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 |
|---|---|---|---|
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 4 | Insider transaction | May 14, 2026 | May 12, 2026 |
| 4 | Insider transaction | Mar 31, 2026 | Mar 27, 2026 |
| 4 | Insider transaction | Mar 30, 2026 | Mar 26, 2026 |
| 4/A | Filing | Jan 30, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 22, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Oct 21, 2025 | Oct 14, 2025 |
| 3 | Initial insider ownership | Oct 21, 2025 | Oct 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 29, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Jul 16, 2025 | — |
| 4 | Insider transaction | May 22, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | May 16, 2025 | May 15, 2025 |
| 4 | Insider transaction | Mar 28, 2025 | Mar 26, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 7, 2025 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 12, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Nov 8, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 4, 2024 | — |
| SC 13G | Ownership over 5% (passive) | Oct 22, 2024 | — |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 4 | Insider transaction | Apr 11, 2024 | Apr 10, 2024 |
| 4 | Insider transaction | Mar 14, 2024 | Mar 9, 2024 |
| 3 | Initial insider ownership | Mar 14, 2024 | Mar 9, 2024 |
| 4 | Insider transaction | Nov 17, 2023 | Nov 15, 2023 |
| 4/A | Form 4/a | Nov 15, 2023 | Nov 15, 2023 |
| 3 | Initial insider ownership | Nov 15, 2023 | Nov 8, 2023 |
| 4 | Insider transaction | Nov 15, 2023 | Nov 15, 2023 |
| 3 | Initial insider ownership | Oct 16, 2023 | Oct 6, 2023 |
| 4 | Insider transaction | Jun 20, 2023 | Jun 20, 2023 |
| 4 | Insider transaction | Jun 5, 2023 | Jun 1, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 4, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 4, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 4, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 4, 2023 |
| 4 | Insider transaction | May 5, 2023 | May 4, 2023 |
| 4 | Insider transaction | Mar 6, 2023 | Mar 2, 2023 |
| 4 | Insider transaction | Mar 6, 2023 | Mar 2, 2023 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 9, 2023 | — |
| SC 13G | Ownership over 5% (passive) | Jul 8, 2022 | — |
| 4 | Insider transaction | May 16, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 13, 2022 |
| 4 | Insider transaction | May 16, 2022 | May 13, 2022 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 24, 2022 |
| 4 | Insider transaction | Feb 28, 2022 | Feb 24, 2022 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 9, 2022 | — |
| SC 13G | Ownership over 5% (passive) | Feb 4, 2022 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 13, 2022 | — |
| 4 | Insider transaction | Jul 7, 2021 | Jul 2, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| 4 | Insider transaction | May 18, 2021 | May 14, 2021 |
| SC 13G | Ownership over 5% (passive) | Jan 15, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Jan 15, 2021 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 15, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Jan 14, 2021 | — |
| SC 13G | Ownership over 5% (passive) | Dec 28, 2020 | — |
| SC 13G | Ownership over 5% (passive) | Dec 18, 2020 | — |
| 4 | Insider transaction | May 19, 2020 | May 15, 2020 |
| 4 | Insider transaction | May 19, 2020 | May 15, 2020 |
| 4 | Insider transaction | May 19, 2020 | May 15, 2020 |
| 4 | Insider transaction | May 19, 2020 | May 15, 2020 |
| 4 | Insider transaction | May 19, 2020 | May 15, 2020 |
| 4 | Insider transaction | Apr 13, 2020 | Apr 9, 2020 |
| 4 | Insider transaction | Apr 13, 2020 | Apr 9, 2020 |
| 4 | Insider transaction | May 21, 2019 | May 17, 2019 |
| 4 | Insider transaction | May 21, 2019 | May 17, 2019 |
| 4 | Insider transaction | May 21, 2019 | May 17, 2019 |
| 4 | Insider transaction | May 21, 2019 | May 17, 2019 |
| 4 | Insider transaction | May 21, 2019 | May 17, 2019 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 8, 2019 | — |
