TNXP

Tonix Pharmaceuticals Holding Corp. (Nasdaq: TNXP), a clinical-stage biopharmaceutical company, today announced that Zeil Rosenberg, M.D., M.P.H., Executive Vice President, Medical and Farooq Nasar, Ph.D., Senior Principal Investigator, both of Tonix Pharmaceuticals, will deliver oral presentations at the World Vaccine Congress, which will be held in Washington D.C., April 3 - 6, 2023. Copies of the Company’s presentations will be available under the Scientific Presentations tab of the Tonix website at www.tonixpharma.com following the conference. Additional meeting information can be found on the World Vaccine Congress website here.

In addition, Sina Bavari, Ph.D., Executive Vice President, Infectious Disease Research and Development of Tonix Pharmaceuticals will be moderating a panel of key opinion leaders discussing Mpox and the challenges and opportunities in vaccine development.

Oral Presentation Details

Presenter:	Zeil Rosenberg, M.D., M.P.H. (Tonix Pharmaceuticals)
Title:	A Live Attenuated Orthopoxvirus (Horsepox) Vaccine for Mpox and Smallpox
Location:	Walter E. Washington Convention Center, Washington D.C.
Date:	Wednesday April 5, 2023
Time:	12:25 p.m. ET

Oral Presentation Details

Presenter:	Farooq Nasar, Ph.D. (Tonix Pharmaceuticals)
Title:	The Development of Horsepox Virus as a Vaccine Platform: Evaluation of TNX-1800 as a SARS-CoV-2 Vaccine
Location:	Walter E. Washington Convention Center, Washington D.C.
Date:	Thursday April 6, 2023
Time:	10:10 a.m. ET

Panel Details

Title:	Mpox - Challenges and Opportunities in Vaccine Development
Panel:	Sina Bavari, Ph.D. (Tonix Pharmaceuticals); David Evans, Ph.D. (University of Alberta); Jose Esparza, M.D., Ph.D. (University of Maryland); Deborah Birx, M.D. (BGR Group); Michael Merchlinsky, Ph.D. (HHS/BARDA)
Location:	Walter E. Washington Convention Center, Washington D.C.
Date:	Thursday April 6, 2023
Time:	11:30 a.m. ET

Tonix Pharmaceuticals Holding Corp.*

Tonix is a clinical-stage biopharmaceutical company focused on discovering, licensing, acquiring and developing therapeutics to treat and prevent human disease and alleviate suffering. Tonix’s portfolio is composed of central nervous system (CNS), rare disease, immunology and infectious disease product candidates. Tonix’s CNS portfolio includes both small molecules and biologics to treat pain, neurologic, psychiatric and addiction conditions. Tonix’s lead CNS candidate, TNX-102 SL (cyclobenzaprine HCl sublingual tablet), is in mid-Phase 3 development for the management of fibromyalgia with interim data expected in the second quarter of 2023. TNX-102 SL is also being developed to treat Long COVID, a chronic post-acute COVID-19 condition, for which a Phase 2 study was initiated in the third quarter of 2022. TNX-1900 (intranasal potentiated oxytocin), a small molecule in development for chronic migraine, is currently enrolling with interim data expected in the fourth quarter of 2023. TNX-601 ER (tianeptine hemioxalate extended-release tablets), a once-daily formulation of tianeptine being developed as a treatment for major depressive disorder (MDD), is also currently enrolling with interim data expected in the fourth quarter of 2023. TNX-1300 (cocaine esterase) is a biologic designed to treat cocaine intoxication and has been granted Breakthrough Therapy designation by the FDA. A Phase 2 study of TNX-1300 is expected to be initiated in the second quarter of 2023. Tonix’s rare disease portfolio includes TNX-2900 (intranasal potentiated oxytocin) for the treatment of Prader-Willi syndrome. TNX-2900 has been granted Orphan Drug designation by the FDA. Tonix’s immunology portfolio includes biologics to address organ transplant rejection, autoimmunity and cancer, including TNX-1500, which is a humanized monoclonal antibody targeting CD40-ligand (CD40L or CD154) being developed for the prevention of allograft and xenograft rejection and for the treatment of autoimmune diseases. A Phase 1 study of TNX-1500 is expected to be initiated in the second quarter of 2023. Tonix’s infectious disease pipeline includes TNX-801, a vaccine in development to prevent smallpox and mpox, for which a Phase 1 study is expected to be initiated in the second half of 2023. TNX-801 also serves as the live virus vaccine platform or recombinant pox vaccine platform for other infectious diseases. The infectious disease portfolio also includes TNX-3900, a class of broad-spectrum small molecule oral antivirals.

*All of Tonix’s product candidates are investigational new drugs or biologics and have not been approved for any indication.

This press release and further information about Tonix can be found at www.tonixpharma.com.

Forward Looking Statements

Certain statements in this press release are forward-looking within the meaning of the Private Securities Litigation Reform Act of 1995. These statements may be identified by the use of forward-looking words such as “anticipate,” “believe,” “forecast,” “estimate,” “expect,” and “intend,” among others. These forward-looking statements are based on Tonix's current expectations and actual results could differ materially. There are a number of factors that could cause actual events to differ materially from those indicated by such forward-looking statements. These factors include, but are not limited to, risks related to the failure to obtain FDA clearances or approvals and noncompliance with FDA regulations; delays and uncertainties caused by the global COVID-19 pandemic; risks related to the timing and progress of clinical development of our product candidates; our need for additional financing; uncertainties of patent protection and litigation; uncertainties of government or third party payor reimbursement; limited research and development efforts and dependence upon third parties; and substantial competition. As with any pharmaceutical under development, there are significant risks in the development, regulatory approval and commercialization of new products. Tonix does not undertake an obligation to update or revise any forward-looking statement. Investors should read the risk factors set forth in the Annual Report on Form 10-K for the year ended December 31, 2022, as filed with the Securities and Exchange Commission (the “SEC”) on March 13, 2023, and periodic reports filed with the SEC on or after the date thereof. All of Tonix's forward-looking statements are expressly qualified by all such risk factors and other cautionary statements. The information set forth herein speaks only as of the date thereof.

Contacts

Jessica Morris (corporate)Tonix Pharmaceuticalsinvestor.relations@tonixpharma.com(862) 904-8182

Olipriya Das, Ph.D. (media)Russo PartnersOlipriya.Das@russopartnersllc.com (646) 942-5588

Peter Vozzo (investors)ICR Westwickepeter.vozzo@westwicke.com(443) 213-0505