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 |
|---|---|---|---|
| 8-K |
Current report
Other events
|
Oct 13, 2026 | Oct 13, 2026 |
| 4 | Insider transaction | Sep 30, 2026 | Sep 28, 2026 |
| 4 | Insider transaction | Sep 29, 2026 | Sep 28, 2026 |
| 4 | Insider transaction | Sep 29, 2026 | Sep 28, 2026 |
| 4 | Insider transaction | Sep 29, 2026 | Sep 28, 2026 |
| S-8 | Employee stock plan registration | Sep 28, 2026 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Sep 28, 2026 | Sep 28, 2026 |
| 4 | Insider transaction | Sep 25, 2026 | Sep 24, 2026 |
| 4 | Insider transaction | Sep 23, 2026 | Sep 22, 2026 |
| 4 | Insider transaction | Sep 16, 2026 | Sep 15, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 11, 2026 |
| 4 | Insider transaction | Sep 15, 2026 | Sep 11, 2026 |
| 8-K |
Current report
Other events
|
Sep 14, 2026 | Sep 14, 2026 |
| 4 | Insider transaction | Aug 20, 2026 | Aug 19, 2026 |
| 4 | Insider transaction | Aug 19, 2026 | Aug 18, 2026 |
| ARS | Annual report to shareholders | Aug 14, 2026 | Dec 31, 2025 |
| DEFA14A | Additional proxy material | Aug 14, 2026 | — |
| DEF 14A | Proxy statement | Aug 14, 2026 | Sep 28, 2026 |
| 8-K |
Current report
Results of operations
|
Aug 6, 2026 | Aug 6, 2026 |
| 10-Q | Quarterly report | Aug 6, 2026 | Jun 30, 2026 |
| 3 | Initial insider ownership | Jul 30, 2026 | Jul 20, 2026 |
| 8-K |
Current report
Officer or director change, Other events
|
Jul 21, 2026 | Jul 21, 2026 |
| 4 | Insider transaction | Jun 29, 2026 | Jun 26, 2026 |
| 10-Q | Quarterly report | May 7, 2026 | Mar 31, 2026 |
| 8-K |
Current report
Results of operations
|
May 7, 2026 | May 7, 2026 |
| 8-K |
Current report
Material agreement
|
Apr 8, 2026 | Apr 8, 2026 |
| 424B5 | Prospectus supplement | Apr 8, 2026 | — |
| 8-K |
Current report
Other events
|
Mar 30, 2026 | Mar 30, 2026 |
| 10-K | Annual report | Mar 5, 2026 | Dec 31, 2025 |
| 8-K |
Current report
Results of operations
|
Mar 5, 2026 | Mar 5, 2026 |
| 8-K |
Current report
Officer or director change
|
Feb 18, 2026 | Feb 17, 2026 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 17, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 13, 2026 | — |
| 8-K |
Current report
Other events
|
Feb 10, 2026 | Feb 10, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 4 | Insider transaction | Feb 6, 2026 | Feb 5, 2026 |
| 8-K |
Current report
Other events
|
Jan 20, 2026 | Jan 20, 2026 |
| 4 | Insider transaction | Jan 2, 2026 | Dec 31, 2025 |
| 4 | Insider transaction | Dec 29, 2025 | Dec 23, 2025 |
| 8-K |
Current report
Other events
|
Dec 23, 2025 | Dec 23, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Dec 11, 2025 | — |
| 424B3 | Prospectus | Dec 4, 2025 | — |
| EFFECT | Filing | Dec 3, 2025 | — |
| CORRESP | Letter to the SEC | Dec 1, 2025 | — |
| 8-K |
Current report
Other events
|
Nov 25, 2025 | Nov 25, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 24, 2025 | — |
| 4 | Insider transaction | Nov 24, 2025 | Nov 21, 2025 |
| S-3 | Shelf registration | Nov 20, 2025 | — |
| 4 | Insider transaction | Nov 19, 2025 | Nov 18, 2025 |
| 10-Q | Quarterly report | Nov 13, 2025 | Sep 30, 2025 |
| 8-K |
Current report
Results of operations
|
Nov 13, 2025 | Nov 13, 2025 |
| D | Filing | Nov 12, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 12, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Nov 10, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 7, 2025 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Nov 6, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Nov 6, 2025 | Nov 3, 2025 |
| 8-K |
Current report
Other events
|
Nov 3, 2025 | Nov 3, 2025 |
| 8-K |
Current report
Officer or director change, Other events
|
Oct 31, 2025 | Oct 31, 2025 |
