EXICURE INC

1. Description of Business, Basis of Presentation and Going Concern

Description of Business

Exicure, Inc. was historically an early-stage biotechnology company focused on developing nucleic acid therapies targeting ribonucleic acid against validated targets. In September 2022, the Company announced a significant reduction in force, suspension of preclinical activities and halting of all research and development, and that the Company was exploring strategic alternatives to maximize stockholder value. The Company is engaging in a broader exploration of strategic alternatives. This effort involves exploring growth through transactions with potential partners that see opportunity in joining an existing, publicly-traded organization.

Throughout these unaudited condensed consolidated financial statements, the terms the “Company,” and “Exicure” refer to Exicure, Inc. and where appropriate, its wholly owned subsidiary, Exicure Operating Company. Exicure Operating Company holds all material assets and conducts all business activities and operations of Exicure, Inc.

Basis of Presentation

The accompanying unaudited condensed consolidated financial statements as of September 30, 2024 and December 31, 2023, and for the three and nine months ended September 30, 2024 and 2023, have been presented in conformity with accounting principles generally accepted in the United States of America (“GAAP”) and with instructions to Form 10-Q and Article 10 of Regulation S-X under the Securities Exchange Act of 1934, as amended.

Principles of Consolidation

The accompanying unaudited condensed consolidated financial statements include the accounts of Exicure and its wholly owned subsidiary, Exicure Operating Company. All intercompany transactions and accounts are eliminated in consolidation.

Reverse Stock Split

At the Company’s Special Meeting of Stockholders held on August 15, 2024, the Company’s stockholders approved a proposal to approve and adopt an amendment to the Company’s Amended and Restated Certificate of Incorporation to effect a reverse stock split of its shares of common stock, issued and outstanding or reserved for issuance, at a ratio within the range from 1-for-2 to 1-for-15, with such ratio to be determined in the discretion of the Board of Directors. On August 20, 2024, the Company’s Board of Directors adopted resolutions to effect as soon as reasonably practicable the reverse split of the issued and outstanding shares of the Common Stock at a ratio of 1-for-5.

The Company effected a reverse stock split of its Common Stock at a ratio of 1-for-5 as of 5:00 p.m. Eastern Time on August 27, 2024. No fractional shares were issued in connection with the reverse stock split. Stockholders of record who would otherwise be entitled to receive a fractional share received a full share in lieu thereof. An additional 102,837 shares were issued as a result of the fractional shares rounded up. All information presented in the accompanying unaudited condensed consolidated financial statements, unless otherwise indicated herein, assumes a 1-for-5 reverse stock split of the Company’s outstanding shares of Common Stock, and unless otherwise indicated, all such amounts and corresponding conversion price or exercise price data set forth herein have been adjusted to give effect to such assumed reverse stock split.

Unaudited Interim Financial Information

The accompanying interim condensed consolidated balance sheet as of September 30, 2024, the interim condensed consolidated statements of operations for the three and nine months ended September 30, 2024 and 2023, the interim condensed consolidated statements of changes in stockholders’ equity for the three and nine months ended September 30, 2024 and 2023, and the interim condensed consolidated statements of cash flows for the nine months ended September 30, 2024 and 2023 are unaudited. The interim unaudited condensed consolidated financial statements have been prepared on the same basis as the annual audited financial statements and with instructions to Form 10-Q and Article 10 of Regulation S-X under the Securities Exchange Act of 1934, as amended; and in the opinion of management, reflect all adjustments, which include only normal recurring adjustments necessary for the fair statement of the Company’s financial position as of September 30, 2024, the results of its operations for the three and nine months ended September 30, 2024 and 2023, and the results of its cash flows for the nine months ended September 30, 2024 and 2023. The financial data and other information disclosed in these notes related to the three and nine months ended September 30, 2024 and 2023 are unaudited. The results for the nine months ended September 30, 2024 are not necessarily indicative of results to be expected for the year ending December 31, 2024, or any other interim periods, or any future year or period. These interim condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes for the year ended December 31, 2023, included in the Company’s Annual Report on Form 10-K filed with the Securities and Exchange Commission (“SEC”) on June 6, 2024.

Going Concern

At each reporting period, the Company evaluates whether there are conditions or events that raise substantial doubt about the Company’s ability to continue as a going concern for a period of one year after the date that the financial statements are issued. The Company is required to make certain additional disclosures if it concludes substantial doubt exists and it is not alleviated by the Company’s plans or when its plans alleviate substantial doubt about the Company’s ability to continue as a going concern.

