Omeros Corp SEC filings OMER
Omeros Corp has 810 filings in SEC EDGAR's recent list, going back to Mar 31, 2004. Its latest annual report, Form ARS, was filed on Apr 30, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 12, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 30, 2026 (officer or director change). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Oct 30, 2026 | Oct 28, 2026 |
| 8-K |
Current report
Officer or director change
|
Oct 30, 2026 | Oct 28, 2026 |
| 4 | Insider transaction | Sep 24, 2026 | Sep 22, 2026 |
| 144 | Notice of proposed sale | Sep 23, 2026 | — |
| 144 | Notice of proposed sale | Sep 22, 2026 | — |
| 4 | Insider transaction | Sep 1, 2026 | Aug 28, 2026 |
| 144 | Notice of proposed sale | Aug 31, 2026 | — |
| 144 | Notice of proposed sale | Aug 28, 2026 | — |
| 4 | Insider transaction | Aug 28, 2026 | Aug 26, 2026 |
| 144 | Notice of proposed sale | Aug 27, 2026 | — |
| 144 | Notice of proposed sale | Aug 26, 2026 | — |
| 4 | Insider transaction | Aug 25, 2026 | Aug 21, 2026 |
| 4 | Insider transaction | Aug 21, 2026 | Aug 20, 2026 |
| 144 | Notice of proposed sale | Aug 21, 2026 | — |
| 144 | Notice of proposed sale | Aug 20, 2026 | — |
| 4 | Insider transaction | Aug 18, 2026 | Aug 12, 2026 |
| 3 | Initial insider ownership | Aug 18, 2026 | Aug 12, 2026 |
| 4 | Insider transaction | Aug 17, 2026 | Aug 13, 2026 |
| 144 | Notice of proposed sale | Aug 13, 2026 | — |
| S-8 | Employee stock plan registration | Aug 13, 2026 | — |
| 8-K |
Current report
Officer or director change
|
Aug 13, 2026 | Aug 12, 2026 |
| 10-Q | Quarterly report | Aug 12, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2026 | Aug 12, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 29, 2026 | — |
| 4 | Insider transaction | Jul 24, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 24, 2026 | Jul 22, 2026 |
| 4 | Insider transaction | Jul 24, 2026 | Jul 22, 2026 |
| 8-K |
Current report
Other events
|
Jul 20, 2026 | Jul 20, 2026 |
| 8-K |
Current report
Other events
|
Jul 6, 2026 | Jul 2, 2026 |
| 8-K |
Current report
Shareholder vote results
|
Jun 25, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 4 | Insider transaction | Jun 22, 2026 | Jun 18, 2026 |
| 8-K |
Current report
Other events
|
Jun 18, 2026 | Jun 17, 2026 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 144 | Notice of proposed sale | May 22, 2026 | — |
| 10-Q | Quarterly report | May 13, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 13, 2026 | May 13, 2026 |
| ARS | Annual report to shareholders | Apr 30, 2026 | Dec 31, 2025 |
| DEF 14A | Proxy statement | Apr 30, 2026 | Jun 18, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 23, 2026 | — |
| 10-K | Annual report | Mar 31, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 31, 2026 | Mar 31, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Feb 20, 2026 | Feb 18, 2026 |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 30, 2026 | — |
| 4 | Insider transaction | Jan 14, 2026 | Jan 12, 2026 |
| 144 | Notice of proposed sale | Jan 13, 2026 | — |
| 144 | Notice of proposed sale | Jan 12, 2026 | — |
| 8-K |
Current report
Results of operations
|
Jan 7, 2026 | Jan 7, 2026 |
| 8-K |
Current report
Other events
|
Dec 29, 2025 | Dec 24, 2025 |
| 8-K |
Current report
Agreement ended, Acquisition or sale of assets, Other events
|
Dec 1, 2025 | Nov 25, 2025 |
| 424B5 | Prospectus supplement | Nov 14, 2025 | — |
| S-3ASR | Automatic shelf registration | Nov 14, 2025 | — |
| 10-Q | Quarterly report | Nov 13, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2025 | Nov 13, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 31, 2025 | — |
| 4 | Insider transaction | Oct 15, 2025 | Oct 13, 2025 |
| 8-K |
Current report
Material agreement, Other events
|
Oct 15, 2025 | Oct 10, 2025 |
| 10-Q | Quarterly report | Aug 14, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2025 | Aug 14, 2025 |
| 8-K |
Current report
Other events
|
Jul 25, 2025 | Jul 24, 2025 |
| 424B5 | Prospectus supplement | Jul 25, 2025 | — |
| 8-K |
Current report
Shareholder vote results
|
Jul 2, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 30, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| 4 | Insider transaction | Jul 1, 2025 | Jun 27, 2025 |
| ARS | Annual report to shareholders | May 30, 2025 | Dec 31, 2024 |
| DEF 14A | Proxy statement | May 30, 2025 | Jun 27, 2025 |
| 8-K/A | Amended current report | May 16, 2025 | May 12, 2025 |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Material agreement, Results of operations, New debt, Unregistered share sale, Other events
|
May 15, 2025 | May 12, 2025 |
| 8-K |
Current report
Other events
|
May 6, 2025 | May 6, 2025 |
| 10-K/A | Amended annual report | Apr 30, 2025 | Dec 31, 2024 |
| 10-K | Annual report | Mar 31, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 31, 2025 | Mar 31, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 21, 2025 | — |
| 8-K |
Current report
Other events
|
Feb 20, 2025 | Feb 20, 2025 |
| 8-K |
Current report
Other events
|
Jan 16, 2025 | Jan 16, 2025 |
| 8-K |
Current report
Other events
|
Dec 19, 2024 | Dec 19, 2024 |
| 10-Q | Quarterly report | Nov 13, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2024 | Nov 13, 2024 |
