paroxysmal Nocturnal Hemoglobinuria
Phase 2Active
Enrollment: 25 participants
Efficacy and Safety Study of Narsoplimab in Pediatric Patients With High-Risk Hematopoietic Stem Cell Transplant TMA
NCT05855083Thrombotic Microangiopathies
Phase 2Recruiting
Enrollment: 18 participants

Key Facts

Market Cap$1.22B
Employees175 (-13% YoY)
CEOGregory A. Demopulos
IPO DateOct 8, 2009
Beta2.57
52-Week Range$6.24 – $21.24
Avg Volume1,582,153
ExchangeNASDAQ
Websiteomeros.com

Ownership

Float95.7%
Shares Outstanding72.4M

Recent Insider Trades

Demopulos Gregory A MDAWARD
Oct 28, 2026500,000 shares @ $17.88
Borges David J.OPTION EX.
Sep 22, 20265,000 shares @ $2.94
Borges David J.OPTION EX.
Sep 23, 202610,000 shares @ $15.58
Borges David J.OPTION EX.
Sep 22, 20265,000 shares @ $2.94
Borges David J.OPTION EX.
Sep 22, 20265,000 shares @ $3.93

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Data last updated: Nov 9, 2026, 04:26 AM