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PTIX 10-K & 10-Q changes, risk factors and insider trading

Protagenic Therapeutics, Inc.\new · OTC · Pharmaceutical Preparations · CIK 1022899 · All filings on SEC.gov

Everything below is quoted or computed from Protagenic Therapeutics, Inc.\new's public SEC filings. It is not a recommendation to buy or sell. Automated comparisons can contain errors; confirm with the original filing.

At a glance

25 / 4risk-factor paragraphs added / removed in latest 10-K
11new risk-factor headings
7Form 4 filings reporting open-market purchases (last 180 days)
0Form 4 filings reporting open-market sales (last 180 days)

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What changed in the latest 10-K

Comparing 10-K filed 2026-08-14 (period ending 2026-03-31) with 10-K filed 2025-03-31 (period ending 2024-12-31).

Risk Factors (10-K Item 1A)

25new paragraphs
4removed paragraphs
32reworded paragraphs
15,367 → 16,905words in section

New heading “Our common stock has been delisted from Nasdaq and now trades only in the over-the-counter market, which has substantially reduced the liquidity and may adversely affect the price of our common stock.”

New heading “There is no assurance that we will be able to relist our common stock on Nasdaq or any other national securities exchange.”

New heading “The application of “penny stock” rules to our common stock could further limit trading activity and the liquidity of our common stock.”

New heading “Delisting may reduce or eliminate analyst coverage and institutional ownership of our common stock.”

New heading “Our delisting impairs our access to the capital markets and could increase the cost and difficulty of raising capital.”

New heading “Our common stock may no longer constitute a “covered security,” which could subject offers and sales to additional state securities law requirements.”

New heading “Our common stock may be removed or otherwise excluded from stock market indices, resulting in forced selling.”

New heading “Our common stock may not be eligible for margin borrowing and could be subject to limitations on electronic clearing and settlement.”

New heading “Our delisting may harm our reputation and our relationships with customers, suppliers, employees, and other stakeholders.”

New heading “The market price of our common stock has been and may continue to be volatile, and the thinner over-the-counter market may make our common stock more susceptible to manipulation.”

New heading “Future sales or issuances of our common stock, including at depressed market prices, could result in substantial dilution and could further depress our stock price.”

Largest changes (selected automatically by length and topic keywords; quoted verbatim, no commentary)

New text topics: delist, liquidity
“Our common stock has been delisted from Nasdaq and now trades only in the over-the-counter market, which has substantially reduced the liquidity and may adversely affect the price of our common stock.”
see in full comparison
New text topics: delist
“Our delisting may harm our reputation and our relationships with customers, suppliers, employees, and other stakeholders.”
see in full comparison
New text topics: delist
“Our delisting impairs our access to the capital markets and could increase the cost and difficulty of raising capital.”
see in full comparison
New text topics: delist
“Delisting may reduce or eliminate analyst coverage and institutional ownership of our common stock.”
see in full comparison
New text topics: delist, liquidity
“Our common stock was delisted from the Nasdaq Capital Market effective January 5, 2026 and is currently quoted on the OTCQB under the symbol “PTIX.” Securities quoted in the over-the-counter market generally have significantly less liquidity than securities traded on a national securities exchange, due to factors such as a reduced number of institutional and other investors that will consider purchasing the securities, fewer market makers, wider bid-ask spreads, and lower trading volumes. …”
see in full comparison
New text topics: delist, liquidity
“While our common stock was listed on Nasdaq, it was a “covered security” under the National Securities Markets Improvement Act of 1996, which exempted it from registration and qualification requirements under state “blue sky” securities laws. Following our delisting, our common stock generally no longer qualifies for this exemption. …”
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Full comparison: every changed paragraph (61)

Green = added, red = removed. Unchanged paragraphs and tables are not shown. Read the complete text in the original filing.

Reworded

The Company’s 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. As of DecemberMarch 31, 2024,2026, the Company had incurred significant operating losses since inception, and continues to generate losses from operations, and has an accumulated deficit of $36,350,247.$4,029,629. Based on its cash resources as of DecemberMarch 31, 2024,2026, the Company has sufficient resources to fund its operations until the end of the third quarter quarter of 2025.2026. The consolidated financial statements included in this report do not include any adjustments relating to the recoverability and classification of asset amounts or the classification of liabilities that might be necessary should the Company be unable to continue as a going concern.

Reworded

We have generated net losses since we began operations, including $5,525,344net income of $1,367,977 and $5,000,497net loss of $3,591,858 for the years ended DecemberMarch 31, 20242026 and December March 31, 2023,2025, respectively. As of DecemberMarch 31, 2024,2026, we had an accumulated deficit of $36,303,216.$4,029,629. We have no approved products and have generated no product revenue. We expect that product development, preclinical and clinical programs will increase losses significantly over the next five years. In order to achieve profitability, we will need to generate significant revenue. We cannot be certain that we will generate sufficient revenue to achieve profitability. We anticipate that we will continue to generate operating losses and negative cash flow from operations and our current cash position is sufficient to fund our current business plan until the third quarter of 2025. 2026. We cannot be certain that we will ever achieve, or if achieved, maintain profitability. If our revenue grows at a slower rate than we anticipate or if our product development, marketing and operating expenses exceed our expectations or cannot be adjusted accordingly, our business, results of operation and financial condition will be materially adversely affected, and we may be unable to continue operations. We will not be able to generate product revenue unless and until one of our product candidates successfully completes clinical trials and receives regulatory approval. As our most advanced product candidates are at an early proof-of-concept stage, we do not expect to receive revenue from any product candidate for the foreseeable future. We may seek to obtain revenue from collaboration or licensing agreements with third parties. We currently have no such agreements which will provide us with material, ongoing future revenue and we may never enter into any such agreements. Even if we eventually generate revenues, we may never be profitable, and if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis.

Removed

We will not be able to generate product revenue unless and until one of our product candidates successfully completes clinical trials and receives regulatory approval. As our most advanced product candidates are at an early proof-of-concept stage, we do not expect to receive revenue from any product candidate for the foreseeable future. We may seek to obtain revenue from collaboration or licensing agreements with third parties. We currently have no such agreements which will provide us with material, ongoing future revenue and we may never enter into any such agreements. Even if we eventually generate revenues, we may never be profitable, and if we do achieve profitability, we may not be able to sustain or increase profitability on a quarterly or annual basis.

Reworded

We need to obtain financing in order to continue our operations.

Reworded

As of DecemberMarch 31, 2024,2026, we have incurred an accumulated deficit of $36,279,932.$4,029,629. We expect to continue to incur substantial operating losses over the next several years for the clinical development of our current and future licensed or purchased product candidates.

Reworded

We may not be able to obtain and maintain the third partythird-party relationships that are necessary to develop, commercialize and manufacture some or all of our product candidates.

Reworded

We expect to expend substantial management time and effort to enter into relationships with third parties and, if we successfully enter into into such relationships, to manage these relationships. In addition, substantial amounts of our expenditures will be paid to third parties in these relationships. However, we cannot control the amount or timing of resources our contract partners will devote to our research and development programs, product candidates or potential product candidates, and we cannot guarantee that these parties will fulfill their obligations to us under these arrangements in a timely fashion, if at all.

Reworded

We currently have no sales, marketing or distribution capabilities. To commercialize our product candidates, we must either develop our own sales, marketing and distribution capabilities, which will be expensive and time consuming,time-consuming, or make arrangements with third parties to perform these services for us. If we decide to market any of our products on our own, we will have to commit significant resources to developing a marketing and sales force and supporting distribution capabilities. If we decide to enter into arrangements with third parties for performance of these services, we may find that they are not available on terms acceptable to us, or at all. If we are not able to establish and maintain successful arrangements with third parties or build our own sales and marketing infrastructure, we may not be able to commercialize our product candidates which would adversely affect our business and financial condition.

Reworded

Data provided by collaborators and other parties upon which we relyrely, have not been independently verified and could turn out to be inaccurate, misleading, or incomplete.

Reworded

We cannot be certain that any of our product candidates will gain market acceptance among physicians, patients, healthcare payers, pharmaceutical companiescompanies, or others. Demonstrating the safety and efficacy of our product candidates and obtaining regulatory approvals will not guarantee future revenue. Sales of medical products largely depend on the reimbursement of patients’ medical expenses by government healthcare programs and private health insurers. Governments and private insurers closely examine medical products to determine whether they should be covered by reimbursement and if so, the level of reimbursement that will apply. We cannot be certain that third party payers will sufficiently reimburse sales of our products,products or enable us to sell our products at profitable prices. Similar concerns could also limit the reimbursement amounts that health insurers or government agencies in other countries are prepared to pay for our products. In many countries where we plan to market our products, including Europe and Canada, the pricing of prescription drugs is controlled by the government or regulatory agencies. Regulatory agencies in these countries could determine that the pricing for our products should be based on prices of other commercially available drugs for the same disease, rather than allowing us to market our products at a premium as new drugs. Sales of medical products also depend on physicians’ willingness to prescribe the treatment, which is likely to be based on a determination by these physicians that the products are safe, therapeutically effectiveeffective, and cost-effective. We cannot predict whether physicians, other other healthcare providers, government agencies or private insurers will determine that our products are safe, therapeutically effective and and cost effective relative to competing treatments.

Reworded

To date, our product candidates have been manufactured in small quantities by us and third partythird-party manufacturers for preclinical studies. If any of our product candidates is approved by the FDA or other regulatory agencies for commercial sale, we will need to manufacture it in larger quantities and we intend to use third party manufacturers for commercial quantities. Our third partythird-party manufacturers may not be able to successfully increase the manufacturing capacity for any of our product candidates in a timely or efficient manner, or at all. If we are unable to successfully increase the manufacturing capacity for a product candidate, the regulatory approval or commercial launch of that product candidate may be delayed or there may be a shortage in the supply of the product candidate. Our failure or the failure of our third partythird-party manufacturers to comply with the FDA’s good manufacturing practices and to pass inspections of the manufacturing facilities by the FDA or other regulatory agencies could seriously harm our business.