The accompanying unaudited condensed consolidated financial statements have been prepared assuming that the Company will continue as a going concern for a period of one year after the date that the financial statements are issued. As of September 30, 2024, the Company expects to incur significant expenses and negative cash flows for the foreseeable future. As of September 30, 2024, the Company’s cash and cash equivalents were $343. Management believes that, given the Company’s current cash position, operating plans and forecasted negative cash flows from operating activities over the next twelve months, there is substantial doubt about the Company’s ability to continue as a going concern within one year after the date these financial statements are issued. Substantial additional financing will be needed by the Company to fund its operations.

Management believes that the Company’s existing cash and cash equivalents are insufficient to continue to fund its operating expenses and additional funding is needed in the very near term. The Company has already engaged in significant cost reductions, so our ability to further cut costs and extend the Company’s operating runway is limited. As a result, substantial additional financing will be needed by the Company in the very near term to pay expenses, fund the ongoing exploration of strategic alternatives and pursue any alternatives that may be identified. There can be no assurance that such additional financing will be available and, if available, can be obtained on acceptable terms.

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

2. Significant Accounting Policies

The Company’s significant accounting policies are disclosed in the audited consolidated financial statements and the notes thereto, which are included in the in the Company’s Annual Report on Form 10-K (the “Annual Report”) for the year ended December 31, 2023 filed with the SEC on June 6, 2024. Since the date of those audited consolidated financial statements, there have been no material changes to the Company’s significant accounting policies.

Use of Estimates

The preparation of the 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 financial statements and the reported amounts of revenues and expenses during the reporting period. Management bases its estimates on certain assumptions which it believes are reasonable in the circumstances and while actual results could differ from those estimates, management does not believe that any change in those assumptions in the near term would have a significant effect on the Company’s financial position, results of operations or cash flows. Actual results in future periods could differ from those estimates.

Recent Accounting Pronouncements

In November 2023, the Financial Accounting Standards Board ("FASB") issued Accounting Standards Update (ASU) No. 2023-07, Segment Reporting (Topic 280), Improvements to Reportable Segment Disclosures which will require companies to disclose significant segment expenses that are regularly provided to the chief operating decision maker (“CODM”). The pronouncement is effective for annual filings for the year ended December 31, 2024. The Company is still in the process of assessing the full impact of adopting this standard on the enhanced disclosure requirements in the notes to the Company’s financial statements.

In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. Update No. 2023-09 aims to enhance the transparency and decision usefulness of income tax disclosures. Update No. 2023-09 modifies the rules on income tax disclosures to require entities to disclose (1) specific categories in the rate reconciliation, (2) the income or loss from continuing operations before income tax expense or benefit (separated between domestic and foreign) and (3) income tax expense or benefit from continuing operations (separated by federal, state, and foreign). Update 2023-09 also requires entities to disclose their income tax payments to international, federal, state and local jurisdictions, among other changes. Update No. 2023-09 is effective for fiscal years beginning after December 15, 2024. We expect to adopt Update No. 2023-09 prospectively. We are currently evaluating the potential impact of adopting this new guidance on our condensed consolidated financial statements and related disclosures.

3. Supplemental Balance Sheet Information

Prepaid expenses and other current assets

Other noncurrent assets

Property and equipment, net

Depreciation and amortization expense was $21 and $627 for the nine months ended September 30, 2024 and 2023, respectively.

Accrued expenses and other current liabilities

4. Leases

The Company’s lease arrangements at September 30, 2024 consist of (i) a lease for office space at its headquarters in Chicago, Illinois that commenced in July 2020 (the “Chicago Lease”) and (ii) a lease for office equipment (the “Office Equipment Lease”). The Chicago Lease and the Office Equipment Lease are classified as operating leases.

Chicago Lease

The Company has approximately thirty thousand square feet of office space in Chicago, Illinois. The original term (the “Original Term”) of the Chicago Lease is 10 years, commencing on July 1, 2020 (the “Commencement Date”), which is the date the premises were ready for occupancy under the terms of the Chicago Lease. The Company has options to extend the term of the Chicago Lease fortwo additional successive periods offive years each (the “Extension Periods”) at the then prevailing effective market rental rate.

The initial annual base rent during the Original Term is approximately $1,113 for the first 12-month period of the Original Term, payable in monthly installments beginning on the Commencement Date. Base rent thereafter is subject to annual increases of 3%, for an aggregate amount of $12,761 over the Original Term. The Company must also pay its proportionate share of certain operating expenses and taxes for each calendar year during the term. During the first 12-month period of the Original Term, the base rent and the Company’s proportionate share of operating expenses and taxes were subject to certain abatements.

The following table summarizes lease costs in the Company’s unaudited condensed consolidated statement of operations:

The Company made cash payments for operating leases $716 and $1,379 during the nine months ended September 30, 2024 and 2023, respectively. On June 11, 2024, the Company received a formal notice from its landlord indicating the landlord will draw on the restricted cash account designated for the lease as a result of past due rent for December 2023 through June 2024. The landlord continued to make monthly withdrawals from the restricted cash account and the Company is current on its rent payments. These draws are within the terms and conditions of the lease and the related restricted cash account.

