Shuttle Pharmaceuticals Holdings, Inc.

Note 1 –Organization and Liquidity

Organization and Line of Business

Shuttle Pharmaceuticals Holdings, Inc. (“we,” “us,” “our,” or the “Company”) was originally formed as Shuttle Pharmaceuticals, LLC in the State of Maryland on December 18, 2012. On August 12, 2016, the Company filed articles of conversion with the State of Maryland to convert from an LLC to a C corporation, at which time the Company changed its name to Shuttle Pharmaceuticals, Inc. (“Shuttle”). In connection with the conversion, the Company issued 225,000 shares of common stock in exchange for 100% of the outstanding membership interests in Shuttle prior to conversion. On June 4, 2018, Shuttle completed a reverse merger with Shuttle Pharmaceuticals Holdings, Inc. (then known as Shuttle Pharma Acquisition Corp, Inc.), a Delaware corporation, pursuant to which Shuttle, our operating entity, became a wholly-owned subsidiary of the Company. Shuttle Diagnostics, Inc, a subsidiary of the Company, was formed in the State of Maryland on November 14, 2023.

On November 21, 2025, the Company acquired substantially all of the assets of Molecule.ai, a pharmaceutical software company building an artificial intelligence (“AI”) driven platform for molecular discovery and early-stage drug development, which were acquired by a wholly owned subsidiary of the Company. By combining modern AI techniques with structured scientific workflows, the Molecule.ai platform (hereafter, “Molecule.ai” or the “platform”) helps researchers explore the chemical space more efficiently, evaluate molecular ideas with greater clarity and make more informed decisions during the earliest stages of drug development. The platform is engineered to accelerate the iteration cycles that characterize modern drug discovery while preserving scientific reproducibility, traceability and operational reliability. Molecule.ai adapts state of the art AI algorithms to create a practical, domain-specific AI infrastructure layer for molecular research and development. The acquisition seeks to leverage Molecule.ai’s molecular modeling and predictive analytics platform to significantly augment our drug discovery and development business purpose. In tandem with the Molecule.ai asset acquisition, on November 20, 2025, we wind-down our clinical trials of Ropidoxuridine (the “Clinical Trials”), our lead product candidate (See Note 9).

Molecule.ai is built on three core architectural components: a unified inference engine, an API-first integration layer and a modular model framework. The unified inference engine orchestrates model execution and multi-step reasoning through a deterministic and traceable sequence of operations. Molecule.ai uses an API-first design, which means that all platform capabilities can be accessed programmatically. All predictive and reasoning functions are modular, which allows the platform to expand over time without changing the underlying infrastructure. Molecule.ai currently supports three scientific and computational functions that reflect both its pharmaceutical focus and the structured inference techniques seen in modern agentic LLM systems: (1) molecular property prediction, (2) cross-molecule and cross-property evaluation and (3) prediction reasoning and structured molecular insights. The platform predicts a wide range of molecular properties that are relevant to early-stage discovery and medicinal chemistry and provides inference pipelines for predicting molecular properties. By using transformer-based models, the platform computes predictive outputs on a wide range of therapeutic tasks. The platform evaluates multiple molecules across multiple properties in a unified workflow, helping researchers quickly identify the most-promising candidates, understand trade-offs, and make structured, evidence-based decisions. Molecule.ai also includes a reasoning module that uses LLM-based structured inference to contextualize predictions, explain differences between compounds, perform rule-guided reasoning and produce narrative or structured scientific interpretations with the goal to make complex scientific outputs understandable and actionable for broader research and development audiences.

The broader competitive landscape in the AI ecosystem, especially AI-driven drug discovery, is rapidly advancing toward agentic AI systems and more integrated, end-to-end platforms. To stay at the front of this shift, Molecule.ai is expanding its molecule predictive capabilities, and automated multi-tool workflows. These expansions are designed in accordance with the agentic framework and multi-tool reasoning to further strengthen the platform. A new module will evaluate chemical–protein interaction likelihoods, which will help researchers estimate how molecules may interact with specific biological targets. Molecule.ai is adding biological context reasoning supported by curated genomic and disease-association evidence, which helps tie together chemical ideas with the biological systems they may ultimately affect. The platform will increasingly support insights that connect chemical properties with biological implications, which creates a more complete, end-to-end picture for early research teams. Molecule.ai is also developing an autonomous AI agent designed to reduce manual workload and accelerate early research cycles, which will interpret a discovery objective, plan a series of actions, route each step to the appropriate tools, evaluate preliminary outputs and iterate until a stable result is achieved.

The Molecule.ai platform adheres to strict engineering standards, including reproducibility, traceability, extensibility, scalability and interoperability, which align with modern AI infrastructure expectations for regulated biomedical environments. Molecule.ai aims to become the foundational AI layer for molecular and biological reasoning in pharmaceutical research and development. By integrating property prediction, biological context, multi-step reasoning and agentic automation, the platform seeks to accelerate early discovery while maintaining scientific reliability and operational transparency.

Liquidity and Going Concern

Our unaudited condensed consolidated financial statements are prepared on a going concern basis, which contemplates the realization of assets and the satisfaction of liabilities and commitments in the normal course of business. The Company has incurred losses since inception and has a net loss of approximately $2.2 million andno revenues for the three months ended March 31, 2026 and working capital deficit of approximately $5.8 million as of March 31, 2026. The Company does not expect to generate positive cash flows from operating activities in the near future.

In March 2026, the Company closed an underwritten public offering of 2,238,800 shares of its common stock at a public offering price of $0.50 per share, resulting in gross proceeds of $3.5 million and net cash proceeds of approximately $3.2 million after deducting underwriting discounts, commissions, and offering expenses of $290,750. The offering included 4,761,200 pre-funded warrants at a price of $0.499 per warrant, each exercisable for one share of common stock at a nominal exercise price of $0.001 per share. The Company intends to use up to $1.5 million of the net proceeds from this offering for future marketing efforts and the remainder for working capital and general corporate purposes.

However, the Company’s existing cash resources, the cash received from the equity offerings, and financing available under the revolving note are not expected to provide sufficient funds to carry out the Company’s operations through the next twelve months.

The ability of the Company to continue as a going concern is dependent upon its ability to continue to successfully raise additional equity or debt financing to allow it to fund ongoing operations, fund milestone and contingent payments due under the APA, and commercialize and market the Molecule.ai platform in order to generate revenues. These conditions raise substantial doubt about the Company’s ability to continue as a going concern within one year after the date that the consolidated financial statements are issued.

The accompanying unaudited condensed consolidated financial statements do not include any adjustments to reflect the future effects on the recoverability and classification of assets or the amounts and classification of liabilities if the Company is unable to continue as a going concern.

Note 2 –Summary of Significant Accounting Policies

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial statements and with the instructions to Form 10-Q and Rule 8-03 of Regulation S-X of the United States Securities and Exchange Commission (“SEC”). Accordingly, they do not contain all information and notes required by GAAP for annual financial statements. A complete discussion of the Company’s significant accounting policies is included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2025.

In the opinion of the Company’s management, the accompanying unaudited condensed consolidated financial statements contain all of the adjustments necessary to present the financial position of the Company as of March 31, 2026 and the results of operations and cash flows for the periods presented. The accompanying unaudited condensed consolidated financial statements of the Company have not been audited by the Company’s independent registered public accounting firm, except that the year-end consolidated balance sheet was derived from audited financial statements. The results of operations for the three months ended March 31, 2026 are not necessarily indicative of the operating results for the full fiscal year or any future period.

Reverse Stock Split

On June 16, 2025, in order to meet the Minimum Bid Price Requirement again, the Company effectuated a 1-for-25 reverse stock split of its issued and outstanding common stock, rounding up to account for any fractional shares (the “Reverse Stock Splits”).

The Reverse Stock Split had no effect on the Company’s authorized shares of common stock or preferred stock and the par value remained unchanged at $0.00001. All common stock share, option, warrant and per share amounts (except our authorized but unissued shares and previously reserved shares) have been retroactively adjusted in these unaudited condensed consolidated financial statements and related disclosures.

