SOLIGENIX, INC.

Previous wording

The following discussion and analysis provides information to explain our results of operations and financial condition. You should also read our unaudited condensed consolidated interim financial statements and their notes included in this Form 10-Q, and our audited consolidated financial statements and their notes, Risk Factors and other information included in our Annual Report on Form 10-K for the year ended December 31, 2024. We provide addresses to internet sites solely for the information to investors. We do not intend any addresses to be active links or to otherwise incorporate the contents of any website into this report.

Current wording

The following discussion and analysis provides information to explain our results of operations and financial condition. You should also read our unaudited condensed consolidated interim financial statements and their notes included in this Form 10-Q, and our audited consolidated financial statements and their notes, Risk Factors and other information included in our Annual Report on Form 10-K for the year ended December 31, 2024 and in our other periodic reports on Form 10-Q and Form 8-K. We provide addresses to internet sites solely for the information to investors. We do not intend any addresses to be active links or to otherwise incorporate the contents of any website into this report.

Previous 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

Current 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.

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 US 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, 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.

Previous wording

In September 2024, the European Patent Office granted the patent entitled "Systems and Methods for Producing Synthetic Hypericin". The newly issued patent's claims are directed to a novel, highly purified form of synthetic hypericin manufactured through a unique proprietary process. Synthetic hypericin is the active pharmaceutical ingredient in HyBryte™, our photodynamic therapy for the treatment of CTCL, set to initiate a confirmatory Phase 3 clinical trial before the end of the year. This new European granted patent (EP3423428) is a related patent to US Pat. No. 10,053,413, previously issued in the U.S. Both patents are expected to expire in 2036, and form part of a larger patent family, including previously granted U.S. patents covering methods of use (US Pat. No. 7,122,518) and methods of synthesis (US Pat. No. 8,629,302), as well as other granted patents throughout the world.

Current wording

In September 2024, the European Patent Office granted the patent entitled "Systems and Methods for Producing Synthetic Hypericin". The newly issued patent's claims are directed to a novel, highly purified form of synthetic hypericin manufactured through a unique proprietary process. Synthetic hypericin is the active pharmaceutical ingredient in HyBryte™, our photodynamic therapy for the treatment of CTCL, set to initiate a confirmatory Phase 3 clinical trial before the end of the year. This new European granted patent (EP3423428) is a related patent to U.S. Pat. No. 10,053,413, previously issued in the U.S. Both patents are expected to expire in 2036, and form part of a larger patent family, including previously granted U.S. patents covering methods of use (U.S. Pat. No. 7,122,518) and methods of synthesis (U.S. Pat. No. 8,629,302), as well as other granted patents throughout the world.

Previous wording

In October 2024, the Hong Kong Patent Office granted the patent entitled "Systems and Methods for Producing Synthetic Hypericin". The newly issued patent's claims are directed to a novel, highly purified form of synthetic hypericin manufactured through a unique proprietary process. Synthetic hypericin is the active pharmaceutical ingredient in HyBryte™, our photodynamic therapy for the treatment of CTCL, for which a confirmatory Phase 3 clinical trial has been initiated. This new granted patent (HK1260757) is a related patent to US Pat. Nos. 10,053,413 and 10,526,268, previously issued in the U.S., and is in the same family as another patent granted in Europe. These patents are expected to expire in 2036, and form part of a larger collection of different patent families, including previously granted foreign patents covering liquid formulations and methods of use (EP Pat. No. 2,571,507) and issued U.S. patents for methods of synthesis (US Pat. No. 8,629,302), as well as other granted patents throughout the world.

Current wording

In October 2024, the Hong Kong Patent Office granted the patent entitled "Systems and Methods for Producing Synthetic Hypericin". The newly issued patent's claims are directed to a novel, highly purified form of synthetic hypericin manufactured through a unique proprietary process. Synthetic hypericin is the active pharmaceutical ingredient in HyBryte™, our photodynamic therapy for the treatment of CTCL, for which a confirmatory Phase 3 clinical trial has been initiated. This new granted patent (HK1260757) is a related patent to U.S. Pat. Nos. 10,053,413 and 10,526,268, previously issued in the U.S., and is in the same family as another patent granted in Europe. These patents are expected to expire in 2036, and form part of a larger collection of different patent families, including previously granted foreign patents covering liquid formulations and methods of use (EP Pat. No. 2,571,507) and issued U.S. patents for methods of synthesis (U.S. Pat. No. 8,629,302), as well as other granted patents throughout the world.