Sublease of Office Space

The Company entered into a sublease agreement with Cyclopure, Inc. (the “Subtenant”) to sublease approximately 57% of its office space pursuant to that certain sublease agreement (the “Sublease Agreement”), dated as of May 4, 2023. The term of the Sublease Agreement began on May 15, 2023 and ends on June 30, 2030, the expiration date of the Chicago Lease. The first three months under the Sublease Agreement are rent free. Beginning August 15, 2023, the Company began charging the Subtenant for 57% of the base rent under the Chicago Lease, and the subtenant is responsible for its pro rata share of operating expenses and taxes payable. In 2024, the Company does not receive payment from the Subtenant as the Subtenant pays the Company’s landlord directly.

Refer to Note 15 Subsequent Events for information about Subtenant’s notice of termination of the Sublease Agreement.

The following table summarizes sublease receipts in the Company’s condensed consolidated statement of operations:

5. Investment in Convertible Notes Receivable

In May 2023, the Company entered intotwo subscription agreements to purchase non-guaranteed private placement convertible notes receivable (the “Notes Receivable”) for a subscription amount of $1 million each. The Notes Receivable mature in May 2026 and the yield to maturity is 4.5% per annum. The Company has the option to request that the issuer redeem part or the entire principal amount of the Notes Receivable on the first anniversary after the issue date and every three months thereafter before the maturity date. The redemption price will be one hundred percent (100%) of the Notes Receivable’s face value, plus accrued interest. The Company also has the ability to convert the debt into shares based on the number of shares computed by dividing the face value of each security by a calculated conversion price, which is subject to adjustment provisions, determined at the time of issuance. The securities may be converted from May 3, 2024, the first anniversary of the issue date of the first agreement, to April 15, 2026, one month prior to the maturity date to the second agreement. In March 2024, the Company notified the issuer of the Notes Receivable that it was exercising its redemption right with respect to the entire principal amount of the Notes Receivable after the first anniversary of their issue dates (May 3 and May 16, 2024, respectively) for an aggregate redemption price of $2.090 million (representing the principal amount plus 4.5% per annum yield to the redemption date). The issuer has taken the position that the Notes Receivable are not redeemable until August 3, 2024 and August 16, 2024, and as a result that redemption notice submitted in March were premature. We have attempted to redeem the $2 million aggregate principal amount of the convertible Notes Receivable in June 2024, but have not received a response to our most recent request.

The Company’s debt securities are classified as available-for-sale (“AFS”) pursuant to Accounting Standards Codification (“ASC”) 320 - Investments - Debt Securities. AFS securities are recorded at fair value. As of September 30, 2024 and December 31, 2023, management does not believe these AFS investments are recoverable and recorded them at a fair value of $0.

6. Debt

On May 3, 2024, the Company executed a promissory note (“Note”) and subsequently received a loan in the amount of $300 from an individual investor. All principal and accrued interest were due and payable on the earlier of (i) May 3, 2025 or (ii) upon an event of default, at such time, such amounts declared by the investor would become due and payable by Company. Interest accrued on this Note at 6.0% and was payable at maturity.

On June 3, 2024, the Company executed another promissory note (“DGP Note”) and subsequently received a loan in the amount of $700 from DGP, a related party. All principal and accrued interest were due and payable on the earlier of (i) March 25, 2025 or (ii) upon an event of default, at such time, such amounts declared by the investor would become due and payable by Company. Interest accrued on this DGP Note at 6.0% and was payable at maturity.

On September 11, 2024, the Company executedtwo Debt for Equity Exchange Agreements converting the existing debt and related interest described above into shares of its common stock. The Company exchanged in full satisfaction of the principal and accrued interest obligations on the Note into 101,991 of its common stock shares. The Company exchanged in full satisfaction of the principal and accrued interest obligations on the DGP Note into 237,223 shares of its common stock. As this was considered a troubled debt restructuring with a related party, the difference between fair value and book value was recognized within additional paid in capital.

7. Stockholders’ Equity

Preferred Stock

As of September 30, 2024 and December 31, 2023, the Company had 10,000,000 shares of preferred stock, par value $0.0001 authorized andno shares issued and outstanding.

Common Stock

As of September 30, 2024 and December 31, 2023, the Company had authorized 200,000,000 shares of common stock, par value $0.0001. As of September 30, 2024 and December 31, 2023, the Company had 2,172,323 shares and 1,832,988 shares issued and outstanding, respectively.

