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SOLIGENIX, INC.

For the period ended Sep 30, 2025. Filed Nov 7, 2025.

View on SEC.gov

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2025 · Filed Nov 7, 2025

SNGX$0.34+0.5%Stored close · as of Nov 6, 2026

What changed in Management’s Discussion and Analysis?

Read the current filing

Previous report: 10-Q

Period ended 2025-06-30; filed 2025-08-14.

0001558370-25-011554

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

Current report: 10-Q

Period ended 2025-09-30; filed 2025-11-07.

0001104659-25-108475

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The baseline is this issuer’s latest earlier reporting period of the same form that was filed before the current report. A previous 10-Q is a different quarter, not a year-over-year comparison. Amendments are excluded.

Compared 178 previous paragraphs and 185 current paragraphs.

139 unchanged; 28 reworded; 10 added; 5 removed; 6 previous and 8 current paragraphs rearranged.

Tables are not compared: 35 previous and 32 current tables excluded. Dates, whitespace, punctuation and numbering changes are ignored; changes to financial figures remain significant.

A changed paragraph is not evidence that risk increased or decreased. An unchanged paragraph does not establish that risk stayed the same.

Added paragraphs (10)

Current report

On August 15, 2025, we received notice (the “Notice”) from The Nasdaq Stock Market LLC (“Nasdaq”) advising us we were not in compliance with the minimum stockholders’ equity requirement for continued listing on The Nasdaq Capital Market. Nasdaq Listing Rule 5550(b)(1) requires companies listed on The Nasdaq Capital Market to maintain stockholders’ equity of at least $2,500,000 (the “Stockholders’ Equity Requirement”). In our Quarterly Report on Form 10-Q for the quarter ended June 30, 2025, we reported stockholders’ equity of $1,828,951, which was below the Stockholders’ Equity Requirement for continued listing. This amount did not reflect common stock sales on July 1, 2025, which generated total gross proceeds of approximately $1,439,300. Additionally, as of the date of the Notice, we did not meet either of the alternative Nasdaq continued listing standards under the Nasdaq Listing Rules, market value of listed securities of at least $35 million, or net income of $500,000 from continuing operations in the most recently completed fiscal year, or in two of the three most recently completed fiscal years.

Current report

The Notice had no immediate effect on the listing of our common stock and our common stock continues to trade on The Nasdaq Capital Market under the symbol “SNGX,” subject to our compliance with the other continued listing requirements.

Current report

We believe we have since regained compliance with the Stockholders’ Equity Requirement via acompleted public offering on September 29, 2025 with total gross proceeds to us of approximately $7.5 million before deducting commissions and other estimated offering expenses of approximately $560,000. This information was conveyed to Nasdaq within the 45 calendar days required pursuant to the Notice. As of September 30, 2025, we had stockholders’ equity of $7,597,976.

Current report

In October 2025, the first Data Monitoring Committee meeting for our confirmatory Phase 3 study evaluating HyBryte™ in the treatment of CTCL concluded that there were no safety concerns with the ongoing Phase 3 study and that HyBryte™ has an acceptable safety profile that remains consistent with the safety data from all prior clinical studies.

Current report

In September 2025, we announced a publication describing the extended stability of ebolavirus vaccines using our ThermoVax® platform. Bivalent and trivalent vaccines, constructed from antigens against Zaire ebolavirus, SUDV and MARV and the CoVaccine HT™ antigen, were formulated in a single vial and subjected to long-term storage at up to 40°C (104°F). After two years of storage, all vaccines were unchanged and had equivalent potency as when initially manufactured. In collaboration with Axel Lehrer, PhD, Professor at the Department of Tropical Medicine, Medical Microbiology and Pharmacology, John A. Burns School of Medicine, UH Manoa, the manuscript entitled*"Thermostable Bivalent & Trivalent Filovirus Vaccines from Insect Cells: Potency Demonstrated after 3 Months and 2 Years"*, has been accepted for publication and is available online in Vaccine.
Removed paragraphs (5)

Previous report

To alleviate the conditions that raise substantial doubt about our ability to continue as a going concern, our plans, as of June 30, 2025, include securing:

Previous report

There is no assurance that we will be successful in securing sufficient financing on acceptable terms, if at all, to continue operations, enter into strategic transactions that provide the necessary capital, or implement other strategies to mitigate the substantial doubt about our ability to continue as a going concern. If these alternatives are unavailable or not secured on satisfactory terms, we will not have sufficient cash resources or liquidity to fund our operations for at least 12 months after the financial statements are issued. Failure to obtain adequate capital when needed may force us to delay, reduce, or eliminate business development efforts, negatively impacting our ability to achieve our objectives, remain competitive, and maintain our financial condition and operating results. On July 1, 2025, we sold 772,900 shares of common stock pursuant to our ATM facility for total gross proceeds of approximately $1,429,100 and in doing so, as of July 1, 2025 we have no further capacity on our ATM facility.