Previous wording

In April 2025, we announced interim results from the ongoing open-label, IIS evaluating extended HyBryte™ treatment for up to 54 weeks in patients with early-stage CTCL. Following 18 weeks of treatment, 75% of patients achieved "Treatment Success," reinforcing HyBryte™ as a potentially safe and fast-acting therapy for this chronic and underserved cancer. To date, nine patients have been enrolled and treated with HyBryte™ over a time period of up to 54 weeks in the IIS, with all data for the Week 18 timepoint now complete. Consistent with the Phase 3 trials, Treatment Success is predefined as a greater than or equal to 50% improvement in the cumulative mCAILS score compared to Baseline. Of the eight patients who could be evaluated through Week 18, six (75%) had a Treatment Success. The 18-week treatment window is the same window that is being evaluated in the FLASH2 double-blind, placebo-controlled, randomized study that is currently enrolling patients. This rapid response is a distinct advantage of HyBryte™ therapy, with many other therapies used in CTCL taking up to six to 12 months to generate a clinically meaningful treatment response. Of these eight evaluable patients through Week 18, four have gone on to complete the 54-week treatment with an average maximum improvement in mCAILS score of 85%, three are still on treatment and one dropped out (due to logistical issues). HyBryte™ appears to be safe and well tolerated in all patients. The trial is sponsored by Ellen Kim, MD, Director, Penn Cutaneous Lymphoma Program, Vice Chair of Clinical Operations, Dermatology Department, and Professor of Dermatology at the Hospital of the University of Pennsylvania who was a leading enroller in the Phase 3 FLASH study for the treatment of early-stage CTCL.

Current wording

In April 2025, we announced positive interim results from the ongoing open-label, IIS evaluating extended HyBryte™ treatment for up to 54 weeks in patients with early-stage CTCL. Following 18 weeks of treatment, 75% of patients achieved "Treatment Success," reinforcing HyBryte™ as a potentially safe and fast-acting therapy for this chronic and underserved cancer. To date, nine patients have been enrolled and treated with HyBryte™ over a time period of up to 54 weeks in the IIS, with all data for the Week 18 timepoint now complete. Consistent with the Phase 3 trials, Treatment Success is predefined as a greater than or equal to 50% improvement in the cumulative mCAILS score compared to Baseline. Of the eight patients who could be evaluated through Week 18, six (75%) had a Treatment Success. The 18-week treatment window is the same window that is being evaluated in the FLASH2 double-blind, placebo-controlled, randomized study that is currently enrolling patients. This rapid response is a distinct advantage of HyBryte™ therapy, with many other therapies used in CTCL taking up to six to 12 months to generate a clinically meaningful treatment response. Of these eight evaluable patients through Week 18, four have gone on to complete the 54-week treatment with an average maximum improvement in mCAILS score of 85%, three are still on treatment and one dropped out (due to logistical issues). HyBryte™ appears to be safe and well tolerated in all patients. The trial is sponsored by Ellen Kim, MD, Director, Penn Cutaneous Lymphoma Program, Vice Chair of Clinical Operations, Dermatology Department, and Professor of Dermatology at the Hospital of the University of Pennsylvania who was a leading enroller in the Phase 3 FLASH study for the treatment of early-stage CTCL.

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, 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.

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,

Previous 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.

Current 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.

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, 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.

Current 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,

Previous 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.

Current 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.

Previous wording

In November 2023, the FDA cleared the IND application for a Phase 2a clinical trial entitled, “Pilot Study of SGX945 (Dusquetide) in the Treatment of Aphthous Ulcers in Behçet’s Disease.” The study is designed to evaluate the safety and potential efficacy of SGX945 (dusquetide) in the resolution of aphthous flares in BD and is expected to begin patient enrollment in the second half of 2024.

