Item 1A. RISK FACTORS

Our business is subject to numerous risks and uncertainties, including those highlighted in this section, which represent challenges we face in our efforts to successfully implement our strategy. You should carefully consider the risks described below in addition to other information set forth in this Form 10-K, including Part II, Item 7, Management’s Discussion and Analysis of Financial Condition and Results of Operations and the consolidated financial statements and related notes in Part II, Item 8. These risks, some of which have occurred and any of which may occur, alone or in combination with other events or circumstances in the future, may have a material adverse effect on our business, financial condition, cash flows, results of operations, or the trading price of our common stock. The risks described below are not the only risks we face. Additional risks and uncertainties not currently known to us, or that we currently deem to be immaterial, may occur or become material in the future. Therefore, historical financial and business performance, events and trends are often not a reliable indicator of future operating results, financial and business performance, events or trends.

Summary of Risk Factors

Risks Related to Our Financial Position and Need for Additional Capital

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Risks Related to Our Ability to Maintain an Effective Operational and Internal Controls Environment

Risks Related to Legal Proceedings

● We face risks and uncertainties related to litigation and other claims.

Risks Related to Development and Commercialization of Our Drug Candidate

Risks Related to Our Dependence on Third Parties

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Risks Related to Our Intellectual Property Rights

Risks Related to Ownership of Our Common Stock

Risks Related to Our Financial Position and Need for Additional Capital

Our cash reserves are low and we do not expect to receive substantial, if any, revenues for the foreseeable future such that we will need to raise substantial additional financing to fund our ongoing operations and manage our payment obligations, which financing continues to be extremely difficult to secure in light of the low trading price of our common stock.

As of June 30, 2025, we had an unrestricted cash balance of approximately $12.1 million and no reserved cash balance. We must continue to raise additional funds in the near term to meet our payment obligations and fund our operations. Additional funding may not be available on acceptable terms or at all. In addition, as of June 30, 2025, we had approximately 172.8 million shares of common stock unreserved for other purposes and available for issuance in new financing transactions. Our outstanding accounts payable and accrued liabilities totaled approximately $16.1 million on June 30, 2025. If we are not able to raise additional funds on a timely basis, we may be forced to delay, reduce the scope of, or eliminate one or more of our planned operating activities, including: conducting a study of leronlimab in patients with relapsed/refractory microsatellite stable colorectal cancer; conducting a study of leronlimab in patients with metastatic triple-negative breast cancer; pursuing research and development of longer-acting molecules; and evaluating

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other opportunities for pre-clinical studies and publishing data from previously conducted studies. Any delay or inability to pursue our planned activities likely will adversely affect our business, financial condition, and stock price. The continued low trading price of our common stock (with a closing price of $0.27 per share on June 30, 2025) presents a significant challenge to our ability to raise additional funds. If we deplete our cash reserves, we may have to discontinue our operations and liquidate our assets.

We are a clinical stage biotechnology company with a history of significant operating losses; we expect to continue to incur operating losses, and we may never achieve profitability.

We have not generated revenue from product sales, licensing, or other income opportunities to date. Since our inception, we have incurred operating losses each year due to costs incurred for research and development activities and general and administrative expenses related to our operations. We expect to incur losses for the foreseeable future, with no or only minimal revenues as we continue to pursue development of, and seek regulatory approvals for, leronlimab. If leronlimab fails to gain regulatory approval, or if it or other drug or biologic candidates we may acquire or license in the future do not achieve approval or market acceptance, we will not be able to generate revenue or explore other opportunities to enhance stockholder value, such as through a sale. If we fail to generate revenue or if we are unable to fund our continuing operations, our stockholders could lose a portion or all of their investments.

The amount of financing we require will depend on various factors, many of which are beyond our control. The results of our operations, financial condition, and stock price are likely to be adversely affected if we are unable to obtain additional funding on improved terms compared to previous financings.

Our future funding requirements will depend on many factors, including, but not limited to:

● the satisfaction of payment obligations we have already incurred,

If any of these factors cause our funding needs to be greater than expected, our ability to continue operations, financial condition, and stock price may be adversely affected.

Our future cash requirements may differ significantly from our current estimates.

Our cash requirements may differ significantly from our estimates from time to time, depending on a number of factors, including:

● whether our outstanding convertible notes are converted into equity,

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If we deplete our cash reserves and are unable to obtain additional funding, we may be forced to discontinue our operations and liquidate our assets.

Our auditors have issued a going concern opinion, and we will not be able to achieve our objectives and will have to cease operations if we cannot find adequate financing.

Our auditors issued an opinion, which includes a going concern explanatory paragraph, in connection with the audit of our annual consolidated financial statements for the fiscal year ended May 31, 2025. A going concern paragraph in an audit opinion means that there is substantial doubt that we can continue as an ongoing business for the 12 months from the date the consolidated financial statements are issued. If we are unable to continue as an ongoing business, we might have to liquidate our assets and the values we receive for our assets in liquidation or dissolution could be significantly lower than the values reflected in our financial statements. In addition, the inclusion of an explanatory paragraph regarding substantial doubt about our ability to continue as a going concern and our lack of cash resources may materially adversely affect our share price and our ability to raise new capital or to enter into critical contractual relations with third parties. There is no assurance that we will be able to adequately fund our operations in the future.

We have written off the value of our pre-launch inventories of leronlimab and related raw materials, the costs of which were previously capitalized, and may be unable to use all or a portion of those inventories in the development of our product candidate.

Pre-launch inventories consist of costs of raw materials and work-in-progress related to our product candidate leronlimab. As of May 31, 2023, our inventories had been written off in full for accounting purposes. Although a portion of the inventories that were written off continue to be physically maintained and currently may be eligible for use in certain clinical contexts, we may be unable to use all or a portion of these inventories in the development of our product candidate, which may require us to engage a third party to produce additional clinical supplies of leronlimab to pursue our planned studies and clinical trials.

Risks Related to Our Ability to Maintain an Effective Operational and Internal Controls Environment

The recruitment and retention of skilled directors, executives, employees, and consultants may be difficult and expensive, may result in dilution to our stockholders, and any failure to attract and retain such individuals may adversely affect our drug development and commercialization activities.

Our business depends on the skills, performance, and dedication of our officers and key scientific and technical advisors, as well as our directors. All of our current scientific advisors are independent contractors and are either self-employed or employed by other organizations. As a result, they may have conflicts of interest or other commitments, such as consulting or advisory contracts with other organizations, that may affect their ability to provide services to us in a timely manner. We likely will need to recruit additional directors, executive management, employees, and advisors, particularly scientific and technical personnel. In addition, there is currently intense competition for skilled directors, executives, and employees with relevant scientific and technical expertise, and this competition is likely to continue. We compete for these qualified personnel against companies with greater financial resources than ours. These recruitment and retention efforts likely will require additional financial resources. To successfully recruit and retain qualified employees, we will need to offer a combination of salary, cash incentives, and equity compensation. Future issuances of our equity securities for compensatory purposes will dilute existing stockholders’ ownership interests and reduce the shares available for future funding transactions. If we are unable to attract and retain individuals with relevant scientific, technical, and managerial experience, we may be forced to limit or delay our product development activities or may experience difficulties in successfully conducting our business, which would adversely affect our operations and financial condition.

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The loss, temporary loss, or transition of members of our senior management team or any other key employees may adversely affect our business.

We currently have only three executive officers. Jacob Lalezari, M.D., our current Chief Executive Officer, entered into an employment agreement with us in January 2024 that can be terminated by either party at any time. Our current Chief Financial Officer, Robert E. Hoffman, joined the Company on May 15, 2025. The complexity inherent in integrating additional key members of the senior management team with existing senior management may limit the effectiveness of any such successor or otherwise adversely affect our business. Leadership transitions and any disruptions that result are inherently difficult to manage and may cause uncertainty or a disruption to our business or increase the likelihood of turnover of other key officers and employees. Further, we may incur significant expenses related to any executive transitions. Finding suitable replacements for senior management and other key employees can be difficult, and there is no assurance we will be successful in attracting or retaining qualified personnel.

Our success depends significantly on the individual and collective contributions of our senior management team and key employees as we continue our efforts to develop leronlimab. The loss of the services of a member of our current senior management team or the inability to hire and retain experienced management personnel may have a material adverse effect on our business and operations.

If we are unable to maintain an effective system of internal control over financial reporting, we may not be able to accurately or timely report our financial results and our stock price could be adversely affected.

Section 404 of the Sarbanes-Oxley Act of 2002 and related regulations require us to evaluate the effectiveness of our internal control over financial reporting as of the end of each fiscal year, and to include a management report assessing the effectiveness of our internal control over financial reporting in our Form 10-K for that fiscal year. Failure to maintain our controls or operation of these controls may harm our operations, decrease the reliability of our financial reporting, and cause us to fail to meet our financial reporting obligations, which could adversely affect our business and reduce our stock price.

Our information technology systems could fail to perform adequately or experience data corruption, cyber-based attacks, or network security breaches.

We rely on information technology networks and systems, including the internet, to process, transmit, and store electronic information. In particular, we depend on our information technology infrastructure to effectively manage our business data, finance, and other business processes and electronic communications between our personnel and corporate partners. If we do not allocate and effectively manage the resources necessary to build and sustain an appropriate technology infrastructure, security breaches or system failures of this infrastructure may result in system disruptions, shutdowns, or unauthorized disclosure of confidential information, including patient information in violation of HIPAA requirements. In addition, our employees, contractors, and other corporate partners increasingly are working from remote locations. As a result, we rely on information technology systems that are outside our direct control. These systems are potentially vulnerable to cyber-based attacks and security breaches. In addition, cyber criminals are increasing their attacks on individual employees, including scams designed to trick victims into transferring sensitive data or funds or stealing credentials that compromise information systems. If one of our employees falls victim to these attacks, or our information technology systems or those of our partners are compromised, our operations could be disrupted, or we may suffer financial loss, loss or misappropriation of intellectual property or other critical assets, reputational harm, and regulatory fines and intervention, and our business and financial condition may be adversely affected.

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Risks Related to Legal Proceedings

Our business, operating results, and financial condition could be negatively affected as a result of litigation and other demands made by stockholders.