Basis of Consolidation

The unaudited condensed consolidated financial statements have been prepared on a consolidated basis with those of the Company’s wholly-owned subsidiaries, Shuttle Pharmaceuticals, Inc. and Shuttle Diagnostics, Inc. All intercompany transactions and balances have been eliminated.

Use of Estimates

The preparation of unaudited condensed consolidated financial statements in conformity with GAAP requires management 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 unaudited condensed consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. The Company regularly evaluates estimates and assumptions. The Company bases its estimates and assumptions on current facts, historical experience, and various other factors that it believes to be reasonable under the circumstances, the results of which form the basis for making judgments about the carrying values of assets and liabilities and the accrual of costs and expenses that are not readily apparent from other sources. The actual results experienced by the Company may differ materially and adversely from the Company’s estimates. To the extent there are material differences between the estimates and the actual results, future results of operations will be affected. Significant estimates are contained in the accompanying unaudited condensed consolidated financial statements for the valuation of debt and warrants and valuation of bifurcated derivative liabilities and other financial instruments.

Cash and Cash Equivalents

Cash and cash equivalents include cash in bank accounts and money market funds with maturities of less than three months from inception, which are readily convertible to known amounts of cash and which, in the opinion of management, are subject to an insignificant risk of loss in value. As of March 31, 2026 and December 31, 2025, cash and cash equivalents consisted of the following:

Periodically, the Company may carry cash balances at financial institutions in excess of the federally insured limit of $250,000 per institution. The amount in excess of the FDIC insurance as of March 31, 2026 was approximately $0.8 million. The Company has not experienced losses on these accounts and management believes, based upon the quality of the financial institutions, that the credit risk with regard to these deposits is not significant.

Fair Value of Financial Instruments

The Company follows accounting guidelines on fair value measurements for financial instruments measured on a recurring basis, as well as for certain assets and liabilities that are initially recorded at their estimated fair values. Fair value is defined as the exit price, or the amount that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants as of the measurement date. The Company uses the following three-level hierarchy that maximizes the use of observable inputs and minimizes the use of unobservable inputs to value its financial instruments:

Financial instruments measured at fair value are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The Company’s assessment of the significance of a particular input to the fair value measurement in its entirety requires the Company to make judgments and consider factors specific to the asset or liability. The use of different assumptions and/or estimation methodologies may have a material effect on estimated fair values. Accordingly, the fair value estimates disclosed, or initial amounts recorded, may not be indicative of the amount that the Company or holders of the instruments could realize in a current market exchange.

The carrying amounts of the Company’s financial instruments including cash and cash equivalents, prepaid expenses, accounts payable and accrued liabilities approximate fair value due to the short-term maturities of these instruments.

Set out below are the Company’s financial instruments that are required to be remeasured at fair value on a recurring basis and their fair value hierarchy as of March 31, 2026 and December 31, 2025:

See Note 5 and Note 8 for additional disclosures related to the fair value of the Company’s convertible notes and derivative liabilities, respectively.

Derivative Financial Instruments

The Company does not use derivative instruments to hedge exposures to cash flow, market or foreign currency risks. The Company evaluates all of its financial instruments to determine if such instruments are derivatives or contain features that qualify as embedded derivatives. For derivative financial instruments that are accounted for as liabilities, the derivative instrument is initially recorded at its fair value and is then re-valued at each reporting date, with changes in the fair value reported in the unaudited condensed consolidated statements of operations.

For our derivative financial instruments classified as a liability, we use a Black-Sholes Models to value the derivative instruments at inception and on subsequent valuation dates. The model require specification of the current stock price, exercise price, expected term, expected volatility, a risk-free interest rate aligned with the expected term, and expected dividend yield. The classification of derivative instruments, including whether such instruments should be recorded as liabilities or as equity, is evaluated at the end of each reporting period. Derivative liabilities are classified in the unaudited condensed consolidated balance sheets as current or non-current based on whether or not net-cash settlement or conversion of the instrument could be required within twelve (12) months of the balance sheet date.

Convertible Notes Payable

The Company accounts for its Convertible Bridge Notes (as defined in Note 5) under the fair value option in accordance with ASC 825. The fair value option may be elected on an instrument-by-instrument basis and is irrevocable unless a new election date occurs. Additional term or other notes may be issued in subsequent periods where the Company would be able to make a fair value option election upon issuance provided eligibility criteria are met. The Company records the portion of the Convertible Bridge Notes that are issued and outstanding for accounting purposes at fair value with changes in fair value recorded in other income (expense), net in the unaudited condensed consolidated statements of operations, except for the portion of the total change in fair value that results from a change in the instrument-specific credit risk of the Convertible Bridge Notes, which is recorded in other comprehensive income (loss), if applicable. No loss was attributed to changes in credit risk for the periods presented therefore net loss was equal to comprehensive loss. The fair value option election was made to align the accounting for the Convertible Bridge Notes with the Company’s financial reporting objectives and reduce operational effort to account for embedded features that otherwise would require bifurcation as a separate unit of account.

Pursuant to the fair value option election, direct and incremental debt issuance costs and consideration paid to the lender related to the Convertible Bridge Notes were expensed as incurred and recorded in other income (expense), net in the unaudited condensed consolidated statements of operations.

For convertible notes for which the fair value option is not elected, the Company evaluates the convertible notes for embedded features and bifurcates these features (such as conversion options and redemption options) from their host instruments and accounts for them as free standing derivative financial instruments if certain criteria are met. The criteria include circumstances in which (a) the economic characteristics and risks of the embedded derivative instrument are not clearly and closely related to the economic characteristics and risks of the host contract, (b) the hybrid instrument that embodies both the embedded derivative instrument and the host contract is not re-measured at fair value under otherwise applicable generally accepted accounting principles with changes in fair value reported in earnings as they occur and (c) a separate instrument with the same terms as the embedded derivative instrument would be considered a derivative instrument.

Warrants

The Company accounts for warrants as either equity-classified or liability-classified instruments based on an assessment of the warrant’s specific terms and applicable authoritative guidance in FASB ASC 480,Distinguishing Liabilities from Equity(“ASC 480”) and ASC 815,Derivatives and Hedging (“ASC 815”). The assessment considers whether the warrants are freestanding financial instruments pursuant to ASC 480, meet the definition of a liability pursuant to ASC 480, and whether the warrants meet all of the requirements for equity classification under ASC 815, including whether the warrants are indexed to the Company’s own ordinary shares and whether the warrant holders could potentially require “net cash settlement” in a circumstance outside of the Company’s control, among other conditions for equity classification. Finally, the Company determines if the warrants meet the definition of a derivative based on their contractual terms. This assessment, which requires the use of professional judgment, is conducted at the time of warrant issuance and as of each subsequent quarterly period end date while the warrants are outstanding.

For issued or modified warrants that meet all of the criteria for equity classification, the warrants are required to be recorded as a component of additional paid-in capital at the time of issuance. For issued or modified warrants that do not meet all the criteria for equity classification, the warrants are required to be recorded at their initial fair value on the date of issuance, and at each balance sheet date thereafter. Changes in the estimated fair value of the warrants are recognized as a non-cash gain or loss on the unaudited condensed consolidated statements of operations. The Company also evaluates if changes in contractual terms or other considerations would result in the reclassification of outstanding warrants from liabilities to stockholders’ equity (or vice versa).

Stock-Based Compensation

Compensation cost for stock awards, which include restricted stock units (“RSUs”), is measured at the fair value on the grant date and recognized as expense, over the related service period. The fair value of stock awards is based on the quoted price of our common stock on the grant date. Compensation expense related to the RSUs is reduced by the fair value of the units that are forfeited by employees that leave the Company prior to vesting as they occur. Compensation cost for RSUs is recognized using the straight-line method over the requisite service period.

Research and Development Expenses

Research and development expenses are charged to expense as incurred. Research and development expenses include, but are not limited to, product development, clinical and regulatory expenses, payroll and other personnel expenses, which may include portions of the Company’s executives to the extent they are active involved in the research and development activities, materials, supplies, related subcontract expenses, and consulting costs.

