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 |
| 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 |
| 8-K |
Current report
Other events
|
Sep 14, 2026 | Sep 14, 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 |
| 8-K |
Current report
Officer or director change, Other events
|
Jul 21, 2026 | Jul 21, 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 |
| 8-K |
Current report
Other events
|
Feb 10, 2026 | Feb 10, 2026 |
| 8-K |
Current report
Other events
|
Jan 20, 2026 | Jan 20, 2026 |
| 8-K |
Current report
Other events
|
Dec 23, 2025 | Dec 23, 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 |
| S-3 | Shelf registration | Nov 20, 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 | — |
| 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 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
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 |
| 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 |
| 8-K |
Current report
Officer or director change
|
Jun 12, 2025 | Jun 6, 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 |
| 8-K |
Current report
Officer or director change, Other events
|
Feb 20, 2025 | Feb 19, 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 | — |
| S-1 | Registration statement | Jan 21, 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 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Dec 26, 2024 | Dec 23, 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 |
| 8-K |
Current report
Other events
|
Nov 7, 2024 | Nov 7, 2024 |
| 8-K |
Current report
Results of operations
|
Aug 14, 2024 | Aug 14, 2024 |
| 10-Q | Quarterly report | Aug 14, 2024 | Jun 30, 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 |
| 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 |
| 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 |
| 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 |
| 424B3 | Prospectus | Jun 20, 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 | — |
| ARS | Annual report to shareholders | Jun 9, 2023 | Dec 31, 2022 |
| DEFA14A | Additional proxy material | Jun 9, 2023 | — |
| DEF 14A | Proxy statement | Jun 9, 2023 | Jul 20, 2023 |
| S-1 | Registration statement | Jun 8, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Other events
|
Jun 2, 2023 | May 31, 2023 |
| 424B5 | Prospectus supplement | Jun 1, 2023 | — |
| 8-K |
Current report
Other events
|
May 24, 2023 | May 24, 2023 |
| 8-K |
Current report
Other events
|
May 16, 2023 | May 16, 2023 |
| 8-K |
Current report
Results of operations
|
May 11, 2023 | May 11, 2023 |
| 10-Q | Quarterly report | May 11, 2023 | Mar 31, 2023 |
| 424B3 | Prospectus | May 10, 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 | — |
| S-1 | Registration statement | Apr 28, 2023 | — |
| 8-K |
Current report
Other events
|
Apr 20, 2023 | Apr 20, 2023 |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| 424B3 | Prospectus | Apr 20, 2023 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale
|
Apr 20, 2023 | Apr 18, 2023 |
| 424B5 | Prospectus supplement | Apr 19, 2023 | — |
| 8-K |
Current report
Other events
|
Apr 18, 2023 | Apr 18, 2023 |
| 8-K |
Current report
Other events
|
Apr 17, 2023 | Apr 17, 2023 |
| 8-K |
Current report
Results of operations
|
Mar 22, 2023 | Mar 22, 2023 |
| 10-K | Annual report | Mar 22, 2023 | Dec 31, 2022 |
| 8-K |
Current report
Other events
|
Mar 10, 2023 | Mar 10, 2023 |
| 8-K |
Current report
Officer or director change
|
Feb 22, 2023 | Feb 17, 2023 |
| 8-K |
Current report
Other events
|
Feb 13, 2023 | Feb 9, 2023 |
| 8-K |
Current report
Change to shareholder rights, Bylaw or fiscal year change, Other events
|
Jan 25, 2023 | Jan 24, 2023 |
| 8-K |
Current report
Shareholder vote results, Regulation FD disclosure
|
Jan 6, 2023 | Jan 4, 2023 |
| 8-K |
Current report
Other events
|
Dec 21, 2022 | Dec 21, 2022 |
| DEFA14A | Additional proxy material | Dec 2, 2022 | — |
| DEF 14A | Proxy statement | Nov 30, 2022 | Jan 4, 2023 |
| D | Filing | Nov 23, 2022 | — |
| 8-K |
Current report
Material agreement, Unregistered share sale, Change to shareholder rights, Bylaw or fiscal year change
|
Nov 16, 2022 | Nov 16, 2022 |
| PRE 14A | Preliminary proxy statement | Nov 16, 2022 | Jan 4, 2023 |
| 8-K |
Current report
Results of operations
|
Nov 10, 2022 | Nov 10, 2022 |
| 10-Q | Quarterly report | Nov 10, 2022 | Sep 30, 2022 |
| 8-K |
Current report
Officer or director change
|
Sep 29, 2022 | Sep 26, 2022 |
| 8-K |
Current report
Listing notice
|
Aug 26, 2022 | Aug 25, 2022 |
| 8-K |
Current report
Shareholder vote results
|
Aug 12, 2022 | Aug 9, 2022 |
| 8-K |
Current report
Results of operations
|
Aug 11, 2022 | Aug 11, 2022 |
| 10-Q | Quarterly report | Aug 11, 2022 | Jun 30, 2022 |
| DEFA14A | Additional proxy material | Jun 30, 2022 | — |
| DEF 14A | Proxy statement | Jun 30, 2022 | Aug 9, 2022 |
| 8-K |
Current report
Results of operations
|
May 12, 2022 | May 12, 2022 |
| 10-Q | Quarterly report | May 12, 2022 | Mar 31, 2022 |
| 8-K |
Current report
Officer or director change
|
May 10, 2022 | May 4, 2022 |
| 8-K |
Current report
Change in control, Bylaw or fiscal year change
|
May 2, 2022 | Apr 27, 2022 |
| 10-K/A | Amended annual report | Apr 29, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Results of operations
|
Mar 22, 2022 | Mar 22, 2022 |
| 10-K | Annual report | Mar 22, 2022 | Dec 31, 2021 |
| 8-K |
Current report
Listing notice
|
Mar 3, 2022 | Feb 25, 2022 |
| 25-NSE | Delisting notice | Dec 21, 2021 | — |
| 8-K |
Current report
Results of operations
|
Nov 10, 2021 | Nov 10, 2021 |
| 10-Q | Quarterly report | Nov 10, 2021 | Sep 30, 2021 |
| 8-K |
Current report
Results of operations
|
Aug 12, 2021 | Aug 12, 2021 |
| 10-Q | Quarterly report | Aug 12, 2021 | Jun 30, 2021 |
| 8-K |
Current report
Shareholder vote results
|
Jun 21, 2021 | Jun 15, 2021 |
| EFFECT | Filing | May 21, 2021 | — |
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)
Other Pharmaceutical Preparations companies
- ELI LILLY & Co LLY
- Johnson & Johnson JNJ
- AbbVie Inc. ABBV
- Merck & Co., Inc. MRK
- Novartis AG NVS
- Astrazeneca PLC AZN
- Abbott Laboratories ABT
- Novo Nordisk A S NVO
Source: SEC EDGAR filings. This is company-reported data, not investment advice.