| 4 | Insider transaction | Jan 15, 2019 | Jan 13, 2019 |
| 4 | Insider transaction | Jan 15, 2019 | Jan 13, 2019 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | Jun 29, 2018 | Jun 27, 2018 |
| 4 | Insider transaction | May 31, 2018 | May 30, 2018 |
| 4 | Insider transaction | May 31, 2018 | May 30, 2018 |
| 4 | Insider transaction | May 31, 2018 | May 30, 2018 |
| SC 13G | Ownership over 5% (passive) | Apr 27, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 14, 2018 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 19, 2018 | — |
| 4 | Insider transaction | Nov 16, 2017 | Nov 15, 2017 |
| SC 13G | Ownership over 5% (passive) | Nov 9, 2017 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 3, 2017 | — |
| SC 13G | Ownership over 5% (passive) | Nov 3, 2017 | — |
| SC 13G | Ownership over 5% (passive) | Oct 31, 2017 | — |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | May 26, 2017 | May 24, 2017 |
| 4 | Insider transaction | Apr 18, 2017 | Apr 17, 2017 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | May 19, 2016 | May 18, 2016 |
| 4 | Insider transaction | Apr 4, 2016 | Apr 1, 2016 |
| 4 | Insider transaction | Mar 10, 2016 | Mar 9, 2016 |
| 4 | Insider transaction | Mar 10, 2016 | Mar 9, 2016 |
| 4 | Insider transaction | Feb 17, 2016 | Feb 16, 2016 |
| 4 | Insider transaction | Feb 17, 2016 | Feb 16, 2016 |
| SC 13D/A | Amended ownership over 5% (active) | Jan 28, 2016 | — |
| 4 | Insider transaction | Jan 21, 2016 | Jan 19, 2016 |
| 4 | Insider transaction | Jan 21, 2016 | Jan 19, 2016 |
| 4 | Insider transaction | Sep 3, 2015 | Sep 1, 2015 |
| 3 | Initial insider ownership | Sep 3, 2015 | Sep 1, 2015 |
| 4 | Insider transaction | Jun 15, 2015 | Jun 12, 2015 |
| 4 | Insider transaction | May 18, 2015 | May 12, 2015 |
| 4 | Insider transaction | May 14, 2015 | May 12, 2015 |
| 4 | Insider transaction | May 14, 2015 | May 12, 2015 |
| 4 | Insider transaction | May 14, 2015 | May 12, 2015 |
| 4 | Insider transaction | Mar 18, 2015 | Mar 16, 2015 |
| 4 | Insider transaction | Mar 18, 2015 | Mar 16, 2015 |
| 4 | Insider transaction | Mar 18, 2015 | Mar 16, 2015 |
| 4 | Insider transaction | Mar 18, 2015 | Mar 16, 2015 |
| 3 | Initial insider ownership | Jun 6, 2014 | Jun 2, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 3 | Initial insider ownership | May 8, 2014 | May 6, 2014 |
| 3 | Initial insider ownership | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | May 8, 2014 | May 6, 2014 |
| 4 | Insider transaction | Apr 3, 2014 | Apr 1, 2014 |
| 3 | Initial insider ownership | Apr 3, 2014 | Apr 1, 2014 |
| 4 | Insider transaction | Mar 4, 2014 | Mar 1, 2014 |
| 3 | Initial insider ownership | Mar 4, 2014 | Mar 1, 2014 |
| 5 | Annual insider ownership | Feb 14, 2014 | Dec 31, 2013 |
| 5 | Annual insider ownership | Feb 14, 2014 | Dec 31, 2013 |
| 4 | Insider transaction | Jan 9, 2014 | Jan 8, 2014 |
| 4 | Insider transaction | Nov 22, 2013 | Nov 21, 2013 |
| 4 | Insider transaction | Oct 15, 2013 | Oct 10, 2013 |
| 3 | Initial insider ownership | Oct 15, 2013 | Oct 10, 2013 |
| 4 | Insider transaction | Oct 3, 2013 | Oct 1, 2013 |
| 4 | Insider transaction | Oct 3, 2013 | Oct 1, 2013 |
| 4 | Insider transaction | Jun 27, 2013 | May 15, 2013 |
| 4 | Insider transaction | Jun 6, 2013 | Jun 4, 2013 |
| 4 | Insider transaction | May 9, 2013 | May 7, 2013 |
| 4 | Insider transaction | May 9, 2013 | May 7, 2013 |
| 4 | Insider transaction | May 9, 2013 | May 7, 2013 |
| 4 | Insider transaction | Mar 13, 2013 | Mar 11, 2013 |
| 4 | Insider transaction | Mar 13, 2013 | Mar 11, 2013 |
| 3 | Initial insider ownership | Jan 10, 2013 | Jan 4, 2013 |
| 4 | Insider transaction | Jan 9, 2013 | Jan 8, 2013 |
| SC 13D | Ownership over 5% (active) | Nov 16, 2012 | — |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
| 3 | Initial insider ownership | Nov 7, 2012 | Nov 7, 2012 |
Showing 190 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.