Previous report

Additionally, macroeconomic and geopolitical uncertainties may further restrict access to capital, exacerbating liquidity challenges. Furthermore, concerns regarding our ability to continue as a going concern could negatively impact relationships with business partners, vendors, and other stakeholders.

Previous report

The accompanying financial statements have been prepared on a going concern basis, which contemplates the realization of assets and satisfaction of liabilities in the normal course of business, and do not include any adjustments relating to recoverability and classification of recorded asset amounts or the amounts and classification of liabilities that might be necessary should we be unable to continue as a going concern.

Previous report

In May 2025, we entered into an amendment of our lease for office space, resulting in the recognition of right-of-use assets and lease liabilities during the six months ended June 30, 2025 totaling $360,604. Pursuant to
Reworded paragraphs (28)

Previous wording

disease and our vaccine programs targeting filoviruses (such as Marburg and Ebola) and CiVax™, our vaccine candidate for the prevention of COVID-19 (caused by SARS-CoV-2). The development of our vaccine programs incorporates the use of our proprietary heat stabilization platform technology, known as ThermoVax®. To date, this business segment has been supported with government grant and contract funding from the National Institute of Allergy and Infectious Diseases (“NIAID”), the Biomedical Advanced Research and Development Authority, and the Defense Threat Reduction Agency.

Current wording

Our Public Health Solutions business segment includes development programs for RiVax®, our ricin toxin vaccine candidate and SGX943, our therapeutic candidate for antibiotic resistant and emerging infectious disease and our vaccine programs targeting filoviruses (such as Marburg and Ebola) and CiVax™, our vaccine candidate for the prevention of COVID-19 (caused by SARS-CoV-2). The development of our vaccine programs incorporates the use of our proprietary heat stabilization platform technology, known as ThermoVax®. To date, this business segment has been supported with government grant and contract funding from the National Institute of Allergy and Infectious Diseases (“NIAID”), the Biomedical Advanced Research and Development Authority, and the Defense Threat Reduction Agency.

Previous wording

Synthetic hypericin is one of the most efficient known generators of singlet oxygen, the key component for phototherapy. The generation of singlet oxygen induces necrosis and apoptosis in cells. The use of topical synthetic hypericin coupled with directed visible light results in generation of singlet oxygen only at the treated site. We believe that the use of visible light (as opposed to cancer-causing UV light) is a major advance in photodynamic therapy. In a small published Phase 1/2 proof of concept pilot clinical study using synthetic hypericin twice weekly for six weeks, statistically significant efficacy was demonstrated in patients with CTCL (58.3% response, p=0.04) and psoriasis (80% response, p<0.02). Subsequently, a published Phase 3 study in CTCL has further confirmed the biological efficacy of synthetic hypericin (termed HyBryte™ in the context of CTCL). A confirmatory, placebo-controlled study based upon an EMA-accepted protocol is enrolling with top-line results expected in the 2 nd half of 2026.

Current wording

Synthetic hypericin is one of the most efficient known generators of singlet oxygen, the key component for phototherapy. The generation of singlet oxygen induces necrosis and apoptosis in cells. The use of topical synthetic hypericin coupled with directed visible light results in generation of singlet oxygen only at the treated site. We believe that the use of visible light (as opposed to cancer-causing UV light) is a major advance in photodynamic therapy. In a small published Phase 1/2 proof of concept pilot clinical study using synthetic hypericin twice weekly for six weeks, statistically significant efficacy was demonstrated in patients with CTCL (58.3% response, p=0.04) and psoriasis (80% response, p<0.02). Subsequently, a published Phase 3 study in CTCL has further confirmed the biological efficacy of synthetic hypericin (termed HyBryte™ in the context of

Previous wording

In March 2024, we received agreement from the EMA on the key design components of a confirmatory Phase 3 placebo-controlled study evaluating the safety and efficacy of HyBryte™ in the treatment of CTCL patients with early-stage disease. This confirmatory 18-week study, expected to enroll approximately 80 patients across the U.S. and Europe, began patient enrollment in December 2024, with top-line results anticipated in the second half of 2026.

Current wording

In March 2024, we received agreement from the EMA on the key design components of a confirmatory Phase 3 placebo-controlled study evaluating the safety and efficacy of HyBryte™ in the treatment of CTCL patients with early-stage disease. This confirmatory 18-week study is expected to enroll approximately 80 patients across the U.S. and Europe.

Previous wording

In December 2024, we opened patient enrollment for our confirmatory Phase 3 study evaluating HyBryte™ (synthetic hypericin) in the treatment of CTCL.

Current wording

In December 2024, we opened patient enrollment for our confirmatory Phase 3 study evaluating HyBryte™ (synthetic hypericin) in the treatment of CTCL with top-line results anticipated in the second half of 2026.