Reworded

Comparative effectiveness of research demonstrating benefits of a competitor’s product could adversely affect the sales of our product candidates. If third-party payers do not consider our products to be cost-effective compared to other available therapies, they may not cover our products as a benefit under their plans or, if they do, the level of payment may not be sufficient to allow us to sell our products on a profitable basis.

Reworded

Any agreements we have or may enter into with third parties, such as collaboration, license, formulation supplier, manufacturing, clinical research research organization or clinical trial agreements, may give rise to disputes regarding the rights and obligations of the parties. Disagreements could develop over rights to ownership or use of intellectual property, the scope and direction of research and development, the approach for regulatory approvals or commercialization strategy. We intend to conduct research programs in a range of therapeutic areas, but our pursuit of these opportunities could result in conflicts with the other parties to these agreements who may be developing or selling pharmaceuticals or conducting other activities in these same therapeutic areas. Any disputes or commercial conflicts could lead to the termination of our agreements, delay progress of our product development programs, compromise our ability to renew agreements or obtain future agreements, lead to the loss of intellectual property rights or result in costly litigation.

Reworded

There are many companies that are seeking to develop products and therapies for the treatment of mood, anxietyanxiety, and neurodegenerative disorders. Many of our competitors have substantially greater financial, technical, humanhuman, and other resources than we do and may be better equipped to develop, manufacture and market technologically superior products. In addition, many of these competitors have significantly greater experience than we do in undertaking preclinical testing and human clinical studies of new pharmaceutical products and in obtaining regulatory approvals of human therapeutic products. Accordingly, our competitors may succeed in obtaining FDA approval for superior products.

Removed

Positive or timely results from preclinical studies and early clinical trials do not ensure positive or timely results in late-stage clinical trials or product approval by the FDA or any other regulatory authority. Product candidates that show positive preclinical or early clinical results often fail in later stage clinical trials. Data obtained from preclinical and clinical activities is susceptible to varying interpretations, which could delay, limit, or prevent regulatory approvals.

Reworded

We have limited experience in conducting the clinical trials required to obtain regulatory approval. We may not be able to conduct clinical trials at preferred sites, enlist clinical investigators, enroll sufficient numbers of participants, or begin or successfully complete clinical trials in a timely fashion, if at all. Any failure to perform may delay or terminate the trials. Our current clinical trials may be insufficient to demonstrate that our potential products will be active, safe, or effective. Additional clinical trials may be required if clinical trial results are negative or inconclusive, which will require us to incur additional costs and significant delays. If we do not receive the necessary regulatory approvals, we will not be able to generate product revenues and may not become profitable.

Reworded

If we fail to sustain and further build our intellectual property rights, competitors will be able to take advantage of our research and development efforts to develop competing products. If we are not able to protect our proprietary technology, trade secrets, and know-how, our competitors may use our inventions to develop competing products. Protagenic has obtained worldwide exclusive rights to PT00114 and related technology that was developed at UT. As of DecemberMarch 31, 2024,2026, we have fourfive patents issued by the Governments of the United States, Canada, European Union (validated in Germany, France and Great Britain) and AustraliaHong Kong on our original platform technology, all of which have expired aside from the one in the United States. The patent applications were made in the name of Dr. David A. Lovejoy and inventors, but the Company’s exclusive, worldwide rights to such patent applications are included in the License Agreement with UT. We have eight issued patents (Canada, Great Britain, Europe (GPC and additionally validated in Switzerland, Great Britain, Ireland and Spain) and the United States and five pending patent applications in related technology that the company has rights in or own.

Reworded

In addition to our patentable technology, we also rely on unpatented technology, trade secrets, and confidential information. We may not be able to effectively protect our rights to this technology or information. Other parties may independently develop substantially equivalent information and techniques or otherwise gain access to or disclose our technology. We generally require each of our employees, consultants, collaborators, and certain contractors to execute a confidentiality agreement at the commencement of an employment, consulting, collaborative, or contractual relationship with us. However, these agreements may not provide effective protection of our technology or informationinformation, or, in the event of unauthorized use or disclosure, they may not provide adequate remedies.

Reworded

Our patent position is generally uncertain and involves complex legal and factual questions. In addition, the laws of some foreign countries do not protect proprietary rights to the same extent as the laws of the United States, and other biotechnology companies have encountered significant problems in protecting and defending their proprietary rights in foreign jurisdictions. Whether filed in the United States or abroad, our patent applications may be challenged or may fail to result in issued patents. In addition, any future patents we obtain may not be sufficiently broad to prevent others from practicing our technologies or from developing or commercializing competing products. Furthermore, others may independently develop or commercialize similar or alternative technologies or drugs, or design around our patents. Our patents may be challenged, invalidatedinvalidated, or fail to provide us with any competitive advantages. We may not have the funds available to protect our patents or other technology; such protection is costly and can result in further litigation expenses.

Reworded

We have tomust comply with our obligations in our intellectual property licenses with third parties.

Reworded

If we fail to comply with our obligations in our intellectual property licenses with third parties, we could lose license rights that are important to our business. We are a party to the License Agreement with UT under which we receive the right to practice and use important third partythird-party patent rights. We may enter into additional licenses in the future. Our existing licenses impose, and we expect future licenses will impose, various diligences, milestone payment, royalty, insurance and other obligations on us. If we fail to comply with these obligations, the licensor may have the right to terminate the license, in which event we might not be able to market any product that is covered by the licensed patents.

Reworded

We may need to resort to litigation to enforce or defend our intellectual property rights, including any patents issued to us. If a competitor or collaborator files a patent application claiming technology also invented by us, in order to protect our rights, we may have to participate in an expensive and time consumingtime-consuming interference proceeding before the United States Patent and Trademark Office. We cannot guarantee that our product candidates will be free of claims by third parties alleging that we have infringed their intellectual property rights. Third parties may assert that we are employing their proprietary technologies without authorization and they may resort to litigation to attempt to enforce their rights. Third parties may have or obtain patents in the future and claim that the use of our technology or any of our product candidates infringes their patents. We may not be able to develop or commercialize combination product candidates because of patent protection others have. Our business will be harmed if we cannot obtain a necessary or desirable license, can obtain such a license only on terms we consider to be unattractive or unacceptable, or if we are unable to redesign our product candidates or processes to avoid actual or potential patent or other intellectual property infringement. Obtaining, protecting and defending patent and other intellectual property rights can be expensive and may require us to incur substantial costs, including the diversion of management and technical personnel. An unfavorable ruling in patent or intellectual property litigation could subject us to significant liabilities to third parties, require us to cease developing, manufacturing or selling the affected products or using the affected processes, require us to license the disputed rights from third parties, or result in awards of substantial damages against us.

Reworded

There can be no assurance that we would prevail in any intellectual property infringement action, will be able to obtain a license to any thirdthird-party party intellectual property on commercially reasonable terms, successfully develop non-infringing alternatives on a timely basis, or license license non-infringing alternatives, if any exist, on commercially reasonable terms. Any significant intellectual property impediment to our ability to develop and commercialize our products could seriously harm our business and prospects.

Reworded

The USPTO and various foreign governmental patent agencies require compliance with a number of procedural, documentary, fee paymentpayment, and other other provisions during the patent process. There are situations in which noncompliance can result in abandonment or lapse of a patent or patent application, resulting in partial or complete loss of patent rights in the relevant jurisdiction. In such an event, competitors might might be able to enter the market earlier than would otherwise have been the case.

Reworded

Any license, collaboration or other intellectual property-related agreements impose, and any future license, collaboration or other intellectual property-related agreements we enter into are likely to impose, various development, commercialization, funding, milestone, royalty, diligence, sublicensing, insurance, patent prosecution and enforcement or other obligations on us. If we breach any of these obligations, or use the intellectual property licensed to us in an unauthorized manner, we may be required to pay damagesdamages, and the licensor may have the right to terminate the license. In spite of our best efforts, any of our future licensors might conclude that we have materially breached our license agreements and might therefore terminate the license agreements, thereby removing our ability to develop and commercialize products and technologies covered by these license agreements. Any license agreements we enter into may be complex, and certain provisions in such agreements may be susceptible to multiple interpretations. The resolution of any contract interpretation disagreement that may arise could narrow what we believe to be the scope our rights to the relevant intellectual property or technology, or increase what we believe to be our financial or other obligations under the relevant agreement, either of which could have a material adverse effect on our business, financial condition, results of operations, and prospects.

Reworded

Furthermore, we may not have the right to control the preparation, filing, prosecution, maintenance, enforcement and defense of patents and patent applications that we license from third parties. Therefore, we cannot be certain that these patents and patent applications will be prepared, filed, prosecuted, maintained, enforcedenforced, and defended in a manner consistent with the best interests of our business. If our future licensors fail to prosecute, maintain, enforce and defend patents we may in-license, or lose rights to licensed patents or patent applications, our license rights may be reduced or eliminated. In such circumstances, our right to develop and commercialize any of our products or drug candidates that is the subject of such licensed rights could be materially adversely affected. In certain circumstances, our licensed patent rights are subject to our reimbursing our licensors for their patent prosecution and maintenance costs.

Reworded

If we are not able to retain our current senior management team and our scientific advisors or continue to attract and retain qualified scientific, technicaltechnical, and business personnel, our business will suffer.

Reworded

To grow, we will eventually need to hire a significant number of qualified commercial, scientificscientific, and administrative personnel. However, there is intense competition for human resources, including management in the technical fields in which we operate, and we may not be able to attract and retain qualified personnel necessary for the successful development and commercialization of our product candidates. Our inability to attract new employees or to retain existing employees could limit our growth and harm our business.