We are and have been involved in legal proceedings and other claims brought by stockholders, including class actions alleging securities law violations, derivative actions alleging waste of corporate assets, unjust enrichment, other breaches of fiduciary duties by former directors and current and former executive officers, and demands by activist investors. Similar actions may occur in the future. While the Company welcomes opinions of all stockholders, responding to demands, litigation, proxy contests, or other initiatives by stockholders or activist investors may divert the attention of our Board, management team, and employees from their regular duties in the pursuit of business opportunities to enhance stockholder value. Such actions may also cause our existing or potential employees, strategic partners, and stockholders to have questions or doubts about the future direction of the Company and may provide our competitors with an opportunity to exploit these concerns. Such circumstances could cause significant fluctuations in our stock price based on temporary or speculative market perceptions or other factors that do not necessarily reflect the underlying fundamentals and prospects of our business. Refer to Part II, Item 8, Note 9, Commitments and Contingencies – Legal Proceedings in this Form 10-K for additional information.

The class-action litigation filed against us could harm our business, and insurance coverage may not be sufficient to cover all related costs and damages.

The securities class action lawsuits filed against the Company in March 2021 have exhausted certain coverage allowances under the Company’s D&O insurance applicable to the relevant time period. This litigation, whether or not successful, may require us to incur substantial costs, which could harm our business and financial condition. During the course of litigation, negative public announcements regarding the results of hearings, motions, or other interim proceedings or developments may occur, which could have a further negative effect on the market price of our common stock. Refer to Part II, Item 8, Note 9, Commitments and Contingencies – Securities Class Action Lawsuits in this Form 10-K for further information.

We are subject to oversight by the SEC, FDA, and other regulatory agencies. Investigations and proceedings by those agencies may divert management’s focus and have a material adverse effect on our reputation and financial condition.

We are subject to the regulation and oversight by the SEC and state regulatory agencies, in addition to the FDA and other federal regulatory agencies. As a result, we may face legal or administrative proceedings by these agencies. We have received subpoenas from the SEC and the U.S Department of Justice (the “DOJ”) requesting documents and information concerning, among other matters, leronlimab, our public statements regarding the use of leronlimab as a potential treatment for COVID-19, HIV, and triple-negative breast cancer, related communications with the FDA, investors, and others, litigation involving former employees, our retention of investor relations consultants, and trading in our securities. On December 20, 2022, the DOJ announced the unsealing of a criminal indictment charging both our former CEO, Nader Z. Pourhassan, and Kazem Kazempour, CEO of Amarex, our former CRO. That same day, the SEC announced charges against both Mr. Pourhassan and Mr. Kazempour for alleged violations of federal securities laws. In December 2024, a federal jury convicted Mr. Pourhassan and Mr. Kazempour on a number of counts. Mr. Pourhassan and Mr. Kazempour are currently scheduled to be sentenced in September 2025. The Company is cooperating fully with the DOJ and SEC investigations. We are unable to predict the effect of any governmental investigations on our business, financial condition, or reputation. In addition, publicity surrounding any investigation, even if ultimately resolved favorably, could have a material adverse effect on our business. Refer to Part II, Item 8, Note 9, Commitments and Contingencies – Legal Proceedings in this Form 10-K for further information.

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We face risks and uncertainties related to litigation and other claims.

We are parties to a variety of litigation and other claims, in addition to the regulatory investigations and related proceedings described above. For example, two putative class action lawsuits have been filed against us and certain former officers and directors, asserting violations of federal securities laws under Section 10(b) and Section 20(a) of the Exchange Act, and alleging that the Company and certain former officers and directors made purportedly false or misleading statements and that some of the individual defendants violated Section 20A of the Exchange Act by selling shares of the Company’s common stock, purportedly while in possession of material nonpublic information. Separately, three purported stockholder derivative actions have been filed against certain former officers and directors; the Company was named as a nominal defendant. Refer to Part II, Item 8, Note 9, Commitments and Contingencies – Legal Proceedings in this Form 10-K for further information.

In addition, from time to time, we may also be involved in legal proceedings and investigations arising in the ordinary course of business, including those relating to employment matters, relationships with partners, intellectual property disputes, and other business matters. Any such claims or investigations may be time-consuming, costly, divert management resources, or otherwise have a material adverse effect on our business, financial condition, or results of operations. Any claims or litigation, even if fully indemnified or insured, could damage our reputation and make it more difficult to compete effectively or obtain adequate insurance in the future.

Risks Related to Development and Commercialization of Our Drug Candidate

Certain agreements and related license agreements require us to make significant milestone, royalty, and other payments, which will require additional financing and, in the event we do commercialize leronlimab, decrease the revenues we may ultimately receive on sales. To the extent that such milestone, royalty, and other payments are not timely made, the counterparties to such agreements in certain cases have repurchase and termination rights thereunder with respect to leronlimab.

Under agreements we have with Progenics Pharmaceuticals, Inc. (“Progenics”) and Lonza Sales AG (“Lonza”), as well as a Development and License Agreement (the “PDL License”) between Protein Design Labs (now AbbVie Inc. (“AbbVie”)) and Progenics, we are required to pay significant milestone payments, license fees for “system know-how” technology, and royalties related to leronlimab upon the occurrence of specified events. To make these milestone and license payments, we will need to raise additional funds. In addition, our royalty obligations will reduce the economic benefits to us of future sales, if any. To the extent that such milestone payments and royalties are not timely made, under their respective agreements, Progenics has certain repurchase rights relating to the assets sold to us, and AbbVie has certain termination rights relating to our license of leronlimab under the PDL License. Refer to Part II, Item 8, Note 9, Commitments and Contingencies – PRO 140 Acquisition and Licensing Arrangements in this Form 10-K for further information.

If we are unable to obtain all required regulatory approvals for leronlimab, we will not be able to commercialize our primary product candidate, which would materially and adversely affect our business, financial condition, and stock price.

Clinical testing is expensive, difficult to design and implement, may take many years to complete, and its outcome is uncertain. The research, testing, manufacturing, labeling, packaging, storage, approval, sale, marketing, advertising and promotion, pricing, export, import, and distribution of drug products are subject to extensive regulation by the FDA and other regulatory authorities in the United States and other countries, with regulations differing from country to country. We are not permitted to market a drug candidate as prescription pharmaceutical products in the United States until we receive approval from the FDA, or in foreign markets until we receive the requisite approval from comparable regulatory authorities in foreign countries. In the United States, the FDA generally requires the completion of clinical trials of each drug to establish its safety and efficacy, and extensive pharmaceutical development to ensure its quality before approval. Regulatory authorities in other jurisdictions impose similar requirements. Of the substantial number of drugs in development, only a small percentage are approved for commercialization. Receipt of necessary regulatory

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approval for the use of leronlimab for one or more indications is subject to a number of risks which include, among others:

We cannot guarantee that regulators will agree with our assessment of the results of our past or future clinical trials or that such trials will be considered by regulators to have shown safety or efficacy of our product candidate. The FDA has substantial discretion in the approval process and may refuse to accept any application or may require additional clinical trials or pre-clinical or other studies. Additionally, we have limited experience in filing the applications necessary to gain regulatory approvals and expect to continue to rely on consultants and our CROs to assist us in this process. Securing FDA approval requires the submission of pre-clinical, clinical, and/or pharmacokinetic data, information about product manufacturing processes and inspection of facilities, and supporting information for each therapeutic indication to establish a product candidate’s safety and efficacy for each indication. Our drug candidate may prove to have undesirable or unintended side effects, toxicities, or other characteristics that may preclude us from obtaining regulatory approval or prevent or limit commercial use with respect to one or all intended indications. Failure to obtain regulatory approval for leronlimab will prevent us from commercializing it as a prescription product, and our ability to generate revenue will be seriously impaired.

Disruptions at the FDA and other government agencies caused by funding shortages, Executive Orders, or global health concerns could hinder their ability to hire, retain, or deploy key leadership and other personnel, or otherwise prevent new or modified products from being developed, approved, or commercialized in a timely manner or at all, which could negatively impact our business.

The ability of the FDA to review and approve new products can be affected by a variety of factors, including government budget and funding levels, statutory, regulatory, and policy changes, the FDA’s ability to hire and retain key personnel and accept the payment of user fees, and other events that may otherwise affect the FDA’s ability to perform routine functions. In addition, government funding of other government agencies that fund research and development activities is subject to the political process, which is inherently fluid and unpredictable. President Trump has issued Executive Orders that may significantly reduce the federal workforce and could adversely affect the FDA’s ability to attract and retain qualified scientific reviewers, which could result in longer review times for our applications. Additionally, the Trump Administration is seeking to reduce research funding by the NIH for medical research. If the funding is reduced for studies related to the medical indications on which we are focused or on which researchers were or may have been considering applying for federal grants, our research and development initiatives could be delayed or otherwise affected.

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We are dependent on the success of leronlimab. If we, either alone or with collaborators, are unable to complete the clinical development of, obtain and maintain marketing approval for, or successfully commercialize leronlimab, including with respect to adequate coverage and reimbursement, or if we continue to experience significant delays in doing so, our business will be harmed.

We currently have no products approved for sale and are investing a significant portion of our resources in the development of leronlimab for marketing approval in the United States and potentially other countries. Our prospects are substantially dependent on our ability to develop, obtain marketing approval for, and successfully commercialize leronlimab in the United States in one or more disease indications. The success of our Company will depend on a number of factors, including the following:

● our ability to position leronlimab to compete with other therapies.

Many of these factors are beyond our control. If we are unable to develop, receive marketing approval for, and successfully provide for commercialization of leronlimab on our own or through third parties, or if we continue to experience delays as a result of any of these factors or otherwise, our business will be substantially harmed.

Our competitors may develop drugs that are more effective, safer, and less expensive than ours.

