Omeros Corporation

Omeros Corporation

OMERยทNASDAQ

$10.43

+1.7%
HealthcareBiotechnology

Omeros Corporation, a commercial-stage biopharmaceutical company, discovers, develops, and commercializes small-molecule and protein therapeutics, and orphan indications targeting inflammation, complement-mediated diseases, cancers related to dysfunction of the immune system, and addictive and compulsive disorders. The company's clinical programs include Narsoplimab (OMS721/MASP-2) that has completed pivotal studies for hematopoietic stem-cell transplant-associated thrombotic microangiopathy (HSCT-TMA); that is in Phase III clinical trial for immunoglobulin A nephropathy (IgAN) and atypical hemolytic uremic syndrome (aHUS); and Phase II clinical trial to treat COVID-19. Its clinical programs also consist of PPAR? (OMS405) that is in Phase II to treat opioid and nicotine addiction; PDE7 (OMS527), which is in Phase I trial for treating addiction and compulsive disorders, and movement disorders; and MASP-3 (OMS906) that is in Phase I trial for paroxysmal nocturnal hemoglobinuria (PNH) and other alternative pathway disorders. The company's preclinical programs comprise MASP-2-small-molecule inhibitors used for the treatment of aHUS, IgAN, HSCT-TMA, and age-related macular degeneration; longer-acting second generation antibody targeting MASP-2; and MASP-3-small-molecule inhibitors to treat PNH and other alternative pathway disorders. Its preclinical programs also include GPR174 Inhibitors and Chimeric Antigen Receptor (CAR) T-Cell and Adoptive T-Cell Therapies for various cancers; and G protein-coupled receptor targets for treating immunologic, immuno-oncologic, metabolic, CNS, cardiovascular, musculoskeletal, and other disorders. The company was incorporated in 1994 and is headquartered in Seattle, Washington.

At a Glance

Live Snapshot
Market Cap$754.87M
EPS-0.0527
P/E Ratio-197.91
Earnings Date08/13/2026

SEC Filings

OMER - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
10-Q

10-Q 2026 Q1

Q1

May 13, 2026
March 31, 2026
2026
8-K

8-K 2026

N/A

May 13, 2026
May 13, 2026
2026
DEF 14A

DEF 14A 2026

N/A

April 30, 2026
June 18, 2026
2026
10-K

10-K 2025 FY

FY

March 31, 2026
December 31, 2025
2025
8-K

8-K 2026

N/A

March 31, 2026
March 31, 2026
2026
8-K

8-K 2026

N/A

January 07, 2026
January 07, 2026
2026
8-K

8-K 2025

N/A

December 29, 2025
December 24, 2025
2025
8-K

8-K 2025

N/A

December 01, 2025
November 25, 2025
2025
8-K

8-K 2025

N/A

November 13, 2025
November 13, 2025
2025
10-Q

10-Q 2025 Q3

Q3

November 13, 2025
September 30, 2025
2025
Showing 1 to 10 of 272 filings

Understanding SEC Filings

Essential regulatory documents for investors

SEC filings are mandatory documents that publicly traded companies must submit to the Securities and Exchange Commission. These reports provide critical insights into a company's financial health, operations, risks, and strategic direction. For investors conducting due diligence, these filings are the most authoritative source of company information.

10-K

Annual Report

Comprehensive annual financial report filed within 60-90 days of fiscal year-end. Includes audited financial statements, management discussion & analysis (MD&A), risk factors, and detailed business operations. The most thorough financial disclosure of the year.

Filed annually
10-Q

Quarterly Report

Unaudited quarterly financial report filed within 40-45 days after each of the first three fiscal quarters. Provides updates on financial position, results of operations, and significant events. Essential for tracking quarterly performance trends.

Filed 3 times per year
8-K

Current Report

Event-driven filing for material events that shareholders should know about, filed within 4 business days. Includes acquisitions, executive changes, bankruptcy, earnings releases, and other significant developments. Critical for staying informed about breaking news.

Filed as events occur
DEF 14A

Proxy Statement

Definitive proxy statement sent to shareholders before annual meetings. Contains executive compensation details, board member information, voting matters, and corporate governance policies. Key for understanding management incentives and board composition.

Filed before shareholder meetings
S-1

Registration Statement

Initial registration for securities offerings, including IPOs. Provides detailed company history, business model, financial statements, risk factors, and use of proceeds. Essential for evaluating new investment opportunities and understanding company fundamentals.

Filed for new offerings
20-F

Foreign Annual Report

Annual report for foreign private issuers, equivalent to Form 10-K for non-U.S. companies. Filed within 4-6 months of fiscal year-end. Contains audited financials, business description, and regulatory disclosures adapted for international companies.

Foreign companies only

Why SEC Filings Matter

  • Regulatory Accuracy: Filings are subject to SEC review and legal penalties for misstatements, ensuring high data quality
  • Management Insights: MD&A sections reveal management's perspective on trends, challenges, and future outlook
  • Risk Assessment: Detailed risk factor disclosures help investors understand potential threats to business operations
  • Competitive Analysis: Business descriptions and segment data enable comparison with industry peers
  • Historical Context: Years of filings provide trend analysis and context for current performance