Current wording

In November 2023, the FDA cleared the IND application for a Phase 2a clinical trial entitled, “Pilot Study of SGX945 (Dusquetide) in the Treatment of Aphthous Ulcers in Behçet’s Disease.” The study is designed to evaluate the safety and potential efficacy of SGX945 (dusquetide) in the resolution of aphthous flares in BD.

Previous wording

As a new chemical entity, an FDA approved RiVax® vaccine has the potential to qualify for a biodefense Priority Review Voucher (“PRV”). Approved under the 21st Century Cures Act in late 2016, the biodefense PRV is awarded upon approval as a medical countermeasure when the active ingredient(s) have not been otherwise approved for use in any context. PRVs are transferable and can be sold, with sales in recent years of approximately $100 million. When redeemed, PRVs entitle the user to an accelerated review period of nine months, saving a median of seven months review time as calculated in 2009. However, FDA must be advised 90 days in advance of the use of the PRV and the use of a PRV is associated with an additional user fee (approximately $2.5 million for fiscal year 2025).

Current wording

As a new chemical entity, an FDA approved RiVax® vaccine has the potential to qualify for a biodefense Priority Review Voucher (“PRV”). Approved under the 21st Century Cures Act in late 2016, the biodefense PRV is awarded upon approval as a medical countermeasure when the active ingredient(s) have not been otherwise approved for use in any context. PRVs are transferable and can be sold, with sales in recent years of approximately $100 million. When redeemed, PRVs entitle the user to an accelerated review period of nine months, saving a median of seven months review time as calculated in 2009. However, FDA must be advised 90 days in advance of the use of the PRV and the use of a PRV is associated with an additional user fee ($2.50 million for fiscal year 2025).

Previous wording

Three Months Ended March 31, 2025 Compared to March 31, 2024

Current wording

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

Previous wording

For the three months ended March 31, 2025, we had a net loss of $3,236,763 as compared to a net loss of $1,915,327 for the same prior year period, representing increased net loss of $1,321,436. 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 March 31, 2024 with no corresponding change in fair value during the three months ended March 31, 2025.

Current 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.

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 March 31, 2025 we had no revenue as compared to revenue of $117,029 for the same prior year period, representing a decrease of $117,029. We also incurred costs related to those revenues for the three months ended March 31, 2024 of $117,029.

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. 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.

Previous wording

Research and development expenses were $2,227,175 for the three months ended March 31, 2025 as compared to $1,095,040 for the same period in 2024, representing an increase of $1,132,135. 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 $1,677,014 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.

Previous wording

General and administrative expenses were $1,084,828 for the three months ended March 31, 2025, as compared to $1,022,051 for the same period in 2024, representing an increase of $62,777. The increase in general and administrative expenses for the three months ended March 31, 2025 was primarily attributable to increases in professional fees and various taxes.

Current 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.

Previous wording

Interest income, net for the three months ended March 31, 2025 was $76,028 as compared to $28,842 for the same period in 2024, representing an increase of $47,186. 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 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.

Previous wording

As of March 31, 2025, we had cash and cash equivalents of $7,297,171 as compared to $7,819,514 as of December 31, 2024, representing a decrease of $522,343. As of March 31, 2025, we had working capital of $3,507,060 as compared to working capital of $3,980,218 as of December 31, 2024, representing a decrease of $473,158. 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 three months ended March 31, 2025.

Current 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.

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 fourth quarter of 2025. 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, 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.

Previous wording

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

Current wording

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 wording

Other than the AGP Sales Agreement, which was entered into on August 16, 2024, none of these alternatives are currently committed. There is no assurance that we will obtain sufficient funding 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. Additionally, market instability, including geopolitical factors, may limit our access to capital, further straining our liquidity and ability to continue as a going concern. The perception of financial instability may also deter potential business partners due to concerns about our ability to fulfill contractual obligations.

Current wording

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 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 $6 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 $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.

Previous wording

The table below details our costs for research and development by program and amounts reimbursed for the three months ended March 31, 2025 and 2024:

Current 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:

Previous wording

In December 2020, we entered into a $20 million convertible debt financing agreement with Pontifax (the “Loan Agreement”). Under the terms of the Loan Agreement, we had access to up to $20 million in convertible debt financing in three tranches, which will mature on June 15, 2025 and had an interest-only period for the first two years with a fixed interest rate of 8.47% on borrowed amounts and an interest rate of 1% on amounts available but not borrowed as an unused line of credit fee. After the interest-only period, the outstanding principal was to be repaid in quarterly payments of $1 million each commencing in the first quarter of 2023. The agreement is secured by a lien on substantially all of our assets, other than intellectual property.