The holders of shares of the Company’s common stock are entitled toone vote per share on all matters to be voted upon by the Company’s stockholders and there are no cumulative rights. Subject to preferences that may be applicable to any outstanding preferred stock, the holders of shares of the Company’s common stock are entitled to receive ratably any dividends that may be declared from time to time by the Board of Directors (the “Board”) out of funds legally available for that purpose. In the event of the Company’s liquidation, dissolution or winding up, the holders of shares of the Company’s common stock are entitled to share ratably in all assets remaining after payment of liabilities, subject to prior distribution rights of preferred stock then outstanding. The Company’s common stock has no preemptive or conversion rights or other subscription rights. There are no redemption or sinking fund provisions applicable to the Company’s common stock. The outstanding shares of the Company’s common stock are fully paid and non-assessable.

September 2022 PIPE (Private Investment in Public Equity)

Securities Purchase Agreement

On September 26, 2022, the Company entered into a securities purchase agreement (the “Securities Purchase Agreement”) with CBI USA, Inc. (“CBI USA”), pursuant to which the Company agreed to issue and sell to CBI USA in a private placement an aggregate of 680,000 shares of Common Stock, at a purchase price of $8.00 per share. The private placement closed on February 24, 2023 (the “Closing Date”). The Company received gross proceeds of $5,440 from the September 2022 PIPE (or net proceeds of $4,597 after transaction expenses).

CBI USA funded the acquisition pursuant to the Securities Purchase Agreement through a loan from its affiliate, DGP Co., Ltd. (“DGP”). On June 23, 2023, DGP exercised its the option pursuant to the loan and acquired the 680,000 shares of Common Stock initially acquired by CBI USA pursuant to the Securities Purchase Agreement. DGP subsequently agreed to sell its shares to a third party, with the closing of 10% (68,000 shares) occurring in February 2024 and the remainder to close by or on October 31, 2024. The sale of the remainder did not close on October 31, 2024. However, on October 31, 2024, DGP agreed to sell 612,000 shares totwo different third parties, with such sales expected to close by February 2025 subject to satisfaction of certain conditions.

The Securities Purchase Agreement, as confirmed and clarified by that certain letter agreement, dated October 31, 2022, between the Company and CBI USA, provided CBI USA together with its affiliates and any “group” of which it or they are a member with the right to designate directors to the Company’s board of directors in proportion to the ownership of CBI USA and its affiliates and any such group. CBI USA and DGP have announced they expect to exercise such rights as a group. Together, they beneficially own 47% of the outstanding shares of Common Stock as of September 30, 2024 based on their most recent Schedule 13D amendment.

September 2022 Registration Rights Agreement

In connection with the Securities Purchase Agreement, the Company entered into a registration rights agreement with CBI USA (the “Registration Rights Agreement’). CBI USA assigned its rights under the Registration Rights Agreement to DGP when DGP acquired the 680,000 shares of Common Stock initially sold to CBI USA. Pursuant to the Registration Rights Agreement, the Company agreed to file a registration statement covering the resale of the shares of Common Stock sold pursuant to the Securities Purchase Agreement, to use reasonable best efforts to cause such registration statement to become effective as promptly as practicable, and to keep such registration statement continuously effective until the earlier of (i) the date the shares covered by such registration statement have been sold or may be resold pursuant to Rule 144 without restriction, or (ii) the date that istwo (2) years following the Closing Date.

In the event the registration statement was not filed within 90 days following the Closing Date, subject to certain limited exceptions, the Company agreed to make payments as liquidated damages in an amount equal to 0.5% of the aggregate amount invested in the shares of Common Stock pursuant to the Securities Purchase Agreement per 30-day period or pro rata for any portion thereof for each such month during which such event continues, subject to certain caps set forth in the Registration Rights Agreement. We have paid $27 to CBI USA and accrued $191 to DGP pursuant to this provision.

Registered Direct Offering

On December 16, 2021, the Company completed a securities purchase agreement (the “Purchase Agreement”) with certain institutional purchasers (the “Purchasers”) entered into on December 14, 2021, pursuant to which the Company offered to the Purchasers, in a registered direct offering priced at-the-market consistent with the rules of Nasdaq (the “Registered Direct Offering”), (i) an aggregate of 86,711 shares (the “Shares”) of the Company’s common stock, $0.0001 par value per share, (ii) pre-funded warrants to purchase up to an aggregate of 143,797 shares of Common Stock (the “Pre-Funded Warrants”), and (iii) warrants to purchase up to 115,253 shares of Common Stock (the “Warrants”). The combined purchase price of each share of Common Stock and accompanying Warrant is $49.8900 per share. The combined purchase price of each Pre-Funded Warrant and accompanying Warrant is $49.7400 (equal to the combined purchase price per share of Common Stock and accompanying Warrant, minus $0.15). The per share exercise price for the Warrants is $40.5155, the closing bid price of the Company’s Common Stock on December 13, 2021 (and as adjusted for the reverse stock split referenced in Note 1). The Warrants will be exercisable immediately from the closing December 16, 2021, and will expire on thefive-year anniversary of the date of issuance, or December 16, 2026. The Pre-Funded Warrants and Warrants, which met equity classification, were recognized as a component of permanent stockholders’ equity within additional paid-in-capital together with the net proceeds from the Registered Direct Offering. The gross proceeds to the Company from the Registered Direct Offering (excluding effect of subsequent exercises of pre-funded warrants) were $11,478 and net proceeds after deducting the placement agent’s fees and other offering expenses paid or payable by the Company were $10,226. The securities were offered by the Company pursuant to an effective shelf registration statement on Form S-3 (File No. 333-251555) previously filed with the Securities and Exchange Commission (the “SEC”) on December 21, 2020, and which was declared effective by the SEC on January 7, 2021 (the “Registration Statement”).