Leases

The Company determines if an arrangement is a lease at inception. Operating leases are included in operating lease right-of-use asset (“ROU”), operating lease liability - current, and operating lease liability - noncurrent on the consolidated balance sheets.

ROU assets represent the Company’s right to use an underlying asset for the lease term and lease liabilities represent the related obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As the Company’s leases do not provide an implicit rate, the Company uses an incremental borrowing rate based on the estimated rate of interest for collateralized borrowing, over a similar term of the lease payments at commencement date. The operating lease ROU asset also includes any lease payments made and excludes lease incentives. The Company’s lease terms may include options to extend or terminate the lease when it is reasonably certain that it will exercise that option. Lease expense for lease payments is recognized on a straight-line basis over the lease term.

Impairment of Long-Lived Assets

The Company reviews its long-lived assets for impairment whenever events or changes in business circumstances indicate that the carrying amount of the asset may not be fully recoverable. Recoverability of assets is measured by a comparison of the carrying amount of an asset to the estimated undiscounted cash flows expected to be generated by the asset. If the carrying amount of the asset exceeds its estimated future cash flows, an impairment charge will be recognized in the amount by which the carrying amount of the asset exceeds the fair value of the asset. There were no impairments of long-lived assets during the periods presented.

Property and Equipment

Property and equipment are stated at cost less accumulated depreciation. Expenditures for maintenance and repairs are charged to expense as incurred; additions, renewals and betterments are capitalized. When property and equipment are retired or otherwise disposed of, the related cost and accumulated depreciation are removed from the respective accounts, and any gain or loss is included in operations. Depreciation of property and equipment is provided using the straight-line method for substantially all assets with estimated lives as follows:

Schedule of Useful Lives for Property Plant Equipment

Internal-Use Software

All costs related to the development of internal use software, other than those incurred during the application development stage, are expensed as incurred. Costs incurred during the application development stage are capitalized and amortized over the estimated useful life of the software, which is typically four years. The estimated useful lives of internally developed software are reviewed frequently and adjusted as appropriate to reflect upcoming development activities that may include significant upgrades and/or enhancements to the existing functionality. Capitalized internally developed software costs are amortized on a straight-line basis over their expected economic lives. Amortization of these costs begins once the product is ready for its intended use. The amount of costs capitalized within any period is dependent on the nature of software development activities and projects in each period.

Intangible Assets

Intangible assets can include intangible assets acquired as part of business combinations, asset acquisitions and other business transactions. The Company records intangible assets at cost, net of accumulated amortization and accumulated impairment losses, if any. Cost is measured based on the fair values of cash consideration paid and equity interests issued. The cost of an intangible asset acquired is its acquisition date fair value. Amortization of definite life intangible assets is calculated on a straight-line basis over the estimated useful lives of the assets.

Income Taxes

The Company accounts for income taxes in accordance with ASC Topic 740,Income Taxes. ASC 740 requires a company to use the asset and liability method of accounting for income taxes, whereby deferred tax assets are recognized for deductible temporary differences, and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, the Company does not foresee generating taxable income in the near future and utilizing its deferred tax asset, therefore, it is more likely than not that some portion, or all of, the deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax laws and rates on the date of enactment.

Under ASC 740, a tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The Company has no material uncertain tax positions for any of the reporting periods presented.

Segment Information

Operating segments are defined as components of an enterprise about which separate and discrete information is available for evaluation by the chief operating decision-maker (“CODM”) in deciding how to allocate resources and assess performance. The Company’s CODM, its chief executive officer, evaluates the Company’s operations and manages its business as a single operating segment. With the exception of the Molecule.ai intangible asset, substantially all of the Company’s long-lived assets are held in the United States. The Molecule.ai intangible asset is recorded on the books of the Company’s Canadian subsidiary. Refer to Note 9 for the Company’s disclosure on its single operating segment.

Net Loss Per Common Stock

Net loss per share of common stock requires presentation of basic and diluted earnings per common share on the face of the unaudited condensed consolidated statements of operations for all entities with complex capital structures and requires a reconciliation of the numerator and denominator of the basic earnings per share computation to diluted earnings per share.

In the accompanying unaudited condensed consolidated financial statements, basic loss per common share is computed by dividing net loss attributable to common stockholders by the weighted average number of shares of common stock outstanding during the year. Certain warrants issued and outstanding include terms and conditions resulting in the treatment as participating securities. Such warrants do not include an obligation for the warrant holders to fund the losses of the Company. Therefore, these warrants are excluded from the calculation of earnings per common share in periods of net loss.

Diluted earnings per share is computed by dividing net income attributable to common stockholders by the weighted average number of shares of common stock outstanding and potentially dilutive shares of common stock during the period to reflect the potential dilution that could occur from common shares issuable through convertible securities, contingent share arrangements, stock options and warrants unless the result would be antidilutive.

The dilutive effect of restricted stock units and other stock-based payment awards subject to vesting and common stock warrants is calculated using the “treasury stock method,” which assumes that the “proceeds” from the exercise of these instruments are used to purchase common shares at the average market price for the period. The dilutive effect of convertible securities is calculated using the “if-converted method.” Under the if-converted method, securities are assumed to be converted at the beginning of the period, and the resulting shares of common stock are included in the denominator of the diluted calculation for the entire period being presented.

Given the nominal exercise price of the Company’s issuance of Pre-Funded Warrants (as defined in Note 6), such Pre-Funded Warrants are included in the calculation of basic and diluted net loss per share as the exercise price per warrant is deemed non-substantive when compared to the fair value of the underlying common shares.

For the three months ended March 31, 2026 and year ended December 31, 2025, the following common stock equivalents were excluded from the computation of diluted net loss per share as the result of the computation was anti-dilutive.

Schedule of Anti-dilutive Securities Excluded from Computation of Earnings Per Share

Recently Adopted Accounting Pronouncements

In December 2023, the FASB issued ASU 2023-09, “Income Taxes (Topic 740): Improvements to Income Tax Disclosures,” which requires disaggregated information about a reporting entity’s effective tax rate reconciliation as well as information on income taxes paid. The guidance is effective for the Company’s fiscal years beginning after December 15, 2024. The Company adopted ASU 2023-09, effective December 31, 2025, in these unaudited condensed consolidated financial statements. ASU 2023-09 which only impacted the disclosures and did not otherwise impact the unaudited condensed consolidated financial statements.

Recently Issued Accounting Pronouncements

In November 2024, the FASB issued ASU 2024-03, “Disaggregation of Income Statement Expenses (“DISE”),” which requires disaggregated disclosure of income statement expenses for public business entities. The ASU does not change the expense captions an entity presents on the face of the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the notes to the financial statements. ASU 2024-03 is effective for all public business entities for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the potential impact that this standard may have on its unaudited condensed consolidated financial statements and related disclosures.

In September 2025, the FASB issued ASU 2025-06, “Intangibles-Goodwill and Other-Internal-use Software (Subtopic 350-40),” which modernizes the accounting framework for internal-use software. The ASU removes all references to prescriptive and sequential software development stages to reflect the current software development methodologies and frameworks. Under the ASU, an entity is required to start capitalizing software development costs when both of the following occur: (i) management has authorized and committed to funding the software project and (ii) it is probable that the project will be completed and the software will be used to perform the function intended. ASU 2025-06 is effective for all entities for fiscal years beginning after December 15, 2027, and interim periods within fiscal years beginning after December 15, 2027. Early adoption is permitted. The Company is currently evaluating the potential impact that this standard may have on its unaudited condensed consolidated financial statements and related disclosures.

There have been no other recent accounting pronouncements, changes in accounting pronouncements or recently adopted accounting guidance that are of significance or potential significance to the Company.

Note 3 -Leases

Operating lease right-of-use (“ROU”) assets and liabilities are recognized at the present value of the future lease payments as of the lease commencement date. Operating lease expense is recognized on a straight-line basis over the lease term.

