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 |
| 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 | — |
| 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 |
| 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 |
| 4 | Insider transaction | May 27, 2026 | May 22, 2026 |
| 144 | Notice of proposed sale | May 22, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 23, 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 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Oct 31, 2025 | — |
| 4 | Insider transaction | Oct 15, 2025 | Oct 13, 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 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 21, 2025 | — |
| 3 | Initial insider ownership | Jul 3, 2024 | Jun 30, 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 |
| 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 |
| 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 | — |
| 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 |
| 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 |
| 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 | — |
| 4 | Insider transaction | May 16, 2023 | May 12, 2023 |
| 3 | Initial insider ownership | May 16, 2023 | May 12, 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 | — |
| 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 |
| SC 13G | Ownership over 5% (passive) | Jul 8, 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 |
| 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 |
| 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 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 10, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 4, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 3, 2022 | — |
| 4 | Insider transaction | Sep 9, 2021 | Sep 8, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | Jul 6, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | Jun 17, 2021 | Jun 15, 2021 |
| 4 | Insider transaction | May 21, 2021 | May 19, 2021 |
| 4 | Insider transaction | Apr 8, 2021 | Apr 7, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 22, 2021 |
| 4 | Insider transaction | Feb 23, 2021 | Feb 19, 2021 |
| 4 | Insider transaction | Feb 17, 2021 | Feb 12, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 17, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 16, 2021 | — |
| 4 | Insider transaction | Feb 12, 2021 | Feb 10, 2021 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 12, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Feb 10, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 29, 2021 | — |
| 4 | Insider transaction | Jan 21, 2021 | Jan 19, 2021 |
| 4 | Insider transaction | Jan 15, 2021 | Jan 13, 2021 |
| 4 | Insider transaction | Oct 28, 2020 | Oct 26, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | Jun 9, 2020 | Jun 5, 2020 |
| 4 | Insider transaction | May 15, 2020 | May 13, 2020 |
| SC 13G | Ownership over 5% (passive) | May 4, 2020 | — |
| 4 | Insider transaction | Mar 17, 2020 | Mar 13, 2020 |
| 4 | Insider transaction | Mar 3, 2020 | Mar 1, 2020 |
| 4 | Insider transaction | Mar 3, 2020 | Mar 1, 2020 |
| 4 | Insider transaction | Mar 3, 2020 | Mar 1, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Feb 14, 2020 | — |
| 4 | Insider transaction | Feb 12, 2020 | Feb 10, 2020 |
| 3 | Initial insider ownership | Feb 12, 2020 | Feb 10, 2020 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 7, 2020 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 5, 2020 | — |
| 4 | Insider transaction | Dec 17, 2019 | Dec 14, 2019 |
| 4 | Insider transaction | Dec 17, 2019 | Dec 14, 2019 |
| 4 | Insider transaction | Dec 5, 2019 | Dec 3, 2019 |
| 4 | Insider transaction | Oct 16, 2019 | Oct 14, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 10, 2019 |
| 3 | Initial insider ownership | Jun 11, 2019 | Jun 10, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| 4 | Insider transaction | Jun 11, 2019 | Jun 7, 2019 |
| SC 13G | Ownership over 5% (passive) | May 10, 2019 | — |
| SC 13G | Ownership over 5% (passive) | Mar 8, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2019 | — |
| 4 | Insider transaction | Feb 12, 2019 | Feb 8, 2019 |
| 4 | Insider transaction | Feb 12, 2019 | Feb 8, 2019 |
| 4 | Insider transaction | Feb 12, 2019 | Feb 8, 2019 |
| 4 | Insider transaction | Feb 12, 2019 | Feb 9, 2019 |
| 3 | Initial insider ownership | Feb 12, 2019 | Feb 9, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2019 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 30, 2019 | — |
| 4 | Insider transaction | Aug 31, 2018 | Aug 30, 2018 |
| 4 | Insider transaction | Jul 30, 2018 | Jul 26, 2018 |
| 4 | Insider transaction | Jul 13, 2018 | Jul 12, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | Jun 15, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | Jun 15, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | Jun 15, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | Jun 15, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | Jun 15, 2018 |
| 4 | Insider transaction | Jun 18, 2018 | Jun 15, 2018 |
| 4 | Insider transaction | May 16, 2018 | May 14, 2018 |
| 4 | Insider transaction | Apr 11, 2018 | Apr 8, 2018 |
| 4 | Insider transaction | Apr 10, 2018 | Apr 8, 2018 |
| 4 | Insider transaction | Apr 10, 2018 | Apr 8, 2018 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2018 | — |
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.