Marlborough, Massachusetts--(Newsfile Corp. - December 23, 2024) - Phio Pharmaceuticals Corp. (NASDAQ: PHIO), a clinical-stage biotechnology company that develops therapeutics using its INTASYL siRNA gene silencing technology to make the body's immune cells more effective in killing cancer cells, today announced that it has entered into definitive agreements for the purchase and sale of an aggregate of 240,000 shares of its common stock at a purchase price of $2.00 per share in a registered direct offering priced at-the-market under Nasdaq rules. In addition, in a concurrent private placement, the Company will issue unregistered warrants to purchase up to 240,000 shares of common stock. The warrants will have an exercise price of $2.00 per share, will be exercisable upon issuance and expire five years following the date of issuance. The closing of the offering is expected to occur on or about December 24, 2024, subject to the satisfaction of customary closing conditions.

H.C. Wainwright & Co. is acting as the exclusive placement agent for the offering.

The aggregate gross proceeds to the Company from the offering are expected to be $0.48 million, before deducting the placement agent fees and other offering expenses payable by the Company. The Company currently intends to use the net proceeds from the offering for working capital and other general corporate purposes.

The shares of common stock (but not the warrants issued in the private placement or the shares of common stock underlying such warrants) are being offered by the Company pursuant to a "shelf" registration statement on Form S-3 (File No. 333-279557) filed with the Securities and Exchange Commission ("SEC") on May 20, 2024 and became effective on July 1, 2024. The registered direct offering of the shares of common stock is being made only by means of a prospectus, including a prospectus supplement, forming a part of the effective registration statement. The prospectus supplement and the accompanying prospectus relating to the shares of common stock being offered in the registered direct offering will be filed with the SEC and be available at the SEC's website at www.sec.gov. Electronic copies of the prospectus supplement and the accompanying prospectus relating to the registered direct offering may also be obtained, when available, by contacting H.C. Wainwright & Co., LLC at 430 Park Avenue, 3rd Floor, New York, NY 10022, by telephone at (212) 856-5711 or e-mail at placements@hcwco.com.

The warrants described above are being issued in a concurrent private placement under Section 4(a)(2) of the Securities Act of 1933, as amended (the "Securities Act"), and Regulation D promulgated thereunder and, along with the shares of common stock underlying the warrants, have not been registered under the Securities Act, or applicable state securities laws. Accordingly, the warrants and underlying shares of common stock may not be offered or sold in the United States except pursuant to an effective registration statement or an applicable exemption from the registration requirements of the Securities Act and such applicable state securities laws.

This press release shall not constitute an offer to sell or the solicitation of an offer to buy any of the securities described herein, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to the registration or qualification under the securities laws of any such state or jurisdiction.

About Phio Pharmaceuticals Corp.

Phio Pharmaceuticals Corp. (NASDAQ: PHIO) is a clinical-stage biotechnology company advancing its proprietary INTASYL siRNA gene silencing technology to eliminate cancer.  INTASYL can target and silence virtually any gene with high degree of specificity across a wide range of cell types and tissues. INTASYL is designed to enhance the ability of immune cells to more effectively kill tumor cells.  INTASYL has also demonstrated enhancement adoptive cell therapy. Notably, INTASYL is a self-delivering RNAi technology focused on immuno-oncology therapeutics without the need for formulation enhancements or manipulations to reach its target.  

Phio's lead clinical program, PH-762, is an INTASYL compound that silences PD-1. PH-762 is a potential non-surgical treatment for skin cancers. The on-going Phase 1b trial (NCT# 06014086) received FDA clearance for an Investigational New Drug Application to evaluate PH-762 in the treatment of cutaneous SCC, melanoma and Merkel cell carcinoma in second quarter of 2023.