Reworded

In connection with our drug research and development efforts, we or our CROs may collect and use a variety of personal data, such as names, mailing addresses, email addresses, phone numbersnumbers, and clinical trial information. Although we have extensive measures in place to prevent the sharing and loss of patient data in our clinical trial processes associated with our developed technologies and drug candidates, any failure to prevent or mitigate security breaches or improper access to, use of, or disclosure of our clinical data or patients’ personal data could result in significant liability under state (e.g., state breach notification laws), federal (e.g., HIPAA, as amended by HITECH), and international laws (e.g., the GDPR). Any failure to prevent or mitigate security breaches or improper access to, use of, or disclosure of our clinical data or patients’ personal data may cause a material adverse impact to our reputation, affect our ability to conduct new studies and potentially disrupt our business. We may also rely on third-party IT vendors to host or otherwise process some of our data and that of users, and any failure by such IT vendor to prevent or mitigate security breaches or improper access to or disclosure of such information could have similarly adverse consequences for us. If we are unable to prevent or mitigate the impact of such security or data privacy breaches, we could be exposed to litigation and governmental investigations, which could lead to a potential disruption to our business.

Reworded

Our research and development and drug candidates and future commercial manufacturing may involve the use of hazardous materials and various chemicals. We currently do not maintain a research laboratory, but we engage third-party research organizations and manufacturers to conduct our preclinical studies, clinical trialstrials, and manufacturing. These third-party laboratories and manufacturers are subject to federal, federal, state and local laws and regulations governing the use, manufacture, storage, handling and disposal of these hazardous materials. We We must rely on the third parties’ procedures for storing, handling and disposing of these materials in their facilities to comply with the relevant guidelines of the states in which they operate and the Occupational Safety and Health Administration of the U.S. Department of Labor. Although we believe that their safety procedures for handling and disposing of these materials comply with the standards mandated by applicable regulations, the risk of accidental contamination or injury from these materials cannot be eliminated. If an accident occurs, this could result in significant delays in our development. We are also subject to numerous environmental, healthhealth, and workplace safety laws and regulations. Although we maintain workers’ compensation insurance to cover us for costs and expenses we may incur due to injuries to our employees, this insurance may not provide adequate coverage against potential liabilities. Additional federal, statestate, and local laws and regulations affecting our operations may be adopted in the future. We may incur substantial costs to comply with, and substantial fines or penalties if we violate,violate any of these laws or regulations.

Added

Beginning January 5, 2026, the Company expects its common stock and warrants to be quoted for trading on the over-the-counter market. On December 31, 2025, the Company received a letter from Nasdaq stating that trading of the Company’s securities on Nasdaq would cease at the close of trading on January 2, 2026, and that Nasdaq determined to delist the Company’s securities based on the Company’s failure to satisfy Nasdaq continued listing requirements, including Nasdaq Listing Rule 5550(b)(1) (minimum stockholders’ equity) and Nasdaq Listing Rule 5250(c)(1) (timely filing of periodic reports).

Added

OTC trading is effected through registered broker-dealers, and quotation and trading information is generally available through brokerage platforms and publicly available quotation services. The Company intends to continue to file periodic and current reports with the SEC, which will be available on the SEC’s EDGAR system. The OTC market may have different liquidity and trading characteristics than a national securities exchange.

Added

The Company is evaluating steps to regain compliance with Nasdaq listing requirements and to seek relisting on Nasdaq. The Company also intends to engage with market participants to facilitate the OTC transition and support liquidity in its securities. The Company has withdrawn its request for a hearing before a Nasdaq Hearings Panel and, accordingly, Nasdaq’s determination is final.

Removed

If we fail to comply with the continued minimum closing bid requirements of Nasdaq or other requirements for continued listing, including stockholder equity requirements, our common stock may be delisted and the price of our common stock and our ability to access the capital markets could be negatively impacted.

Reworded

Disclosure also has to be made about the risks of investing in penny stocks in both public offerings and in secondary trading and about the commissions payable to both the broker-dealer and the registered representative, current quotations for the securities and the rights and remedies available to an investor in cases of fraud in penny stock transactions. Finally, monthly statements have tomust be sent disclosing recent price price information for the penny stock held in the account and information on the limited market in penny stocks.

Reworded

The market price of our common stock may fluctuate substantially and will depend on a number of factorsfactors, many of which are beyond our control and may not be related to our operating performance. These fluctuations could cause you to lose all or part of your investment in our common stock since you might be unable to sell your shares at or above the price you pay for the shares. Factors that could cause fluctuations in the market price of our common stock include, but are not necessarily limited to, the following:

Reworded

Management has concluded that, during the year-ended DecemberMarch 31, 2024,2026, our internal controls and procedures were not effective to detect the inappropriate application of U.S. GAAP. Management identified the following material weaknesses set forth below in our internal control over financial reporting.

Removed

The stock market is subject to significant price and volume fluctuations. In the past, following periods of volatility in the market price of a company’s securities, securities class action litigation has often been initiated against such a company. Litigation initiated against us, whether or not successful, could result in substantial costs and diversion of our management’s attention and resources, which could harm our business and financial condition.

Reworded

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

Added

Our common stock has been delisted from Nasdaq and now trades only in the over-the-counter market, which has substantially reduced the liquidity and may adversely affect the price of our common stock.

Added

Our common stock was delisted from the Nasdaq Capital Market effective January 5, 2026 and is currently quoted on the OTCQB under the symbol “PTIX.” Securities quoted in the over-the-counter market generally have significantly less liquidity than securities traded on a national securities exchange, due to factors such as a reduced number of institutional and other investors that will consider purchasing the securities, fewer market makers, wider bid-ask spreads, and lower trading volumes. As a result, holders of our common stock may find it more difficult to sell their shares, may be unable to sell their shares at all, or may be able to sell only at prices substantially below the prices they might obtain on a national securities exchange. The market price of our common stock may also be more volatile and more susceptible to declines and to manipulative or abusive trading practices than it was while listed on Nasdaq.

Added

There is no assurance that we will be able to relist our common stock on Nasdaq or any other national securities exchange.

Added

We may seek to relist our common stock on a national securities exchange in the future, but our ability to do so depends on satisfying the applicable initial listing standards, which are generally more stringent than the continued listing standards we previously failed to satisfy, and may include minimum bid price, stockholders’ equity, market value, public float, round-lot holder, and corporate governance requirements. We cannot predict when, or whether, we will be able to meet these requirements, and any relisting would also be subject to the discretion and approval of the exchange. There can be no assurance that our common stock will be relisted, and a prolonged period of trading in the over-the-counter market may amplify the other risks described in this section.

Added

The application of “penny stock” rules to our common stock could further limit trading activity and the liquidity of our common stock.

Added

Our common stock is subject to the “penny stock” rules under the Securities Exchange Act of 1934. These rules impose additional sales practice and disclosure requirements on broker-dealers who sell our securities to persons other than established customers and accredited investors, including requirements to deliver a standardized risk disclosure document, to obtain the purchaser’s written agreement to the transaction prior to sale, and to disclose current bid and offer quotations and broker-dealer compensation. Because of these added burdens, many broker-dealers may be unwilling to effect transactions in our common stock. This could further reduce the trading activity and liquidity in our common stock and make it more difficult for stockholders to dispose of their shares.

Added

Delisting may reduce or eliminate analyst coverage and institutional ownership of our common stock.

Added

Securities analysts may discontinue or decline to provide research coverage of our common stock following our delisting, and the absence of analyst coverage may reduce investor interest and make it more difficult to establish a fair market price for our shares. In addition, certain institutional investors, mutual funds, pension funds, and other holders are subject to internal policies, fund mandates, or regulatory restrictions that prohibit or limit their ownership of securities not listed on a national securities exchange. As a result, our delisting may cause some existing holders to sell their shares and may discourage new institutional investment, each of which could depress demand for, and the trading price of, our common stock.

Added

Our delisting impairs our access to the capital markets and could increase the cost and difficulty of raising capital.

Added

We are currently not eligible to use a registration statement on Form S-3 to register primary offerings of our securities, and we may instead be required to use a registration statement on Form S-1, which is more costly, time-consuming, and less flexible and which does not permit the same forward incorporation by reference. Our reduced liquidity, narrower investor base, and lower and more volatile stock price may also make it more difficult and more expensive to raise capital through equity or equity-linked financings, and any such financings, if available at all, may be on terms that are dilutive or otherwise unfavorable to our existing stockholders. There can be no assurance that we will be able to obtain additional financing on acceptable terms, or at all, when needed.

Added

Our common stock may no longer constitute a “covered security,” which could subject offers and sales to additional state securities law requirements.

Added

While our common stock was listed on Nasdaq, it was a “covered security” under the National Securities Markets Improvement Act of 1996, which exempted it from registration and qualification requirements under state “blue sky” securities laws. Following our delisting, our common stock generally no longer qualifies for this exemption. As a result, offers and sales of our common stock, including in connection with future capital-raising transactions and certain secondary market trading, may be subject to registration or qualification under, or the availability of exemptions from, the securities laws of the various states and other U.S. jurisdictions. Compliance with these requirements may increase our costs, limit the jurisdictions in which our securities may be offered or sold, and further reduce the liquidity of our common stock.

Added

Our common stock may be removed or otherwise excluded from stock market indices, resulting in forced selling.

Added

As a result of our delisting, our common stock has been or may be removed from any stock market indices in which it was previously included. Index funds and other investment vehicles that track those indices are generally required to sell securities that are removed from the relevant index, which may result in additional selling pressure on our common stock over a concentrated period and could cause the trading price of our common stock to decline.

Added

Our common stock may not be eligible for margin borrowing and could be subject to limitations on electronic clearing and settlement.

Added

Because of our delisting, our common stock may not be eligible to be used as collateral for margin loans under applicable Federal Reserve Board and broker-dealer requirements, which may reduce demand from certain investors. In addition, the continued eligibility of our common stock for book-entry clearance and settlement through The Depository Trust Company is subject to DTC’s policies and procedures. If DTC were to impose a “chill” or “freeze” on, or otherwise discontinue eligibility for, our common stock, the ability of holders to transfer or trade their shares could be significantly impaired and the liquidity and value of our common stock could be materially adversely affected.

Added

Our delisting may harm our reputation and our relationships with customers, suppliers, employees, and other stakeholders.