The biopharmaceutical industry is competitive, and our future success depends on our ability to demonstrate and maintain a competitive advantage with respect to the design, development, and commercialization of product candidates. For example, new or improved therapies in the oncology and immunology arenas are the subject of frequent announcements. If approved for marketing by the FDA, depending on the approved clinical indication, leronlimab may be competing with existing and future treatments. Our competitors may:

We expect to compete against large pharmaceutical and biotechnology companies and smaller companies that are collaborating with larger pharmaceutical companies, new companies, academic institutions, government agencies, and other public and private research organizations. These competitors, in nearly all cases, operate research and development programs that have greater financial resources than we do. Our competitors also have significantly greater experience in:

● developing drug and other product candidates,

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● undertaking pre-clinical testing and clinical trials,

● building relationships with key customers and opinion-leading physicians,

● obtaining and maintaining FDA and other regulatory approvals,

● formulating and manufacturing drugs,

● launching, marketing, and selling drugs, and

If we fail to achieve superiority over other existing or newly developed treatments, we may be unable to obtain regulatory approval. If our competitors market drugs that are less expensive, safer, or more effective than our product candidate, or which gain or maintain greater market acceptance, we may not be able to compete effectively.

We may not be able to identify, negotiate, and maintain the strategic alliances necessary to develop and commercialize our products and technologies, and we will be dependent on our corporate partners if we do.

We may seek to enter into a strategic alliance with a pharmaceutical company for further development and approval of our product candidate in one or more indications. Strategic alliances could potentially provide us with additional funds, expertise, access, and other resources in exchange for exclusive or non-exclusive licenses or other rights to the technologies and products that we are currently developing or may explore in the future. We cannot give any assurance we will be able to enter into strategic relationships with a pharmaceutical company or other strategic partner in the near future or at all or maintain our current relationships. In addition, we cannot assure that any agreements we may reach will achieve our goals or be on terms that prove to be economically beneficial to us. We anticipate that if we were to enter into strategic or contractual relationships, we may become dependent on the successful performance of our partners or counterparties. If they fail to perform as expected, such failure could adversely affect our financial condition, lead to increases in our capital needs, or hinder or delay our development efforts.

Known third-party patent rights could delay or otherwise adversely affect our planned development and sale of leronlimab. We have identified but not exhaustively analyzed other patents that could relate to our proposed products.

We are aware of patent rights held by a third party that may cover certain compositions within our leronlimab candidate. The patent holder has the right to prevent others from making, using, or selling a drug that incorporates the patented compositions, while the patent remains in force. While we believe that the third party’s patent rights will not affect our planned development, regulatory clearance, and eventual commercial production, marketing, and sale of leronlimab, there can be no assurance that this will be the case. We believe the relevant patent expires before we expect to commercially introduce leronlimab. In addition, the Hatch-Waxman exemption to U.S. patent law permits all uses of compounds in clinical trials and for other purposes reasonably related to obtaining the FDA clearance of drugs that will be sold only after patent expiration; we believe our use of leronlimab in those FDA-related activities would not infringe the patent holder’s rights. However, were the patent holder to assert its rights against us before expiration of the patent for activities unrelated to the FDA clearance, the development and ultimate sale of a leronlimab product could be significantly delayed, and we could incur expenses for defending a patent infringement suit and for damages that may relate to periods prior to the patent’s expiration. In connection with our acquisition of rights to leronlimab, our patent counsel conducted a freedom-to-operate search that identified other patents that could relate to our proposed leronlimab candidate. Based upon research and analysis to date, we believe leronlimab likely does not infringe those patent rights. If any of the holders of the identified patents were to assert patent rights against us, the development and sale of leronlimab could be delayed, we could be required to spend time and money defending patent litigation, and we could incur liability for infringement or be enjoined from producing our products if the patent holders prevailed in an infringement suit.

Risks Related to Our Dependence on Third Parties

We have a limited number of internal research and development personnel, making us dependent on consulting relationships and strategic alliances with industry partners.

We have few employees dedicated to quality control and CMC activities. We rely and intend to continue to rely on third parties to supplement many of these critical functions. If we commence additional clinical trials, we will contract

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with third-party, full-service CROs to manage our trials. As a result, we are likely to be dependent on consultants and strategic partners in our development activities, and it may be administratively challenging for us to monitor and coordinate these relationships. If we do not appropriately manage our relationships with third parties, we may not be able to successfully manage development, testing, and preparation of regulatory filings for our product or commercialize any approved product, which would have a material and adverse effect on our business, financial condition and stock price.

We may continue to rely on third parties, such as CROs and third-party manufacturers, to conduct clinical trials for our product candidate, leronlimab, and to produce our pre-clinical and clinical product candidate supplies. Such third parties are subject to significant regulation. A failure by such third parties to perform their obligations properly and successfully to us, or failure of manufacturers on which we rely to meet regulatory requirements, may result in our inability to obtain regulatory approvals for or commercialize our product candidate.

We are dependent on third parties for important aspects of our product development strategy. We do not have the required financial and human resources to independently conduct the pre-clinical and clinical development of our current product candidate. We also do not have the capability or resources to manufacture, store, market or sell our current product candidate. As a result, we contract with and rely on third parties to perform such essential functions. We compete with larger companies for the resources of these third parties. Although we plan to continue to rely on these third parties to conduct any future clinical trials and manufacturing, we are responsible for ensuring that each of our clinical trials is conducted in accordance with its general investigational plan and protocol and adheres to the FDA’s regulations regarding Good Laboratory Practice and that the manufacturing of our product complies with the FDA’s current good manufacturing practices (“cGMP”) enforced through its facilities inspection program. Moreover, we are required to comply with regulations and standards, including good clinical practices, for designing, conducting, monitoring, recording, analyzing, and reporting the results of clinical trials to assure that the data and results are credible and accurate and that the rights, integrity, and confidentiality of trial participants are protected. Our reliance on third parties that we do not control does not relieve us of these responsibilities and requirements. The third parties on whom we rely generally may terminate their engagements with us at any time. If these third parties do not successfully carry out their duties under their agreements with us, if the quality or accuracy of the data they obtain, process, and analyze is compromised for any reason, or if they otherwise fail to comply with clinical trial protocols or meet expected deadlines, future clinical trials that we may undertake may experience delays or may fail to meet regulatory requirements. If our clinical trials do not meet regulatory requirements or if these third parties need to be replaced, our pre-clinical development activities or clinical trials may be extended, delayed, suspended, or terminated. If any of these events occur, or if problems develop in our relationships with third parties, or if such parties fail to perform as expected, we may experience delays or lack of progress, significant cost increases, changes in our strategies, and even failure of our product initiatives, potentially resulting in our inability to obtain regulatory approval of our product candidate and harming our reputation.

Risks Related to Our Intellectual Property Rights

Our success depends upon our ability to obtain and maintain intellectual property protection relating to our product candidate and future product candidates.

Due to evolving legal standards relating to the patentability, validity, and enforceability of patents covering pharmaceutical inventions and the claim scope of patents, our ability to enforce our existing patents and to obtain and enforce patents that may issue from any pending or future patent applications is uncertain and involves complex legal, scientific, and factual questions. To date, no consistent policy has emerged regarding the breadth of claims allowed in biotechnology and pharmaceutical patents. We have pending patents for certain indications for our core product candidate and continue to seek patent coverage for various potential therapeutic applications for leronlimab. However, we cannot be sure that any patents will issue from any pending or future patent applications owned by or licensed to us. Even if patents do issue, we cannot be sure that the claims of these patents will be held valid or enforceable by a court of law, will provide us with any significant protection against competing products, or will afford us a commercial advantage over competitive products. If one or more products resulting from our product candidate is approved for sale by the FDA and we do not have adequate intellectual property protection for those products, competitors could duplicate

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them for approval and sale in the United States without repeating the extensive testing required of us or our partners to obtain FDA approval, once our data exclusivity period has expired.

If we are sued for infringing on third-party intellectual property rights, it will be costly and time-consuming, and an unfavorable outcome would have a significant adverse effect on our business. We may also undertake infringement or other legal proceedings against third parties, causing us to spend resources on litigation and exposing our own intellectual property portfolio to challenge.

Our ability to commercialize our product candidate depends on our ability to use, manufacture, and sell that product without infringing on the patents or other proprietary rights of third parties. Numerous U.S. and foreign issued patents and pending patent applications owned by third parties exist in the monoclonal antibody therapeutic area in which we are developing our product candidate and seeking new potential product candidates. There may be existing patents, unknown to us, on which our activities with our product candidate could infringe.

If a third party claims our actions or products or technologies infringe on its patents or other proprietary rights, we could face a number of issues that could harm our competitive position, including, but not limited to:

If any of these events occur, it could significantly harm our operations and financial condition and negatively affect our stock price. Additionally, although no third party asserted a claim of infringement against us, others may hold proprietary rights that could prevent our product candidate from being marketed. Any patent-related legal action against us claiming damages and seeking to enjoin commercial activities relating to our product candidate or our processes could subject us to potential liability for damages and require us to obtain a license to continue to manufacture or market leronlimab or any other product candidates. We cannot predict whether we would prevail in any such actions or that any license required under any of these patents would be made available on commercially acceptable terms, if at all. Further, we cannot be sure that we could redesign leronlimab or any other product candidates or processes to avoid infringement, if necessary. Accordingly, an adverse determination in a judicial or administrative proceeding, or the failure to obtain necessary licenses, could prevent us from developing and commercializing leronlimab or another product candidate, which could harm our business, financial condition, and operating results.

We may come to believe that third parties are infringing on our patents or other proprietary rights. To prevent infringement or unauthorized use, we may need to file infringement and/or misappropriation suits, which are extremely expensive and time-consuming and would distract management’s attention. Also, in an infringement or misappropriation proceeding, a court may decide that one or more of our patents is invalid, unenforceable, or both, in which case third parties may be able to use our technology without paying license fees or royalties. Even if the validity of our patents is upheld, a court may refuse to stop the other party from using the technology at issue on the ground that the other party’s activities are not covered by our patents.

We may become involved in disputes with our present or future contract partners over intellectual property ownership or other matters, which could have a significant adverse effect on our business.

Inventions discovered in the course of performance of contracts with third parties may become jointly owned by our strategic partners and us, in some cases, and the exclusive property of one of us, in other cases. Under some circumstances, it may be difficult to determine who owns a particular invention or whether it is jointly owned, and

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disputes could arise regarding ownership or use of those inventions. Other disputes may also arise relating to the performance or alleged breach of our agreements with third parties. Any disputes could be costly and time-consuming, and an unfavorable outcome could have a significant adverse effect on our business.

