Phio Pharmaceuticals Corp. SEC filings PHIO
Phio Pharmaceuticals Corp. has 892 filings in SEC EDGAR's recent list, going back to Oct 25, 2011. Its latest annual report, Form ARS, was filed on Aug 14, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Oct 13, 2026 (other events). The company's fiscal year ends on December 31.
| Form | Description | Filed | Period |
|---|---|---|---|
| EFFECT | Filing | Dec 3, 2025 | — |
| CORRESP | Letter to the SEC | Dec 1, 2025 | — |
| D | Filing | Nov 12, 2025 | — |
| EFFECT | Filing | Aug 22, 2025 | — |
| CORRESP | Letter to the SEC | Aug 21, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 21, 2025 | — |
| D | Filing | Aug 4, 2025 | — |
| EFFECT | Filing | Jan 28, 2025 | — |
| D | Filing | Jan 28, 2025 | — |
| D | Filing | Jan 28, 2025 | — |
| D | Filing | Jan 28, 2025 | — |
| CORRESP | Letter to the SEC | Jan 27, 2025 | — |
| UPLOAD | Letter from the SEC | Jan 24, 2025 | — |
| D | Filing | Jan 7, 2025 | — |
| D | Filing | Jan 3, 2025 | — |
| EFFECT | Filing | Aug 1, 2024 | — |
| CORRESP | Letter to the SEC | Jul 30, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 29, 2024 | — |
| D | Filing | Jul 24, 2024 | — |
| EFFECT | Filing | Jul 1, 2024 | — |
| CORRESP | Letter to the SEC | Jun 27, 2024 | — |
| UPLOAD | Letter from the SEC | May 24, 2024 | — |
| RW | Form rw | May 20, 2024 | — |
| EFFECT | Filing | Dec 27, 2023 | — |
| CORRESP | Letter to the SEC | Dec 22, 2023 | — |
| UPLOAD | Letter from the SEC | Dec 21, 2023 | — |
| D | Filing | Dec 19, 2023 | — |
| EFFECT | Filing | Jun 16, 2023 | — |
| CORRESP | Letter to the SEC | Jun 14, 2023 | — |
| UPLOAD | Letter from the SEC | Jun 14, 2023 | — |
| D | Filing | Jun 13, 2023 | — |
| EFFECT | Filing | May 9, 2023 | — |
| CORRESP | Letter to the SEC | May 5, 2023 | — |
| UPLOAD | Letter from the SEC | May 5, 2023 | — |
| D | Filing | May 2, 2023 | — |
| D | Filing | Nov 23, 2022 | — |
| 25-NSE | Delisting notice | Dec 21, 2021 | — |
| EFFECT | Filing | May 21, 2021 | — |
| CORRESP | Letter to the SEC | May 19, 2021 | — |
| UPLOAD | Letter from the SEC | May 19, 2021 | — |
| D | Filing | Feb 16, 2021 | — |
| EFFECT | Filing | Feb 8, 2021 | — |
| CORRESP | Letter to the SEC | Feb 5, 2021 | — |
| UPLOAD | Letter from the SEC | Feb 2, 2021 | — |
| EFFECT | Filing | Jul 17, 2020 | — |
| UPLOAD | Letter from the SEC | Jul 15, 2020 | — |
| CORRESP | Letter to the SEC | Jul 15, 2020 | — |
| EFFECT | Filing | Jun 1, 2020 | — |
| CORRESP | Letter to the SEC | May 29, 2020 | — |
| CORRESP | Letter to the SEC | May 28, 2020 | — |
| UPLOAD | Letter from the SEC | May 21, 2020 | — |
| D | Filing | Apr 14, 2020 | — |
| D | Filing | Feb 24, 2020 | — |
| EFFECT | Filing | Feb 11, 2020 | — |
| CORRESP | Letter to the SEC | Feb 7, 2020 | — |
| CORRESP | Letter to the SEC | Feb 7, 2020 | — |
| UPLOAD | Letter from the SEC | Oct 8, 2019 | — |
| EFFECT | Filing | Oct 1, 2019 | — |
| CORRESP | Letter to the SEC | Sep 27, 2019 | — |
| CORRESP | Letter to the SEC | Sep 25, 2019 | — |
| UPLOAD | Letter from the SEC | Sep 10, 2019 | — |