Added

The delisting of our common stock may be perceived negatively by our customers, suppliers, lenders, business partners, current and prospective employees, and others with whom we do business, and may be viewed as an indicator of financial or operational difficulty. This negative perception could impair our ability to attract and retain customers, vendors, and talent, to maintain commercial and financing relationships on favorable terms, and to compete effectively, any of which could have a material adverse effect on our business, financial condition, and results of operations.

Added

The market price of our common stock has been and may continue to be volatile, and the thinner over-the-counter market may make our common stock more susceptible to manipulation.

Added

The trading price of our common stock has been, and is likely to continue to be, highly volatile and subject to wide fluctuations in response to numerous factors, many of which are beyond our control. The lower trading volumes and reduced number of market makers characteristic of the over-the-counter market can amplify price swings and may make our common stock more vulnerable to manipulative or fraudulent trading schemes, including “pump-and-dump” and short-selling campaigns. Such activity, and the resulting volatility, could cause the price of our common stock to decline rapidly and without regard to our operating performance, and could expose us to securities litigation, which is costly and diverts management attention regardless of outcome.

Added

Future sales or issuances of our common stock, including at depressed market prices, could result in substantial dilution and could further depress our stock price.

Showing the first 60 of 61 changed paragraphs. The complete comparison will be part of Pro (coming soon). Meanwhile you can read the full text in the original filing.

Management's Discussion & Analysis (MD&A) (10-K Item 7)

38new paragraphs
4removed paragraphs
10reworded paragraphs
2,156 → 3,902words in section

New heading “Acquisition of five preclinical drug candidate assets”

New heading “Settlement Agreement”

New heading “Unwind, Termination and Share Exchange Agreement”

New heading “Notice of Delisting and Related Actions”

New heading “Change of Fiscal Year”

New heading “Corporate Restructuring”

Removed heading “Nasdaq Hearings Panel”

Largest changes (selected automatically by length and topic keywords; quoted verbatim, no commentary)

New text topics: delist
“Notice of Delisting and Related Actions”
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New text topics: restructuring, workforce reduction
“In connection with the Restructuring Plan, the Board terminated the employment of (i) Barrett Evans as Chief Executive Officer and President and (ii) Colin Stott as Chief Operating Officer, in each case effective immediately. Messrs. Evans and Stott remain members of the Company’s Board of Directors. Any severance or other compensatory agreements, if applicable, will be disclosed when determined. Workforce reductions also included the certain roles primarily associated with preclinical operations, regulatory affairs, and intellectual property functions.”
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New text topics: delist
“On June 17, 2025, the Company received a letter from Nasdaq stating that the Nasdaq Hearings Panel found the Company in compliance with Listing Rules 5550(a)(2), 5550(a)(4), 5550(b)(1), and 5620(a), the Bid Price, Public Float, Equity and Annual Shareholder Meeting Rule, respectively as required by the February 19, 2025, decision. The letter also stated that pursuant to Listing Rule 5815(d)(4)(B), the Company will be subject to a Mandatory Panel Monitor for a period of one year from the date of this letter. …”
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New text topics: restructuring
“Corporate Restructuring”
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Removed text topics: fine
“In June 2024, the SEC declared effective a shelf registration statement filed by us. This shelf registration statement allows us to issue any combination of our common stock, preferred stock, debt securities, warrants, or units from time to time for an aggregate initial offering price of up to $100.0 million. In July 2021, we entered into an At Market Issuance Agreement, or the ATM Agreement, with B. Riley Securities, Inc. …”
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New text topics: delist
“The Company’s common stock was delisted from the Nasdaq Capital Market effective January 5, 2026 and is currently quoted on the OTCQB under the symbol “PTIX.””
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Reworded

You should read the following discussion and analysis of our financial condition and results of operations together with our financial statements and the related notes included at the end of this report. This discussion and other parts of this report contain forward-looking statements that involve risks and uncertainties such as statements of our plans, objectives, expectationsexpectations, and intentions. As a result of many factors, including those factors set forth in the “Risk factors” section of this report, our actual results could differ materially from the results described in or implied by the forward-looking statements contained in the following discussion and analysis.

Added

Acquisition of five preclinical drug candidate assets

Added

As a result of the Exchange Agreement with Alterola Biotech Inc., the Company acquired five preclinical drug candidate assets and five new employees, all of whom were working for, or affiliated with, the Alterola subsidiary known as Phytanix Bio, Inc. The drug candidate assets temporarily expanded our pipeline into multiple therapeutic areas beyond the target markets of PT00114, supported by an intellectual property portfolio.

Added

Settlement Agreement

Added

On February 17, 2026, the Company entered into a Settlement Agreement (the “Settlement Agreement”) with Alterola Biotech Inc., EMC2 Capital LLC, and the former stockholders of Phytanix Bio (collectively, the “Former Phytanix Stockholders”), in connection with the litigation styled Protagenic Therapeutics, Inc. v. Alterola Biotech Inc., et al., Case No. 2025-1238-KMM, pending in the Court of Chancery of the State of Delaware (the “Litigation”).

Added

The Settlement Agreement provides for, among other things, the dismissal of the Litigation and the execution of an agreement to terminate, and unwind the transactions contemplated by, the Share Exchange Agreement dated May 15, 2025 (the “SEA”). Pursuant to the SEA, the Company had previously reverse merged with Phytanix Bio.

Added

Unwind, Termination and Share Exchange Agreement

Added

On February 17, 2026, the Company entered into an Unwind, Termination, and Share Exchange Agreement (the “Unwind Agreement”) with Phytanix Bio, Alterola Biotech Inc., EMC2 Capital LLC, the Former Phytanix Stockholders, and Colin Stott, as Sellers’ Representative. The Company, Phytanix Bio, Alterola Biotech Inc., EMC2 Capital LLC, the Former Phytanix Stockholders, and Sellers’ Representative are collectively referred to herein as the “Parties”. The closing of the unwind transactions (the “Closing”) occurred simultaneously with the execution of the Unwind Agreement on February 17, 2026.

Added

Pursuant to the Unwind Agreement:

Added

The Unwind Agreement also includes:

Added

The foregoing descriptions of the Settlement Agreement and the Unwind Agreement do not purport to be complete and are qualified in their entirety by reference to the full text of the Settlement Agreement and the Unwind Agreement, copies of which are filed as exhibits 10.1 and 10.2, respectively, to the Current Report on Form 8-K filed by the Company on February 17, 2026 and are incorporated herein by reference.

Added

Notice of Delisting and Related Actions

Removed

Nasdaq Hearings Panel

Removed

On January 22, 2025, Nasdaq provided a notice to the Company that the Company had not regained compliance with Rule 5550(a)(2) and is not eligible for a second 180 calendar day compliance period as the Company does not comply with the requirements for initial listing on The Nasdaq Capital Market. This notification is part of the ongoing discussions with the Nasdaq Hearings Panel (the “Panel”) regarding the Company’s listing status, and the Company included this matter in its presentation to the Panel on January 30, 2025.

Reworded

On January 22, 2025, Nasdaq provided a notice to the Company that the Company had not regained compliance with Rule 5550(a)(2) and is not eligible for a second 180 calendar day compliance period as the Company does not comply with the requirements for initial listing on The Nasdaq Capital Market. This notification is part of the ongoing discussions with the Nasdaq Hearings Panel (the “Panel”) regarding the Company’s listing status, and the Company included this matter in its presentation to the Panel on January 30, 2025.On February 19, 2025, the Company received a hearing panel decision from Nasdaq (Nasdaq Listing Qualifications Hearings Docket No. NQ 7072C-25) indicating that its provisional plan for regaining compliance with the Nasdaq listing requirements had been accepted. For continued listing on the Nasdaq Capital Market, the Company has until April 28, 2025 to: (1) demonstrate compliance with Nasdaq Rules 5550(a)(2) and 5550(b)(2), (2) file a public disclosure describing any transactions undertaken by the Company to increase its equity and provide andan indication of of its equity following those transactions, and (3) provide the Panel with an update on its fundraising plans and updated income projections for the next 12 months.

Added

On April 18, 2025, the Company held a Special Meeting of Shareholders in which the Shareholders voted to authorize a reverse split of a magnitude between 1-for-10 and 1-for-20, for the purpose of increasing the chances of the Company regaining compliance with Nasdaq Listing Rule. 5550(a)(2). The Board determined that the best ratio to use was 1-for-14, because it would be the highest ratio that maintained at least 500,000 shares remaining in the Company’s public float, while maximizing the Company’s likely price per share.

Added

On April 25, 2025, the Company provided an update to Nasdaq on its plans for both minimum bid compliance and capital raising, along with a request for an extension on the April 28, 2025 deadline. The update included that the 1-for-14 reverse split would be effective May 5, 2025, and the company had engaged a syndicate of two underwriters to market and implement an equity financing for the purpose of raising enough capital to comply with Nasdaq Listing Rule 5810(c)(3)(A). On May 1, 2025, Nasdaq provided a response to the Company’s representative that the Panel has approved the Company’s extension request. As a result, the Company believes that it should be able to achieve a minimum bid price for 10 days above $1 by May 16, 2025, and the shareholder equity compliance by May 19, 2025.

Added

On June 17, 2025, the Company received a letter from Nasdaq stating that the Nasdaq Hearings Panel found the Company in compliance with Listing Rules 5550(a)(2), 5550(a)(4), 5550(b)(1), and 5620(a), the Bid Price, Public Float, Equity and Annual Shareholder Meeting Rule, respectively as required by the February 19, 2025, decision. The letter also stated that pursuant to Listing Rule 5815(d)(4)(B), the Company will be subject to a Mandatory Panel Monitor for a period of one year from the date of this letter. If, within that one-year monitoring period, Staff finds the Company again out of compliance with the Equity Rule, notwithstanding Rule 5810(c)(2), the Company will not be permitted to provide the Staff with a plan of compliance with respect to that deficiency and Staff will not be permitted to grant additional time for the Company to regain compliance with respect to that deficiency, nor will the company be afforded an applicable cure or compliance period pursuant to Rule 5810(c)(3). Instead, Staff will issue a Delist Determination Letter, and the Company will have an opportunity to request a new hearing with the initial Panel or a newly convened Hearings Panel if the initial Panel is unavailable. The Company will have the opportunity to respond/present to the Hearings Panel as provided by Listing Rule 5815(d)(4)(C). The Company’s securities may be at that time delisted from Nasdaq.