| 4/A | Filing | Sep 15, 2025 | Sep 11, 2025 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| 4 | Insider transaction | Sep 15, 2025 | Sep 11, 2025 |
| S-8 | Employee stock plan registration | Sep 11, 2025 | — |
| 8-K |
Current report
Other events
|
Sep 3, 2025 | Sep 3, 2025 |
| DEFA14A | Additional proxy material | Aug 28, 2025 | — |
| 424B3 | Prospectus | Aug 27, 2025 | — |
| EFFECT | Filing | Aug 22, 2025 | — |
| CORRESP | Letter to the SEC | Aug 21, 2025 | — |
| UPLOAD | Letter from the SEC | Aug 21, 2025 | — |
| S-3 | Shelf registration | Aug 15, 2025 | — |
| 10-Q | Quarterly report | Aug 14, 2025 | Jun 30, 2025 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2025 | Aug 14, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Aug 7, 2025 | — |
| D | Filing | Aug 4, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Jul 30, 2025 | Jul 25, 2025 |
| ARS | Annual report to shareholders | Jul 30, 2025 | Dec 31, 2024 |
| DEFA14A | Additional proxy material | Jul 30, 2025 | — |
| DEF 14A | Proxy statement | Jul 30, 2025 | Sep 11, 2025 |
| 8-K |
Current report
Other events
|
Jul 25, 2025 | Jul 25, 2025 |
| 8-K |
Current report
Other events
|
Jul 7, 2025 | Jul 7, 2025 |
| 8-K |
Current report
Other events
|
Jun 26, 2025 | Jun 25, 2025 |
| 3 | Initial insider ownership | Jun 18, 2025 | Jun 6, 2025 |
| 8-K |
Current report
Officer or director change
|
Jun 12, 2025 | Jun 6, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 11, 2025 | Jun 10, 2025 |
| 4 | Insider transaction | Jun 10, 2025 | Jun 9, 2025 |
| 4 | Insider transaction | May 23, 2025 | May 21, 2025 |
| 4 | Insider transaction | May 21, 2025 | May 20, 2025 |
| 10-Q | Quarterly report | May 15, 2025 | Mar 31, 2025 |
| 8-K |
Current report
Results of operations
|
May 15, 2025 | May 15, 2025 |
| 8-K |
Current report
Other events
|
May 7, 2025 | May 7, 2025 |
| 8-K |
Current report
Auditor change
|
Apr 22, 2025 | Apr 17, 2025 |
| 8-K |
Current report
Other events
|
Apr 9, 2025 | Apr 9, 2025 |
| 10-K | Annual report | Mar 31, 2025 | Dec 31, 2024 |
| 8-K |
Current report
Results of operations
|
Mar 31, 2025 | Mar 31, 2025 |
| 3 | Initial insider ownership | Mar 4, 2025 | Feb 19, 2025 |
| 8-K |
Current report
Officer or director change, Other events
|
Feb 20, 2025 | Feb 19, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Feb 7, 2025 | — |
| 424B3 | Prospectus | Jan 29, 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 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 23, 2025 | — |
| S-1 | Registration statement | Jan 21, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Jan 17, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Jan 17, 2025 | Jan 16, 2025 |
| 424B5 | Prospectus supplement | Jan 17, 2025 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Jan 15, 2025 | Jan 14, 2025 |
| 424B5 | Prospectus supplement | Jan 15, 2025 | — |
| 8-K |
Current report
Material agreement, Other events
|
Jan 14, 2025 | Jan 13, 2025 |
| 424B5 | Prospectus supplement | Jan 14, 2025 | — |
| 8-K |
Current report
Other events
|
Jan 13, 2025 | Jan 13, 2025 |
| D | Filing | Jan 7, 2025 | — |
| D | Filing | Jan 3, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Dec 27, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Dec 26, 2024 | Dec 23, 2024 |
| SCHEDULE 13G | Ownership over 5% (passive) | Dec 26, 2024 | — |
| 424B5 | Prospectus supplement | Dec 23, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Dec 20, 2024 | Dec 19, 2024 |
| 424B5 | Prospectus supplement | Dec 20, 2024 | — |
| 8-K |
Current report
Other events
|
Dec 19, 2024 | Dec 18, 2024 |
| 10-Q | Quarterly report | Nov 14, 2024 | Sep 30, 2024 |
| 8-K |
Current report
Results of operations
|
Nov 14, 2024 | Nov 14, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Nov 13, 2024 | — |