Previous wording

CTCL mortality is related to stage of disease, with median survival generally ranging from about 12 years in the early stages to only 2.5 years when the disease has advanced. There is currently no FDA-approved drug for front-line treatment of early-stage CTCL. Treatment of early-stage disease generally involves skin-directed therapies. One of the most common unapproved therapies used for early-stage disease is oral 5 or 8-methoxypsoralen (“Psoralen”) given with ultraviolet A (“UVA”) light, referred to as PUVA, which is approved for dermatological conditions such as disabling psoriasis not adequately responsive to other forms of therapy,

Current wording

CTCL mortality is related to stage of disease, with median survival generally ranging from about 12 years in the early stages to only 2.5 years when the disease has advanced. There is currently no FDA-approved drug for front-line treatment of early-stage CTCL. Treatment of early-stage disease generally involves skin-directed therapies. One of the most common unapproved therapies used for early-stage disease is oral 5 or 8-methoxypsoralen (“Psoralen”) given with ultraviolet A (“UVA”) light, referred to as PUVA, which is approved for dermatological conditions such as disabling psoriasis not adequately responsive to other forms of therapy, idiopathic vitiligo and skin manifestations of CTCL in persons who have not been responsive to other forms of treatment. Psoralen is a mutagenic chemical that interferes with DNA causing mutations and other malignancies. Moreover, UVA is a carcinogenic light source that when combined with the Psoralen, results in serious adverse effects including secondary skin cancers; therefore, the FDA requires a Black Box warning for PUVA.

Previous wording

In June 2022, we received FDA IND clearance for our Phase 2a clinical trial (protocol number HPN-PSR-01) titled, "Phase 2 Study Evaluating SGX302 in the Treatment of Mild-to-Moderate Psoriasis." In December 2022, we initiated patient enrollment for the Phase 2a study (protocol number HPN-PSR-01) evaluating SGX302 in the treatment of mild-to-moderate psoriasis. The Phase 2a clinical trial (protocol number HPN-PSR-01) will target enrollment of up to 42 patients ages 18 years or older with mild to moderate, stable psoriasis covering 2 to 30% of the body. In both Parts A and B, all patients will apply the study drug twice per week and activate the drug with visible light 24 ± 6 hours later using the supplied visible light devices and according to the manufacturer's instructions. Patients will undergo treatments for a total of 18 weeks and, on completion, will be followed for a four-week follow-up period in which patients will not receive other psoriasis treatments. In Part A, five to ten patients will be assigned open-label SGX302 (0.25% hypericin) at the time of enrollment. Once the tolerability and response to SGX302 has been established, Part B of the protocol will commence. In Part B, patients will be randomized to double-blind treatment groups at a ratio 1:1 of active drug to placebo ointment. Active dermatologic assessment of treated lesions for adverse events will be performed immediately before and during light treatments. Patients will be assessed for overall disease status through four weeks of follow-up. Efficacy endpoints will include the extent of lesion clearance and patient reported quality of life indices. Routine safety data also will be collected.

Current wording

In June 2022, we received FDA IND clearance for our Phase 2a clinical trial (protocol number HPN-PSR-01) titled, "Phase 2 Study Evaluating SGX302 in the Treatment of Mild-to-Moderate Psoriasis." In December 2022, we initiated patient enrollment for the Phase 2a study (protocol number HPN-PSR-01) evaluating SGX302 in the treatment of mild-to-moderate psoriasis. The Phase 2a clinical trial (protocol number HPN-PSR-01) will target enrollment of up to 42 patients ages 18 years or older with mild to moderate, stable psoriasis covering 2 to 30% of the body. In both Parts A and B, all patients will apply the study drug twice per week and activate the drug with visible light 24 ± 6 hours later using the supplied visible light devices and according to the manufacturer's instructions. Patients will undergo treatments for a total of 18 weeks and, on completion, will be followed for a four-week follow-up period in which patients will not receive other psoriasis treatments. In Part A, five to ten patients will be assigned open-label SGX302 (0.25% hypericin) at the time of enrollment. Once the tolerability and response to SGX302 has been established, Part B of the protocol will commence. In Part B, patients will be randomized to double-blind treatment groups at a ratio 1:1 of active drug to placebo ointment. Active dermatologic assessment of treated lesions for adverse events will be performed immediately before and during light treatments. Patients will be assessed for overall disease status through four weeks of follow-

Previous wording

Clear” represented by an Investigator Global Assessment score of 1, which is considered the standard clinical measure for treatment success in psoriasis. In addition, the Psoriasis Activity and Severity Index score, another well-characterized measure of treatment success, for patients in Cohort 2 had a mean drop of approximately 50% over the 18-week treatment. SGX302 therapy was well tolerated by all patients with no drug related adverse events identified.

Current wording

In January 2024, positive preliminary results of clinical success were demonstrated in the Cohort 2 subjects enrolled in the ongoing Phase 2a study. In the four evaluable patients from Cohort 2 (one patient withdrew early in the treatment course for personal reasons unrelated to the study), two reached a disease status of “Almost Clear” represented by an Investigator Global Assessment score of 1, which is considered the standard clinical measure for treatment success in psoriasis. In addition, the Psoriasis Activity and Severity Index score, another well-characterized measure of treatment success, for patients in Cohort 2 had a mean drop of approximately 50% over the 18-week treatment. SGX302 therapy was well tolerated by all patients with no drug related adverse events identified.

