Atossa Therapeutics, Inc. SEC filings ATOS
Atossa Therapeutics, Inc. has 641 filings in SEC EDGAR's recent list, going back to Mar 30, 2010. Its latest annual report, Form ARS, was filed on Mar 30, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 7, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 9, 2026 (material agreement, change to shareholder rights, other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| 424B5 | Prospectus supplement | Jun 12, 2026 | — |
| 424B5 | Prospectus supplement | Feb 20, 2026 | — |
| 424B3 | Prospectus | Feb 20, 2026 | — |
| S-8 | Employee stock plan registration | Mar 26, 2025 | — |
| 424B5 | Prospectus supplement | Nov 19, 2024 | — |
| S-3 | Shelf registration | May 13, 2024 | — |
| S-3 | Shelf registration | Apr 21, 2021 | — |
| S-8 | Employee stock plan registration | Mar 31, 2021 | — |
| 424B5 | Prospectus supplement | Mar 23, 2021 | — |
| S-3MEF | Form s-3mef | Mar 22, 2021 | — |
| 424B2 | Prospectus | Feb 4, 2021 | — |
| S-3 | Shelf registration | Jan 22, 2021 | — |
| 424B3 | Prospectus | Jan 8, 2021 | — |
| 424B5 | Prospectus supplement | Dec 21, 2020 | — |
| 424B3 | Prospectus | Dec 11, 2020 | — |
| S-1/A | Amended registration statement | Dec 1, 2020 | — |
| S-1 | Registration statement | Nov 20, 2020 | — |
| 424B3 | Prospectus | Sep 25, 2020 | — |
| S-3 | Shelf registration | Sep 2, 2020 | — |
| 424B3 | Prospectus | Feb 7, 2020 | — |
| S-1 | Registration statement | Jun 4, 2018 | — |
| FWP | Free writing prospectus | May 16, 2018 | — |
| 424B4 | Prospectus | May 10, 2018 | — |
| S-1/A | Amended registration statement | May 3, 2018 | — |
| S-1/A | Amended registration statement | Apr 23, 2018 | — |
| S-1 | Registration statement | Mar 27, 2018 | — |
| 424B5 | Prospectus supplement | Dec 21, 2017 | — |
| 424B3 | Prospectus | Oct 27, 2017 | — |
| 424B3 | Prospectus | Oct 26, 2017 | — |
| S-3 | Shelf registration | Sep 22, 2017 | — |
| 424B3 | Prospectus | Jul 3, 2017 | — |
| 424B3 | Prospectus | Mar 31, 2017 | — |
| FWP | Free writing prospectus | Mar 30, 2017 | — |
| S-1/A | Amended registration statement | Mar 28, 2017 | — |
| S-1/A | Amended registration statement | Mar 28, 2017 | — |
| S-1/A | Amended registration statement | Mar 23, 2017 | — |
| FWP | Free writing prospectus | Mar 21, 2017 | — |
| S-1/A | Amended registration statement | Mar 21, 2017 | — |
| S-1/A | Amended registration statement | Mar 16, 2017 | — |
| S-1 | Registration statement | Feb 13, 2017 | — |
| 424B5 | Prospectus supplement | Sep 1, 2016 | — |
| 424B3 | Prospectus | Aug 31, 2016 | — |
| 424B3 | Prospectus | Jun 20, 2016 | — |
| S-1 | Registration statement | Jun 3, 2016 | — |
| 424B3 | Prospectus | Dec 23, 2015 | — |
| S-1/A | Amended registration statement | Dec 16, 2015 | — |
| S-1 | Registration statement | Nov 27, 2015 | — |
| S-1 | Registration statement | Jun 26, 2015 | — |
| 424B5 | Prospectus supplement | Jun 9, 2015 | — |
| POS AM | Form pos am | Apr 23, 2015 | — |
| POS AM | Filing | Apr 18, 2014 | — |
| POS AM | Form pos am | Apr 15, 2014 | — |
| S-8 | Employee stock plan registration | Feb 14, 2014 | — |
| 424B5 | Prospectus supplement | Jan 27, 2014 | — |
| 424B5 | Prospectus supplement | Jan 23, 2014 | — |
| 424B3 | Prospectus | Dec 17, 2013 | — |
| S-1/A | Amended registration statement | Dec 11, 2013 | — |
| S-3 | Shelf registration | Nov 18, 2013 | — |
| S-1 | Registration statement | Nov 12, 2013 | — |
| 424B3 | Prospectus | Oct 7, 2013 | — |
| 424B3 | Prospectus | Apr 19, 2013 | — |
| S-1/A | Amended registration statement | Apr 17, 2013 | — |
| S-1 | Registration statement | Apr 5, 2013 | — |
| S-1/A | Amended registration statement | Feb 6, 2013 | — |
| S-1 | Registration statement | Jan 28, 2013 | — |
| S-8 | Employee stock plan registration | Dec 21, 2012 | — |
| 424B4 | Prospectus | Nov 9, 2012 | — |
| S-1/A | Amended registration statement | Nov 6, 2012 | — |
| S-1/A | Amended registration statement | Oct 25, 2012 | — |
| S-1/A | Amended registration statement | Oct 19, 2012 | — |
| S-1/A | Amended registration statement | Oct 4, 2012 | — |
| FWP | Free writing prospectus | Sep 13, 2012 | — |
| S-1/A | Amended registration statement | Aug 30, 2012 | — |
| S-1/A | Amended registration statement | Aug 21, 2012 | — |
| S-1/A | Amended registration statement | Aug 13, 2012 | — |
| S-1/A | Amended registration statement | Jun 25, 2012 | — |
| S-1/A | Amended registration statement | Jun 18, 2012 | — |
| S-1/A | Amended registration statement | Jun 11, 2012 | — |
| S-1/A | Amended registration statement | May 21, 2012 | — |
| S-1/A | Amended registration statement | Apr 6, 2012 | — |
| S-1 | Registration statement | Feb 14, 2012 | — |
| S-1/A | Amended registration statement | Feb 4, 2011 | — |
| S-1/A | Amended registration statement | Jan 10, 2011 | — |
| S-1/A | Amended registration statement | Dec 16, 2010 | — |
| S-1/A | Amended registration statement | Nov 23, 2010 | — |
| S-1 | Registration statement | Oct 1, 2010 | — |
| S-1 | Registration statement | Mar 30, 2010 | — |
Showing 87 filings. 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
- ATOS (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Seattle, WA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1488039
- Former names
- ATOSSA GENETICS INC (until Nov 13, 2019)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.