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Summary of Significant Accounting Policies (Policies) | 9 Months Ended
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Sep. 30, 2024
Summary of Significant Accounting Policies |
Basis of Presentation and Principles of Consolidation | Basis of Presentation and Principles of Consolidation The Company’s unaudited condensed consolidated financial statements (the “condensed consolidated financial statements”) have been prepared in conformity with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and include the accounts of its consolidated subsidiaries. Other shareholders’ interests in the Company’s subsidiaries, Z33 Bio, Inc. (“Z33”) and ZB17 LLC (“ZB17”), are shown in the condensed consolidated financial statements as redeemable noncontrolling interest and noncontrolling interest, respectively. All intercompany balances and transactions have been eliminated in consolidation. If necessary, reclassification of amounts previously reported have been made in the accompanying condensed consolidated financial statements in order to conform to current presentation. These condensed consolidated financial statements have been prepared in accordance with U.S. GAAP applicable to interim financial statements. These condensed consolidated financial statements are presented in accordance with the rules and regulations of the U.S. Securities and Exchange Commission (“SEC”) and do not include all disclosures normally required in annual consolidated financial statements prepared in accordance with U.S. GAAP. As such, the information included herein should be read in conjunction with the Company’s consolidated financial statements and accompanying notes as of and for the year ended December 31, 2023 (the “audited consolidated financial statements”) that were included in the Company’s Form 10-K filed with the SEC on March 28, 2024. In management’s opinion, these unaudited condensed consolidated financial statements have been prepared on the same basis as the annual consolidated financial statements and reflect all adjustments, which include normal recurring adjustments, necessary for the fair statement of the Company’s financial position as of September 30, 2024 and the results of operations for the three months ended September 30, 2024 and 2023 and for the nine months ended September 30, 2024 and 2023. The results of operations for the nine months ended September 30, 2024 are not necessarily indicative of the results to be expected for the full year ending December 31, 2024 or any other future interim or annual period.
Significant Accounting Policies | Significant Accounting Policies Except for the addition of property and equipment and the update for the Warrant Exchange, there have been no significant changes in the Company’s significant accounting policies from those that were disclosed in Note 2, Summary of Significant Accounting Policies, included in the Company’s consolidated financial statements in Form 10-K filed with the SEC on March 28, 2024.
Use of Estimates | Use of Estimates The preparation of condensed consolidated financial statements in conformity with U.S. GAAP requires the Company’s 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 condensed consolidated financial statements, as well as the reported amounts of expenses during the reporting period. Actual results could differ from those estimates. Significant estimates and assumptions reflected in the condensed consolidated financial statements relate to and include, but are not limited to, the fair value of Class A Ordinary Shares and other assumptions used to measure share-based compensation, the fair value of redeemable noncontrolling interest, and the fair value of public and private placement warrants.
Risks and Uncertainties | Risks and Uncertainties The Company is subject to risks common to early-stage companies in the biotechnology industry, including, but not limited to, development by the Company or its competitors of technological innovations, risks of failure of clinical studies, dependence on key personnel, protection of proprietary technology, compliance with government regulations, and ability to transition from preclinical manufacturing to commercial production of products. The Company’s future product candidates will require approvals from the U.S. Food and Drug Administration and comparable foreign regulatory agencies prior to commercial sales in their respective jurisdictions. There can be no assurance that any product candidates will receive the necessary approvals. If the Company was denied approval, approval was delayed or the Company was unable to maintain approval for any product candidate, it could have a material adverse impact on the Company. The Company has significant cash balances at financial institutions which throughout the year regularly exceed the federally insured limit of $250,000. Any loss incurred or a lack of access to such funds could have a significant adverse impact on the Company’s financial condition, results of operations, and cash flows.
Property and Equipment | Property and Equipment Property and equipment are stated at cost less accumulated depreciation. Depreciation expense is recognized using the straight-line method over the estimated useful life of each asset. Computer and office equipment are depreciated over three years. Expenditures for repairs and maintenance are recorded to expense as incurred.