| 10-Q | Quarterly report | Aug 7, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 7, 2024 | Aug 7, 2024 |
| 3 | Initial insider ownership | Jul 3, 2024 | Jun 30, 2024 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 12, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 4 | Insider transaction | Jun 7, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Material agreement, New debt, Regulation FD disclosure, Other events
|
Jun 3, 2024 | Jun 3, 2024 |
| 10-Q | Quarterly report | May 15, 2024 | Mar 31, 2024 |
| 8-K |
Current report
Results of operations
|
May 15, 2024 | May 15, 2024 |
| DEF 14A | Proxy statement | Apr 29, 2024 | Jun 6, 2024 |
| ARS | Annual report to shareholders | Apr 29, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Apr 29, 2024 | Apr 25, 2024 |
| 4 | Insider transaction | Apr 29, 2024 | Apr 25, 2024 |
| 4 | Insider transaction | Apr 29, 2024 | Apr 25, 2024 |
| 10-K | Annual report | Apr 1, 2024 | Dec 31, 2023 |
| 8-K |
Current report
Results of operations
|
Apr 1, 2024 | Apr 1, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Mar 27, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Feb 13, 2024 | — |
| 8-K |
Current report
Material agreement, New debt
|
Feb 7, 2024 | Feb 1, 2024 |
| SC 13G | Ownership over 5% (passive) | Jan 29, 2024 | — |
| 4 | Insider transaction | Nov 21, 2023 | Nov 17, 2023 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4 | Insider transaction | Nov 15, 2023 | Nov 13, 2023 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2023 | Nov 9, 2023 |
| 8-K |
Current report
Other events
|
Oct 16, 2023 | Oct 16, 2023 |
| 4 | Insider transaction | Sep 27, 2023 | Sep 22, 2023 |
| 4 | Insider transaction | Sep 27, 2023 | Sep 22, 2023 |
| 4 | Insider transaction | Sep 27, 2023 | Sep 22, 2023 |
| 144 | Notice of proposed sale | Sep 20, 2023 | — |
| 4 | Insider transaction | Sep 14, 2023 | Sep 12, 2023 |
| S-8 | Employee stock plan registration | Aug 9, 2023 | — |
| 10-Q | Quarterly report | Aug 9, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2023 | Aug 9, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 28, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | Jun 27, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | May 23, 2023 | May 22, 2023 |
| 4 | Insider transaction | May 23, 2023 | May 22, 2023 |
| 144 | Notice of proposed sale | May 22, 2023 | — |
| 144 | Notice of proposed sale | May 22, 2023 | — |
| ARS | Annual report to shareholders | May 17, 2023 | Dec 31, 2022 |
| DEF 14A | Proxy statement | May 17, 2023 | Jun 23, 2023 |
| 4 | Insider transaction | May 16, 2023 | May 12, 2023 |
| 3 | Initial insider ownership | May 16, 2023 | May 12, 2023 |
| 8-K |
Current report
Officer or director change
|
May 16, 2023 | May 12, 2023 |
| 10-Q | Quarterly report | May 9, 2023 | Mar 31, 2023 |
| 8-K |
Current report
Results of operations
|
May 9, 2023 | May 9, 2023 |
| 10-K/A | Amended annual report | May 1, 2023 | Dec 31, 2022 |
| 10-K | Annual report | Mar 13, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Results of operations
|
Mar 13, 2023 | Mar 13, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 17, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2023 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| 8-K |
Current report
Results of operations, Other events
|
Feb 6, 2023 | Feb 6, 2023 |
| 424B5 | Prospectus supplement | Nov 18, 2022 | — |
| 424B3 | Prospectus | Nov 18, 2022 | — |
| EFFECT | Filing | Nov 17, 2022 | — |
| CORRESP | Letter to the SEC | Nov 16, 2022 | — |
| UPLOAD | Letter from the SEC | Nov 15, 2022 | — |
| S-3 | Shelf registration | Nov 9, 2022 | — |
| 10-Q | Quarterly report | Nov 9, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Results of operations
|
Nov 9, 2022 | Nov 9, 2022 |
| 8-K |
Current report
Material agreement, New debt
|
Oct 6, 2022 | Sep 30, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 4 | Insider transaction | Sep 23, 2022 | Sep 21, 2022 |
| 10-Q | Quarterly report | Aug 9, 2022 | Jun 30, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 9, 2022 | Aug 9, 2022 |
| SC 13G | Ownership over 5% (passive) | Jul 8, 2022 | — |
| 8-K |
Current report
Shareholder vote results
|
Jun 24, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| 4 | Insider transaction | Jun 22, 2022 | Jun 17, 2022 |
| EFFECT | Filing | May 10, 2022 | — |
| 10-Q | Quarterly report | May 10, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Results of operations
|
May 10, 2022 | May 10, 2022 |
| DEF 14A | Proxy statement | May 2, 2022 | Jun 17, 2022 |
| POS AM | Filing | Mar 1, 2022 | — |
| 10-K | Annual report | Mar 1, 2022 | Dec 31, 2021 |
| POSASR | Filing | Mar 1, 2022 | — |
| 8-K |
Current report
Results of operations
|
Mar 1, 2022 | Mar 1, 2022 |
| 4 | Insider transaction | Feb 14, 2022 | Jun 11, 2021 |
| 4 | Insider transaction | Feb 14, 2022 | Jun 11, 2021 |
| 4 | Insider transaction | Feb 14, 2022 | Jun 11, 2021 |
| 4 | Insider transaction | Feb 14, 2022 | Jun 11, 2021 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Pharmaceutical Preparations (SIC 2834)
- Listed as
- OMER (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- WA
- Headquarters
- Seattle, WA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1285819
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.