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TENAX THERAPEUTICS, INC.

For the period ended Dec 31, 2025. Filed Mar 10, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 10, 2026

TENX$1.78+5.3%Stored close · as of Nov 9, 2026

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Contents

PART I

CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS

This Annual Report on Form 10-K contains various forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the “Securities Act”) and Section 21E of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), which represent our expectations or beliefs concerning future events. Forward-looking statements include statements that are predictive in nature, which depend upon or refer to future events or conditions, and/or which include words such as “believes,” “plans,” “intends,” “anticipates,” “estimates,” “expects,” “may,” “will” or similar expressions. In addition, any statements concerning future financial performance, ongoing strategies or prospects, and possible future actions, including any potential strategic transaction involving us, which may be provided by our management, are also forward-looking statements. These statements are not guarantees of future performance, and we undertake no obligation to publicly update any forward-looking statements, whether as a result of new information, future events, or otherwise, except as required by law.

Forward-looking statements are based on current expectations and projections about future events, actual events and results may differ materially from those expressed or forecasted in forward-looking statements due to a number of factors. You should understand that the following important factors, in addition to those discussed in under the heading “Risk Factors” included in Item 1A of Part I of this Annual Report on Form 10-K and in any of our filings with the U.S. Securities and Exchange Commission (the “SEC”) pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, could affect our stock price or future results and could cause those results to differ materially from those expressed in such forward-looking statements:

our ability to develop and ultimately commercialize our current product candidates, and any product candidate which we may develop or in-license in the future;

delays in the commencement, enrollment and completion of clinical testing, as well as the analysis and reporting of results from such clinical testing;

our ability, our partners’ abilities, and third parties’ abilities to protect and assert intellectual property rights;

the success of nonclinical and clinical studies of our product candidates;

the need and ability to obtain regulatory approval of our product candidates and any delays in such regulatory review;

potential risks related to any collaborations we may enter into for our product candidates;

our ability to establish an effective sales and marketing infrastructure;

our estimates regarding the potential market opportunity for our product candidates;

competition from existing products or new products that may emerge;

potential side effects of our product candidates that could delay or prevent commercialization;

potential product liability claims and adverse events;

potential liabilities associated with hazardous materials;

our ability to maintain adequate insurance policies;

our dependence on third-party manufacturers and clinical research organizations (“CROs”);

our ability to establish or maintain collaborations, licensing or other arrangements;

costs related to and outcomes of potential litigation;

compliance with obligations under intellectual property licenses with third parties;

our ability to adequately support future growth;

our ability to attract and retain personnel, including our executive team, advisors and members of our Board of Directors; and

geopolitical uncertainties, including in the Middle East and the Russian invasion of and war against the country of Ukraine.

The forward-looking statements in this Annual Report on Form 10-K represent our views as of the date such statements are made. These forward-looking statements should not be relied upon as representing our views as of any date subsequent to the date such statements are made.

NOTES

All references in this Annual Report on Form 10-K to the “Company,” “Tenax”, “we”, “our” and “us” means Tenax Therapeutics, Inc.

This Annual Report on Form 10-K contains references to our trademarks and to trademarks belonging to other entities. Solely for convenience, trademarks and trade names referred to in this Annual Report on Form 10-K, including logos, artwork and other visual displays, may appear without the ® or TM symbols, but such references are not intended to indicate, in any way, that we will not assert, to the fullest extent under applicable law, our rights or the rights of the applicable licensor to these trademarks and trade names. We do not intend our use or display of other companies’ trade names or trademarks to imply a relationship with, or endorsement or sponsorship of us by, any other company.

Our business is subject to significant risks and uncertainties that make an investment in us speculative and risky. Below we summarize what we believe are the principal risk factors, but these are not the only risks we face, and you should carefully review and consider the full discussion of our risk factors in the section titled “Risk Factors”, together with the other information in this Annual Report on Form 10-K. If any of the following risks materializes (or if any of those listed elsewhere in this Annual Report on Form 10-K materialize), our business, reputation, financial condition, results of operations, revenue, and future prospects could be seriously harmed. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business.

Risks Related to Our Business and Operations

We are limited in the number of products we can simultaneously pursue and therefore our survival depends on our success with a small number of product opportunities, and in particular, oral levosimendan as our prioritized product candidate.

We currently have no approved drug products for sale, and we cannot guarantee that we will ever have marketable drug products.

Delays in the enrollment and completion of clinical testing could result in increased costs to us and delay or limit our ability to obtain regulatory approval of our product candidates.

We are conducting two Phase 3 clinical trials, LEVEL and LEVEL-2 for oral levosimendan, which are expensive and time consuming, and the outcomes of the clinical trials are uncertain.

The market may not accept our products.