Current wording

In December 2020, we entered into a $20 million convertible debt financing agreement with Pontifax (the “Loan Agreement”). Under the terms of the Loan Agreement, we had access to up to $20 million in convertible debt financing which accrued interest at a rate of 8.47% on borrowed amounts and an interest rate of 1% on amounts available but not borrowed as an unused line of credit fee. Payments of interest only were due for the first two years and thereafter, the outstanding principal was to be repaid in quarterly installments, as defined.

Previous wording

In April 2023, we entered into an amendment to the Loan Agreement (the “2023 Amendment”). The 2023 Amendment called for the immediate payment of $5 million of the outstanding principal balance and any accrued interest, waived any prepayment charge in connection with the repayment of this amount and resulted in an outstanding principal balance of $3 million. The 2023 Amendment also provided for interest only through June 30, 2024, reduced quarterly principal repayments to $750,000, and eliminated the minimum cash covenant. Further, the 2023 Amendment reduced the conversion price with respect to the remaining principal amount to (i) 90% of the closing price of our common stock on the day before the delivery of a conversion notice with respect to the first 36,790 shares of our common stock issuable upon conversion and to (ii) $27.20 with respect to all shares of our common stock issuable upon conversion thereafter. The remaining terms of the agreement remained unmodified.

Current wording

In April 2023, we entered into an amendment to the Loan Agreement (the “2023 Amendment”). The 2023 Amendment called for the immediate payment of $5 million of the outstanding principal balance and any accrued interest, waived any prepayment charge in connection with the repayment of this amount and resulted in an outstanding principal balance of $3 million. The 2023 Amendment adjusted certain payment provisions, and provided for an adjustment to the conversion price provisions with respect to the remaining principal amount to (i) 90% of the closing price of our common stock on the day before the delivery of a conversion notice with respect to the first 36,790 shares of our common stock issuable upon conversion and to (ii) $27.20 with respect to all shares of our common stock issuable upon conversion thereafter.

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 $0 and $165,382 of other income from the change in the fair value of the convertible debt in our accompanying condensed consolidated statements of operations during the three months ended March 31, 2025 and 2024, respectively. 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 six months ended June 30, 2024. The fair value of the convertible debt was estimated using the Monte Carlo valuation method.

Previous wording

On January 3, 2024, Pontifax delivered a conversion notice to us electing to convert a portion of the remaining principal balance into shares of our common stock. Upon conversion, we issued 9,139 shares of our common stock at $10.88 per share, reducing the remaining principal balance by $99,416.

Current wording

During the six months ended June 30, 2024, Pontifax delivered to us notices of conversion electing to convert a portion of the then outstanding principal balance into shares of our common stock. Accordingly, we issued 36,790 shares of our common stock resulting in a reduction of the outstanding principal balance totaling $254,256.

Previous wording

In October 2024, we entered into an amendment (the “2024 Amendment”) to the Loan Agreement, as amended. The 2024 Amendment reduced the conversion price with respect to the remaining principal amount outstanding to (i) $3.81 for the first 501,648 shares of our common stock issuable upon conversion and (ii) $4.23 with respect to all shares of our common stock issuable upon conversion thereafter. The remaining terms of the agreement remained in effect with minimal, non-material modifications to those terms.

Current wording

In October 2024, we entered into an amendment (the “2024 Amendment”) to the Loan Agreement, as amended. The 2024 Amendment reduced the conversion price with respect to the remaining principal amount outstanding to (i) $3.81 for the first 501,648 shares of our common stock issuable upon conversion and (ii) $4.23 with respect to all shares of our common stock issuable upon conversion thereafter. The remaining terms of the agreement remained in effect with minimal, non-material modifications to those terms. Pursuant to applicable accounting standards, after the 2024 amendment, we elected not to account for the amended convertible debt under the fair value option. Accordingly, there was no further recognition for the impact of changes in fair value in our financial statements.