Company · CIK 1285819 # OMEROS CORP | CIK | [1285819](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001285819) (SEC EDGAR) | | --- | --- | | Industry (SIC) | 2834 — Pharmaceutical Preparations | | Incorporated in | WA | | Business address | WA | | Listed | OMER (Nasdaq) | | First annual or quarterly report | 2009-11-19 | ## Offerings 9 registrations | Registration | Label and status | First filed | Last event | Filings | | --- | --- | --- | --- | --- | | 333-291522 | Shelf Effective | 2025-11-14 | 2025-11-14 | 2 | | 333-268269 | Shelf Effective | 2022-11-09 | 2025-07-25 | 4 | | 333-235349 | Shelf Effective | 2019-12-04 | 2022-05-10 | 9 | | 333-219959 | Shelf Effective | 2017-08-14 | 2017-08-16 | 3 | | 333-201581 | Shelf Effective | 2015-01-16 | 2016-08-15 | 10 | | 333-191779 | Shelf Withdrawn | 2013-10-17 | 2015-01-16 | 2 | | 333-169856 | Shelf Effective | 2010-10-08 | 2014-03-17 | 10 | | 333-168730 | Registered company Withdrawn | 2010-08-10 | 2011-05-10 | 3 | | 333-148572 | IPO Final prospectus | 2008-01-09 | 2009-10-08 | 9 | ## Filings 52 | Filed | Filing | Registration | Accession | | --- | --- | --- | --- | | 2025-11-14 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000155278125000420/0001552781-25-000420-index.htm) Shelf takedown | 333-291522 | 0001552781-25-000420 | | 2025-11-14 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1285819/000155278125000417/0001552781-25-000417-index.htm) Shelf registered | 333-291522 | 0001552781-25-000417 | | 2025-07-25 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000110465925070553/0001104659-25-070553-index.htm) Shelf takedown | 333-268269 | 0001104659-25-070553 | | 2022-11-18 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000110465922120013/0001104659-22-120013-index.htm) Shelf takedown | 333-268269 | 0001104659-22-120013 | | 2022-11-17 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1285819/999999999522003338/9999999995-22-003338-index.htm) Declared effective | 333-268269 | 9999999995-22-003338 | | 2022-11-09 | [S-3](https://www.sec.gov/Archives/edgar/data/1285819/000110465922116532/0001104659-22-116532-index.htm) Shelf registered | 333-268269 | 0001104659-22-116532 | | 2022-05-10 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1285819/999999999522001383/9999999995-22-001383-index.htm) Declared effective | 333-235349 | 9999999995-22-001383 | | 2021-03-01 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746921000474/0001047469-21-000474-index.htm) Shelf takedown | 333-235349 | 0001047469-21-000474 | | 2020-08-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746920004574/0001047469-20-004574-index.htm) Shelf takedown | 333-235349 | 0001047469-20-004574 | | 2020-08-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746920004572/0001047469-20-004572-index.htm) Shelf takedown | 333-235349 | 0001047469-20-004572 | | 2020-08-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746920004476/0001047469-20-004476-index.htm) Shelf takedown | 333-235349 | 0001047469-20-004476 | | 2020-08-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746920004475/0001047469-20-004475-index.htm) Shelf takedown | 333-235349 | 0001047469-20-004475 | | 2019-12-06 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746919006722/0001047469-19-006722-index.htm) Shelf takedown | 333-235349 | 0001047469-19-006722 | | 2019-12-04 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000104746919006643/0001047469-19-006643-index.htm) Shelf takedown | 333-235349 | 0001047469-19-006643 | | 2019-12-04 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1285819/000104746919006632/0001047469-19-006632-index.htm) Shelf registered | 333-235349 | 0001047469-19-006632 | | 2017-08-16 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312517259981/0001193125-17-259981-index.htm) Shelf takedown | 333-219959 | 0001193125-17-259981 | | 2017-08-14 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312517257325/0001193125-17-257325-index.htm) Shelf takedown | 333-219959 | 0001193125-17-257325 | | 2017-08-14 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1285819/000119312517257241/0001193125-17-257241-index.htm) Shelf registered | 333-219959 | 0001193125-17-257241 | | 2016-08-15 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312516681910/0001193125-16-681910-index.htm) Shelf takedown | 333-201581 | 0001193125-16-681910 | | 2016-08-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312516678154/0001193125-16-678154-index.htm) Shelf takedown | 333-201581 | 0001193125-16-678154 | | 2016-08-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312516678046/0001193125-16-678046-index.htm) Shelf takedown | 333-201581 | 0001193125-16-678046 | | 2016-04-22 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1285819/999999999516004300/9999999995-16-004300-index.htm) Declared effective | 333-201581 | 9999999995-16-004300 | | 2016-04-22 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312516552147/0001193125-16-552147-index.htm) Shelf takedown | 333-201581 | 0001193125-16-552147 | | 2016-03-15 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312516505200/0001193125-16-505200-index.htm) Shelf