Risks Related to Ownership of Our Common Stock

Our common stock is classified as “penny stock” and trading of our shares may be restricted by the SEC’s penny stock regulations.

Rules 15g-1 through 15g-9 promulgated under the Exchange Act impose sales practice and disclosure requirements on certain brokers-dealers who engage in transactions involving a “penny stock.” The SEC has adopted regulations which generally define “penny stock” to be any equity security that has a market price of less than $5.00 per share or an exercise price of less than $5.00 per share, subject to certain exceptions. Our common stock is covered by the penny stock rules, which impose additional sales practice requirements on broker-dealers who sell to persons other than established customers and “accredited investors.” The penny stock rules require a broker-dealer, prior to a transaction in a penny stock not otherwise exempt from the rules, to deliver a standardized risk disclosure document in a form prepared by the SEC that provides information about penny stocks and the nature and level of risks in the penny stock market. The broker-dealer also must provide the prospective investor with current bid and offer quotations for the penny stock, the compensation of the broker-dealer and its salesperson in the transaction, and monthly account statements showing the market value of each penny stock held in the investor’s account. In addition, the penny stock rules require that, prior to a transaction in a penny stock that is not otherwise exempt, the broker-dealer must make a special written determination that the penny stock is a suitable investment for the purchaser and receive the purchaser’s written agreement to the transaction. These disclosure requirements may have the effect of reducing the level of trading activity in the secondary market for stock that is subject to these penny stock rules. Consequently, these penny stock rules may affect the ability of broker-dealers to trade our securities. We believe that the penny stock rules may discourage investor interest in and limit the marketability of our common stock.

The trading price of our common stock has been and could remain volatile, and the market price of our common stock may decrease.

The market price of our common stock has historically experienced and may continue to experience significant volatility. From June 1, 2024, through June 30, 2025, the market price of our common stock has fluctuated from a high of $0.49 per share to a low of $0.10 per share. The volatile nature of our common share price may cause investment losses for our stockholders. In addition, the market price of stock in small capitalization biotech companies is often driven by investor sentiment, expectation, and perception, all of which may be independent of fundamental, objective, and intrinsic valuation metrics or traditional financial performance metrics, thereby exacerbating volatility. In addition, our common stock is quoted on the OTCQB of the OTC Markets marketplace, which may increase price quotation volatility and could limit liquidity, all of which may adversely affect the market price of our shares.

Since our inception, we have been insolvent and have required debt and equity financing to maintain operations. We expect our debt service obligations and our need for additional funding to finance operations will cause additional dilution to our existing stockholders and could adversely affect the trading price of our common stock.

Since our inception, we have not achieved cash flows from revenues sufficient to cover basic operating costs. As a result, we have relied heavily on debt and equity financing. Equity financing, including securities convertible into equity, in particular has had a dilutive effect on our common stock, which has hampered our ability to attract reasonable financing terms.

The terms of our convertible note financings require us to make periodic debt repayments to reduce the outstanding balance of our debt. As a result, we likely will be required to use a significant portion of our available cash to satisfy our payment obligations, which will reduce the amount of capital available to finance our operations and other business activities. We expect to continue to seek to exchange all or part of our outstanding debt for shares of common stock. If the Company enters into any future exchange offers, they will likely be negotiated at a discount to the market price of

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our common stock and will cause additional dilution to our existing stockholders. If the convertible noteholders sell the common stock they receive in exchange for outstanding debt, this could result in downward pressure on our stock price. In addition, the exercise of our outstanding warrants and stock options for shares of our common stock, which we have encouraged from time to time through public or private warrant exchange offers, including in July 2024, will result in further dilution of our existing common stockholders.

Issuances of additional equity or convertible debt securities will continue to reduce the percentage ownership of our then-existing stockholders. We may also be required to grant potential investors new securities rights, preferences, or privileges senior to those possessed by our then-existing stockholders to induce them to invest in our company. The issuance of these senior securities may adversely affect the holders of our common stock as a result of preferential dividend and liquidation rights over the common stock and dilution of the voting power of the common stock.

As the result of these and other factors, the issuance of additional equity or convertible debt securities may have an adverse impact on the market price of our common stock. For the foreseeable future, we will be required to continue to rely on debt and equity financing to maintain our operations.

Our certificate of incorporation permits our Board to create new series of preferred stock without further approval by our stockholders, which could adversely affect the rights of the holders of our common stock.

Our Board has the authority to fix and determine the relative rights and preferences of preferred stock. Currently, our Board has the authority to designate and issue approximately 4.9 million additional shares of our preferred stock without further stockholder approval. As a result, our Board could authorize the issuance of another series of preferred stock that would grant to holders the preferred right to our assets upon liquidation, the right to receive dividend payments before dividends are distributed to the holders of common stock, and the right to redemption of the shares, together with a premium, prior to the redemption of our common stock. In addition, our Board could authorize the issuance of a series of preferred stock that has greater voting power than our common stock or that is convertible into our common stock, which could decrease the relative voting power of our common stock or result in dilution to our existing stockholders.

Anti-takeover provisions of our certificate of incorporation, our bylaws, and Delaware law could make an acquisition of us, which may be beneficial to our stockholders, more difficult, and may prevent attempts by our stockholders to replace or remove the current members of our Board and management.

Certain provisions of our amended and restated certificate of incorporation and bylaws could discourage, delay or prevent a merger, acquisition, or other change of control that stockholders may consider favorable, including transactions in which stockholders might otherwise receive a premium for shares of common stock. Furthermore, these provisions could frustrate attempts by our stockholders to replace or remove members of our Board. These provisions also could limit the price that investors might be willing to pay in the future for our common stock, thereby depressing the market price of our common stock. Stockholders who wish to participate in these transactions may not have the opportunity to do so. Among other things, these provisions:

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In addition, we are governed by the provisions of Section 203 of the Delaware General Corporation Law (the “DGCL”), which may, unless certain criteria are met, prohibit large stockholders, particularly those owning 15% or more of our voting stock, from merging or combining with us for a prescribed period.

We do not expect to pay cash dividends on our common shares in the foreseeable future.

We have never declared or paid a cash dividend on our common shares, and we do not anticipate declaring or paying dividends on our common shares for the foreseeable future. We expect to use future financing proceeds and earnings, if any, to fund operating expenses. Consequently, common stockholders’ only opportunity to achieve a return on their investment is if the price of our stock appreciates and they sell their shares at a profit. We cannot assure common stockholders of a positive return on their investment when they sell their shares or that stockholders will not lose the entire amount of their investment.

Item 1B. UNRESOLVED STAFF COMMENTS

None.

Item 1C. CYBERSECURITY

We have established processes for assessing, identifying and managing cybersecurity risks, which are built into our information technology function and are designed to safeguard our information assets and operations from internal and external cyber threats, including protecting employee and patient information from unauthorized access to or attacks on our networks and systems. These processes include physical, procedural and technical safeguards, response plans, regular tests on our systems, incident simulations and routine reviews of our policies and procedures to identify risks and enhance our practices. We also employ processes to identify material risks from cybersecurity threats associated with our use of third-party service providers.

We have engaged external parties, including risk management consultants and computer security firms, to enhance our cybersecurity oversight. In an effort to deter and detect cyber threats, we periodically provide training programs to our employees on issues related to privacy and data protection, cybersecurity risks, and the importance of reporting all incidents immediately. Topics include identifying phishing, password protection, securing confidential data, and mobile security. In addition, we use technology-based tools to mitigate cybersecurity risks and to bolster our employee-based cybersecurity programs. We also perform annual vulnerability assessments, conducted by independent, third-party cybersecurity firms.

Additionally, as part of our overall risk mitigation strategy, the Company obtains certain insurance policies. However, such insurance may not be sufficient in type or amount to cover us fully against claims related to security breaches, cyber-attacks and other related breaches.

The Audit Committee of our Board of Directors provides direct cybersecurity risk oversight. Our management provides timely disclosure and related updates to the Audit Committee regarding potential cybersecurity threats, incidents and general risks.

Our management periodically evaluates information provided by consultants on evolving cybersecurity risks and, based on management’s assessment of the processes the Company has put in place, does not believe there are currently any known risks from cybersecurity threats that are reasonably likely to materially affect us or our business strategy, results of operations, or financial condition.

Item 2. PROPERTIES

Our principal office location is 1111 Main Street, Suite 660, Vancouver, Washington 98660. The space is subject to a lease effective through April 30, 2026. We do not own or lease any other properties.

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Item 3. LEGAL PROCEEDINGS

For a description of material legal proceedings, refer to Part II, Item 8, Note 9, Commitments and Contingencies – Legal Proceedings in this Form 10-K.

Item 4. MINE SAFETY DISCLOSURES

Not applicable.

Part II

Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Market Information

Our common stock is quoted on the OTCQB of the OTC Markets marketplace under the trading symbol CYDY. Over-the-counter market quotations reflect inter-dealer prices, without retail mark-up, mark-down, or commission, and may not necessarily represent actual transactions. Historically, trading in our stock has been limited and the trades that occurred cannot be characterized as those in the established public trading market. As a result, the trading prices of our common stock may not reflect the price that would result if our stock was more actively traded.

Holders

The number of record holders of our common stock on June 30, 2025 was approximately 1,000.

Dividends

Holders of our common stock are entitled to receive dividends if declared by our Board. While we have no contractual restrictions or restrictions in our governing documents on our ability to pay dividends, other than the preferential rights provided to the holders of our outstanding preferred stock, we have never paid cash dividends to holders of common stock and do not anticipate paying any in the foreseeable future as we retain earnings, if any, for use in our operations.

Also, under Section 170 of the DGCL, due to the Company’s accumulated deficit of approximately $887.8 million as of May 31, 2025, the Company is not able to pay any dividends, whether in cash, other property, or in shares of capital stock, unless and until the deficiency in the amount of capital represented by the Company’s issued and outstanding preferred stock has been addressed.