Previous wording

Dusquetide (research name: SGX94) is an IDR that regulates the innate immune system to simultaneously reduce inflammation, eliminate infection and enhance tissue healing. Dusquetide is based on a new class of short, synthetic peptides known as IDRs. It has a novel mechanism of action in that it modulates the body’s reaction to both injury and infection and is both simultaneously anti-inflammatory and anti-infective. IDRs have no direct antibiotic activity but modulate host responses, increasing survival after infections with a broad range of bacterial Gram-negative and Gram-positive pathogens including both antibiotic sensitive and resistant strains, as well as accelerating resolution of tissue damage following exposure to a variety of agents including bacterial pathogens, trauma and chemo- or radiation-therapy. IDRs represent a novel approach to the control of infection and tissue damage via highly selective binding to an intracellular adaptor protein, sequestosome-1,

Current wording

reaction to both injury and infection and is both simultaneously anti-inflammatory and anti-infective. IDRs have no direct antibiotic activity but modulate host responses, increasing survival after infections with a broad range of bacterial Gram-negative and Gram-positive pathogens including both antibiotic sensitive and resistant strains, as well as accelerating resolution of tissue damage following exposure to a variety of agents including bacterial pathogens, trauma and chemo- or radiation-therapy. IDRs represent a novel approach to the control of infection and tissue damage via highly selective binding to an intracellular adaptor protein, sequestosome-1, also known as p62, which has a pivotal function in signal transduction during activation and control of the innate defense system. Preclinical data indicate that IDRs may be active in models of a wide range of therapeutic indications including life-threatening bacterial infections as well as the severe side-effects of chemo- and radiation-therapy. Additionally, due to selective binding to p62, dusquetide may have potential anti-tumor action.

Previous wording

SGX942 was found to be generally safe and well tolerated, consistent with the safety profile observed in the prior Phase 1 study conducted in 84 healthy volunteers. The long-term (12 month) follow-up data was consistent with the preliminary positive safety and efficacy findings. While the placebo population experienced the expected 12-month survival rate of approximately 80%, as defined in the Surveillance, Epidemiology, and End Results statistics 1975-2012 from the National Cancer Institute, the SGX942 1.5 mg/kg treatment group reported a 12-month survival rate of 93% (7% mortality in the SGX942 1.5 mg/kg group compared to 19% in the placebo group). Similarly, tumor resolution (complete response) at 12 months was better in the SGX942 1.5 mg/kg treatment group relative to the placebo population (80% in the 1.5 mg/kg group compared to 74% in the placebo group). The long-term follow-up results from the Phase 2 study are published in Biotechnology Reports.

Current wording

SGX942 was found to be generally safe and well tolerated, consistent with the safety profile observed in the prior Phase 1 study conducted in 84 healthy volunteers. The long-term (12 month) follow-up data was consistent with the preliminary positive safety and efficacy findings. While the placebo population experienced the expected 12-month survival rate of approximately 80%, as defined in the Surveillance, Epidemiology, and End Results statistics 1975-2012 from the National Cancer Institute, the SGX942 1.5 mg/kg treatment group reported a 12-month survival rate of 93% (7% mortality in the SGX942 1.5 mg/kg group compared to 19% in the placebo group). Similarly, tumor resolution (complete response) at 12 months was better in the SGX942 1.5 mg/kg treatment group relative to the placebo population (80% in the 1.5 mg/kg group compared to 74% in

Previous wording

aspects of development, product registration and commercialization in the territories, having access to data generated by us. In exchange for exclusive rights, SciClone will pay us royalties on net sales, and we will supply commercial drug product to SciClone on a cost-plus basis, while maintaining worldwide manufacturing rights.

Current wording

In September 2016, we and SciClone Pharmaceuticals, Inc. (“SciClone”) entered into an exclusive license agreement, pursuant to which we granted rights to SciClone to develop, promote, market, distribute and sell SGX942 in defined territories. Under the terms of the license agreement, SciClone will be responsible for all aspects of development, product registration and commercialization in the territories, having access to data generated by us. In exchange for exclusive rights, SciClone will pay us royalties on net sales, and we will supply commercial drug product to SciClone on a cost-plus basis, while maintaining worldwide manufacturing rights.

Previous wording

In July 2025, we announced completion of the Phase 2a proof of concept study evaluating SGX945 (dusquetide) in the treatment of BD and achievement of the study objective of demonstrating biological efficacy.

Current wording

In July 2025, we announced completion of the Phase 2a proof of concept study evaluating SGX945 (dusquetide) in the treatment of BD and achievement of the study objective of demonstrating safety and biological efficacy.

Previous wording

The value of ThermoVax® lies in its potential ability to eliminate the need for cold chain production, transportation, and storage for Alum-adjuvanted vaccines. This would relieve the high costs of producing and maintaining vaccines under refrigerated conditions. Based on historical reports from WHO and other scientific reports, we believe that a meaningful proportion of vaccine doses globally are wasted due to excursions from required cold chain temperature ranges. This is due to the fact that many vaccines need to be maintained either between 2 and 8 degrees Celsius (“C”), frozen below -20 degrees C, or frozen below -60 degrees C, and even brief excursions from these temperature ranges usually necessitate the destruction of the product or the initiation of costly stability programs specific for the vaccine lots in question. ThermoVax® has the potential to facilitate easier storage and distribution of strategic national stockpile vaccines for ricin exposure in emergency settings.