Each Warrant is exercisable forone share of Common Stock at an exercise price of $40.5155 per share. The Warrants are immediately exercisable as of the date of issuance of December 16, 2021 and will expire on thefive-year anniversary of the date of issuance, or December 16, 2026. The Pre-Funded Warrants were offered in lieu of shares of Common Stock to one of the Purchasers whose purchase of shares of Common Stock in the Registered Direct Offering would otherwise result in said Purchaser, together with its affiliates and certain related parties, beneficially owning more than 4.99% (or, at the election of the Purchaser,9.99%) of the Company’s outstanding Common Stock immediately following the consummation of the Registered Direct Offering. Each Pre-Funded Warrant is exercisable forone share of Common Stock at an exercise price of $0.15 per share. The Pre-Funded Warrants are immediately exercisable and may be exercised at any time until all of the Pre-Funded Warrants are exercised in full.

A holder (together with its affiliates) of the Warrant or Pre-Funded Warrant may not exercise any portion of the Warrant or Pre-Funded Warrant, as applicable, to the extent that the holder would own more than 4.99% (or, at the holder’s option upon issuance,9.99%) of the Company’s outstanding Common Stock immediately after exercise, as such percentage ownership is determined in accordance with the terms of the Warrant or Pre-Funded Warrant, as applicable. In lieu of making the cash payment otherwise contemplated to be made to the Company upon exercise of a Warrant in payment of the aggregate exercise price, the holder may elect instead to receive upon such exercise (either in whole or in part) the net number of shares of Common Stock determined according to a formula set forth in the Warrants, provided that such cashless exercise shall only be permitted if the Registration Statement is not effective at the time of such exercise or if the prospectus to which the Registration Statement is a part is not available for the issuance of shares of Common Stock to the Warrant holder.

In lieu of making the cash payment otherwise contemplated to be made to the Company upon exercise of a Pre-Funded Warrant in payment of the aggregate exercise price, the holder may elect instead to receive upon such exercise (either in whole or in part) the net number of shares of Common Stock determined according to a formula set forth in the Pre-Funded Warrants.

Common Stock Warrants

Warrants to purchase 115,253 shares of common stock at a price of $40.5155 per share were acquired in the December 2021 registered-direct offering transaction. The warrants were classified as equity. As a result of the closing of the September 2022 PIPE, a warrant holder elected to exercise their option within 30 days of the closing of the September 2022 PIPE (February 24, 2023) to receive a cash payout for the outstanding warrants in the amount of the Black-Scholes value of each warrant as prescribed in the warrant agreement. The Company paid $800 to this warrant holder on June 23, 2023 and 105,231 were settled as a result. As of September 30, 2024, warrants to purchase 10,022 shares of common stock at a price of $40.5155 per share that were acquired in the December 2021 registered-direct offering transaction remain outstanding.

8. Equity-Based Compensation

2017 Equity Incentive Plan

On September 22, 2017, the Company’s stockholders approved the Exicure, Inc. 2017 Equity Incentive Plan (the “2017 Plan”), which became effective on November 15, 2017. The 2017 Plan provides for the issuance of incentive awards of up to 38,950 shares of Exicure common stock, which includes 14,466 shares of Exicure common stock to be issued to officers, employees, consultants and directors, plus a number of shares not to exceed 25,559 that are subject to issued and outstanding awards under the Exicure OpCo 2015 Equity Incentive Plan (the “2015 Plan”) and were assumed in the merger transaction on September 26, 2017. Awards that may be awarded under the 2017 Equity Incentive Plan include non-qualified and incentive stock options, stock appreciation rights, bonus shares, restricted stock, restricted stock units, performance units and cash-based awards. The number of shares of common stock reserved for issuance under the 2017 Equity Incentive Plan automatically increases on January 1 of each year, beginning on January 1, 2020, by the lesser of (i)30,667 shares, (ii)5% of the total number of shares of its capital stock outstanding on December 31 of the preceding calendar year, or (iii) a lesser number of shares determined by the Compensation Committee of the Board (the “Compensation Committee”). No future awards will be made under the 2015 Plan upon the effectiveness of the 2017 Plan. On January 1, 2024, pursuant to the terms of the 2017 Plan, the number of awards that are reserved and may be awarded under the 2017 Plan was automatically increased by 30,667 awards.