Added

On August 20, 2025, the “Company received a notification letter (the “Notification Letter”) from the Nasdaq Listing Qualifications department (“Nasdaq”) stating that it is not in compliance with Nasdaq Listing Rule 5250(c)(1) as a result of its failure to timely file its Quarterly Report on Form 10-Q for the period ended September 30, 2025 (the “Form 10-Q”) with the Securities and Exchange Commission (the “SEC”). The Notification Letter states that the Company has 60 calendar days to submit a plan to regain compliance and if Nasdaq accepts such plan, they can grant an exception of up to 180 calendar days from the Form 10-Q’s due date (or until February 17, 2026).

Added

As previously reported in the Company’s Notification of Late Filing on Form 12b-25 filed with the SEC on August 14, 2025 (the “Form 12b-25”), the Company was unable to file the Form 10-Q within the prescribed period without unreasonable effort or expense.

Added

The Company’s common stock was delisted from the Nasdaq Capital Market effective January 5, 2026 and is currently quoted on the OTCQB under the symbol “PTIX.”

Added

The Company intends to take the necessary steps to regain compliance with Nasdaq’s listing rules as soon as practicable. However, there can be no assurance that the Company will be able regain compliance and be able to be listed on Nasdaq again.

Added

Change of Fiscal Year

Added

On August 7, 2025, the Board approved a change in the Company’s fiscal year-end from December 31 to March 31, effective immediately. The Company filed a transition report on Form 10-QT with the Securities and Exchange Commission for the transition period beginning April 1, 2025 and ending June 30, 2025.

Added

Corporate Restructuring

Added

On August 8, 2025, the Board of Directors (the “Board”) approved a focused restructuring plan (the “Restructuring Plan”) to transition to a virtual operating model and concentrate capital on the Company’s highest-priority clinical program(s). In approving the Restructuring Plan, the Board determined that a disciplined cost structure and a sharper focus on near-term value inflection are in the best interests of the Company and its stockholders.

Added

Under the Restructuring Plan, the Company (i) temporarily suspended expenditures related to its preclinical programs described above and (ii) initiated a process to evaluate strategic alternatives for those programs, including partnerships and/or out-licensing, with the objective of advancing them with appropriate external funding while preserving cash for the Company’s lead clinical assets. By doing so, the Company reduced operating expenses, overhead, and headcount primarily associated with preclinical activities.

Added

When fully implemented, the Restructuring Plan is expected to reduce annualized operating expenses by approximately $8 million. The Company expects to incur one-time charges in connection with the Restructuring Plan; however, because key actions remain in process, the Company cannot reasonably estimate the total amount or timing of such charges at this time and will provide an update in a subsequent filing once such amounts are estimable.

Added

In connection with the Restructuring Plan, the Board terminated the employment of (i) Barrett Evans as Chief Executive Officer and President and (ii) Colin Stott as Chief Operating Officer, in each case effective immediately. Messrs. Evans and Stott remain members of the Company’s Board of Directors. Any severance or other compensatory agreements, if applicable, will be disclosed when determined. Workforce reductions also included the certain roles primarily associated with preclinical operations, regulatory affairs, and intellectual property functions.

Added

In total, the Restructuring Plan was designed to accomplish three things:

Added

On February 3, 2026, William (Bill) Nichols, Jr was appointed as the new President of the Company. On April 30, 2026, the Company’s former Chief Financial Officer, Alex Arow, departed the Company.

Added

As part of the unwind, Messrs. Evans and Stott were removed from the board of directors.

Added

Below are the changes in operating expenses between the year ended March 31, 2026 and 2025:

Added

The increase in research and development expense is due to the low year-ago comparable figure of only $376,740, which was driven by the fact that the former Phytanix Bio, Inc., which was acquired by the Company in May 2025 but is being treated as the accounting acquirer and therefore solely responsible for the historical 2025 operating expenses, was conducting little or no drug development work in the year ended March 31, 2025 (as Phytanix Bio had only been incorporated in Nevada in 2024). By contrast, the combined company was conducting a level of R&D spending in the year ended March 31, 2026 that was commensurate with a Phase I clinical trial, which was in progress for the compound known as PT11004.

Added

The increase in general and administrative expenses is due to an increase in stock compensation due to option vesting. The increase in R&D expense is due to lower expenses related to our clinical trials and related expenses due to changes in the Company’s stage of research and development and change to the Company’s outsourced research partners. The increase in transaction fees is from our merger that occurred in May 2025. This increase has been the primary driver of our increased loss from operations for the year ended March 31, 2026 compared to the same period for 2025.

Added

During the year ended March 31, 2026, the Company entered into a reverse merger with Phytanix Bio as well as an unwind of this merger. Due to this reverse merger, the Company presents the historical financial information of Phytanix Bio and only includes the financial information for Protagenic for the period after the reverse merger. The financial numbers for Phytanix Bio are consolidated only through the date of the unwind. (See Note 4) This limits comparability of the Company’s number between the years presented.

Added

Below are the changes in other income and expenses between the year ended March 31, 2026 and 2025:

Added

During the year ended March 31, 2026, the Company entered into a reverse merger with Phytanix Bio as well as an unwind of this merger. Due to this reverse merger, the Company presents the historical financial information of Phytanix Bio and only includes the financial information for Protagenic for the period after the reverse merger. The financial numbers for Phytanix Bio are consolidated only through the date of the unwind. (See Note 4) This limits comparability of the Company’s number between the years presented.

Removed

During the year ended December 31, 2024, we incurred a loss from operations of $5,700,950 as compared to $4,526,974 for the year ended December 31, 2023. The increase in the loss is due to an increase in research and development expense of $781,381 from $3,063,603 for the year ended December 31, 2023 to $3,844,984 for the year ended December 31, 2024, and an increase in general and administrative expenses of $551,502 from $1,207,107 for the year ended December 31, 2023 to $1,758,609 for the year ended December 31, 2024 offset by a decrease in research and development expenses from related parties of $158,907 from $256,264 for the year ended December 31, 2023 to $97,357 for the year ended December 31, 2024. The increase in research and development expense is due to additional cost related to the Company’s continued research and development efforts. The increase in general and administrative expenses was due to increased stock compensation expense in the current year.

Added

Below are the changes in cashflow between the years ended March 31, 2026 and 2025:

Removed

In June 2024, the SEC declared effective a shelf registration statement filed by us. This shelf registration statement allows us to issue any combination of our common stock, preferred stock, debt securities, warrants, or units from time to time for an aggregate initial offering price of up to $100.0 million. In July 2021, we entered into an At Market Issuance Agreement, or the ATM Agreement, with B. Riley Securities, Inc. and EF Hutton, division of Benchmark Investments, LLC, or the Sales Agents, under which we may issue and sell from time to time up to $10.0 million of our common stock through or to the Sales Agents, as agent or principal. Any sale of shares of our common stock under the Sales Agreement will be made under our shelf registration statement on Form S-3. Sales of our common stock under the Sales Agreement are made at market prices by any method that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended. The Company has sold approximately 800,000 shares under the ATM Agreement. Also, as the price of our stock has declined, the value of stock that can be sold under the ATM facility has declined. As of December 31, 2024, approximately $0.2 million of our common stock remained available for sale under the Sales Agreement.

Reworded

Operating activities used $4,216,517 and $3,703,776 in cash for the years ended December 31, 2024 and 2023, respectively. The use of cash in operating activities during the year ended DecemberMarch 31, 2024, 2026, primarily comprised of $5,525,344$1,367,977 net loss,income, $923,139$418,589 in stock compensation expense, $1,507,869 from the change in fair value of the derivative liability, $7,310,719 from the gain on disposal of the Phytanix subsidiary, $1,567,479 from amortization of debt discount, a decrease in prepaid expenses and other current assets of $99,627,$53,393, and a $463,127$1,056,323 increase of accounts payable and accrued expenses, which included payments to legal and accounting professionals, payments to consultants, and other administrative expenses.

Added

The use of cash in operating activities during the year ended March 31, 2025, primarily comprised of $3,591,858 net loss, $598,810 from amortization of debt discount, $103,184 from stock compensation expense, $773,234 from bad debt, and a $388,118 increase of accounts payable and accrued expenses, which included payments to legal and accounting professionals, payments to consultants, and other administrative expenses.

Reworded

InvestingThe activitiescash provided $2,802,880 and $4,775,482 by cash for the years ended December 31, 2024 and 2023, respectively. The cash provided by investing activities during the year ended DecemberMarch 31, 20242026 consisted of $3,100,000$943,180 from the salecash of marketable securities and partly offset by $297,120revived in the purchaseacquisition of Phytanix Bio and partly offset by $310,000 from cash spent in the unwind of marketablethe securities.Phytanix Bio acquisition.

Added

The cash provided by financing activities during the year ended March 31, 2026 consisted of $395,474 from the issuance of shares for cash, $533,898 from the increase in note payable for acquisition of Phytanix Bio, and $3,949,730 for proceeds from the exercise of warrants.

Reworded

FinancingThe activities provided $1,963,546 and $0 by cash for the years ended December 31, 2024 and 2023, respectively. The cash provided by financing activities during the year ended DecemberMarch 31, 20242025 consisted of $1,963,546$1,622,003 from the issuanceproceeds offrom sharesnotes payable and warrants$187,062 for cash.proceeds from related party loans.

Added

During the year ended March 31, 2026, the Company entered into a reverse merger with Phytanix Bio as well as an unwind of this merger. Due to this reverse merger, the Company presents the historical financial information of Phytanix Bio and only includes the financial information for Protagenic for the period after the reverse merger. The financial numbers for Phytanix Bio are consolidated only through the date of the unwind. (See Note 4) This limits comparability of the Company’s number between the years presented.