Current wording

The value of ThermoVax® lies in its potential ability to eliminate the need for cold chain production, transportation, and storage for Alum-adjuvanted vaccines. This would relieve the high costs of producing and maintaining vaccines under refrigerated conditions. Based on historical reports from WHO and other scientific reports, we believe that a meaningful proportion of vaccine doses globally are wasted due to excursions from required cold chain temperature ranges. This is due to the fact that many vaccines need to be maintained either

Previous wording

In September 2023, positive data demonstrated two-year stability of thermostabilized bivalent and trivalent filovirus vaccine candidates at temperatures of 40 degrees C (104 degrees F) when formulated in a single vial, needing reconstitution only with sterile water immediately prior to use. This important milestone is part of an ongoing collaboration with UH Manoa, demonstrating the successful presentation of one or more antigen(s) within the same formulation while maintaining full potency and thermostability. It further demonstrates the broad applicability of the heat stable vaccine platform, and its potential role in the U.S. government's initiative for pandemic preparedness.

Current wording

In September 2023, positive data demonstrated two-year stability of thermostabilized bivalent and trivalent filovirus vaccine candidates at temperatures of 40 degrees C (104 degrees F) when formulated in a single vial, needing reconstitution only with sterile water immediately prior to use. This important milestone is part of an ongoing collaboration with UH Manoa, demonstrating the successful presentation of one or more antigen(s)

Previous wording

RiVax® is our proprietary vaccine candidate being developed to protect against exposure to ricin toxin and if approved, would be the first ricin vaccine. The immunogen in RiVax® induces a protective immune response in animal models of ricin exposure and functionally active antibodies in humans. The immunogen consists of a genetically inactivated ricin A chain subunit that is enzymatically inactive and lacks residual toxicity of the holotoxin. RiVax® has demonstrated statistically significant (p < 0.0001) preclinical survival results, providing 100% protection against acute lethality in an aerosol exposure non-human primate model (Roy et al, 2015, Thermostable ricin vaccine protects rhesus macaques against aerosolized ricin: Epitope-specific neutralizing antibodies correlate with protection, PNAS USA 112:3782-3787), and has also been shown to be well tolerated and immunogenic in two Phase 1 clinical trials in healthy volunteers. Results of the first Phase 1 human trial of RiVax® established that the immunogen was safe and induced antibodies that we believe may protect humans from ricin exposure. The antibodies generated from vaccination, concentrated and purified, were capable of conferring immunity passively to recipient animals, indicating that the vaccine was capable of inducing functionally active antibodies in humans. The outcome of this study was published in the Proceedings of the National Academy of Sciences (Vitetta et al., 2006, A Pilot Clinical Trial of a Recombinant Ricin Vaccine in Normal Humans, PNAS, 103:2268-2273). The second trial that was completed in September 2012 and was sponsored by University of Texas Southwestern Medical Center (“UTSW”) evaluated a more potent formulation of RiVax® that contained an Alum adjuvant. The results of the Phase 1b study indicated that Alum-adjuvanted RiVax® was safe and well tolerated, and induced greater ricin neutralizing antibody levels in humans than adjuvant-free RiVax®. The outcomes of this second study were published in the Clinical and Vaccine Immunology.

Current wording

RiVax® is our proprietary vaccine candidate being developed to protect against exposure to ricin toxin and if approved, would be the first ricin vaccine. The immunogen in RiVax® induces a protective immune response in animal models of ricin exposure and functionally active antibodies in humans. The immunogen consists of a genetically inactivated ricin A chain subunit that is enzymatically inactive and lacks residual toxicity of the holotoxin. RiVax® has demonstrated statistically significant (p < 0.0001) preclinical survival results, providing 100% protection against acute lethality in an aerosol exposure non-human primate model (Roy et al, 2015, Thermostable ricin vaccine protects rhesus macaques against aerosolized ricin: Epitope-specific neutralizing antibodies correlate with protection, PNAS USA 112:3782-3787), and has also been shown to be well tolerated and immunogenic in two Phase 1 clinical trials in healthy volunteers. Results of the first Phase 1 human trial of RiVax® established that the immunogen was safe and induced antibodies that we believe may protect humans from ricin exposure. The antibodies generated from vaccination, concentrated and purified, were capable of

Previous wording

Three and Six Months Ended June 30, 2025 Compared to June 30, 2024

Current wording

Three and Nine Months Ended September 30, 2025 Compared to September 30, 2024

Previous wording

For the three months ended June 30, 2025, we had a net loss of $2,701,976 as compared to a net loss of $1,644,502 for the same prior year period, representing increased net loss of $1,057,474. This increase in net loss was primarily due to an increase in operating expenses related to ongoing clinical trials and a decrease in other income which was attributable to the change in the fair value of debt during the three months ended June 30, 2024 with no corresponding change in fair value during the three months ended June 30, 2025. For the six months ended June 30, 2025, we had a net loss of $5,653,244 as compared to a net loss of $3,559,829 for the same prior year period, representing increased net loss of $2,093,415. This increase in net loss was primarily due to an increase in operating expenses related to ongoing clinical trials and a decrease in other income which was attributable to the change in the fair value of debt during the six months ended June 30, 2024 with no corresponding change in fair value during the six months ended June 30, 2025.