As of September 30, 2024, the aggregate number of equity awards available for grant under the 2017 Equity Incentive Plan was 91,059. Awards granted under the 2017 Plan are contingent on the participants’ continued employment or provision of non-employee services and are subject to forfeiture if employment or continued service terminates for any reason.

Employee Stock Purchase Plan

The 2017 Employee Stock Purchase Plan (the “ESPP”) was adopted by the Board in September 2017 and approved by the Company’s stockholders in September 2017. Through the ESPP, eligible employees may authorize payroll deductions of up to 15% of their compensation to purchase common stock. The maximum number of shares that an employee may purchase on any exercise date in an offer period will be the smaller of (i)50 shares or (ii) such number of shares as has a fair market value (determined as of the offering date for such offer period) equal to $25,000 within one calendar year minus the fair market value of any other shares of common stock that are attributed to such calendar year. The purchase price per share at each purchase date is equal to 85% of the lower of (i) the closing market price per share of Exicure common stock on the employee’s offering date or (ii) the closing market price per share of Exicure common stock on the exercise date.

The ESPP provides that the number of shares reserved and available for issuance will automatically increase each January 1, beginning on January 1, 2018 and each January 1 thereafter through January 1, 2027, by the least of (i)2,000 shares; (ii)0.3% of the outstanding shares of common stock on the last day of the immediately preceding calendar year; or (iii) a lesser number of shares determined by the Board. On January 1, 2024, the number of shares of common stock available for issuance under the ESPP increased by 10,000 shares. As of September 30, 2024, there were 12,394 shares available for issuance under the ESPP.

Equity-based compensation expense is classified in the statements of operations as follows:

Unamortized equity-based compensation expense at September 30, 2024 was $16, which is expected to be amortized over a weighted-average period of 1.1 years.

The Company utilizes the Black-Scholes option-pricing model to determine the fair value of common stock option grants. The Black-Scholes option-pricing model was developed for use in estimating the fair value of traded options that have no vesting restrictions and are fully transferable. The model also requires the input of highly subjective assumptions. No options were granted during the nine months ended September 30, 2024. The following table presents the assumptions used in the Black-Scholes option-pricing model for stock options granted during the nine months ended September 30, 2023:

The expected term is based upon the “simplified method” as described in Staff Accounting Bulletin Topic 14.D.2. Currently, the Company does not have sufficient experience to provide a reasonable estimate of an expected term of its common stock options. The Company will continue to use the “simplified method” until there is sufficient experience to provide a more reasonable estimate in conformance with ASC 718-10-30-25 through 30-26. The risk-free interest rate assumptions were based on the U.S. Treasury bond rate appropriate for the expected term in effect at the time of grant. For stock options granted after December 31, 2021, the expected volatility is based on the volatility of shares of the Company. For stock options granted prior to January 1, 2022, the expected volatility is based on calculated enterprise value volatilities for publicly traded companies in the same industry and general stage of development. The estimated forfeiture rates were based on historical experience for similar classes of employees. The dividend yield was based on expected dividends at the time of grant.

The fair value of the underlying common stock and the exercise price for the common stock options granted during the nine months ended September 30, 2023 are summarized in the table below. No options were granted during the nine months ended September 30, 2024.

The weighted-average grant date fair value of common stock options granted in the nine months ended September 30, 2023 was $6.30 per common stock option.

A summary of common stock option activity as of the periods indicated is as follows:

A summary of restricted stock unit activity of the periods indicated is as follows:

The grant date fair value of restricted stock units is based on the Company’s closing stock price at the date of grant. At vesting, each outstanding restricted stock unit will be exchanged forone share of the Company’s common stock. Restricted stock units generally vest evenly on a quarterly basis over a period of 4 years in exchange for continued service provided by the restricted stock unit recipient during that vesting period.

9. Income Taxes

The Company incurred a pretax loss in each of the nine months ended September 30, 2024 and 2023, which consists entirely of loss in the United States and resulted inno provision for income tax expense during the periods then ended. The effective tax rate is 0% in each of the nine months ended September 30, 2024 and 2023 because the Company has generated tax losses and has provided a full valuation allowance against its deferred tax assets.

10. Loss Per Common Share

Basic loss per common share is calculated by dividing net loss by the weighted-average number of shares of common stock outstanding during the period. Diluted loss per common share is calculated using the treasury share method by giving effect to all potentially dilutive securities that were outstanding. Potentially dilutive options, restricted stock units and warrants to purchase common stock that were outstanding during the periods presented were excluded from the diluted loss per share calculation for the periods presented because such shares had an anti-dilutive effect due to the net loss reported in those periods. Therefore, basic and diluted loss per common share is the same for each of the nine months ended September 30, 2024 and 2023.