Reworded

We continually project anticipated cash requirements, predominantly from the ongoing funding requirements of our neuropeptide drug development program. The majority of these expenses relate to paying external vendors such as Contract Research Organizations (CROs) and peptide synthesizer companies. They could also include business combinations, capital expenditures, and new drug development working capital requirements. As of DecemberMarch 31, 2024,2026, we had cash of $1,838,469$1,509,178 and working capital of $940,108.$511,107.

Reworded

If we are able to successfully develop our drug, PT00114, and obtain FDA approval, we could then begin marketing and selling it in the United States and generate revenue. FDA approval to begin commercial sales is the singular gating item that will allow us to begin generating sales revenue in the U.S., so it will have an enormous impact on our business plan and our financial condition. It is anticipated that the sale of our drug will allow the Company to generate enough sales revenue to support all of our operations and to generate a profit. However, given the stage of development, even if FDA Approval is obtained, we do not anticipate generating any revenue from sales prior to 2027.2029. On May 22, 2024, we announced the results of the single dose portion of the Phase I study for PT00114. On December 9, 2025 we announced positive topline safety results from its Phase 1 Multiple Dose (MD) study of PT00114.

Reworded

Recent communications with the U.S. FDA have resulted in following revised guidance for clinical timelines.timelines:

Reworded

The Company has two: part-timetwo full-time employees: GaroBill H.Nichols, Armen, PhD,Jr, the ExecutivePresident Chairman,of Protagenic Therapeutics and Alexander K. Arrow, MD, the Chief Financial Officer, and one full-time employee, Lauren Mueller, PhD, a Senior Research Scientist. The Company also has sixthree paid consultants: Andrew Slee, PhD, Chief Operating Officer, RobertDavid S. Stein, MD, PhD, Chief Medical Officer, Dalia Barsyte,Lovejoy, PhD, Scientific Advisor, David Lovejoy, PhD, Scientific Advisor, and Zack Armen, Strategic Advisor.

Reworded

Our discussion and analysis of financial condition and results of operations are based upon our consolidated financial statements, which have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). The notes to the consolidated financial statements contained in this Annual Report describe our accounting policies used in the preparation preparation of the consolidated financial statements. None of those policies are deemed to be critical accounting policies nor critical critical accounting estimates. The preparation of these financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates. We continually evaluate our critical accounting policies and estimates. Significant estimates underlying the consolidated financial statements include valuation of stock options and warrants, derivative liabilities, and assessment of deferred tax asset valuation allowance. Foreign currency exchange rates, fair value of convertible notes, fair value of derivative liabilities, fair value of the valuation of Protagenic Therapeutics, Inc. and the purchase price allocation.

What changed in the latest 10-Q

Comparing 10-Q filed 2026-08-19 (period ending 2026-06-30) with 10-Q filed 2026-03-09 (period ending 2025-12-31).

Risk Factors (10-Q Part II, Item 1A)

0new paragraphs
0removed paragraphs
2reworded paragraphs
159 → 159words in section

The section in the latest 10-Q reads in full:

Our business is subject to substantial risks and uncertainties. Investing in our securities involves a high degree of risk. You should carefully consider the risk factors in Part I, Item 1A of our Annual Report on Form 10-K for the year ended March 31, 2026, filed with the SEC on August 14, 2026, together with the information contained elsewhere in this report, including Part I, Item 1 “Financial Statements” and Part I, Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and in our other SEC filings in evaluating our business. These risks and uncertainties could materially and adversely affect our business, financial condition, results of operations, prospects for growth, and the value of an investment in our securities.

There were no material changes to the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended March 31, 2026, filed with the SEC on August 14, 2026.

Full comparison: every changed paragraph (2)

Green = added, red = removed. Unchanged paragraphs and tables are not shown. Read the complete text in the original filing.

Reworded

Our business is subject to substantial risks and uncertainties. Investing in our securities involves a high degree of risk. You should carefully consider the risk factors in Part I, Item 1A of our Annual Report on Form 10-K for the year ended DecemberMarch 31, 2024,2026, filed with the SEC on MarchAugust 31,14, 2025,2026, together with the information contained elsewhere in this report, including Part I, Item 1 “Financial Statements” and Part I, Item 2. “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and in our other SEC filings in evaluating our business. These risks and uncertainties could materially and adversely affect our business, financial condition, results of operations, prospects for growth, and the value of an investment in our securities.

Reworded

There were no material changes to the risk factors previously disclosed in our Annual Report on Form 10-K for the year ended DecemberMarch 31, 2024,2026, filed with the SEC on MarchAugust 31,14, 2025.2026.

Management's Discussion & Analysis (MD&A) (10-Q Part I, Item 2)

20new paragraphs
32removed paragraphs
14reworded paragraphs
5,246 → 3,768words in section

New heading “Settlement Agreement”

New heading “Unwind, Termination and Share Exchange Agreement”

Removed heading “Acquisition of five preclinical drug candidate assets”

Removed heading “PHYX-001: Kv7.2/7.3 Agonist for Epilepsy and Mood Disorders”

Removed heading “PHYX-002: Cannabinoid-Based Therapeutics”

Removed heading “PHYX-003: Anti-Obesity Candidate”

Removed heading “PHYX-004: Cannabis Extract for Bladder Pain Syndrome / Interstitial Cystitis”

Removed heading “PHYX-005: Modified Stilbenoid Program for Central Nervous System (CNS) and Inflammatory Indications”

Removed heading “Change of Fiscal Year”

Removed heading “Corporate Restructuring”

Largest changes (selected automatically by length and topic keywords; quoted verbatim, no commentary)

Removed text topics: restructuring, workforce reduction
“In connection with the Restructuring Plan, the Board a terminated the employment of (i) Barrett Evans as Chief Executive Officer and President and (ii) Colin Stott as Chief Operating Officer, in each case effective immediately. Messrs. Evans and Stott remain members of the Company’s Board of Directors. Any severance or other compensatory agreements, if applicable, will be disclosed when determined. Workforce reductions also included the certain roles primarily associated with preclinical operations, regulatory affairs, and intellectual property functions.”
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Removed text topics: restructuring
“Corporate Restructuring”
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Removed text topics: china, israel
“PHYX-005 is an internally developed stilbenoid-based asset with potential applications in central nervous system and inflammatory conditions, including treatment-resistant seizures. The intellectual property portfolio supporting this program includes two patent families (PTX0001 and PTX0002). Patent family PTX0001 includes UK patent GB2609814, which provides composition-of-matter and medical use coverage extending until March 2041. …”
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Removed text
“PHYX-005: Modified Stilbenoid Program for Central Nervous System (CNS) and Inflammatory Indications”
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Removed text
“PHYX-004: Cannabis Extract for Bladder Pain Syndrome / Interstitial Cystitis”
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Removed text topics: fine
“In June 2024, the SEC declared effective a shelf registration statement filed by us. This shelf registration statement allows us to issue any combination of our common stock, preferred stock, debt securities, warrants, or units from time to time for an aggregate initial offering price of up to $100 million. In July 2021, we entered into an At Market Issuance Agreement, or the ATM Agreement, with B. Riley Securities, Inc. …”
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Full comparison: every changed paragraph (66)

Green = added, red = removed. Unchanged paragraphs, 1 paragraphs where only numbers/dates changed, and tables are not shown. Read the complete text in the original filing.

Reworded

This quarterly report on Form 10-Q contains forward-looking statements within the meaning of the federal securities laws and the Private Securities Litigation Reform Act of 1995. These forward-looking statements can be identified by the use of forward-looking terminology such as “may,” “will,” “expect,” “intend,” “anticipate,” “estimate,” “believe,” “continue,” “identify” or other similar words or the negatives thereof. These may include our financial estimates and their underlying assumptions, statements about plans, objectives, intentions and expectations. Such forward-looking statements are subject to various risks and uncertainties. Accordingly, there are or will be important factors that could cause actual outcomes or results to differ materially from those indicated in such statements. We believe these factors include but are not limited to those described under the section entitled “Risk Factors” in our prospectus and our Annual Report on form 10-K for the year ended DecemberMarch 31, 31, 2024,2026, and any such updated factors included in our periodic filings with the SEC, which are accessible on the SEC’s website at at www.sec.gov. These factors should not be construed as exhaustive and should be read in conjunction with the other cautionary statements that are included in this document (or our prospectus and other filings). Except as otherwise required by federal securities laws, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future developments or otherwise.

Added

Settlement Agreement

Added

On February 17, 2026, the Company entered into a Settlement Agreement (the “Settlement Agreement”) with Alterola Biotech Inc., EMC2 Capital LLC, and the former stockholders of Phytanix Bio (collectively, the “Former Phytanix Stockholders”), in connection with the litigation styled Protagenic Therapeutics, Inc. v. Alterola Biotech Inc., et al., Case No. 2025-1238-KMM, pending in the Court of Chancery of the State of Delaware (the “Litigation”).

Added

The Settlement Agreement provides for, among other things, the dismissal of the Litigation and the execution of an agreement to terminate, and unwind the transactions contemplated by, the Share Exchange Agreement dated May 15, 2025 (the “SEA”). Pursuant to the SEA, the Company had previously reverse merged with Phytanix Bio.

Added

Unwind, Termination and Share Exchange Agreement

Added

On February 17, 2026, the Company entered into an Unwind, Termination, and Share Exchange Agreement (the “Unwind Agreement”) with Phytanix Bio, Alterola Biotech Inc., EMC2 Capital LLC, the Former Phytanix Stockholders, and Colin Stott, as Sellers’ Representative. The Company, Phytanix Bio, Alterola Biotech Inc., EMC2 Capital LLC, the Former Phytanix Stockholders, and Sellers’ Representative are collectively referred to herein as the “Parties”. The closing of the unwind transactions (the “Closing”) occurred simultaneously with the execution of the Unwind Agreement on February 17, 2026.