Warrants | Warrants In connection with the Business Combination, the Company assumed JATT’s public warrant and private placement warrant liabilities. As a result of the recapitalization, the settlement provisions of the Public Warrants no longer preclude equity classification and the Public Warrants were reclassified to equity following the Business Combination. The Public Warrants and Private Placement Warrants (as defined herein) were exchanged for Class A Ordinary Shares during the three months ended September 30, 2024 (the “Warrant Exchange”). See Note 7. In connection with each of the April 2024 Private Placement and April 2023 Private Placement (each as defined herein), the Company issued pre-funded warrants instruments. Classification of the Public Warrants and Pre-Funded Warrants (as defined herein) as equity instruments and the Private Placement Warrants as liability instruments is based on management’s analysis of the guidance in ASC 815. The Company measured the private placement warrant liability at fair value each reporting period and at settlement value, based on the fair value of the Class A Ordinary Shares exchanged, upon the Warrant Exchange, with the change in fair value recorded as other (expense) income in the consolidated statements of operations. Upon completion of the Warrant Exchange, the warrant liability was extinguished and the Class A Ordinary Shares were recorded at fair value in stockholders’ equity. The Company measured the Public Warrants at the fair value of the equity instruments as of the Closing Date of the Business Combination. The Company measured the Pre-Funded Warrants at the fair value of the equity instruments as of the date of the April 2023 Private Placement, the April 2024 Private Placement or the Share Exchange (as defined herein), as applicable. See Note 7.
Net Loss Per Share | Net Loss Per Share Basic net loss per share is computed by dividing net loss attributable to Class A Ordinary Shareholders by the weighted-average number of Class A Ordinary Shares outstanding during the period. Diluted net loss per share excludes the potential impact of the Company’s convertible preferred shares and options to purchase Class A Ordinary Shares because their effect would be anti-dilutive due to the Company’s net loss for the period presented. Since the Company had a net loss in the periods presented, basic and diluted net loss per share are the same. The table below provides potentially dilutive securities not included in the calculation of the diluted net loss per share as of the periods presented because to do so would be anti-dilutive: ​
​ | ​ | ​ | ​ | ​
​ | ​ | September 30, | ​ | September 30,
​ |  | 2024 |  | 2023
Shares issuable upon exercise of options to purchase Class A Ordinary Shares | ​ | 9,318,906 | ​ | 5,681,471
Shares issuable upon exercise of Z33 Put Right | ​ | 2,000,000 | ​ | 2,000,000
Shares issuable upon vesting of restricted share units | ​ | 1,050,720 | ​ | 1,713,018
Restricted share awards | ​ | 374,995 | ​ | 499,993
Shares issuable upon exercise of warrants to purchase Class A Ordinary Shares | ​ | — | ​ | 12,809,996
Total | ​ | 12,744,621 | ​ | 22,704,478
Recent Accounting Pronouncements | Recent Accounting Pronouncements From time to time, new accounting pronouncements are issued by the Financial Accounting Standards Board (“FASB”) or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed, the impact of recently issued standards that are not yet effective will not have a material impact on the Company’s financial position, results of operations, or cash flows upon adoption. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (“ASU 2023-07”). ASU 2023-07 requires disclosure of significant segment expenses that are regularly provided to the chief operating decision maker and included within the segment measure of profit or loss. This guidance will be applied retrospectively and is effective for annual reporting periods in fiscal years beginning after December 15, 2023, and interim reporting periods in fiscal years beginning after December 31, 2024. The Company does not expect implementation of the new guidance to have a material impact on its consolidated financial statements and disclosures. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures (“ASU 2023-09”). ASU 2023-09 requires annual disclosures of specific categories in the rate reconciliation, additional information for reconciling items that meet a quantitative threshold and a disaggregation of income taxes paid, net of refunds. ASU 2023-09 also eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. ASU 2023-09 is effective for the Company beginning with the 2025 Annual Report on Form 10-K. Early adoption is permitted. ASU 2023-09 should be applied prospectively. Retrospective adoption is permitted. The Company is currently assessing the impact this standard will have on the Company’s consolidated financial statements.

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