Refer to Part II, Item 8, Note 4, Convertible Instruments and Accrued Interest in this Form 10-K for additional information.

Unregistered Sales of Equity Securities

Issuances of Shares in Convertible Note Exchange Transactions

In April through July 2025, the Company and the holder of its April 23, 2021 Note, in partial satisfaction of the holder’s redemption rights, entered into exchange agreements pursuant to which portions of the original note was partitioned into new notes with an aggregate principal amount of $3.0 million. The new note was exchanged concurrently with issuance of a total of approximately 10.4 million shares of common stock. The Company relied on the exemption provided by Section 3(a)(9) of the Securities Act in connection with the exchange transactions.

Item 6. [Reserved]

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following discussion and analysis of our financial condition and results of operations should be read in conjunction with the other sections of this Form 10-K, including our consolidated financial statements and related notes set forth in Part II, Item 8. This discussion and analysis contains forward-looking statements, including information about possible or assumed results of our operations, our performance, financial condition, plans, and objectives, that

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involve risks, uncertainties, and assumptions. The actual results may differ materially from those anticipated and set forth in such forward-looking statements. See Forward-Looking Statements preceding Part I and Item 1A, Risk Factors in this Form 10-K.

Overview

The Company is a clinical stage biotechnology company focused on the clinical development and potential commercialization of its product candidate, leronlimab, which is being studied for its potential in solid-tumor oncology.

Our current business strategy is the clinical development of leronlimab, which may include the following:

We may need significant additional funding to execute the above business strategy in full, which may include conducting a variety of additional pre-clinical studies and clinical trials, in furtherance of our efforts to obtain FDA approval to commercialize leronlimab. In addition to traditional fundraising, the Company will pursue non-dilutive financing opportunities, such as license agreements and co-development or strategic partnerships, to help implement its strategy.

Fiscal 2025 Overview

Actions taken by the Company during fiscal 2025 included:

● Revamping our clinical strategy to focus on solid-tumor oncology;

● Hiring of Robert E. Hoffman as Chief Financial Officer;

● Furthering the development of a long-acting modified therapeutic; and

Leronlimab and Colorectal Cancer (“CRC”)

In August 2024, the Company completed a meeting with the U.S. Food and Drug Administration (FDA) to gain alignment on the rationale and proposed dosing for a Phase II study investigating the preliminary safety and activity of leronlimab in combination with trifluridine plus tipiracil (TAS-102) and bevacizumab in participants with CCR5+, microsatellite stable (“MSS”), relapsed or refractory metastatic colorectal cancer (mCRC).

In October 2024, the Company engaged Syneos Health as the contract research organization (“CRO”) for its Phase II trial, which will evaluate the efficacy of leronlimab in patients with relapsed/refractory micro-satellite stable colorectal cancer (“CRC”).Syneos Health is a leading fully integrated biopharmaceutical solutions organization that supports customers in accelerating the delivery of life-saving therapies to market. Syneos Health leverages advanced data analytics and AI/ML capabilities to improve outcomes at every stage of the asset lifecycle, from clinical development to commercialization.

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In November 2024, the Company received clearance from the US Food and Drug Administration (“FDA”) to commence its Phase II CRC trial, evaluating the efficacy of leronlimab in patients with relapsed/refractory microsatellite stable colorectal cancer.This milestone reflected the continued positive development of the Company’s improved relationship with the FDA.

In December 2024, the Company announced that Dr. Ben Weinberg from Georgetown University and the MedStar Health Alliance had agreed to be the lead Principal Investigator for the CRC study. As requested by FDA, the first five patients enrolled in this study will receive 350 mg of leronlimab SQ once/week in combination with TAS-102 and Bevacizumab. After a preliminary safety review, subsequent patients will then be randomized to 350 or 700 mg of weekly leronlimab with the same background regimen. The Data and Safety Monitoring Board (DSMB) will perform a second safety review after the first 20 patients have completed at least 1 cycle of therapy. The DSMB could then recommend restricting further enrollment to a single dose level, should they identify a signal of superior activity in either one of the treatment arms.

In June 2025, the Company announced that the first patient has been dosed in its Phase II trial evaluating the efficacy of leronlimab in patients with relapsed/refractory microsatellite stable colorectal cancer (“CRC”), and that patient enrollment and opening additional clinical sites was underway through Syneos Health.

In July 2025, the Company announced encouraging historical clinical findings among patients with advanced mCRC, previously treated with leronlimab. The final results indicated that three of five patients treated with leronlimab had at least a partial response, as measured by radiologic criteria, including one patient with a complete response who remains alive five years later.The results, from patients treated under a prior compassionate use protocol, reiterate a favorable safety profile of leronlimab as well as its potential for clinical benefit in patients with mCRC. The results also support the rationale for the design and therapeutic potential of the Phase II CRC trial.

As of July 25, 2025, nine clinical sites had been approved to participate in the Phase II CRC trial, and two patients had received at least one dose in the trial. For additional information, the CRC trial protocol is posted on the NCI Clinical Trials website, and can be viewed here: https://clinicaltrials.gov/study/NCT06699836?cond=colorectal%20cancer&intr=leronlimab&rank=1

Leronlimab and Metastatic Triple-Negative Breast Cancer (“mTNBC”)

In February and March 2025, the Company announced encouraging survival outcomes among a group of patients with mTNBC treated with leronlimab in the Company’s 2019 trial(s). Although mTNBC patients typically have a poor prognosis, observed survival rates at 12, 24, 36, and 48 months after treatment with leronlimab compare favorably with reported life expectancy after treatment with currently approved therapies. In addition, the Company confirmed that a small group of patients who failed treatment after developing metastatic disease survived more than 48 months after receiving leronlimab, are alive today, and currently identify as having no evidence of ongoing disease.

In May 2025, the Company announced new data suggesting a novel mechanism of action of leronlimab for the treatment of solid tumors.The Company analyzed data from its prior clinical trials of patients with mTNBC and found that leronlimab treatment correlated with increased expression of an immune cell protein or “checkpoint inhibitor” known as programmed death-ligand 1 (“PD-L1”) on patient’s circulating tumor cells (“CTCs”). The results indicated that 15 of 17 (88%) of patients who received a weekly dose of 525 mg or higher experienced a significant increase in PD-L1 expression on their CTCs over a 30-to-90-day period after starting leronlimab. Increasing expression of PD-L1 can be likened to turning “cold” tumors “hot”, elevating PD-L1 levels to the level necessary for patients to potentially derive benefit from further treatment with a class of drugs known as immune checkpoint inhibitors (“ICIs”).The Company also confirmed that all five patients (100%) who demonstrated a significant increase in PD-L1 expression after receiving leronlimab and received treatment with any ICI remain alive today.

The Company is currently in the process of resuming its clinical development in mTNBC, with the intention to prospectively confirm the retrospective observations in mTNBC outlined above. In early 2025, the Company announced several preclinical studies in TNBC intended to identify treatment strategies to optimize the design of a future Phase II

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study, and to further examine the apparent mechanism behind the observed increase in survival as compared to existing treatment paths. In the interim, ongoing discussions with KOLs are being conducted towards initiating a study in patients with mTNBC on an abbreviated timeline.

Pre-Clinical Development of Long-Acting CCR5 Antagonist

The Company has an active and ongoing joint development agreement with a third-party company with generative AI drug discovery and development tools in an effort to develop one or more longer-acting molecules. The Company believes this collaboration will result in the expedited development of a modified, longer-acting therapeutic, and could lead to greater acceptance by patients due to the requirement for less frequent injections. The services provided by the third party may yield extended intellectual property protection, thereby increasing the value of the Company’s patent portfolio.

If successful, such a modified therapeutic would require less frequent injections for patients on drug, furthering the convenience and overall marketability of the product. Working with a company with established AI-capabilities allows for a robust development path for this modified, longer-acting therapeutic for the Company. This joint development initiative remains in progress at this time and the Company will provide further updates when appropriate.

Additional information regarding corporate and clinical developments is included in Part I, Item 1, Business in this Form 10-K.

Results of operations for the fiscal years ended May 31, 2025, and 2024

Fluctuations in Operating Results

The Company’s operating results may fluctuate significantly depending on the outcomes, number and timing of pre-clinical and clinical studies, patient enrollment and/or completion rates in the studies, and their related effect on research and development expenses, regulatory and compliance activities, activities related to seeking FDA approval of our drug product, general and administrative expenses, professional fees, and legal and regulatory proceedings and related consequences. We require a significant amount of capital to continue to operate; therefore, we regularly conduct financing offerings to raise capital, which may result in various forms of non-cash interest expense or other expenses. Additionally, we periodically seek to negotiate settlement of debt payment obligations in exchange for equity securities of the Company and enter into warrant exchanges or modifications that may result in non-cash charges. Our ability to continue to fund operations will depend on our ability to raise additional funds. Refer to Risk Factors, Liquidity and Capital Resources, and Going Concern sections included in this report.

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The results of operations were as follows for the periods presented:

Years ended, May 31 Change

(in thousands, except for per share data) 2025 2024 $ %

Operating expenses:

Interest and other income (expense):

Interest on convertible notes (4,424) (4,659) 235 5

Amortization of discount on convertible notes (407) (1,076) 669 62

Amortization of debt issuance costs — (572) 572 100

Gain on restructuring of payables 407 — 407 100

Income tax benefit — — — —

Income (loss) per share:

General and administrative expenses

G&A expenses consisted of the following:

Years ended, May 31 Change

Salaries, benefits, and other compensation $ 1,554 $ 2,507 $ (953) (38)

The decrease in G&A expenses for the fiscal year ended May 31, 2025, compared to the prior fiscal year, was primarily due to a reduction in stock-based compensation and salaries, benefits and other compensation due to classifying clinical employees’ compensation as a research and development expense in the current fiscal year.

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Research and development expenses

R&D expenses consisted of the following:

Years ended, May 31 Change

Return of clinical expenses (24,985) — (24,985) —

The decrease in R&D expenses in the fiscal year ended May 31, 2025, compared to the prior fiscal year, was primarily due to a return of clinical expenses related to the settlement of the Company’s litigation with Amarex in July 2024. Refer to Note 9, Commitments and Contingencies – Legal Proceedings – Settlement of Amarex Dispute for further information.