Current wording

For the three months ended September 30, 2025, we had a net loss of $2,530,947 as compared to a net loss of $1,719,381 for the same prior year period, representing increased net loss of $811,566. This increase in net loss was primarily due to an increase in operating expenses related to ongoing clinical trials, a decrease in interest income and a CARES Act employee retention credit received during the three months ended September 30, 2024 with no corresponding employee retention credit received during the three months ended September 30, 2025. For the nine months ended September 30, 2025, we had a net loss of $8,184,191 as compared to a net loss of $5,279,210 for the same prior year period, representing increased net loss of $2,904,981. This increase in net loss was primarily due to an increase in operating expenses related to ongoing clinical trials and a decrease in other income which was attributable to the change in the fair value of debt during the nine months ended September 30, 2024 with no corresponding change in fair value during the nine months ended September 30, 2025.

Previous wording

Our revenues and associated costs incurred related to government subawards received to support the evaluation of HyBryte™ for expanded treatment in patients with early-stage CTCL. For the three months ended June 30, 2025, we had no revenue as compared to revenue of $2,342 for the same prior year period, representing a decrease in revenue of $2,342. We also incurred costs related to those revenues for the three months ended June 30, 2024 of $2,342. For the six months ended June 30, 2025, we had no revenue as compared to revenue of $119,371 for the same prior year period, representing a decrease in revenue of $119,371. We also incurred costs related to those revenues for the six months ended June 30, 2024 of $119,371.

Current wording

Our revenues and associated costs incurred related to government subawards received to support the evaluation of HyBryte™ for expanded treatment in patients with early-stage CTCL. We had no revenue or related costs for the three months ended September 30, 2025 and 2024, respectively. For the nine months ended September 30, 2025, we had no revenue as compared to revenue of $119,371 for the same prior year period, representing a decrease in revenue of $119,371. We also incurred costs related to those revenues for the nine months ended September 30, 2024 of $119,371.

Previous wording

Research and development expenses were $1,677,014 for the three months ended June 30, 2025 as compared to $501,158 for the same period in 2024, representing an increase of $1,175,856. The increase was primarily due to costs associated with our Phase 2 study in BD and the second confirmatory Phase 3 CTCL trial as well as increases in third-party manufacturing. Research and development expenses were $3,618,694 for the six months ended June 30, 2025 as compared to $1,596,198 for the same period in 2024, representing an increase of $2,022,496. The increase was primarily due to costs associated with our Phase 2 study in BD and the second confirmatory Phase 3 CTCL trial as well as increases in third-party manufacturing.

Current wording

Research and development expenses were $1,583,879 for the three months ended September 30, 2025 as compared to $968,689 for the same period in 2024, representing an increase of $615,190. The increase was primarily due to costs associated with our second confirmatory Phase 3 CTCL trial. Research and development expenses were $5,202,573 for the nine months ended September 30, 2025 as compared to $2,564,887 for the same period in 2024, representing an increase of $2,637,686. The increase was primarily due to costs associated with our Phase 2 study in BD and the second confirmatory Phase 3 CTCL trial as well as increases in third-party manufacturing.

Previous wording

General and administrative expenses were $1,086,865 for the three months ended June 30, 2025, as compared to $1,243,517 for the same period in 2024, representing a decrease of $156,652. The decrease in general and administrative expenses for the three months ended June 30, 2025 was primarily attributable to decreases in professional fees offset by increases in various taxes. General and administrative expenses were $2,171,693 for the six months ended June 30, 2025, as compared to $2,265,568 for the same period in 2024, representing a decrease of $93,875. The decrease in general and administrative expenses for the six months ended June 30, 2025 was primarily attributable to decreases in professional fees offset by increases in various taxes.

Current wording

General and administrative expenses were $996,604 for the three months ended September 30, 2025, as compared to $896,547 for the same period in 2024, representing an increase of $100,057. The increase in general and administrative expenses for the three months ended September 30, 2025 was primarily attributable to increases in professional fees, various taxes and stock related expenses. General and administrative expenses were $3,168,297 for the nine months ended September 30, 2025, as compared to $3,162,115 for the same period in 2024, representing an increase of $6,182. The increase in general and administrative expenses for the nine months ended September 30, 2025 was primarily attributable to increases in various taxes and stock related expenses offset by a decrease in professional fees.