Added

Pursuant to the Unwind Agreement:

Added

The Unwind Agreement also includes:

Added

The foregoing descriptions of the Settlement Agreement and the Unwind Agreement do not purport to be complete and are qualified in their entirety by reference to the full text of the Settlement Agreement and the Unwind Agreement, copies of which are filed as exhibits 10.1 and 10.2, respectively, to the Current Report on Form 8-K filed by the Company on February 17, 2026 and are incorporated herein by reference.

Removed

Acquisition of five preclinical drug candidate assets

Removed

As a result of the Exchange Agreement with Alterola Biotech Inc., (see Explanatory Note above), the company acquired five preclinical drug candidate assets and five new employees, all of whom were working for or affiliated with the Alterola subsidiary known as Phytanix Bio, Inc. The drug candidate assets expanded our pipeline into multiple therapeutic areas beyond the target markets of PT00114, supported by an intellectual property portfolio. The acquired drug candidate assets consist of the following programs:

Removed

PHYX-001: Kv7.2/7.3 Agonist for Epilepsy and Mood Disorders

Removed

PHYX-001 is an in-licensed Kv7.2/7.3 agonist (non-cannabinoid) epilepsy asset that shares the same mechanism of action as compounds currently in late-stage development, including BVH-7000 and XEN1101. These comparator molecules are in Phase 3 clinical trials for focal onset seizures (FOS), generalized tonic-clonic seizures (GTCS), and major depressive disorder (MDD). XEN1101 (Azetukalner) has demonstrated encouraging efficacy and safety in Phase 2 studies (French et al., 2023). The intellectual property covering PHYX-001 includes two patent families (PHB0001 and PHB0002) related to our platform of potassium channel modulators with coverage in epilepsy. Patent family PHB0001 includes a granted U.S. patent expiring in June 2037. Patent family PHB0002 includes a granted U.S. patent and a pending European application, which, if granted, would cover up to 39 countries and extend until December 2038. These protections provide a substantial runway for development, and additional analogs may be introduced into the pipeline to further expand this franchise.

Removed

PHYX-002: Cannabinoid-Based Therapeutics

Removed

PHYX-002 is an internally developed cannabinoid asset with the potential to address a wide range of therapeutic areas. The Company anticipates further intellectual property filings as this program advances, with the goal of developing a product with improved potency and lower dosing requirements compared to currently available cannabinoid medicines, including Epidiolex. Potential clinical indications span epilepsy, schizophrenia, autism spectrum disorder, anxiety, depression, and cardiovascular disorders. Because this program involves new proprietary molecules, we anticipate the possibility of restarting the intellectual property “clock,” which could extend the exclusivity horizons if composition-of-matter claims are obtained.

Removed

PHYX-003: Anti-Obesity Candidate

Removed

PHYX-003 is an internally developed preclinical asset targeting obesity. New intellectual property is being generated around this program, including potential composition-of-matter patents (which, if granted, would establish ownership of the underlying molecule), therapeutic use patents, synthetic route patents, and formulation patents.

Removed

The program is designed to potentially enhance weight-loss outcomes compared with current blockbuster therapies such as tirzepatide (Mounjaro/Zepbound) and semaglutide (Ozempic/Wegovy). Given the rapid growth and high level of unmet need in the global obesity market, PHYX-003 could represent a significant opportunity for the Company.

Removed

PHYX-004: Cannabis Extract for Bladder Pain Syndrome / Interstitial Cystitis

Removed

PHYX-004 is an internally developed cannabis-derived extract in preclinical development for the treatment of bladder pain syndrome / interstitial cystitis. Intellectual property is expected to be generated in several categories, including extraction methodology (process patents), extract composition, formulation, and therapeutic use claims. There is a significant unmet medical need in this indication, particularly due to limitations associated with the current standard of care, Elmiron. As such, PHYX-004 has the potential to address a patient population with few effective therapeutic options.

Removed

PHYX-005: Modified Stilbenoid Program for Central Nervous System (CNS) and Inflammatory Indications

Removed

PHYX-005 is an internally developed stilbenoid-based asset with potential applications in central nervous system and inflammatory conditions, including treatment-resistant seizures. The intellectual property portfolio supporting this program includes two patent families (PTX0001 and PTX0002). Patent family PTX0001 includes UK patent GB2609814, which provides composition-of-matter and medical use coverage extending until March 2041. Corresponding applications have been filed in Europe, Australia, Brazil, Canada, China, Israel, India, Japan, Republic of Korea, Mexico, the United States, South Africa, and the United Kingdom. Grants are anticipated shortly in the U.S., Europe, Australia, and Canada. The PTX0002 patent family remains pending and is expected to expand coverage through composition-of-matter and medical use filings. Collectively, these protections support a long-term platform around modified stilbenoids, complementing our cannabinoid-based portfolio.

Removed

In addition to the drug candidate assets, the Exchange Agreement brought two new senior level employees into the Company, (i) Barrett Evans as Chief Executive Officer and President and (ii) Colin Stott as Chief Operating Officer.

Removed

The acquisition of the five preclinical drug candidate assets via the Exchange Agreement meaningfully broadened our product pipeline across neurology, psychiatry, obesity, urology, and inflammation. Each program is supported by an emerging intellectual property estate designed to provide durable protection. While all five assets remain at the preclinical stage and carry the associated risks of early development, they present multiple strategic opportunities to address large markets with unmet medical need.

Removed

On January 22, 2025, Nasdaq provided a notice to the Company that the Company had not regained compliance with Rule 5550(a)(2) and is not eligible for a second 180 calendar day compliance period as the Company does not comply with the requirements for initial listing on The Nasdaq Capital Market. This notification is part of the ongoing discussions with the Nasdaq Hearings Panel (the “Panel”) regarding the Company’s listing status, and the Company included this matter in its presentation to the Panel on January 30, 2025.

Reworded

On January 22, 2025, Nasdaq provided a notice to the Company that the Company had not regained compliance with Rule 5550(a)(2) and is not eligible for a second 180 calendar day compliance period as the Company does not comply with the requirements for initial listing on The Nasdaq Capital Market. This notification is part of the ongoing discussions with the Nasdaq Hearings Panel (the “Panel”) regarding the Company’s listing status, and the Company included this matter in its presentation to the Panel on January 30, 2025.On February 19, 2025, the Company received a hearing panel decision from Nasdaq (Nasdaq Listing Qualifications Hearings Docket No. NQ 7072C-25) indicating that its provisional plan for regaining compliance with the Nasdaq listing requirements had been accepted. For continued listing on the Nasdaq Capital Market, the Company has until April 28, 2025 to: (1) demonstrate compliance with Nasdaq Rules 5550(a)(2) and 5550(b)(2), (2) file a public disclosure describing any transactions undertaken by the Company to increase its equity and provide an indication of its equity following those transactions, and (3) provide the Panel with an update on its fundraising plans and updated income projections for the next 12 months.

Reworded

As previously reported in the Company’s Notification of Late Filing on Form 12b-25 filed with the SEC on August 14, 2025 (the “Form 12b-25”), the Company was unable to file the Form 10-Q within the prescribed period without unreasonable effort or expense. The Company is working a restructuring plan and related accounting and disclosures. Such procedures are being completed with Audit Committee oversight and consultation with the Company’s external advisors. Subsequent to filing the Form 12b-25, the Company continued to dedicate significant resources to the completion of such procedures but was unable to file the Form 10-Q by August 19, 2025, the end of the extension period provided by the Form 12b-25.

Added

The Company’s common stock was delisted from the Nasdaq Capital Market effective January 5, 2026 and is currently quoted on the OTCQB under the symbol “PTIX.”

Added

The Company intends to take the necessary steps to regain compliance with Nasdaq’s listing rules as soon as practicable. However, there can be no assurance that the Company will be able regain compliance and be able to be listed on Nasdaq again.

Removed

The Company intends to take the necessary steps to regain compliance with Nasdaq’s listing rules as soon as practicable and currently expects to submit a plan of compliance with Nasdaq and/or file the Form 10-Q within the 60-day period granted by Nasdaq in the Notification Letter. However, there can be no assurance that a plan of compliance will be submitted within such period, the Form 10-Q will be filed within such period, Nasdaq will grant the Company an exception of up to 180 calendar days from the Form 10-Q’s due date, or that the Company will be able meet the continued listing requirements during any compliance period that may be granted by Nasdaq.

Removed

Change of Fiscal Year

Removed

On August 7, 2025, the Board approved a change in the Company’s fiscal year-end from December 31 to March 31, effective immediately. The Company has filed a transition report on Form 10-QT with the Securities and Exchange Commission for the transition period beginning April 1, 2025 and ending June 30, 2025.

Removed

Corporate Restructuring

Removed

On August 8, 2025, the Board of Directors (the “Board”) approved a focused restructuring plan (the “Restructuring Plan”) to transition to a virtual operating model and concentrate capital on the Company’s highest-priority clinical program(s). In approving the Restructuring Plan, the Board determined that a disciplined cost structure and a sharper focus on near-term value inflection are in the best interests of the Company and its stockholders.

Removed

Under the Restructuring Plan, the Company (i) temporarily suspended expenditures related to its preclinical programs described above and (ii) initiated a process to evaluate strategic alternatives for those programs, including partnerships and/or out-licensing, with the objective of advancing them with appropriate external funding while preserving cash for the Company’s lead clinical assets. By doing so, the Company reduced operating expenses, overhead, and headcount primarily associated with preclinical activities.

Removed

When fully implemented, the Restructuring Plan is expected to reduce annualized operating expenses by approximately $8 million. The Company expects to incur one-time charges in connection with the Restructuring Plan; however, because key actions remain in process, the Company cannot reasonably estimate the total amount or timing of such charges at this time and will provide an update in a subsequent filing once such amounts are estimable.