Nonfinal results from our clinical trials announced or published from time to time on an interim, top-line, or preliminary basis, and conclusions that may be drawn from such results, may change as more patient data or analysis of this data become available, and these results are subject to audit and verification procedures that could result in material changes in the final data. Similarly, discrete observations during clinical trials may not reflect the general response to the products that will be revealed at the conclusion of the clinical trials or in future, widespread use of the product once marketed.

Any collaboration we enter with third parties to develop and commercialize any future product candidates may place the development of our product candidates outside our control, may require us to relinquish important rights or may otherwise be on terms unfavorable to us.

Risks Related to Our Financial Position and Need for Additional Capital

We will require substantial additional funding to further develop, file marketing authorization applications, and if approved, commercialize our product candidates, including to complete the open label extension stage of our ongoing Phase 3 LEVEL and LEVEL-2 trials of levosimendan; as well as to initiate or complete any future imatinib Phase 3 trial.

Failure to obtain this necessary capital when needed on acceptable terms, or at all, or execute on an alternative strategic path, could force us to delay, limit, reduce or terminate our clinical trials, product development and marketing efforts, and business operations.

We may be required to make milestone and royalty payments to the licensor of the levosimendan intellectual property in connection with the development and commercialization of levosimendan, which could adversely affect the profitability of levosimendan, if approved.

We expect a number of factors to cause our operating results to fluctuate on a quarterly and annual basis, which may make it difficult to predict our future performance.

We have incurred losses since our inception, expect to continue to incur losses in the foreseeable future, and may never become profitable.

Risks Relating to Our Industry

Intense competition might render our product candidates noncompetitive or obsolete.

Our activities are, and will continue to be, subject to extensive government regulation, which is difficult to predict, expensive and time consuming, and we will not be able to sell our products without regulatory approval.

We may not receive all of the anticipated market exclusivity benefits of imatinib’s orphan drug designation, if we prioritize imatinib’s development in the future.

Even after products are commercialized, we would expect to spend considerable time and money complying with federal, state, and foreign laws and regulations governing their sale, and, if we are unable to fully comply with such laws and regulations, we could face substantial penalties.

We are subject to uncertainty relating to healthcare reform measures and reimbursement policies that, if not favorable to our products, could hinder or prevent our products’ commercial success, if any of our product candidates are approved.

Governments outside the United States tend to impose strict price controls and reimbursement approval policies, which may adversely affect our prospects for generating revenue outside the United States.

Product liability lawsuits against us could cause us to incur substantial liabilities and limit commercialization of any products that we may develop.

Our business and operations would suffer in the event of computer system failures, cyber-attacks or deficiencies in our cybersecurity.

Risks Related to Our Dependence on Third Parties

We have historically relied on and we will continue to rely on third parties substantially to conduct our nonclinical testing and clinical studies and other aspects of our development programs. If those third parties do not satisfactorily perform their contractual obligations or meet anticipated deadlines, the development of our product candidates could be adversely affected.

We depend on third parties to formulate and manufacture our products.

If we fail to attract and retain senior management and key scientific and operational personnel, we may be unable to successfully develop and commercialize our product candidates.

We expect to need to increase the size of our organization to further develop our product candidates, and we may experience difficulties in managing growth.

We currently have very little marketing capabilities and no sales organization. If we are unable to establish sales and marketing capabilities on our own or through third parties, we will be unable to successfully commercialize our products, if approved, or generate product revenue.

Risks Related to Intellectual Property

Our success will depend in part on obtaining and maintaining effective patent and other intellectual property protection for our product candidates and proprietary technology.

We rely on confidentiality agreements that, if breached, may be difficult to enforce and could have a material adverse effect on our business and competitive position.

We may incur substantial costs as a result of litigation or other proceedings relating to patent and other intellectual property rights and we may be unable to protect our rights to, or use, our technology.

Under current law, we may not be able to enforce all employees’ covenants not to compete.

We may infringe or be alleged to infringe intellectual property rights of third parties.

Risks Related to Owning Our Common Stock

Our share price has been volatile, and may continue to be volatile, which may subject us to securities class action litigation in the future.

Investors may experience dilution of their ownership interests because of the future issuance of additional shares of our common stock or securities convertible into common stock.

Anti-takeover provisions in our corporate charter documents and under Delaware law could make an acquisition of us more difficult, which could discourage takeover attempts and lead to management entrenchment, and the market price of our common stock may be lower as a result.

Our Bylaws contain an exclusive forum provision for certain disputes, which could limit our stockholders’ ability to obtain a favorable judicial forum for disputes with us or our directors, officers, employees, or agents.

We have not paid cash dividends in the past and do not expect to pay dividends in the future. Any return on investment may be limited to the value of our common stock.

Our ability to use our net operating loss carryforwards and certain other tax attributes to offset future taxable income may be subject to certain limitations.

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