Previous wording

Interest income, net for the three months ended June 30, 2025 was $69,823 as compared to $35,925 for the same period in 2024, representing an increase of $33,898. The increase is primarily associated with a reduction in interest expense resulting from repayment of convertible debt. Interest income, net for the six months ended June 30, 2025 was $145,851 as compared to $64,767 for the same period in 2024, representing an increase of $81,084. The increase is primarily associated with a reduction in interest expense resulting from repayment of convertible debt.

Current wording

Interest income, net for the three months ended September 30, 2025 was $52,351 as compared to $78,836 for the same period in 2024, representing a decrease of $26,485. The decrease is primarily associated with lower cash balances prior to completing a public offering on September 29, 2025. Interest income, net for the nine months ended September 30, 2025 was $198,202 as compared to $143,603 for the same period in 2024, representing an increase of $54,599. The increase is primarily associated with a reduction in interest expense resulting from repayment of convertible debt.

Previous wording

$1,691,345 as compared to working capital of $3,980,218 as of December 31, 2024, representing a decrease of $2,288,873. The decrease in cash and cash equivalents was primarily related to cash used in operating activities and repayment of convertible debt offset by cash received from financing activities during the six months ended June 30, 2025.

Current wording

As of September 30, 2025, we had cash and cash equivalents of $10,525,335 as compared to $7,819,514 as of December 31, 2024, representing an increase of $2,705,821. As of September 30, 2025, we had working capital of $7,458,892 as compared to working capital of $3,980,218 as of December 31, 2024, representing an increase of $3,478,674. The increase in cash and cash equivalents was primarily related to cash received from a public offering completed on September 29, 2025 offset by cash used in operating activities and repayment of convertible debt during the nine months ended September 30, 2025.

Previous wording

Based on our operating budget, current rate of cash outflows, cash on hand, and proceeds from government contract and grant programs, we believe that we have sufficient resources to support development activities, business operations, and meet our obligations through the first quarter of 2026. However, as of the date of filing this Quarterly Report on Form 10-Q, we do not have sufficient cash and cash equivalents to fund operations for at least 12 months following the issuance of these financial statements. These factors raise substantial doubt about our ability to continue as a going concern.

Current wording

Based on our operating budget, current rate of cash outflows, and cash on hand, we believe we have sufficient resources to support development activities, business operations, and meet our obligations for at least the next twelve months from issuance of these financial statements in this Quarterly Report on Form 10-Q.

Previous wording

Under our budget and based upon our existing product development agreements and license agreements, we expect our total research and development expenditures for the next 12 months to be approximately $4.8 million before any contract or grant reimbursements, all of which relates to the Specialized BioTherapeutics business segment. We do not anticipate any contract and grant reimbursements revenue in the next 12 months to offset research and development expenses in the Specialized BioTherapeutics business segment.

Current wording

Under our budget and based upon our existing product development agreements and license agreements, we expect our total research and development expenditures for the next 12 months to be approximately $3.8 million before any contract or grant reimbursements, all of which relates to the Specialized BioTherapeutics business segment. We do not anticipate any contract and grant reimbursements revenue in the next 12 months to offset research and development expenses in the Specialized BioTherapeutics business segment.

Previous wording

The table below details our costs for research and development by program and amounts reimbursed for the six months ended June 30, 2025 and 2024:

Current wording

The table below details our costs for research and development by program and amounts reimbursed for the nine months ended September 30, 2025 and 2024:

Previous wording

We have commitments of approximately $230,000 as of June 30, 2025 over the next five years for several licensing agreements with partners and universities. Additionally, we are party to other agreements which include cash milestone payments, royalties and other fees payable, which are all contingent upon clinical or commercialization success. There can be no assurance that clinical or commercialization success will occur.

Current wording

We have commitments of approximately $205,000 as of September 30, 2025 over the next five years for several licensing agreements with partners and universities. Additionally, we are party to other agreements which include cash milestone payments, royalties and other fees payable, which are all contingent upon clinical or commercialization success. There can be no assurance that clinical or commercialization success will occur.

Previous wording

Provided the sole remaining future success-oriented milestone of FDA approval is attained, we will be required to make an additional payment of $5 million, if and when achieved. Such payment will be payable in our restricted securities provided such number of shares does not exceed 19.9% ownership of our outstanding stock. As of June 30, 2025, no other milestone or royalty payments have been paid or accrued.

Current wording

Pursuant to an agreement with Hy Biopharma, we are obligated to pay Hy Biopharma a success-oriented milestone of $5 million in the event FDA approval is attained. Such payment will be payable in our restricted securities provided such number of shares does not exceed 19.9% ownership of our outstanding stock. As of September 30, 2025, no other milestone or royalty payments have been paid or accrued.

Previous wording

the amendment, the lease has been extended through October 2028. The current rent is $11,625 per month through October 2026. It increases to $11,883 in November 2026 and to $12,142 in November 2027 where it remains until expiration.

Current wording

Pursuant to an amendment in May 2025, our lease for office space has been extended through October 2028. The current rent is $11,625 per month through October 2026. It increases to $11,883 in November 2026 and to $12,142 in November 2027 where it remains until expiration.