| POS EX | Filing | Oct 2, 2018 | — |
| EFFECT | Filing | Sep 28, 2018 | — |
| CORRESP | Letter to the SEC | Sep 28, 2018 | — |
| CORRESP | Letter to the SEC | Sep 28, 2018 | — |
| UPLOAD | Letter from the SEC | Sep 11, 2018 | — |
| D/A | Filing | Aug 17, 2018 | — |
| EFFECT | Filing | May 31, 2018 | — |
| CORRESP | Letter to the SEC | May 31, 2018 | — |
| CORRESP | Letter to the SEC | May 23, 2018 | — |
| UPLOAD | Letter from the SEC | May 16, 2018 | — |
| EFFECT | Filing | Apr 6, 2018 | — |
| CORRESP | Letter to the SEC | Apr 5, 2018 | — |
| UPLOAD | Letter from the SEC | Apr 5, 2018 | — |
| EFFECT | Filing | Aug 30, 2017 | — |
| CORRESP | Letter to the SEC | Aug 28, 2017 | — |
| UPLOAD | Letter from the SEC | Aug 28, 2017 | — |
| D | Filing | Aug 18, 2017 | — |
| EFFECT | Filing | Aug 8, 2017 | — |
| CORRESP | Letter to the SEC | Aug 4, 2017 | — |
| EFFECT | Filing | Jun 21, 2017 | — |
| EFFECT | Filing | May 9, 2017 | — |
| CERTNAS | Auto-generated paper document | Dec 19, 2016 | — |
| 8-A12B | Filing | Dec 19, 2016 | — |
| EFFECT | Filing | Dec 15, 2016 | — |
| CORRESP | Letter to the SEC | Dec 15, 2016 | — |
| CORRESP | Letter to the SEC | Dec 14, 2016 | — |
| CORRESP | Letter to the SEC | Dec 7, 2016 | — |
| UPLOAD | Letter from the SEC | Dec 5, 2016 | — |
| CORRESP | Letter to the SEC | Nov 10, 2016 | — |
| UPLOAD | Letter from the SEC | Nov 4, 2016 | — |
| EFFECT | Filing | May 27, 2015 | — |
| EFFECT | Filing | Apr 18, 2014 | — |
| CORRESP | Letter to the SEC | Apr 17, 2014 | — |
| CT ORDER | Filing | Apr 16, 2014 | — |
| UPLOAD | Letter from the SEC | Apr 3, 2014 | — |
| CERTNAS | Auto-generated paper document | Feb 10, 2014 | — |
| 8-A12B | Filing | Feb 7, 2014 | — |
| EFFECT | Filing | Sep 30, 2013 | — |
| EFFECT | Filing | Aug 8, 2013 | — |
| CORRESP | Letter to the SEC | Aug 6, 2013 | — |
| CT ORDER | Filing | Jul 12, 2013 | — |
| CT ORDER | Filing | Jun 20, 2013 | — |
| UPLOAD | Letter from the SEC | May 23, 2013 | — |
| D | Filing | Mar 26, 2013 | — |
| 8-A12G | Filing | Mar 1, 2013 | — |
| EFFECT | Filing | Jul 6, 2012 | — |
| CORRESP | Letter to the SEC | Jul 5, 2012 | — |
| CORRESP | Letter to the SEC | Jun 21, 2012 | — |
| UPLOAD | Letter from the SEC | Jun 12, 2012 | — |
| SP 15D2 | Special form 10-k | May 8, 2012 | Dec 31, 2011 |
| CT ORDER | Filing | Feb 15, 2012 | — |
| EFFECT | Filing | Feb 14, 2012 | — |
| CORRESP | Letter to the SEC | Feb 14, 2012 | — |
| CORRESP | Letter to the SEC | Feb 9, 2012 | — |
| UPLOAD | Letter from the SEC | Jan 31, 2012 | — |
| UPLOAD | Letter from the SEC | Jan 11, 2012 | — |
| UPLOAD | Letter from the SEC | Dec 22, 2011 | — |
| UPLOAD | Letter from the SEC | Nov 22, 2011 | — |
Showing 119 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
- PHIO (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- King Of Prussia, PA
- SEC filer status
- Non-accelerated filer, Smaller reporting company
- SEC CIK
- 1533040
- Former names
- RXi Pharmaceuticals Corp (until Nov 14, 2018)
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.