| Delaware | 001-36304 | 45-3215903 |
| (State or other jurisdiction of incorporation) | (Commission File Number) | (I.R.S. Employer Identification No.) |
| 411 Swedeland Road, Suite 23-1080 | |
| King of Prussia, PA | 19406 |
| (Address of principal executive offices) | (Zip Code) |
| ☐ | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) |
| ☐ | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) |
| ☐ | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| ☐ | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |
| Title of each class: | Trading Symbol(s): | Name of each exchange on which registered: | ||
| Common Stock, par value $0.0001 per share | PHIO | The Nasdaq Capital Market |
| Exhibit No. | Description | |
| 99.1 | Press release issued by the Company on March 30, 2026 | |
| 104 | Cover Page Interactive Data File (embedded within the Inline XBRL document). |
| PHIO PHARMACEUTICALS CORP. | ||
| Date: March 30, 2026 | By: | /s/ Robert J. Bitterman |
| Robert J. Bitterman President & Chief Executive Officer | ||