The Company currently has a lease agreement which allows for the use of a laboratory facility, entered into on February 16, 2023, with base rent of $7,206 per month for a period of 64 months, which increases at the rate of 3% per year, that commenced June 1, 2023. The lease included a six-month 50% rent abatement upon commencement. Additional common area maintenance (“CAM”) fees are charged monthly and revised annually. In addition to monthly base rent, the Company pays monthly CAM fees, which are being expensed as incurred. An irrevocable letter of credit (“LOC”) for the security deposit of $43,234 and base rent of $3,891, including 50% abatement, and $3,315 of CAM cost, was due and paid on execution of the lease agreement. Alexandria Real Estate (ARE-QRS-CORP) is the beneficiary of the LOC. The current LOC expired on March 1, 2026.

Following the Company’s discontinuation of its clinical trial for Ropidoxuridine, the Company committed to a plan to pursue a sublease for its laboratory space. Although no sublease has been executed as of March 31, 2026, the Company recorded total non-cash impairment charges of $109,235 related to its operating lease right-of-use asset during the year ended December 31, 2025, to reflect the reduced expected economic value of the operating lease right-of-use asset based on estimated sublease rates. The impairment charges are recorded within research and development expenses in the condensed consolidated statements of operations.

The following summarizes the right-of use asset and lease information for the Company’s operating leases:

Future non-cancelable minimum lease payments under the operating lease liability as of March 31, 2026, are as follows:

Schedule of Future Non-cancelable Minimum Lease Payments Under Operating Lease Liability

Note 4 –Notes Payable-Related Party

On October 14, 2024, as part of the senior convertible note offering described in Note 5, the Company entered into a loan with a former officer of the Company in the amount of $250,000 (principal) with an interest rate of 14.5% per annum due October 13, 2025, and warrants to purchase 4,016 shares of common stock at an exercise price of $35.00 per share. As of December 31, 2025, there wasno outstanding principal and interest balances for these related party notes. Under the fair value option, the senior convertible note was $206,085 as of December 31, 2024. The convertible note converted to 39,216 shares of the Company’s common stock in October 2025 (see Note 10).

On September 4, 2024, the Company issued a $250,000 promissory note (the “Promissory Note”) to a former officer of the Company for $250,000. The Promissory Note accrues interest at 12% per annum and is repayable in 12 substantially equal installments over a period of one year. During the years ended December 31, 2025 and 2024, the Company incurred $8,730 and $8,692 in interest expense relating to this Promissory Note. For the years ended December 31, 2025 and 2024, the Company repaid principal of $190,270 and $59,730, respectively. For the years ended December 31, 2025 and 2024, the Company paid interest of $9,640 and $6,907, respectively. The principal balance of the Promissory Note as of December 31, 2025 and 2024 was $0 and $190,270, respectively.

Note 5 -Convertible Notes and Loan Agreement

Revolving Note Agreement

On February 27, 2025, the Company entered into a Revolving Loan Agreement with Bowery Consulting Group Inc. (“Bowery”) (the “Lender”). Pursuant to and under the terms of the Revolving Loan Agreement, the Company issued a revolving note dated February 28, 2025 in the principal amount of up to $2,000,000 (the “Revolving Note”), which the Company may draw upon at its discretion from time to time through its maturity on February 28, 2026.

The Company recognized deferred loan costs of approximately $78,000 in relation to the closing of the Revolving Loan Agreement and were amortized to interest expense on a straight-line basis to the maturity of the Revolving Loan Agreement. During the year ended December 31, 2025, the Company recognized $62,030 and $12,122 during the three months ended March 31, 2026 in interest expense related to the amortization of these deferred loan costs. The Revolving Loan expired on February 28, 2026.

2024 Convertible Bridge Notes

During October 2024, the Company completed a senior convertible note offering in two closings, as further described below.

On October 14, 2024, the Company issued an aggregate of $600,000 (of an up to $1.3 million authorized financing) senior secured convertible notes due in October 2025, which accrue interest at 14.5% interest per year. The notes included a 5% original issue discount and the Company received $570,000 in proceeds. The notes were optionally convertible by each holder at a 10% premium beginning three months after the date of issuance, and the conversion price would be the 5-day volume-weighted average price (“VWAP”) immediately prior to Closing unless re-set (one-time only) by a lower price of an offering entered into by the Company during the term of the notes. The Company had the option to prepay the notes at any time for 107% of total outstanding balance and any outstanding principal would be paid in conversion of shares of common stock at a 15% discount at the end of the term, subject to the Company’s exercise of the optional prepayment right. Any accrued interest was repaid quarterly in cash. The Company also issued warrants to the lenders to purchase an aggregate 9,639 shares of common stock, exercisable at $35.00 per share, with such warrants expiring five years from issuance. In addition, the Company’s former Chief Executive Officer and Chief Scientific Officer, Dr. Anatoly Dritschilo, invested a total of $237,500 in this financing round, in exchange for a $250,000 convertible note (see Note 4).

As part of the same offering, on October 21, 2024, the Company issued an additional $231,579 in senior secured convertible notes due in October 2025, with substantially similar terms as the October 14, 2024, issuance. The notes include a 5% original issue discount and the Company received $220,000 in proceeds. The Company also issued warrants to the lenders to purchase an aggregate 3,543 shares of common stock, exercisable at $37.25 per share, with such warrants expiring five years from issuance. Upon completing this issuance, the Company closed the senior secured convertible note offering after receiving a total of $790,000 in proceeds.

Immediately prior to their mandatory conversion, the Company remeasured the fair value of the Convertible Bridge Notes based on the number of shares to be issued upon conversion and the fair value of the Company’s common stock immediately prior to conversion. Upon mandatory conversion of the outstanding principal in October 2025, the Company issued 117,612 shares of common stock. The fair value of the Company’s common stock at October 14, 2025 and October 21, 2025 was $3.92 and $3.47 per share.

The following table summarizes the changes in the carrying value of the Convertible Bridge Notes:

Schedule of Fair Value Measurement using Significant Unobservable Inputs

Alto Opportunity Master Fund, SPC

In January 2023, in connection with the Alto Convertible Note, the Company issued warrants to purchase 5,091 shares of common stock, with an exercise price of $3.38 per share, as adjusted, valued at inception at $1.1 million and as of March 31, 2026, at less than $0.1 million. The Company determined that the derivative liabilities from the warrants issued in relation to the Alto Convertible Note did not qualify for classification as equity instruments due to the existence of certain net cash settlement provisions that are not within the sole control of the Company. In addition, there are certain down round provisions that could reduce the exercise price if the Company issues securities at lower prices in the future.

Note 6 –Molecule.ai Asset Acquisition

On November 20, 2025, the Company, through its wholly-owned subsidiary 1563868 B.C. Ltd, entered into an asset purchase agreement with 1542770 B.C. Ltd (the “Selling Party”) pursuant to which the Company purchased certain assets of the Selling Party, including, among others, the Selling Party’s AI-driven life sciences platform, all as more specifically set forth in the asset purchase agreement. In exchange for the acquired assets, the Company agreed to pay the Selling Parties (i) a cash payment of $3,000,000 at Closing, (ii) a first installment of $3,000,000 payable six months after Closing, and (iii) a second installment of $2,000,000 payable twelve months after closing, with both installments payable in cash or common stock at the Selling Party’s discretion, subject to a 19.99% equity issuance cap without shareholder approval. In addition, the Selling Party is entitled to contingent consideration of up to $2,000,000, payable upon achievement of specified technology development milestones within six months post-closing. Any portion of the consideration settled in equity will be measured based on the volume-weighted average price of the Company’s common stock over the ten trading days preceding the payment date.

Concurrently, the Company executed a consulting agreement pursuant to which the founder of the Selling Party will provide specified consulting services to enhance, upgrade and develop new features for the AI-driven platform. The term of the consulting agreement is one year, cancellable at any time by either party with thirty days’ notice. Total consideration under the consulting agreement is approximately $0.1 million per year, payable in equal monthly installments. The Company concluded that the payments under the consulting agreement are representative of fair market value and there are not economic interdependencies between the asset purchase agreement and the consulting

On December 23, 2025, the parties executed the first amendment to the asset purchase agreement pursuant to which a portion of the first installment payment was accelerated, with the remaining balance payable in accordance with the original terms. The Company issued 320,496 shares of common stock for an aggregate value of approximately $0.6 million, with the remaining $2.4 million payable in May 2026.

