Halifax, Nova Scotia--(Newsfile Corp. - February 21, 2023) - Sona Nanotech Inc. (CSE: SONA) (OTCQB: SNANF) (the "Company" or "Sona") further to the Company's announcement dated January 26, 2023 that it had entered into a binding agreement (the "Definitive Agreement") to acquire Siva Therapeutics, Inc. ("Siva"), the developer of Targeted Hyperthermia Therapy photo thermal therapy for cancer tumors using Sona's uniquely biocompatible gold nanorods (the "Proposed Transaction"). Sona has increased the proposed Working Capital Financing from 5,000,000 common shares up to 11,000,000 common shares at an offering price of $0.10 per share for corporate development and general working capital purposes. The Working Capital Financing is necessary and integral for Sona to be able to complete the Proposed Transaction, but is not contingent upon the closing of the Proposed Transaction. The closing of this offering has also been extended, and is now expected to occur by February 28, 2023.

Contact:
David Regan, CEO
+1-902-536-1932
david@sonanano.com

About Sona Nanotech Inc.

Sona Nanotech is a nanotechnology life sciences firm that has developed multiple proprietary methods for the manufacture of various types of gold nanoparticles. The principal business carried out and intended to be continued by Sona is the development and application of its proprietary technologies for use in multiplex diagnostic testing platforms that will improve performance over existing tests in the market. Sona Nanotech's gold nanorod particles are CTAB (cetyltrimethylammonium) free, eliminating the toxicity risks associated with the use of other gold nanorod technologies in medical applications. It is expected that Sona's gold nanotechnologies may be adapted for use in applications, as a safe and effective delivery system for multiple medical treatments, subject to the approval of various regulatory boards, including Health Canada and the FDA.

About Siva Therapeutics, Inc.

Siva Therapeutics Inc is developing Targeted Hyperthermia™, a photothermal cancer therapy, which uses therapeutic heat to treat solid cancer tumors. The heat is delivered to tumors by infrared light that is absorbed by SivaRods™ gold nanorods in the tumor and re-emitted as heat. Therapeutic heat (44°C) stimulates the immune system, shrinks tumors, inactivates cancer stem cells, and increases tumor perfusion - thus enabling drugs to reach all tumor compartments more effectively. The size, shape, and surface chemistry of the nanorods target the leaky vasculature of solid tumors, and the selective thermal sensitivity of tumor tissue enables the therapy to deliver clean margins. Targeted Hyperthermia promises to be safe, effective, minimally invasive, competitive in cost, and a valuable adjunct to drug therapy and other cancer treatments. Siva's initial clinical targets include colorectal, esophageal, and pancreatic cancers.

CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING INFORMATION: This press release includes certain "forward-looking statements" under applicable Canadian securities legislation, including statements regarding the benefits to accrue to Sona from the Proposed Transaction. Forward-looking statements are necessarily based upon a number of assumptions or estimates that, while considered reasonable, are subject to known and unknown risks, uncertainties, and other factors which may cause the actual results and future events to differ materially from those expressed or implied by such forward-looking statements, including the risk that Sona and Siva may not be able to successfully complete the Proposed Transaction, secure animal and human clinical studies, or develop the envisioned therapy. There can be no assurance that such statements will prove to be accurate, as actual results and future events could differ materially from those anticipated in such statements. Accordingly, readers should not place undue reliance on forward-looking statements. Sona disclaims any intention or obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as required by law.

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