takedown | 333-201581 | 0001193125-16-505200 | | 2016-01-06 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312516422577/0001193125-16-422577-index.htm) Shelf takedown | 333-201581 | 0001193125-16-422577 | | 2015-01-30 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312515027577/0001193125-15-027577-index.htm) Shelf takedown | 333-201581 | 0001193125-15-027577 | | 2015-01-28 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312515023566/0001193125-15-023566-index.htm) Shelf takedown | 333-201581 | 0001193125-15-023566 | | 2015-01-16 | [S-3ASR](https://www.sec.gov/Archives/edgar/data/1285819/000119312515013397/0001193125-15-013397-index.htm) Shelf registered | 333-201581 | 0001193125-15-013397 | | 2015-01-16 | [RW](https://www.sec.gov/Archives/edgar/data/1285819/000119312515013368/0001193125-15-013368-index.htm) Withdrawn | 333-191779 | 0001193125-15-013368 | | 2014-03-17 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312514102291/0001193125-14-102291-index.htm) Shelf takedown | 333-169856 | 0001193125-14-102291 | | 2014-03-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312514097787/0001193125-14-097787-index.htm) Shelf takedown | 333-169856 | 0001193125-14-097787 | | 2014-03-13 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312514097769/0001193125-14-097769-index.htm) Shelf takedown | 333-169856 | 0001193125-14-097769 | | 2013-10-17 | [S-3](https://www.sec.gov/Archives/edgar/data/1285819/000119312513402469/0001193125-13-402469-index.htm) Shelf registered | 333-191779 | 0001193125-13-402469 | | 2013-05-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312513212376/0001193125-13-212376-index.htm) Shelf takedown | 333-169856 | 0001193125-13-212376 | | 2012-12-14 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312512503539/0001193125-12-503539-index.htm) Shelf takedown | 333-169856 | 0001193125-12-503539 | | 2012-06-28 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312512286748/0001193125-12-286748-index.htm) Shelf takedown | 333-169856 | 0001193125-12-286748 | | 2012-06-26 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312512283771/0001193125-12-283771-index.htm) Shelf takedown | 333-169856 | 0001193125-12-283771 | | 2011-05-10 | [RW](https://www.sec.gov/Archives/edgar/data/1285819/000119312511134363/0001193125-11-134363-index.htm) Withdrawn | 333-168730 | 0001193125-11-134363 | | 2011-05-10 | [424B5](https://www.sec.gov/Archives/edgar/data/1285819/000119312511134347/0001193125-11-134347-index.htm) Shelf takedown | 333-169856 | 0001193125-11-134347 | | 2010-10-18 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1285819/999999999510002973/9999999995-10-002973-index.htm) Declared effective | 333-169856 | 9999999995-10-002973 | | 2010-10-08 | [S-3](https://www.sec.gov/Archives/edgar/data/1285819/000119312510226981/0001193125-10-226981-index.htm) Shelf registered | 333-169856 | 0001193125-10-226981 | | 2010-08-27 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1285819/999999999510002578/9999999995-10-002578-index.htm) Declared effective | 333-168730 | 9999999995-10-002578 | | 2010-08-10 | [S-1](https://www.sec.gov/Archives/edgar/data/1285819/000095012310075694/0000950123-10-075694-index.htm) Registration filed | 333-168730 | 0000950123-10-075694 | | 2009-10-08 | [424B4](https://www.sec.gov/Archives/edgar/data/1285819/000095012309049121/0000950123-09-049121-index.htm) Final prospectus | 333-148572 | 0000950123-09-049121 | | 2009-10-07 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1285819/999999999509002786/9999999995-09-002786-index.htm) Declared effective | 333-148572 | 9999999995-09-002786 | | 2009-10-02 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1285819/000095012309047963/0000950123-09-047963-index.htm) Amendment | 333-148572 | 0000950123-09-047963 | | 2009-09-16 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1285819/000095012309043626/0000950123-09-043626-index.htm) Amendment | 333-148572 | 0000950123-09-043626 | | 2009-06-23 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1285819/000095012309016265/0000950123-09-016265-index.htm) Amendment | 333-148572 | 0000950123-09-016265 | | 2009-05-15 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1285819/000095013409010871/0000950134-09-010871-index.htm) Amendment | 333-148572 | 0000950134-09-010871 | | 2008-05-08 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1285819/000089102008000113/0000891020-08-000113-index.htm) Amendment | 333-148572 | 0000891020-08-000113 | | 2008-04-01 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1285819/000089102008000079/0000891020-08-000079-index.htm) Amendment | 333-148572 | 0000891020-08-000079 | | 2008-01-09 | [S-1](https://www.sec.gov/Archives/edgar/data/1285819/000089102008000011/0000891020-08-000011-index.htm) Registration filed | 333-148572 | 0000891020-08-000011 | [All filings of this company](https://equitycapital.markets/filings?cik=1285819) · [CSV](https://equitycapital.markets/filings.csv?cik=1285819) --- Source page: https://equitycapital.markets/company/1285819 · Data: U.S. SEC EDGAR · CC BY 4.0