| 8-K |
Current report
Other events
|
Nov 7, 2024 | Nov 7, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 13, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 12, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 12, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Sep 12, 2024 | Sep 11, 2024 |
| 4 | Insider transaction | Aug 15, 2024 | Aug 13, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2024 | Aug 14, 2024 |
| 10-Q | Quarterly report | Aug 14, 2024 | Jun 30, 2024 |
| 3 | Initial insider ownership | Aug 9, 2024 | Aug 1, 2024 |
| 424B3 | Prospectus | Aug 5, 2024 | — |
| EFFECT | Filing | Aug 1, 2024 | — |
| 8-K |
Current report
Officer or director change
|
Aug 1, 2024 | Jul 15, 2024 |
| CORRESP | Letter to the SEC | Jul 30, 2024 | — |
| UPLOAD | Letter from the SEC | Jul 29, 2024 | — |
| S-1 | Registration statement | Jul 26, 2024 | — |
| 8-K |
Current report
Other events
|
Jul 24, 2024 | Jul 19, 2024 |
| D | Filing | Jul 24, 2024 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Jul 12, 2024 | Jul 11, 2024 |
| 8-K |
Current report
Agreement ended, Other events
|
Jul 5, 2024 | Jul 3, 2024 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Jul 2, 2024 | Jul 1, 2024 |
| EFFECT | Filing | Jul 1, 2024 | — |
| CORRESP | Letter to the SEC | Jun 27, 2024 | — |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jun 21, 2024 | Jun 17, 2024 |
| 4 | Insider transaction | Jun 11, 2024 | Jun 7, 2024 |
| 4 | Insider transaction | Jun 10, 2024 | Jun 6, 2024 |
| 8-K |
Current report
Other events
|
May 28, 2024 | May 28, 2024 |
| UPLOAD | Letter from the SEC | May 24, 2024 | — |
| S-3 | Shelf registration | May 20, 2024 | — |
| RW | Form rw | May 20, 2024 | — |
| S-1 | Registration statement | May 17, 2024 | — |
| 424B5 | Prospectus supplement | May 17, 2024 | — |
| 8-K |
Current report
Material agreement, Other events
|
May 17, 2024 | May 16, 2024 |
| 8-K |
Current report
Results of operations
|
May 9, 2024 | May 9, 2024 |
| 10-Q | Quarterly report | May 9, 2024 | Mar 31, 2024 |
| DEFA14A | Additional proxy material | May 8, 2024 | — |
| DEF 14A | Proxy statement | May 8, 2024 | Jun 17, 2024 |
| ARS | Annual report to shareholders | May 8, 2024 | Dec 31, 2023 |
| PRE 14A | Preliminary proxy statement | Apr 22, 2024 | Jun 17, 2024 |
| 8-K |
Current report
Results of operations
|
Apr 2, 2024 | Apr 2, 2024 |
| 10-K | Annual report | Apr 1, 2024 | Dec 31, 2023 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Feb 27, 2024 | Feb 26, 2024 |
| 4 | Insider transaction | Feb 22, 2024 | Feb 20, 2024 |
| 4 | Insider transaction | Feb 20, 2024 | Feb 15, 2024 |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 6, 2024 | — |
| 8-K |
Current report
Listing notice
|
Jan 26, 2024 | Jan 24, 2024 |
| 424B3 | Prospectus | Dec 28, 2023 | — |
| EFFECT | Filing | Dec 27, 2023 | — |
| CORRESP | Letter to the SEC | Dec 22, 2023 | — |
| UPLOAD | Letter from the SEC | Dec 21, 2023 | — |
| S-1 | Registration statement | Dec 19, 2023 | — |
| D | Filing | Dec 19, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Dec 8, 2023 | Dec 6, 2023 |
| 8-K |
Current report
Results of operations, Other events
|
Nov 9, 2023 | Nov 9, 2023 |
| 10-Q | Quarterly report | Nov 9, 2023 | Sep 30, 2023 |
| 4 | Insider transaction | Oct 3, 2023 | Oct 1, 2023 |
| S-8 | Employee stock plan registration | Sep 29, 2023 | — |
| 8-K |
Current report
Other events
|
Aug 21, 2023 | Aug 21, 2023 |
| 8-K |
Current report
Results of operations
|
Aug 10, 2023 | Aug 10, 2023 |
| 10-Q | Quarterly report | Aug 10, 2023 | Jun 30, 2023 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jul 26, 2023 | Jul 20, 2023 |
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
- 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.