The asset purchase agreement contains customary mutual indemnification provisions under which each party agrees to indemnify the other for certain losses arising from breaches of representations, warranties, and covenants and specified pre-/post-closing liabilities, subject to customary limitations such as survival periods, thresholds, and caps.

The total purchase consideration as determined by the Company is as follows:

The Company incurred approximately $0.1 million of transaction expenses related to the acquisition, which were capitalized and included in the initial carrying value at the date of the acquisition.

The Company accounted for the transaction as an asset acquisition due to the determination that substantially all of the fair value of the assets acquired was concentrated in a group of similar identifiable assets. The Company believes the “substantially all” criterion was met with respect to the acquired intellectual property as it acquired no other assets and assumed no liabilities in the transaction. Further, the Company concluded that the asset acquired represented a developed technology asset as the assets did not meet the definition of an in-process research and development asset. Accordingly, the purchase consideration, plus transaction costs, was allocated to the developed technology asset, with no goodwill recognized. The Company estimates that the developed technology asset has a useful life offour years.

The carrying value of the developed technology asset is summarized as follows:

Note 7 -Stockholders’ Equity

Common Stock

During the three months ended March 31, 2026, the Company issued:

During the three months ended March 31, 2025, the Company issued:

March 2025 Equity Financing

On March 12, 2025, the Company entered into an Underwriting Agreement (the “Underwriting Agreement”) with WestPark Capital, Inc. (“WestPark”) as the sole underwriter (the “Underwriter”), related to a public offering (the “Offering”) of (i)53,637 shares of common stock of the Company, at a public offering price of $7.50 per share and (ii) pre-funded warrants to purchase 713,030 shares of common stock at an exercise price of $0.025 per share, at a public offering price of $7.475 per Pre-Funded Warrant (the “March 2025 Pre-Funded Warrants”). The Offering closed on March 13, 2025.

The Offering resulted in gross proceeds of approximately $5.7 million and net proceeds of approximately $5.0 million, reflecting approximately $0.7 million of legal costs and other expenses connected with the transaction.

The March 2025 Pre-Funded Warrants were exercisable at any time after March 13, 2025, at an exercise price of $0.025 per share. The March 2025 Pre-Funded Warrants contained standard adjustments to the exercise price, including for stock splits, stock dividends and pro rata distributions and contain customary terms regarding the treatment of such March 2025 Pre-Funded Warrants in the event of a fundamental transaction, which included but are not limited to a merger or consolidation involving the Company, a sale of all or substantially all of the assets of the Company or a business combination resulting in any person acquiring more than 50% of the outstanding shares of common stock of the Company. Additionally, the March 2025 Pre-Funded Warrants included restrictions on exercise in the event the holder’s beneficial ownership of the Company’s common stock would exceed 4.99% of the number of shares of common stock outstanding immediately after giving effect to the exercise.

The Company concluded that the March 2025 Pre-Funded Warrants met the requirements to be classified in stockholders’ equity, and have been recorded as additional paid in capital.

As of March 31, 2026, all 713,030 of the March 2025 Pre-Funded Warrants have been exercised.

June 2025 Private Placement

On June 20, 2025, the Company entered into a Securities Purchase Agreement (the “Securities Purchase Agreement”) in a private placement, and engaged WestPark Capital, Inc. (“WestPark”) as the sole placement agent (the “Placement Agent”), pursuant to which the Company agreed to sell an aggregate of $4.3 million of its securities. The private placement consisted of the issuance of (i)21,924 shares of common stock of the Company and purchase price of $3.60 per share, and (ii)1,158,953 pre-funded warrants, each to purchase one share of common stock of the Company at a purchase price of $3.599 and exercise price of $0.001 per pre-funded warrant (the “June 2025 Pre-Funded Warrants”) to one investor. The private placement closed on June 24, 2025. The private placement resulted in gross proceeds of approximately $4.3 million and net proceeds of approximately $3.9 million, reflecting approximately $0.4 million of placement agent fees, legal costs and other expenses connected with the transaction.

The June 2025 Pre-Funded Warrants are exercisable at any time after issuance on June 24, 2025, at an exercise price of $0.001 per share. The June 2025 Pre-Funded Warrants contain standard adjustments to the exercise price, including for stock splits, stock dividends and pro rata distributions and contain customary terms regarding the treatment of such June 2025 Pre-Funded Warrants in the event of a fundamental transaction, which include but are not limited to a merger or consolidation involving the Company, a sale of all or substantially all of the assets of the Company or a business combination resulting in any person acquiring more than 50% of the outstanding shares of common stock of the Company. Additionally, the June 2025 Pre-Funded Warrants include restrictions on exercise in the event the holder’s beneficial ownership of the Company’s common stock would exceed 4.99% (or, upon election by a holder prior to the issuance of any Warrants, 9.99%) of the number of shares of common stock outstanding immediately after giving effect to the exercise.

In connection with the Securities Purchase Agreement, the Company entered into a registration rights agreement with the investor. Pursuant to the registration rights agreement, the Company agreed to file a registration statement with the Securities and Exchange Commission (the “SEC”) to register for resale the shares of common stock, and the shares issuable upon exercise of the pre-funded warrants issued under the purchase agreement, within 10 days of the closing date, and to have such registration statement declared effective within 90 days of the closing date (or 120 days if the registration statement is reviewed by the SEC). The registration rights agreement provided that the Company would be obligated to pay certain liquidated damages to the investor if the Company failed to file the resale registration statement, or to have such registration statement declared effective by such dates. The Company was prepared to file the registration statement within the deadline required under the registration rights agreement but due to requests by the investor, the Company did not file the registration statement until August 4, 2025, upon receiving the investor’s request to do so. The registration statement was declared effective on August 11, 2025.

The Company concluded that the shares and June 2025 Pre-Funded Warrants met the requirements to be classified in stockholders’ equity, and the proceeds from the issuance of the shares and June 2025 Pre-Funded Warrants have been recorded in additional paid-in capital.

As of March 31, 2026, all pre-funded warrants related to the June 2025 Private Placement have been exercised.

November 2025 Equity Financing

On November 3, 2025, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with Alternative Investment Capital Inc. (the “Purchaser”, “Investor”, or the “Holder”), pursuant to which the Company agreed to issue and sell to the Purchaser in a private placement transaction (the “Offering”) pre-funded warrants (the “November 2025 Pre-Funded Warrants”) to purchase up to 625,156 shares of common stock of the Company for aggregate gross proceeds of approximately $2.5 million, before deducting placement agent fees to WestPark and offering expenses payable by the Company. The Offering closed on November 4, 2025. The Offering resulted in gross proceeds of approximately $2.5 million and net proceeds of approximately $2.3 million, reflecting approximately $0.2 million of legal costs and other expenses connected with the transaction.

The November 2025 Pre-Funded Warrants are exercisable at any time after November 4, 2025, at an exercise price of $0.001 per share. The November 2025 Pre-Funded Warrants contain standard adjustments to the exercise price, including for stock splits, stock dividends and pro rata distributions and contain customary terms regarding the treatment of such November 2025 Pre-Funded Warrants in the event of a fundamental transaction, which include but are not limited to a merger or consolidation involving the Company, a sale of all or substantially all of the assets of the Company or a business combination resulting in any person acquiring more than 50% of the outstanding shares of Common Stock of the Company. Additionally, the November 2025 Pre-Funded Warrants include restrictions on exercise in the event the Purchaser’s beneficial ownership of the Company’s common stock would exceed 4.99% (or, upon election by a holder prior to the issuance of any Warrants, 9.99%) of the number of shares of Common Stock outstanding immediately after giving effect to the exercise.

The Company concluded that the November 2025 Pre-Funded Warrants met the requirements to be classified in stockholders’ equity, and the proceeds from the issuance of the November 2025 Pre-Funded Warrants have been recorded in additional paid in capital.

As of March 31, 2026, all November 2025 Pre-Funded Warrants have been exercised.