The following is the computation of loss per common share for the three and nine months ended September 30, 2024 and 2023:

The outstanding securities presented below were excluded from the calculation of loss per common share, for the periods presented, because such securities would have been anti-dilutive due to the Company’s loss per share during that period:

11. Fair Value Measurements

ASC Topic 820, Fair Value Measurement, establishes a three-tier fair value hierarchy, which prioritizes the inputs used in measuring fair value, as follows: Level 1 Inputs - unadjusted quoted prices in active markets for identical assets or liabilities accessible to the reporting entity at the measurement date; Level 2 Inputs - other than quoted prices included in Level 1 inputs that are observable for the asset or liability, either directly or indirectly, for substantially the full term of the asset or liability; and Level 3 Inputs - unobservable inputs for the asset or liability used to measure fair value to the extent that observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at measurement date.

Assets measured at fair value on a recurring basis as of December 31, 2023 are as follows:

The Company uses the market approach and Level 1 and Level 2 inputs to value its cash equivalents and Level 2 inputs to value its short-term investments. The Company uses the market approach and Level 3 inputs to value its liabilities. There were no liabilities measured at fair value on a recurring basis as of as of December 31, 2023 nor September 30, 2024.

There were no transfers between Level 1, 2, or 3, during the nine months ended September 30, 2024, and 2023. Both observable and unobservable in puts were used to determine fair value of the positions that the Company classified within the Level 3 category. Unrealized gains and losses associated within the Level 3 category include changes in fair value that were attributable to both observable and unobservable inputs.

12. Commitments and Contingencies

Legal Proceedings

On December 13, 2021, Mark Colwell filed a putative securities class action lawsuit against the Company, David A. Giljohann and Brian C. Bock in the United States District Court for the Northern District of Illinois, captioned Colwell v. Exicure, Inc. et al., Case No. 1:21-cv-0663. On February 4, 2021, plaintiff filed an amended putative securities class action complaint. On March 20, 2023, the court entered an order appointing James Mathew as lead plaintiff and Bleichmar Fonti & Auld LLP as lead counsel in the action pursuant to the Private Securities Litigation Reform Act of 1995. On May 26, 2023, lead plaintiff filed a second amended complaint against the Company, Dr. Giljohann, Mr. Bock, and Grant Corbett. The second amended complaint alleges that Dr. Giljohann, Mr. Bock, and Dr. Corbett made materially false and/or misleading statements related to the Company’s clinical programs purportedly causing losses to investors who acquired Company securities between January 7, 2021 and December 10, 2021. The second amended complaint does not quantify any alleged damages but, in addition to attorneys’ fees and costs, lead plaintiff seeks to recover damages on behalf of himself and others who acquired the Company’s stock during the putative class period at allegedly inflated prices and purportedly suffered financial harm as a result. On October 8, the court granted preliminary approval of the settlement in the securities class action and set a schedule for final approval proceedings, including a final approval hearing on January 13, 2025.

The proposed settlement described above will be fully covered by insurance. However, the settlement will include a reservation of rights by the insurers against the Company for the unsatisfied portion of its self insured retainer. As a result, the Company recorded an accrual as of September 30, 2024 for the amount of the unsatisfied retainer of approximately $1.14 million needed to bridge the $2.5 million retainer that the Company is liability for under its self insured retention. The Company is currently negotiating with the insurers to attempt to settle for an amount less than the full retainer amount.

On March 1, 2022, Kapil Puri filed a shareholder derivative lawsuit on behalf of the Company in the United States District Court for the Northern District of Illinois, against Dr. Giljohann and Mr. Bock, Jeffrey L. Cleland, Elizabeth Garofalo, Bosun Hau, Bali Muralidhar, Andrew Sassine, Matthias Schroff, James Sulat and Timothy Walbert, captioned Puri v. Giljohann, et al., Case No. 1:22-cv-01083. On March 8, 2022, Yixin Sim filed a similar shareholder derivative lawsuit in the same court against the same individuals, captioned Sim v. Giljohann, et al., Case No. 1:22-cv-01217. On April 25, 2022, Stourbridge Investments LLC filed a similar shareholder derivative lawsuit against the same individuals in the United States District Court for the District of Delaware, captioned Stourbridge Investments LLC v. Exicure, Inc. et al., Case No. 1:22-cv-00526. Based on similar factual allegations presented in the Colwell complaint, described above, the Puri, Sim, and Stourbridge complaints (collectively, the