The future trend of our R&D expenses is dependent on the costs of any future clinical trials and our decisions regarding which indications on which to focus our future efforts toward the development and study of leronlimab, which may include pre-clinical and clinical studies for oncology and inflammation, as well as efforts to develop a long-acting new or modified therapeutic, the timing and outcomes of such efforts, and the timing of the final close-out of closed studies.

Interest and other expense

Interest and other expenses consisted of the following:

Years ended, May 31 Change

Interest on convertible notes $ (4,424) $ (4,659) $ 235 5 %

Amortization of discount on convertible notes (407) (1,076) 669 62

Amortization of debt issuance costs — (572) 572 100

Gain on restructuring of payables 407 — 407 100

The decrease in interest and other expenses for the fiscal year ended May 31, 2025, compared with the prior fiscal year, was primarily due to the decreases in loss on induced conversion, loss on note extinguishment and finance charges. The decrease in loss on induced conversion is due to recent note payments classified as gains on restructuring of payables. The decrease in loss on note extinguishment is due to note extinguishments occurring in the prior period. The decrease in finance charges is due to restructuring the balance due to Samsung, which removed any future interest.

Refer to Part II, Item 8, Note 4, Convertible Instruments and Accrued Interest and Note 13, Subsequent Events in this report for additional information.

Liquidity and Capital Resources

As of May 31, 2025, we had a total of approximately $11.9 million in cash and cash equivalents, and approximately $70.5 million in short-term liabilities consisting primarily of approximately $45.4 million representing the principal of and accrued interest on convertible notes payable, net of unamortized debt discount, and approximately $16.9 million in accounts payable and accrued liabilities and compensation. We will continue to incur operating losses and the Company

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will require a significant amount of additional capital in the future as we continue to seek approval to commercialize leronlimab. Despite the Company’s negative working capital position, vendor relations remain relatively accommodative given liquidity constraints. We cannot be certain, however, that future funding will be available to us when needed on terms that are acceptable to us, or at all. We sell securities and incur debt when the terms of such agreements are deemed favorable to both parties under then current circumstances and as necessary to fund our current and projected cash needs.

Cash and Cash equivalents

The Company’s cash and cash equivalents position of approximately $11.9 million and zero restricted cash, respectively, on May 31, 2025, increased by approximately $8.8 million and decreased by $6.7 million, respectively, compared to the cash balance of approximately $3.1 million and restricted cash balance of approximately $6.7 million on May 31, 2024.

Summary of cash flows and changes between the periods presented is as follows:

Years ended, May 31 Change

Net cash provided by (used in):

Net cash used in operating activities $ (8,765) $ (10,982) $ 2,217

Net cash provided by financing activities $ 10,854 $ 11,748 $ (894)

Cash used in operating activities

Net cash used in operating activities totaled approximately $8.8 million during the fiscal year ended May 31, 2025, representing an improvement of approximately $2.2 million compared to the prior year. The increase in the net amount of cash provided by operating activities was due primarily to a legal settlement of approximately $10.0 million, offset by additional clinical research payments. Refer to Note 9, Commitments and Contingencies – Legal Proceedings – Settlement of Amarex Dispute for further information.

Cash provided by financing activities

Net cash provided by financing activities totaled approximately $10.9 million, a decrease of approximately $0.9 million compared to the prior year. The decrease in net cash provided was primarily the result of raising less funds from private placements of common stock and warrants, offset by an increase in funds raised from warrant exchange transactions.

Convertible debt

April 2, 2021 Convertible Note

On April 2, 2021, we issued a convertible note with a principal amount of $28.5 million resulting in net cash proceeds of $25.0 million, after $3.4 million of debt discount and $0.1 million of offering costs. The note as amended in April 2025 accrues interest daily at a rate of 6% per annum, has a stated conversion price of $10.00 per share, and matures in April 2026. As of May 31, 2025, the outstanding balance of the April 2, 2021 Note, including accrued interest, was approximately $8.2 million.

April 23, 2021 Convertible Note

On April 23, 2021, we issued a convertible note with a principal amount of $28.5 million resulting in net cash proceeds of $25.0 million, after $3.4 million of debt discount and $0.1 million of offering costs. The note as amended in April 2025 accrues interest daily at a rate of 6% per annum, has a stated conversion price of $10.00 per share, and matures in April 2026. As of May 31, 2025, the outstanding balance of the April 23, 2021 Note, including accrued interest, was approximately $37.1 million.

Refer to Part II, Item 8, Note 4, Convertible Instruments and Accrued Interest and Note 13, Subsequent Events in this report for additional information.

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Common stock

We have 1,750.0 million authorized shares of common stock. The table below summarizes intended uses of common stock.

As of

Issuable upon:

Warrant exercises 213.1

Convertible preferred stock and undeclared dividends conversion 40.0

Outstanding stock option exercises or vesting of outstanding RSUs 41.8

Reserved and issuable upon conversion of outstanding convertible notes 12.0

Total shares reserved for future uses 313.1

Common stock outstanding 1,249.2

As a result, as of May 31, 2025, we had approximately 187.7 million unreserved authorized shares of common stock available for issuance. Our ability to continue to fund our operations depends on our ability to raise capital. The funding necessary for our operations may not be available on acceptable terms, or at all. If we deplete our cash reserves, we may have to discontinue our operations and liquidate our assets. In extreme cases, we could be forced to file for bankruptcy protection, discontinue operations or liquidate assets.

Refer to Part II, Item 8, Note 13, Subsequent Events in this report for additional information.

Off-Balance Sheet Arrangements

As of May 31, 2025, we did not have any off-balance sheet arrangements that have, or are reasonably likely to have, a material effect on our current or future financial condition, results of operations, liquidity, capital expenditures, or capital resources.

Contractual Obligations

Refer to Note 4, Convertible Instruments and Accrued Interest, Note 9, Commitments and Contingencies and Note 13, Subsequent Events included in Part II, Item 8 of this Form 10-K.

Legal Proceedings

The Company is a party to various legal proceedings described in Part II, Item 8, Note 9, Commitments and Contingencies - Legal Proceedings of this Form 10-K. The Company recognizes accruals for such proceedings to the extent a loss is determined to be both probable and reasonably estimable. The best estimate of a loss within a possible range is accrued; however, if no estimate in the range is more probable than another, then the minimum amount in the range is accrued. If it is determined that a material loss is not probable but reasonably possible and the loss or range of loss can be estimated, the possible loss is disclosed.

It is not possible to determine the outcome of these proceedings, including the defense and other litigation-related costs and expenses that may be incurred by the Company, as the outcomes of legal proceedings are inherently uncertain, and the outcomes could differ significantly from recognized accruals. Therefore, it is possible that the ultimate outcome of any proceeding, if in excess of a recognized accrual, or if no accrual has been made, could be material to the Company’s consolidated financial statements. Refer to Note 9, Commitments and Contingencies – Legal Proceedings for further discussion of legal proceedings.

Going Concern

The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities in the normal course of business. Net income of $3.7 million for the fiscal year ended May 31, 2025 resulted from the recovery of approximately $25.0 million in clinical expenses due to the settlement of the Company’s litigation with Amarex, which is a non-recurring event. The Company had an accumulated deficit of $887.8 million as of May 31, 2025. These factors, among several others, raise substantial doubt about our ability to continue as a going concern. The consolidated financial statements do not include any

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adjustments relating to the recoverability and classification of assets and liabilities that might be necessary should the Company be unable to continue as a going concern.

The Company had no activities that produced revenue in the periods presented and had operating losses since inception. The Company’s continuation as a going concern is dependent upon its ability to obtain a significant amount of additional operating capital to continue to fund operations and pay its liabilities and commitments, to pursue its research into multiple indications for and development of its product candidate, to obtain FDA approval of its product candidate for use in treating one or more indications, to outsource manufacturing of its product, and ultimately to attain profitability. We intend to seek additional funding through equity or debt offerings, licensing agreements, supply and distribution agreements, and strategic alliances to implement our business strategies. There are no assurances, however, that we will be successful in these endeavors. If we are not able to raise capital on a timely basis on favorable terms, if at all, we may need to significantly change or scale back operations, including pursuing other development and commercialization initiatives and obtaining adequate funding to cover the costs of the legal proceedings in which we are involved, all of which individually or in combination could materially impede our ability to achieve profitability. The Company’s failure to raise additional capital could also affect our relationships with key vendors and disrupt our ability to timely execute our business plan. In extreme cases, the Company could be forced to file for bankruptcy protection, discontinue operations, or liquidate assets.

Since inception, the Company has financed its activities principally from the public and private sale of equity securities, as well as with proceeds from issuance of convertible notes and related party notes payable. The Company intends to finance its future development activities and its working capital needs primarily from the sale of equity and debt securities. As of June 30, 2025, the Company had approximately 172.8 million shares of common stock authorized for issuance under its certificate of incorporation, as amended, and available for future uses. The sale of equity and convertible debt securities to raise additional capital is likely to result in dilution to stockholders and those securities may have rights senior to the common stock. If the Company raises funds through the issuance of additional preferred stock, convertible debt securities, or other debt or equity financing, the related transaction documents could contain covenants restricting its operations.

In April 2021, the Company entered into long-term convertible notes that are secured by all of our assets (excluding our intellectual property), and include certain restrictive provisions, including limitations on incurring additional indebtedness and future dilutive issuances of securities, any of which could impair our ability to raise additional capital on acceptable terms. Future third-party funding arrangements may also require the Company to relinquish valuable rights. Additional capital, if available, may not be available on reasonable or non-dilutive terms.

Refer to Part I, Item 1A, Risk Factors of this Form 10-K for additional information.

New Accounting Pronouncements

Refer to Part II, Item 8, Note 2, Summary of Significant Accounting Policies – Recent Accounting Pronouncements in this Form 10-K.

Critical Accounting Estimates

We prepare our consolidated financial statements in accordance with U.S. generally accepted accounting principles, which require our management to make estimates that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the balance sheet dates, as well as the reported amounts of revenues and expenses during the reporting periods. To the extent that there are material differences between these estimates and actual results, our financial condition or results of operations would be affected. We base our estimates on our own historical experience and other assumptions that we believe are reasonable after taking account of our circumstances and expectations for the future based on available information. We evaluate these estimates on an ongoing basis.