March 2026 Equity Financing

On March 9, 2026, the Company closed an underwritten public offering of 2,238,800 shares of its common stock at a public offering price of $0.50 per share, resulting in gross proceeds of $3.5 million and net proceeds of approximately $3.2 million after deducting underwriting discounts, commissions, and offering expenses of $290,750. The offering included 4,761,200 pre-funded warrants at a price of $0.499 per warrant, each exercisable for one share of common stock at a nominal exercise price of $0.001 per share.

As of March 31, 2026, no March 2026 Pre-Funded Warrants have been exercised.

Warrants

In connection with the Convertible Bridge Notes in October 2024, the lenders were granted warrants to purchase 9,639 shares of common stock, at an exercise price of $35.00 per share and warrants to purchase 3,543 shares of common stock, at an exercise price of $37.25 per share.

In connection with the October 2024 Equity Financing, the Company issued pre-funded warrants to purchase up to 102,210 shares of common stock, at an exercise price of $0.025 per share, and warrants to purchase up to 118,033 shares of common stock, at an exercise price of $35.00 per share.

In connection with the March 2026 equity financing, the Company issued 4,761,200 pre-funded warrants which are outstanding as of March 31, 2026.

A summary of activity regarding warrants to purchase common stock (excluding pre-funded warrants) for the three months ended March 31, 2026 were as follows:

The warrants had intrinsic value of $0 as of March 31, 2026. All of the outstanding warrants are exercisable as of March 31, 2026.

Equity Incentive Plan

The Company’s 2018 Equity Incentive Plan (the “2018 Plan”) provides for equity incentives to be granted to employees, executive officers, directors and key advisers and consultants. Equity incentive grants may be made in the form of stock options with an exercise price of not less than the fair market value of the underlying shares as determined pursuant to the 2018 Plan, restricted stock awards, other stock-based awards, or any combination of the foregoing. The 2018 Plan is administered by the Company’s compensation committee. In May 2025, the Company increased the shares authorized under the 2018 Plan by 5,000,000 shares. As of March 31, 2026, the Company has authorized 8,000,000 shares of common stock for issuance under the 2018 Plan. As of March 31, 2026,204,015 shares have been granted, net of forfeitures, under the 2018 Equity Incentive Plan, of which 97,124 shares have vested.

Restricted Stock Units

The Company may grant restricted stock units (“RSU”) under our 2018 Plan. RSUs are bookkeeping entries representing an amount equal to the fair market value of one share of our common stock. Subject to the provisions of the 2018 Plan, the administrator determines the terms and conditions of RSUs, including the vesting criteria and the form and timing of payment. Notwithstanding the foregoing, the administrator, in its sole discretion, may accelerate the time at which any restrictions will lapse or be removed. RSUs granted typically vest annually in one third increments from the date of appointment.

During the years ended December 31, 2025 and 2024, pursuant to agreements with directors, officers and consultants,231,720 and 44,099 RSUs with a value of $1.1 million and $0.9 million were granted, respectively.

Stock-based compensation expense was classified as follows for the three months ended March 31, 2026 and 2025:

Schedule of Compensation Expenses (RSUs)

On February 27, 2025, the Company entered into a Revolving Loan Agreement with Bowery Consulting Group Inc. (“Bowery”) where the Company may borrow from Bowery an aggregate principal amount of up to $2,000,000 (see Note 5). As part of one of the lender conditions, no less than four of the current board members were to resign, with three new nominees to be elected and appointed by the remaining members of the Company’s Board of Directors. Upon the resignation of the four board members, vesting of all outstanding unvested RSUs held by the departing board members were allowed to accelerate immediately. The Company concluded that the acceleration represented a modification of the outstanding unvested RSUs. As a result of the modification, the Company recorded approximately $0.5 million of stock-based compensation expense. On September 8, 2025, the managing partner of Bowery was appointed to the Company’s Board of Directors. As a result, Bowery became a related party effective as of that date.

On August 31, 2025 and September 11, 2025, Steve Richards and Joseph Tung, respectively, resigned from their positions on the Board of Directors. Upon the resignation of the two board members, vesting of 7,367 RSUs held by each departing board member, for a total of 14,734 were allowed to accelerate immediately and the remaining unvested RSUs were forfeited. The Company concluded that the acceleration represented a modification of the outstanding unvested RSUs. As a result of the modification, the Company recorded approximately $30,503 of stock-based compensation expense.

On May 8, 2025, the Company and Dr. Anatoly Dritschilo (“Dr. Dritschilo”) executed a Settlement Agreement and General Release pursuant to which Dr. Dritschilo agreed to resign from his position as the Company’s Chief Scientist Officer and Director of the Company’s Board of Directors on May 9, 2025. Under the Agreement and as consideration for timely signing, not timely revoking, and compliance with the promises made therein, the Company agreed to issue 38,565 RSUs, which vest in two years from issuance date. The fair value of the Company’s common stock at close of market on May 9, 2025 was $5.825 per share, for an aggregate fair value of the RSUs of $224,641. In November 2025, the Company accelerated recognition of the remaining unrecognized stock-based compensation expense of $170,481 associated with Dr. Dritschilo’s Settlement Agreement. As the Company is winding down its clinical trial activities, management concluded the remaining service requirements were no longer substantive; therefore, the remaining expense was recognized in November 2025. The expense is presented within research and development expense for the year ended December 31, 2025, and no additional expense will be recognized thereafter.

On November 21, 2025, Mr. Lorber resigned from his position as Chief Financial Officer. In connection with his resignation, the Company and Mr. Lorber entered into a Separation Agreement and Mutual Release (the “Separation Agreement”). Under the Separation Agreement, specified portions of Mr. Lorber’s RSU awards were modified to accelerate and vest on February 8, 2026, which coincided with (i) the expiration of his obligation to remain available for reasonable consultation/inquiries under the Separation Agreement and (ii) the vesting date of the August 12, 2025 RSU award under its original terms. As a result of the modification,14,999 RSUs were forfeited and 39,854 RSUs remained outstanding and subject to vesting through February 8, 2026. As a result of the modification, the Company recognized incremental stock-based compensation expense of $322 during the year ended December 31, 2025.

As of March 31, 2026, there was $0.3 million of unrecognized RSU compensation cost related to non-vested stock-based compensation arrangements which is expected to be recognized over a weighted-average period of 2.15 years.

The following is a summary of activity regarding Restricted Stock Units issued:

Note 8 –Derivative Liabilities

Fair Value Assumptions Used in Accounting for Derivative Liabilities

ASC 815 requires the Company to assess the fair market value of derivative liabilities at the end of each reporting period and recognize any change in the fair market value as other income or expense.

In October 2024, in connection with the October 2024 Equity Financing, the Company issued warrants to purchase 118,033 shares of common stock, with an exercise price of $35.00 per share, valued at inception at $0.2 million and as of March 31, 2026, at less than $0.1 million. The Company determined that the derivative liabilities from the warrants issued in relation to the October 2024 Equity Financing did not qualify for classification as equity instruments as they did not meet the requirements to be considered indexed to the Company’s own stock, due to potential variability in the settlement amount upon a fundamental transaction, as defined.

In January 2023, in connection with the Alto Convertible Note, the Company issued warrants to purchase 5,091 shares of common stock, with an exercise price of $3.38 per share, as adjusted as of March 31, 2026, at less than $0.1 million. The Company determined that the derivative liabilities from the warrants issued in relation to the Alto Convertible Note did not qualify for classification as equity instruments due to the existence of certain net cash settlement provisions that are not within the sole control of the Company. In addition, there are certain down round provisions that could reduce the exercise price if the Company issues securities at lower prices in the future.

As of March 31, 2026, the Company utilized a Black-Scholes Model to calculate the fair value of the Alto and October 2024 Equity Financing warrants. The key inputs for the Black-Scholes Model as of March 31, 2026, were as follows:

The following table summarizes the changes in the derivative liabilities:

Note 9 –Commitments and Contingencies

On March 19, 2026, the Company entered into a consulting agreement with the IR Agency. Pursuant to the consulting agreement, IR Agency LLC (the “IR Agency”) agreed to provide certain marketing and advertising services to communicate information about the Company to the financial community, including, but not limited to, creating company profiles, media distribution and building a digital community with respect to the Company. As consideration for the performance of the services, the Company paid $1.25 million to IR Agency. The term of the consulting agreement was three months starting on March 19, 2026.