“Derivative Complaints”) allege that the defendants caused the Company to issue false and/or misleading statements in the proxy statement for its 2021 Annual Meeting of Stockholders regarding risk oversight, code of conduct, clinical program and compensation matters, among other things, in violation of federal securities law, and committed breaches of fiduciary duties. The Derivative Complaints also assert that Dr. Giljohann and Mr. Bock are liable for contribution under the federal securities laws. The Puri and Stourbridge complaints further assert state law claims for unjust enrichment, and the Puri complaint additionally asserts state law claims for abuse of control, gross mismanagement and corporate waste. The plaintiffs do not quantify any alleged damages in the Derivative Complaints, but seek restitution for damages to the Company, attorneys’ fees, costs, and expenses, as well as an order directing that certain proposals for strengthening board oversight be put to a vote of the Company’s shareholders. This lawsuit is expected to settle after the securities litigation lawsuit.

On March 18, 2022, James McNabb, through counsel, sent a written demand to the Company (the “Demand Letter”) demanding that the Board of Directors investigate certain allegations and commence proceedings on the Company’s behalf against certain of the Company’s officers and directors for alleged breaches of fiduciary duties and corporate waste. All of the Derivative Cases have been stayed pending a decision on any motion to dismiss that may be filed in the Colwell case. Further, pursuant to agreement, the Demand Letter is being held in abeyance and any related statute of limitations tolled pending such motion and decision.

On October 3, 2023, a former employee filed a complaint against the Company and its executives related to the former employee’s separation from the Company. The parties proceeded with paper discovery and this matter did not settle at an in-person settlement conference on July 17, 2024. As a result, we are in the discovery phase of this litigation

Leases

Refer to Note 4, Leases, for a discussion of the commitments associated with the Company’s lease agreements.

13. Related-Party Transactions

Pursuant to a Consulting Agreement, effective as of September 25, 2022, between the Company and Alta Companies LTD (“Alta”), the Company paid Alta $218 on February 27, 2023 for a consulting fee earned as a result of the September 2022 PIPE closing. Paul Kang, a director of the Company since February 2023 and the CEO of the Company since August 2023, is the President of Alta.

Also, refer to the Note and the DGP Note in Footnote 6.

14. License and Purchase Agreements

License Agreement

On February 5, 2024, the Company entered into a patent license agreement to develop cavrotolimod for potential treatment for hepatitis with a private clinical stage biopharmaceutical company. Under the terms of the agreement, this biopharmaceutical company will receive an exclusive license in the field of hepatitis to all of the Company’s relevant patents. $500 was paid to the Company after the execution of this agreement. This payment was recognized as revenue in accordance with ASC 606, Revenue from Contracts with Customers. The Company will also be entitled to modest royalties on future net sales on all licensed technology during the term of the licensed patents. The Company determined that the amount of variable consideration would be constrained until the period the uncertainty related to the consideration is relieved. This patent license agreement was assigned to, and assumed by, the purchaser pursuant to this purchase agreement, but any royalties would be passed through to the Company.

Purchase Agreement

On September 27, 2024, the Company entered into and closed the sale of certain assets pursuant to an Asset Purchase Agreement (the “Purchase Agreement”). The assets sold to the purchaser consist of the Company’s historical biotechnology intellectual property and other assets and include the Company’s spherical nucleic acid-related technology, research and development programs, and clinical assets (the “Sold Assets”). The Company will receive gross proceeds of $1,500 from the sale of the Sold Assets. The gross proceeds were recognized as other income. The Company will be entitled to royalties and license fees in connection with future sales or licenses derived from the Sold Assets for a period of 10 years as set out in further detail in the purchase agreement. The Company determined that the amount of variable consideration would be constrained until the period the uncertainty related to the consideration is relieved. We received $150 in September and $550 in October. The remaining $800 will be received within 6 months from the date of the Purchase Agreement.

15. Subsequent Events

Termination of Sublease Agreement

On October 21, 2024, the Subtenant provided notice that it is exercising its right to termination under the Sublease, effective as of November 30, 2024. However, the Company sent a formal notice disputing the subtenant’s right to terminate the Sublease as the provisions for termination were not met.

Common Stock Purchase Agreement

In an agreement dated November 6, 2024 and executed on November 12, 2024, the Company agreed to sell and issue to HiTron Systems Inc. (“HiTron”)433,333 shares of common stock, par value $0.0001 per share, for $1,300, at a purchase price of $3.00 per share. The closing of this transaction is expected to occur within 10 days from its execution. After execution, HiTron will be a related party of the Company.

On November 13, 2024, in a subsequent agreement, the Company agreed to sell and issue to HiTron 2,900,000 additional shares of common stock, par value $0.0001 per share, for $8,700, at a purchase price of $3.00 per share. The closing of the investment pursuant to this subsequent agreement is conditioned on stockholder approval, among other customary conditions.