We consider an accounting estimate to be critical if: (i) the accounting estimate requires us to make assumptions about matters that were highly uncertain at the time the accounting estimate was made, and (ii) changes in the estimate that are reasonably likely to occur from period to period or use of different estimates that we reasonably could have used in the current period, would have a material impact on our financial condition or results of operations. There are items within our financial statements that require estimation but are not deemed critical, as defined above.

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For a detailed discussion of our significant accounting policies and related judgments and estimates used in preparation of the consolidated financial statements, accounting policies and related judgments, see Part II, Item 8, Note 2, Summary of Significant Accounting Policies, in this Form 10-K.

Item 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Interest Rate Risk

We are exposed to market risks in the ordinary course of business. Our primary exposure to market risk is sensitivity to changes in interest rates. We hold our cash in interest-bearing money market accounts; due to the short-term maturities of such financial instruments, a 100 basis point change in interest rates would not have a material effect on the fair market value of our cash. As of May 31, 2025, we had $11.9 million in cash and cash equivalents.

Common Stock Price Volatility

The Compensation Committee of the Board of Directors has historically granted stock incentive awards to management and employees in the form of stock options. Stock-based compensation expense is recognized for stock options over the requisite service period using the fair value of these grants as estimated at the awards grant date using the Black-Scholes pricing model and the market value of our publicly traded common stock on the date of grant. In addition to the market value of our common stock, one of the inputs into this model that significantly impacts the fair value of the options is the expected volatility of our common stock over the estimated life of the option. We estimate expected volatility by using the most recent historical experience. Since November 2019, our common stock has experienced periods of high trading volatility. Grants of stock options during the fiscal year ended May 31, 2025, continued to reflect expected volatility as part of the estimated fair value of stock options. Additionally, we negotiate the settlement of debt payment obligations in exchange for equity securities of the Company, which can create a non-cash charge upon extinguishment of debt as the price of our common stock fluctuates. If we continue to enter into these settlements, the increased levels of volatility in our common stock trading price will result in increased dilution and extinguishment gains or losses.

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Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

CYTODYN INC.

CONTENTS PAGE

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS 55

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Stockholders and Board of Directors of

CytoDyn Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheet of CytoDyn Inc. (the “Company”) as of May 31, 2025, the related consolidated statements of operations, changes in stockholders’ deficit and cash flows for the year ended May 31, 2025, and the related notes (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of May 31,2025, and the results of its operations and its cash flows for the year ended May 31, 2025, in conformity with accounting principles generally accepted in the United States of America.

Explanatory Paragraph – Going Concern

The accompanying consolidated financial statements have been prepared assuming that the Company will continue as a going concern. As more fully described in Note 2, the Company has a significant working capital deficiency, has incurred significant losses and needs to raise additional funds to meet its obligations and sustain its operations. These conditions raise substantial doubt about the Company's ability to continue as a going concern. Management's plans in regard to these matters are also described in Note 2. The consolidated financial statements do not include any adjustments that might result from the outcome of this uncertainty.

Basis for Opinion

These financial statements are the responsibility of the Company's management. Our responsibility is to express an opinion on the Company's financial statements based on our audit. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Company is not required to have, nor were we engaged to perform, an audit of its internal control over financial reporting. As part of our audit we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Company's internal control over financial reporting. Accordingly, we express no such opinion.

Our audit included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audit also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audit provides a reasonable basis for our opinion.

Prior Period Financial Statements

The financial statements of the Company as of and for the year ended May 31, 2024, were audited by Marcum LLP, whose report dated August 15, 2024, expressed an unmodified opinion on those statements, including an emphasis of matter paragraph assuming the Company will continue as a going concern.

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Critical Audit Matters

Critical audit matters are matters arising from the current period audit of the financial statements that were communicated or required to be communicated to the audit committee and that: (1) relate to accounts or disclosures that are material to the financial statements and (2) involved our especially challenging, subjective, or complex judgments. We determined that there are no critical audit matters.

/s/ CBIZ CPAs P.C.

We have served as the Company’s auditor since 2024.

Hartford, CT

July 25, 2025

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REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Shareholders and Board of Directors of

CytoDyn, Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheet of CytoDyn, Inc. (the “Company”) as of May 31, 2024, the related consolidated statements of operations, changes in stockholders’ deficit and cash flows for the year ended May 31, 2024, and the related notes(collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of May 31, 2024, and the results of its operations and its cash flows for the year ended May 31, 2024, in conformity with accounting principles generally accepted in the United States of America.

Explanatory Paragraph – Going Concern

Basis for Opinion

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Critical Audit Matters

/s/ Marcum llp

We have served as the Company’s auditor since 2024.

Hartford, CT

August 15, 2024

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CytoDyn Inc.

Consolidated Balance Sheets

(In thousands, except par value)

Assets

Current assets:

Cash and cash equivalents $ 11,903 $ 3,110

Restricted cash — 6,704

Other receivables (Note 9) 2,000 —

Other non-current assets 169 321

Liabilities and Stockholders’ Deficit

Current liabilities:

Accrued liabilities and compensation 2,206 2,810

Accrued interest on convertible notes 18,151 15,227

Accrued dividends on convertible preferred stock 8,269 6,791

Operating leases — 141

Commitments and Contingencies (Note 9)

Stockholders’ deficit:

Preferred stock, $0.001 par value; 5,000 shares authorized:

Total liabilities and stockholders' deficit $ 18,047 $ 11,136

See accompanying notes to consolidated financial statements.

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CytoDyn Inc.

Consolidated Statements of Operations

(In thousands, except per share amounts)

Years ended May 31,

Operating expenses:

Interest and other income (expense):

Interest on convertible notes (4,424) (4,659)

Amortization of discount on convertible notes (407) (1,076)

Amortization of debt issuance costs — (572)

Loss on induced conversion (1,180) (6,680)

Finance charges (25) (2,584)

Loss on note extinguishment — (13,374)

Gain on restructuring of payables 407 —

Loss on derivatives (852) (236)

Total interest and other income (expense) (5,916) (31,783)

Gain (loss) before income taxes 3,745 (49,841)

Income tax benefit — —

Income (loss) per share:

See accompanying notes to consolidated financial statements.

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CytoDyn Inc.

Consolidated Statements of Stockholders’ Deficit

(In thousands)

Note Conversion — — 24,410 24 — — 7,126 — 7,150

Warrant exercises — — 3,000 3 — — 297 — 300

Stock-based compensation — — — — — — 1,925 — 1,925

Stock option exercises — — 500 1 — — 105 — 106

Stock adjustment — — (651) (1) (157) — 1 — —

Warrant exercises — — 12,238 12 — — 1,069 — 1,081

Stock-based compensation — — — — — — 1,512 — 1,512

See accompanying notes to consolidated financial statements.

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CytoDyn Inc.

Consolidated Statements of Cash Flows

(In thousands)

Years ended May 31,

Cash flows from operating activities:

Amortization of debt issuance costs — 572

Amortization of discount on convertible notes 407 1,076

Gain on restructuring of payables (407) —

Loss on derivatives 852 236

Loss on induced conversion 1,180 6,680

Loss on note extinguishment — 13,374

Changes in operating assets and liabilities:

Prepaid expenses and other assets (4,840) 893

Accounts payable, accrued expenses, and other liabilities (11,332) 10,765

Net cash used in operating activities (8,765) (10,982)

Cash flows from investing activities:

Net cash provided by/used in investing activities — —

Cash flows from financing activities:

Proceeds from warrant transactions, net of offering costs 10,377 —

Proceeds from sale of common stock and warrants, net of issuance costs — 9,137

Proceeds from warrant exercises 1,081 300

Proceeds from exercise of stock options 106 —

Proceeds held in trust — 300

Cash paid for note payable (710) —

Net cash provided by financing activities 10,854 11,748

Net change in cash and restricted cash 2,089 766

Cash, cash equivalents, and restricted cash at beginning of period 9,814 9,048

Cash, cash equivalents, and restricted cash at end of period $ 11,903 $ 9,814

Restricted cash — 6,704

Total cash, cash equivalents, and restricted cash $ 11,903 $ 9,814

Supplemental disclosure:

Cash paid for interest $ 25 $ 45

Non-cash investing and financing transactions:

Derivative liability associated with warrants $ — $ 102

Issuance of common stock for principal of convertible notes $ 4,500 $ 5,250

Cashless exercise of warrants $ 2 $ —

Warrants issued to placement agent $ — $ 1,783

Note conversion to common stock and warrants $ — $ 3,302

See accompanying notes to consolidated financial statements.

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CYTODYN INC.

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

AS OF MAY 31, 2025

Note 1. Organization

CytoDyn Inc. (together with its wholly owned subsidiary, the “Company”) was originally incorporated under the laws of Colorado on May 2, 2002, under the name RexRay Corporation and, effective August 27, 2015, reincorporated under the laws of Delaware. The Company is a clinical-stage biotechnology company focused on the clinical development of innovative treatments for multiple therapeutic indications based on its product candidate, leronlimab, a novel humanized monoclonal antibody targeting the CCR5 receptor.

The Company is currently working to further establish leronlimab via clinical development of its viability in solid-tumor oncology, and several other potential exploratory indications. Historically, the Company has investigated leronlimab as a viral entry inhibitor for treatment of HIV, believed to competitively bind to the N-terminus and second extracellular loop of the CCR5 receptor. For immunology, the CCR5 receptor is believed to be implicated in immune-mediated illnesses. Leronlimab is being or has been studied in solid tumors in oncology, as well as other indications where CCR5 is believed to play an integral role in the pathogenesis of disease.

Note 2. Summary of Significant Accounting Policies

Principles of Consolidation

The consolidated financial statements include the accounts of CytoDyn Inc. and its wholly owned subsidiary, CytoDyn Operations Inc. Intercompany transactions and balances are eliminated in consolidation.