On April 3, 2025, the Company, entered into a consulting agreement with the IR Agency. Pursuant to the consulting agreement, IR Agency agreed to provide certain marketing and advertising services to communicate information about the Company to the financial community, including, but not limited to, creating personnel profiles, media distribution and building a digital community with respect to the Company. As consideration for the performance of the services, the Company paid the IR Agency $2.0 million on April 5, 2025. The term of the consulting agreement was for three months starting on April 3, 2025.

On September 15, 2025, the Company, entered into another consulting agreement with the IR Agency to continue the services contracted for in April 2025. As consideration for the performance of the services, the Company paid the IR Agency $1.5 million. The term of the consulting agreement was for two months. For the year ended December 31, 2025, the Company incurred $3.5 million of costs under the two consulting agreements with the IR Agency.

On December 16, 2024, the Company entered into a sponsored research agreement (the “Sponsored Research Agreement”) with the Regents of the University of California, on behalf of its San Francisco campus (the “UCSF”), pursuant to which UCSF’s employees will conduct research on a project entitled “Investigation of 18F-fluorodeboronation method for PSMA targeting ligand radiolabeling and evaluation in prostate cancer models” (the “Research Program”). Under the terms of the Sponsored Research Agreement, the Company will bear the total cost of $0.3 million of the Research Program and has an exclusive license to the intellectual property underlying the research. This Sponsored Research Agreement will be effective for a period of one year and may be extended by written mutual consent of the parties. In December 2025, the Sponsored Research Agreement was extended until June 30, 2026. During the year ended December 31, 2025, the Company made prepayments of $0.2 million, respectively, and amortized $0.2 million, respectively, of costs under the Sponsored Research Agreement.

In January 2025, the Company entered into a change order to its existing agreement with Theradex Systems, Inc., the Company’s primary third-party CRO, for purposes of supporting the Company’s clinical trials of Ropidoxuridine. Following the change order, the Company’s total cost limit increased by $3.0 million, for an aggregate of $5.3 million. On October 15, 2025, the Company received a letter from Theradex Systems, Inc., providing written notice of termination of the master agreement, dated November 1, 2018 (the “Master Agreement”), between the Company and Theradex, and all work orders thereunder, and demanding immediate payment of all outstanding amounts owed thereunder in the aggregate amount of $1.1 million. Pursuant to the notice of termination, on November 20, 2025, the Company entered into a release and settlement agreement (the “Settlement Agreement”) with Theradex, pursuant to which the Company paid a partial payment of $0.3 million to Theradex as full and final payment of any and all claims relating to the debt or obligation previously owed by the Company to Theradex, totalling approximately $0.6 million (the “Outstanding Liabilities”) and in consideration of such payment, each party released, acquitted and discharged each other from all claims arising from the Outstanding Liabilities and Theradex properly winded down operations in a manner compliant with the Food and Drug Administration. After the payments pursuant to the Settlement Agreement, the Company still owes amounts, under five separate research site agreements between the Company and various hospitals, as disclosed in the Settlement Agreement. As part of the Company’s wind down of its Clinical Trials, the Company has incurred expenses that qualify as exit and disposal costs under U.S. GAAP. These include right of use asset impairment charges, accelerated expense recognition of share-based payments, and contract termination costs. Costs associated with the wind down of the Clinical Trials are recorded within research and development expenses in the consolidated financial statement of operations. The Company currently estimates wind down costs associated with Theradex contract termination to be approximately $0.8 million and is recorded within accounts payable and accrued expenses on the consolidated balance sheets as of December 31, 2025, and within research and development expenses on the consolidated statements of operations for the year ended December 31, 2025.

In March 2025, the Company entered into a consulting services agreement (the “Consulting Agreement”) with Bowery Consulting Group Inc. (the “Consultant”). According to the Consulting Agreement, the Consultant will provide consulting services in connection with the Company’s business, advising on viability of plans for scaling activities, growth and capital raising strategies, and costs minimization associated with technological platform improvements and marketing spend. On September 8, 2025, the managing partner of the Consultant was appointed to the Company’s board of Directors. As a result, the Consultant became a related party effective as of that date. The Company agreed to pay the Consultant $0.3 million for their services, of which the Company recognized expense of $0.3 million during the year ended December 31, 2025 related to the Consulting Agreement.

On November 10, 2021, the Company entered into an engagement agreement (“EA”) with Boustead designating Boustead as its exclusive financial advisor for corporate finance activities and subsequently, on August 29, 2022, the Company entered into an underwriting agreement with Boustead in conjunction with the Company’s IPO. The EA contained an up to three year right of first refusal (“ROFR’) and the Underwriting Agreement, which overrode conflicting terms in the EA, contained a two year ROFR following the September 2, 2022 closing of the Company’s IPO. Further, Boustead also had a ROFR in conjunction with the Company’s terminated rights offering, which provided Boutead with a ROFR through February 7, 2025. Following the Company’s engagement agreement and underwriting agreement with WestPark Capital dated February 10, 2025 and March 13, 2025, respectively, Boustead asserted it has ROFR rights, demanding termination of WestPark’s engagement and claiming entitlement to compensation under the Boustead EA. As of the reporting date, there are no conditions indicating a loss has been incurred, nor does the Company believe a loss is probable and reasonably estimable, therefore no accrual for a potential loss has been recorded.

The Company is, from time to time, involved in various legal proceedings relating to claims arising in the ordinary course of its business. Neither the Company nor any of its subsidiaries is a party to any such legal proceeding the outcome of which, individually or in the aggregate, is expected to have a material adverse effect on the Company’s financial position, results of operations or cash flows.

Note 10 –Business Segment Information

The Company operates asone operating segment with a focus on the development of novel drug therapies, including cancer therapies, extending new applications of radiation therapy, and other drug development, including through the use of the Molecule.ai platform by the Company as well as licensing the right to use Molecuile.ai to others. The CEO, as our chief operating decision maker (CODM), manages and allocates resources to the operations of the Company on a consolidated basis, considering primarily research and development expenditures, investment in the continued development of the Molecule.ai platform cash burn and net loss. This enables the CEO to assess our overall level of available resources and determine how best to deploy these resources across projects in line with the longer-term Company-wide strategic goals. During the year ended December 31, 2025, the Company appointed an Interim CEO, who assumed the role of CODM. This appointment did not result in any immediate changes to the reporting metrics that the CODM uses to manage and allocate resources to the operations of the Company. Our former CEO continued to chair the Company’s Board of Directors and serve in a corporate role as Chief Scientific Officer until his retirement on May 9, 2025.

The accounting policies of our reportable segment are the same as those described in the “Summary of Significant Accounting Policies” for the Company. All costs, research and development expenses, general and administrative expenses, other operating expenses, interest expense, depreciation, corporate overhead assets (workforce, intellectual property, etc.) are fully allocated to the Company’s one segment. Significant segment expenses include payroll and costs incurred for the Company’s primary third-party contract research organization (“CRO”). The contract with the Company’s primary CRO was terminated during the year ended December 31, 2025 following the discontinuation of the clinical trial of Ropidoxuridine (see Note 9). During the three months ended March 31, 2026 and 2025, the Company incurred payroll expenses classified in our unaudited condensed consolidated statements of operations as general and administrative of $0.3 million and $0.2 million, respectively. During the three months ended March 31, 2026, the Company incurred third-party CRO expenses of $0 million and $0.8 million, respectively, all of which is classified in our unaudited condensed consolidated statements of operations as research and development. All other operating expenses in our unaudited condensed consolidated statements of operations are characterized as other segment expenses which, after factoring in other income and expenses, reconcile to net loss for each period. The Company’s reportable segment’s profit or loss, assets, significant expenses and other specified items are consistent with the financial information disclosed in our unaudited condensed consolidated financial statements. See the unaudited condensed consolidated financial statements for the financial information of the Company’s one segment.