Removed

In connection with the Restructuring Plan, the Board a terminated the employment of (i) Barrett Evans as Chief Executive Officer and President and (ii) Colin Stott as Chief Operating Officer, in each case effective immediately. Messrs. Evans and Stott remain members of the Company’s Board of Directors. Any severance or other compensatory agreements, if applicable, will be disclosed when determined. Workforce reductions also included the certain roles primarily associated with preclinical operations, regulatory affairs, and intellectual property functions.

Removed

In total, the Restructuring Plan was designed to accomplish three things:

Removed

1. Clinical focus. The Company will allocate available resources to efficiently execute the ongoing Phase 2 clinical trial of PT00114 (peptide analogue), which the Company currently expects to complete in approximately 9 to 12 months, subject to enrollment and other customary factors.

Removed

2. Preclinical programs paused. All preclinical programs originated with former Phytanix Bio (PHYX-001, PHYX-002, PHYX-003, PHYX-004, and PHYX-005) were paused. The Company will actively pursue strategic alternatives, including partnerships or out-licensing, to advance these assets with appropriate funding while conserving cash. The Company expects to retain external consultant(s), as needed, with cumulative annual fees not anticipated to exceed $200,000, to provide subject-matter expertise in cannabinoid-related drug development.

Removed

3. Virtual operating model. The Company is transitioning to a virtual operating model to minimize cash burn while prioritizing its clinical-stage program.

Added

Below are the changes in operating expenses between the three months ended June 30, 2026 and 2025:

Added

The decrease in research and development expense is due the deconsolidation of Phytanix Bio in the fourth quarter of 2026, leading to the expense for the three months ended June 30, 2026 not containing any expenses from Phytanix Bio while the three months ended June 30, 2025 contains expense from both Protagenic and Phytanix Bio.

Removed

During the three months ended December 31, 2025, we incurred a loss from operations of $925,103 as compared to $401,401 for the three months ended December 31, 2024. The increase in the loss is primarily from an increase in legal fees of $187,087 to $220,184 for the three months ended December 31, 2025 from $33,097 for the three months ended December 31, 2024, an increase in general and administrative of $105,120 to $154,817 for the three months ended December 31, 2025 from $49,697 for the three months ended December 31, 2024, and an increase in salaries and wages of $78,170 to $120,489 for the three months ended December 31, 2025 from $42,319 for the three months ended December 31, 2024.

Removed

During the nine months ended December 31, 2025, we incurred a loss from operations of $4,383,379 as compared to $1,078,606 for the nine months ended December 31, 2024. The increase in the loss is primarily from an increase in research and development expense of $650,448 to $821,127 for the nine months ended December 31, 2025 from $170,679 for the nine months ended December 31, 2024, an increase in legal fees of $363,663 to $546,785 for the nine months ended December 31, 2025 from $183,122 for the nine months ended December 31, 2024, an increase in salaries and wages of $589,044 to $675,572 for the nine months ended December 31, 2025 from $86,528 for the nine months ended December 31, 2024, and an increase in bad debt of $1,136,038 to $1,136,038 for the nine months ended December 31, 2025 from $0 for the nine months ended December 31, 2024, due to the write-off of receivables generated when Phytanix advanced funds to Chain Bridge I, a special purpose acquisition company (SPAC) that was a party to an agreement to acquire Phytanix Bio that was terminated during the first half of 2025.

Removed

The increase in research and development expense is due to the low year-ago comparable figure of only $170,679, which was driven by the fact that the former Phytanix Bio, Inc., which was acquired by the Company in May 2025 but is being treated as the accounting acquirer and therefore solely responsible for the historical 2024 operating expenses, was conducting little or no drug development work in the nine months ended December 31, 2024 (as Phytanix Bio had only been incorporated in Nevada in 2024). By contrast, the combined company was conducting a level of R&D spending in the nine months ending December 31, 2025 that was commensurate with a Phase I clinical trial, which was in progress for the compound known as PT11004.

Reworded

The increasedecrease in general and administrative expenses is due to an increase in stock compensation due to option vesting. The increase in R&D expense is due to lower expenses related to our clinical trials and related expenses due to changes in the Company’s stage of research and development and change to the Company’s outsourced research partners. The increase in transaction fees is from our merger that occurred in May 2025. This increase has been the primary driver of our increased loss from operations for the nine months ended December 31, 2025 compared to the same period for 2024.

Added

On May 15, 2025, the Company entered into a reverse merger with Phytanix Bio and on February 17, 2026, an unwind of this merger. Due to this reverse merger, the Company presents the historical financial information of Phytanix Bio and only includes the financial information for Protagenic for the period after the reverse merger. The financial numbers for Phytanix Bio are consolidated only through the date of the unwind. (See Note 4) This limits comparability of the Company’s number between the periods presented.

Added

Below are the changes in other income and expenses between the three months ended June 30, 2026 and 2025:

Added

On May 15, 2025, the Company entered into a reverse merger with Phytanix Bio and on February 17, 2026, an unwind of this merger. Due to this reverse merger, the Company presents the historical financial information of Phytanix Bio and only includes the financial information for Protagenic for the period after the reverse merger. The financial numbers for Phytanix Bio are consolidated only through the date of the unwind. (See Note 4) This limits comparability of the Company’s number between the periods presented.

Reworded

Liquidity and GoingCapital ConcernResources

Added

Below are the changes in cashflow between the three months ended June 30, 2026 and 2025:

Removed

In June 2024, the SEC declared effective a shelf registration statement filed by us. This shelf registration statement allows us to issue any combination of our common stock, preferred stock, debt securities, warrants, or units from time to time for an aggregate initial offering price of up to $100 million. In July 2021, we entered into an At Market Issuance Agreement, or the ATM Agreement, with B. Riley Securities, Inc. and EF Hutton, division of Benchmark Investments, LLC, or the Sales Agents, under which we may issue and sell from time to time up to $10.0 million of our common stock through or to the Sales Agents, as agent or principal. Any sale of shares of our common stock under the Sales Agreement will be made under our shelf registration statement on Form S-3. Sales of our common stock under the Sales Agreement are made at market prices by any method that is deemed to be an “at the market offering” as defined in Rule 415(a)(4) under the Securities Act of 1933, as amended. The Company has sold approximately 800,000 shares under the ATM Agreement. Also, as the price of our stock has declined, the value of stock that can be sold under the ATM facility has declined. As of December 31, 2025, approximately $1.0 million of our common stock remained available for sale under the Sales Agreement.

Reworded

OperatingThe activities used $3,072,333 and $917,508 in cash for the nine months ended December 31, 2025 and 2024, respectively. The use of cash in operating activities during the ninethree months ended DecemberJune 31,30, 2025,2026, primarily comprised of $3,716,250$963,616 net loss, $343,399$67,012 in derivative expense, $326,937 in stock compensation expense, $583,880a $13,337 impairment in increaseintangible assets, a $110,478 decrease in notesprepaid payableexpenses and other current assets, from the acquisition of Phytanix Bio,and a $215,454$41,135 increase of accounts payable and accrued liabilities,expenses, which included payments to legal and accounting professionals, payments to consultants, and other administrative expenses, offset by $1,181,796 in change in derivative liabilities,.expenses.

Added

The use of cash in operating activities during the three months ended June 30, 2025, primarily comprised of $5,057,523 net loss, $343,399 in derivative expense, $2,133,599 in change in derivative liabilities, $125,127 in stock compensation expense, and a $521,770 increase of accounts payable and accrued liabilities, which included payments to legal and accounting professionals, payments to consultants, and other administrative expenses.

Added

There was no investing activities during the three months ended June 30, 2026.

Reworded

Investing activities provided $943,180 and ($1,280,279) by cash during the ninethree months ended DecemberJune 31,30, 2025 and 2024, respectively.2025. The cash provided by by investing activities was from cash received in the Phytanix Bio Acquisition.

Added

There was no financing activities during the three months ended June 30, 2026.

Reworded

FinancingThe activities provided $4,407,551 and $2,203,342 by cash during the nine months ended December 31, 2025 and 2024, respectively. The cash provided by financing activities during the ninethree months ended DecemberJune 31,30, 2025 is comprised of $583,878 in increase in notes payable from the acquisition of Phytanix Bio, $395,474 from sale of common stock, $3,949,730 $3,949,730 from exercise of warrants, and $62,347$77,756 from related party loans.

Added

On May 15, 2025, the Company entered into a reverse merger with Phytanix Bio and on February 17, 2026, an unwind of this merger. Due to this reverse merger, the Company presents the historical financial information of Phytanix Bio and only includes the financial information for Protagenic for the period after the reverse merger. The financial numbers for Phytanix Bio are consolidated only through the date of the unwind. (See Note 4) This limits comparability of the Company’s number between the periods presented.

Showing the first 60 of 66 changed paragraphs. The complete comparison will be part of Pro (coming soon). Meanwhile you can read the full text in the original filing.

PTIX insider buying and selling (Form 4)

Since 2026-04-11, insiders reported open-market purchases in 7 Form 4 filings (1 insider, 7 trade dates, 73,530 shares, about $30.7K) and open-market sales in 0 filings. Net open-market shares: 73,530 (purchases minus sales); net value about $30.7K.Totals add up every open-market (code P and S) line in those filings, using the prices reported in the filings. Awards, option exercises, tax withholding and gifts are listed below but not counted.

Trade dateInsiderTransactionSharesPriceValueOwned afterFiling
2026-08-21Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF
Open-market purchase 20,000$0.65 $13.0K73,533 SEC
2026-08-20Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF
Open-market purchase 16,634$0.59 $9.8K53,533 SEC
2026-08-19Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF
Open-market purchase 2,700$0.35 $94536,899 SEC
2026-08-11Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF
Open-market purchase 2,220$0.32 $71034,199 SEC
2026-08-06Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF
Open-market purchase 685$0.22 $15131,979 SEC
2026-08-05Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF
Open-market purchase 5,000$0.26 $1.3K31,294 SEC
2026-07-30Armen Garo H
Director, EXEC. CHAIR & PRINCIPAL OFF.
Open-market purchase 26,291$0.18 $4.7K26,291 SEC

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None of the 59 investors we track reported a position in their latest 13F.

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