Reclassifications

During the year ended May 31, 2025, the Company modified the consolidated statements of income to include depreciation expense as part of general and administrative expense. Previously, depreciation expense was presented as a separate line item. In addition, we modified the prior period interest income line item to conform to the current period presentation.

Going Concern

The accompanying consolidated financial statements have been prepared on a going concern basis, which contemplates realization of assets and satisfaction of liabilities in the normal course of business. As presented in the accompanying consolidated financial statements, the Company had losses for all periods presented, except for the year ended May 31, 2025. The Company had an accumulated deficit of approximately $887.8 million as of May 31, 2025. These factors, among others, including the various matters discussed in Note 9, Commitments and Contingencies, raise substantial doubt about the Company’s ability to continue as a going concern. The consolidated financial statements do not include any adjustments relating to the recoverability of assets and classification of liabilities that might be necessary should the Company be unable to continue as a going concern.

The Company’s continuance as a going concern is dependent upon its ability to obtain additional operating capital, complete the development of its product candidate, leronlimab, obtain approval to commercialize leronlimab from regulatory agencies, continue to outsource manufacturing of leronlimab, and ultimately generate revenues and attain profitability. The Company plans to continue to engage in research and development activities related to leronlimab and a new or modified longer-acting therapeutic for multiple indications and expects to incur significant research and development expenses in the future, primarily related to its regulatory compliance, including performing additional pre-clinical and clinical studies in various indications, and seeking regulatory approval for its product candidate for commercialization. These research and development activities are subject to significant risks and uncertainties. The Company intends to finance its future development activities and its working capital needs primarily from the sale of equity and debt securities, combined with additional funding from other sources. However, there can be no assurance that the Company will be successful in these endeavors.

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Use of Estimates

The preparation of the consolidated financial statements in accordance with accounting principles generally accepted in the United States (“U.S. GAAP” or “GAAP”) requires management to make estimates and judgments that affect the reported amounts of assets, liabilities, and the disclosure of contingent assets and liabilities at the date of consolidated financial statements, and the reported amounts of revenue and expenses during the reporting period. Estimates are assessed each period and updated to reflect current information, such as the status of our analysis of the results of our clinical trials and/or discussions with the FDA, which could have an impact on the Company’s significant accounting estimates and assumptions. The Company’s estimates are based on historical experience and on various other assumptions that are believed to be reasonable under the circumstances. Significant estimates include, but are not limited to, those relating to stock-based compensation, the assumptions used to value warrants and warrant modifications. Actual results could differ from these estimates.

Cash and Cash Equivalents

Cash and cash equivalents are short-term, highly liquid investments with original maturities of three months or less when purchased and comprise bank deposits and money market funds. Our investments in money market funds are measured at fair value on a recurring basis and are classified within Level 1 of the fair value hierarchy because they are valued using quoted market prices. The value of the money market fund as of May 31, 2025, was approximately $11.4 million. The Company did not have a money market fund balance as of May 31, 2024.

Cash is maintained at federally insured financial institutions and, at times, balances may exceed federally insured limits. The Company has never experienced any losses related to cash balances. Balances in excess of federally insured limits were approximately $11.7 million of the cash balance at May 31, 2025. Balances in excess of federally insured limits were approximately $2.9 million of the cash balance and approximately $6.7 million of the restricted cash balance at May 31, 2024.

Restricted Cash

As of May 31, 2025, the Company had no restricted cash. The $6.7 million restricted cash balance as of May 31, 2024 was related to cash that was being held as collateral as required in the Amarex litigation and was released in full on July 2, 2024, as part of the settlement agreement.

Research and Development

Research and development expenses include (i) employee-related expenses, including salaries, benefits, stock-based compensation expense and travel; (ii) external research and development expenses incurred under arrangements with third parties, such as contract research organization agreements and consultants; (iii) the cost of acquiring, developing and manufacturing clinical study materials; (iv) costs associated with preclinical and clinical activities and regulatory operations; and (v) costs incurred in development of intellectual property. Costs incurred in connection with research and development activities are expensed as incurred.

Clinical trial costs incurred through third parties are expensed commensurate with the contracted work performed. Contingent milestone payments that are due to third parties under research and development collaboration arrangements or other contractual agreements are expensed when the milestone conditions are probable and the payment amount is reasonably estimable. See Note 9, Commitments and Contingencies for additional discussion.

Fair Value of Financial Instruments

The Company’s financial instruments consist primarily of cash, accounts payable and accrued liabilities, and debt. As of May 31, 2025, the carrying value of the Company’s assets and liabilities approximate their fair value due to the short-term maturity of the instruments. Debt is reported at amortized cost in the consolidated balance sheets which approximate fair value. The remaining financial instruments are reported in the consolidated balance sheets at amounts that approximate current fair values. The fair value hierarchy specifies three levels of inputs that may be used to measure fair value as follows:

• Level 1. Quoted prices in active markets for identical assets or liabilities.

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In accordance with the prescribed accounting guidance, the Company measured the fair value of money market funds and derivatives using the fair value hierarchy during the fiscal year ended May 31, 2025.

Leases

Operating lease right-of-use (“ROU”) assets are included in other non-current assets and the current portion of operating lease liabilities are included in accrued liabilities and compensation on the consolidated balance sheets. The long-term operating lease liabilities are presented separately as operating leases on the consolidated balance sheets. Lease ROU assets and liabilities are recognized based on the present value of the future minimum lease payments over the lease term at commencement date. As the Company’s leases do not provide an implicit rate, the Company uses its incremental borrowing rate based on the information available at commencement date in determining the present value of future payments. The operating lease ROU asset also includes any lease payments made and excludes lease incentives and initial direct costs incurred. The Company’s lease terms do not include options to extend or terminate the lease as it is not reasonably certain that it would exercise these options. Lease expense for minimum lease payments is recognized on a straight-line basis over the lease term.

Stock-Based Compensation

U.S. GAAP requires companies to measure the cost of services received in exchange for the award of equity instruments based on their fair value at the date of grant. The related expense is recognized over the period during which services are expected to be performed in exchange for the award (requisite service period), when designated milestones have been achieved or when pre-defined performance conditions are met.

The Company values its stock-based awards using the Black-Scholes option pricing model utilizing assumptions that include stock price volatility, expected term of the award, and risk-free interest rates. The Company estimates forfeitures at the time of grant and makes revisions in subsequent periods, if necessary, if actual forfeitures differ from those estimates. The Company estimated future unvested forfeitures at zero for all periods presented.

Debt

The Company issued promissory notes at a discount and incurred direct debt issuance costs. Debt discount and issuance costs are netted against the debt and amortized over the life of the promissory note.

Warrants

The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance included in ASC 480, Distinguishing Liabilities from Equity and ASC 815, Derivatives and Hedging. The assessment considers whether the warrants are freestanding financial instruments pursuant to ASC 480, whether the warrants meet the definition of a liability pursuant to ASC 480, and whether the warrants meet all of the requirements for equity classification under ASC 815. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequentquarterly period end date while the warrants are outstanding. Warrants that meet all of the criteria for equity classification are required to be recorded as a component of additional paid-in capital at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance and remeasured each balance sheet date thereafter.

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Offering Costs

The Company periodically incurs direct incremental costs associated with the sale of shares of common stock and warrants to purchase shares of common stock; refer to Note 5, Private Placements of Common Stock and Warrants for additional information. The costs are recorded as a component of equity upon receipt of the proceeds if the security is classified as equity when the sale occurs or expensed as issuance costs if the security is classified as a liability when the sale occurs.

Income Taxes

Deferred taxes are recorded using the asset and liability method, whereby deferred tax assets are recognized for deductible temporary differences and operating loss and tax credit carry forwards; deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax basis. Future tax benefits for net operating loss carryforwards are recognized to the extent that realization of these benefits is considered more likely than not. Deferred tax assets are reduced by a valuation allowance when it is more likely than not that some portion or all the deferred tax assets will not be realized.

The Company follows the provisions of ASC 740-10, Uncertainty in Income Taxes. A reconciliation of the beginning and ending amount of unrecognized tax benefits has not been provided since there are no unrecognized benefits for all periods presented. The Company has not recognized interest expense or penalties from the implementation of ASC 740-10. If there were an unrecognized tax benefit, the Company would recognize interest accrued related to unrecognized tax benefit in interest expense and penalties in operating expenses.

In accordance with Section 15 of the Internal Revenue Code, the Company utilized a federal statutory rate of 21% for our fiscal 2025 and 2024 tax years. The net tax expense for the fiscal years ended May 31, 2025, and 2024, was zero. As of May 31, 2025, and 2024, the Company has a full valuation allowance as management does not consider it more likely than not that the benefits from the deferred tax assets will be realized.

Basic and Diluted Net Earnings (Loss) Per Share

The Company calculates basic net earnings (loss) per share by dividing the net earnings (loss) by the weighted-average number of common shares outstanding during the period, without consideration of potential dilutive securities. Diluted net earnings (loss) per share is computed by dividing the net earnings (loss) by the sum of the weighted-average number of common shares outstanding during the period plus the dilutive effects of potentially dilutive securities outstanding during the period. Potentially dilutive securities include warrants to purchase shares of common stock, stock options, convertible shares of preferred stock, and convertible notes. For periods in which the Company has generated a net loss, the basic and diluted net loss per share are the same, as the inclusion of the potentially dilutive securities would be anti-dilutive.

CYDY US Equity

CYDY · 10-K · period ended 2025-05-31

Item 1A. RISK FACTORS

Item 1B. UNRESOLVED STAFF COMMENTS

Item 1C. CYBERSECURITY

Item 2. PROPERTIES

Item 3. LEGAL PROCEEDINGS

Item 4. MINE SAFETY DISCLOSURES

Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Item 6. [Reserved]

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Item 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

CYDY US Equity☆

CYDY · 10-K · period ended 2025-05-31

Item 1A. RISK FACTORS

Item 1B. UNRESOLVED STAFF COMMENTS

Item 1C. CYBERSECURITY

Item 2. PROPERTIES

Item 3. LEGAL PROCEEDINGS

Item 4. MINE SAFETY DISCLOSURES

Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Item 6. [Reserved]

Item 7. MANAGEMENT’S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS

Item 7A. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

Item 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA

CYDY US Equity