Note 11 –Subsequent Events

Merger Agreement

General Description of the Merger Agreement

On April 30, 2026, Shuttle Pharmaceuticals Holdings, Inc. (“Shuttle” or “Acquiror”), entered into an Agreement and Plan of Merger (the “Merger Agreement”) with Shuttle Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Shuttle (“Merger Sub”) and United Dogecoin Inc., a Delaware corporation (the “Company”), the transactions contemplated by which (the “Transactions”) were subsequent completed on May 6, 2026 (the “Closing Date”).

Pursuant to the terms and conditions of the Merger Agreement, the Acquiror filed a certificate of merger (the “Certificate of Merger”) with the Secretary of State of the State of Delaware (such time of the filing of the Certificate of Merger, the “Effective Time”), in accordance with the General Corporation Law of the State of Delaware. Pursuant to the Certificate of Merger, Merger Sub merged with and into the Company (the “Merger”), with the Company surviving the Merger as the Surviving Corporation (as defined in the Merger Agreement). As a result of the Merger, the Company will become a direct wholly owned subsidiary of Acquiror and all of the property, rights, privileges, powers and franchises of the Company and Merger Sub vested in the Surviving Corporation and all of the debts, liabilities and duties of the Company and Merger Sub became the debts, liabilities and duties of the Surviving Corporation.

Transaction Consideration

At the Effective Time, by virtue of the Merger and without any action on the part of the Company, Acquiror, Merger Sub or the holders of any existing common stock of the Company (the “Existing Company Common Stock”): (i) each share of common stock of Merger Sub, issued and outstanding immediately prior to the Effective Time was converted into one validly issued, fully paid and nonassessable share of common stock of the Company (the “Company Common Stock”); and (ii) each share of Existing Company Common Stock of the Company (collectively, the “Existing Company Stock”) issued and outstanding immediately prior to the Effective Time was canceled and converted into the right to receive a portion of the Merger Consideration (as defined herein), consisting of a newly designated Series B-1 convertible preferred stock, par value $0.00001 per share, of the Acquiror (the “Series B-1 Preferred Stock”), with each holder of such shares receiving, for each share of Existing Company Stock held immediately prior to the Effective Time, a pro rata portion of the Merger Consideration. The 8,403 shares of Series B-1 Preferred Stock issued in connection with the Merger is referred to as the “Merger Consideration.”

Subject to the receipt by the Acquiror of stockholder approval (the “Requisite Approval”) for the issuance of shares of common stock in connection with the conversion of the Series B-1 Preferred Stock, each share of Series B-1 Preferred Stock will be convertible into 4,033 shares of common stock of the Acquiror, par value $0.00001 (the “Acquiror Common Stock”) with an initial conversion price of $1.24 per share, subject to adjustment and subject to a beneficial ownership limitation of 4.99% (or up to 19.99% at the election of the holder).

In addition, holders of Existing Company Stock shall be entitled to receive up to 122,927,528 pre-funded warrants (“Pre-Funded Warrants”) exercisable for a like number of shares of Acquiror Common Stock upon the new wholly-owned subsidiary meeting certain Milestone Events (as defined in the Merger Agreement). Such Pre-Funded Warrants will be issuable only in the event the Acquiror obtains the Requisite Approval and stockholder approval for the issuance of the Pre-Funded Warrants.

Financial Advisor Fee

In connection with the Merger, the Acquiror issued to E.F. Hutton & Co. (i)750 shares of Series B-1 Preferred Stock convertible, subject to Requisite Approval, into 3,024,749 shares of Acquiror Common Stock at a conversion price of $1.24 per share, subject to adjustment and subject to a beneficial ownership limitation of 4.99% (or up to 19.99% at the election of the holder), and agreed to issue (ii) Pre-Funded Warrants to purchase up to an aggregate of 11,066,114 shares of Acquiror Common Stock upon the achievement of the Milestone Events (subject to Requisite Approval and stockholder approval for the issuance of the Pre-Funded Warrants).

PIPE Financing

On April 30, 2026, Shuttle entered into a Securities Purchase Agreement (the “Securities Purchase Agreement”) with certain accredited investors party thereto (each, a “Purchaser” and collectively, the “Purchasers”), pursuant to which the Acquiror agreed to issue (i)1,910 newly designated Series B-2 convertible preferred stock, par value $0.00001 (the “Series B-2 Preferred Stock”) and (ii) common stock purchase warrants (the “Common Warrants” and together with the Series B-2 Preferred Stock, the “PIPE Securities”) to purchase up to 100% of the number of shares of Common Stock underlying the Series B-2 Convertible Preferred Stock as of the Closing Date, exercisable for a period of three (3) years at an exercise price of $1.03 per share (the “PIPE Financing”). On May 6, 2026, the PIPE Financing closed with the issuance of $9,550,000 of such Series B-2 Preferred Stock and Common Warrants.

Upon subsequent receipt of Stockholder Approval (as defined in the Securities Purchase Agreement), the shares of Series B-2 Convertible Preferred Stock will be automatically convertible (the “B-2 Share Conversion” and together with the B-1 Share Conversion, the “Conversions”), at a conversion price of $1.03 (subject to adjustment), into an aggregate of approximately 9,271,845 shares of Company Common Stock, subject to customary beneficial ownership limitations.

In addition, subject to the receipt of stockholder approval, the Acquiror agreed to issue to the Purchasers Pre-Funded Warrants to purchase up to 31,486,189 shares of Acquiror Common Stock in the aggregate (the “Milestone Shares”) if all three Milestone Events are achieved.

Under the Securities Purchase Agreement, the Acquiror is obligated to seek Stockholder Approval (as defined in the Securities Purchase Agreement) to, among other things, approve the issuance of Acquiror Common Stock upon the B-2 Conversion. The Pre-Funded Warrants will not be issuable until the Acquiror receives Stockholder Approval. Pursuant to the Securities Purchase Agreement, the Acquiror has agreed to file a registration statement (a “Registration Statement”) which will have been declared effective within 15 days of receipt of Stockholder Approval (or declared effective within 45 days of receipt of Stockholder Approval in the event the Securities and Exchange Commission (the “Commission”) determines to review the Registration Statement). Notwithstanding anything to contrary, in the event that no Milestone Shares (and/or Pre-Funded Warrants) have been issued pursuant to the Securities Purchase Agreement on or before the date that the Registration Statement is declared effective by the Commission, the Acquiror shall not be obligated to include any such Milestone Shares on such Registration Statement, and shall instead be obligated to include such Milestone Shares on a subsequent resale registration statement required to be filed and declared effective by the Commission within thirty (30) days of a Milestone Event.

Second Amendment of Asset Purchase Agreement

On April 30, 2026, Shuttle entered into a Second Amendment (the “Second Amendment”) to Asset Purchase Agreement (the “Asset Purchase Agreement”) with 1563868 B.C. Ltd., a Canadian limited corporation and the Company’s wholly owned subsidiary (“Purchaser”), 1542770 BC Ltd., a Canadian limited corporation (“Seller”), and ZhiTian (Andy) Zhang, an individual residing in Vancouver, Canada (“Seller Guarantor”), dated as of November 20, 2025, as amended by that First Amendment to Asset Purchase Agreement, dated December 23, 2025 (the “First Amendment” and the Asset Purchase Agreement, as amended, the “APA”).

Pursuant to the terms and conditions of the Second Amendment, on the Effective Date, the Acquiror (i) issued 270 shares of Series B-1 Convertible Preferred Stock to Seller (such shares, the “Seller B-1 Preferred Stock”) and (ii) will pay $3,646,642 in cash as payment of the First Installment Payment and Second Installment Payment (both as defined in the APA). In addition, pursuant to the Second Amendment, the Seller shall be entitled to receive up to three installments of Pre-Funded Warrants in connection with the Milestone Events, each installment exercisable for 1,281,438 shares of Common Stock (for a total of up to 3,844,314 shares of Common Stock if all three Milestone Events are achieved). In connection with the Amendment, Seller will return to the Acquiror for cancellation,320,496 shares of Common Stock issued to the Seller pursuant to the First Amendment.