Previous wording

The 2023 Amendment resulted in the extinguishment of the original convertible debt for accounting purposes. We elected to account for the amended convertible debt using the fair value option. As a result, we recognized $260,933 of other income from the change in the fair value of the convertible debt in our accompanying condensed consolidated statements of operations during the six months ended June 30, 2024. The fair value of the convertible debt was estimated using the Monte Carlo valuation method.

Current wording

The 2023 Amendment resulted in the extinguishment of the original convertible debt for accounting purposes. We elected to account for the amended convertible debt using the fair value option. As a result, we recognized $260,933 of other income from the change in the fair value of the convertible debt in our accompanying condensed consolidated statements of operations during the nine months ended September 30, 2024. The fair value of the convertible debt was estimated using the Monte Carlo valuation method.
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Current report — wording carried from elsewhere

CTCL). A confirmatory, placebo-controlled study based upon an EMA-accepted protocol is enrolling with top-line results expected in the 2 nd half of 2026.

Current report — wording carried from elsewhere

up. Efficacy endpoints will include the extent of lesion clearance and patient reported quality of life indices. Routine safety data also will be collected.

Current report — wording carried from elsewhere

Dusquetide (research name: SGX94) is an IDR that regulates the innate immune system to simultaneously reduce inflammation, eliminate infection and enhance tissue healing. Dusquetide is based on a new class of short, synthetic peptides known as IDRs. It has a novel mechanism of action in that it modulates the body’s

Current report — wording carried from elsewhere

the placebo group). The long-term follow-up results from the Phase 2 study are published in Biotechnology Reports.

Current report — wording carried from elsewhere

In August 2025, we received orphan drug designation from the FDA for the active ingredient in SGX945 (dusquetide) in the treatment of BD.

Current report — wording carried from elsewhere

between 2 and 8 degrees Celsius (“C”), frozen below -20 degrees C, or frozen below -60 degrees C, and even brief excursions from these temperature ranges usually necessitate the destruction of the product or the initiation of costly stability programs specific for the vaccine lots in question. ThermoVax® has the potential to facilitate easier storage and distribution of strategic national stockpile vaccines for ricin exposure in emergency settings.

Current report — wording carried from elsewhere

within the same formulation while maintaining full potency and thermostability. It further demonstrates the broad applicability of the heat stable vaccine platform, and its potential role in the U.S. government's initiative for pandemic preparedness.

Current report — wording carried from elsewhere

conferring immunity passively to recipient animals, indicating that the vaccine was capable of inducing functionally active antibodies in humans. The outcome of this study was published in the Proceedings of the National Academy of Sciences (Vitetta et al., 2006, A Pilot Clinical Trial of a Recombinant Ricin Vaccine in Normal Humans, PNAS, 103:2268-2273). The second trial that was completed in September 2012 and was sponsored by University of Texas Southwestern Medical Center (“UTSW”) evaluated a more potent formulation of RiVax® that contained an Alum adjuvant. The results of the Phase 1b study indicated that Alum-adjuvanted RiVax® was safe and well tolerated, and induced greater ricin neutralizing antibody levels in humans than adjuvant-free RiVax®. The outcomes of this second study were published in the Clinical and Vaccine Immunology.
Rearranged previous paragraphs (6)

Previous report — wording carried elsewhere

Our Public Health Solutions business segment includes development programs for RiVax®, our ricin toxin vaccine candidate and SGX943, our therapeutic candidate for antibiotic resistant and emerging infectious

Previous report — wording carried elsewhere

idiopathic vitiligo and skin manifestations of CTCL in persons who have not been responsive to other forms of treatment. Psoralen is a mutagenic chemical that interferes with DNA causing mutations and other malignancies. Moreover, UVA is a carcinogenic light source that when combined with the Psoralen, results in serious adverse effects including secondary skin cancers; therefore, the FDA requires a Black Box warning for PUVA.

Previous report — wording carried elsewhere

In January 2024, positive preliminary results of clinical success were demonstrated in the Cohort 2 subjects enrolled in the ongoing Phase 2a study. In the four evaluable patients from Cohort 2 (one patient withdrew early in the treatment course for personal reasons unrelated to the study), two reached a disease status of “Almost

Previous report — wording carried elsewhere

also known as p62, which has a pivotal function in signal transduction during activation and control of the innate defense system. Preclinical data indicate that IDRs may be active in models of a wide range of therapeutic indications including life-threatening bacterial infections as well as the severe side-effects of chemo- and radiation-therapy. Additionally, due to selective binding to p62, dusquetide may have potential anti-tumor action.

Previous report — wording carried elsewhere

In September 2016, we and SciClone Pharmaceuticals, Inc. (“SciClone”) entered into an exclusive license agreement, pursuant to which we granted rights to SciClone to develop, promote, market, distribute and sell SGX942 in defined territories. Under the terms of the license agreement, SciClone will be responsible for all

Previous report — wording carried elsewhere

As of June 30, 2025, we had cash and cash equivalents of $5,097,670 as compared to $7,819,514 as of December 31, 2024, representing a decrease of $2,721,844. As of June 30, 2025, we had working capital of