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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 10-Q

☒  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended June 30, 2024

OR

☐  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to

Commission File Number  001-37368

ADAPTIMMUNE THERAPEUTICS PLC

(Exact name of Registrant as specified in its charter)

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60 Jubilee Avenue, Milton Park

Abingdon, Oxfordshire OX14 4RX

United Kingdom

(Address of principal executive offices)

(44) 1235 430000

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

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Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ⌧ Yes    ◻ No

Indicate by check mark whether the registrant has submitted electronically, every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ⌧ Yes    ◻ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standard provided pursuant to Section 13(a) of the Exchange Act. ◻

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). ☐ Yes    ⌧ No

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As of August 8, 2024, the number of outstanding ordinary shares par value £0.001 per share of the Registrant is 1,534,472,670.

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General information

In this Quarterly Report on Form 10-Q (“Quarterly Report”), “Adaptimmune,” the “Group,” the “Company,” “we,” “us” and “our” refer to Adaptimmune Therapeutics plc and its consolidated subsidiaries, except where the context otherwise requires.

Information Regarding Forward-Looking Statements

This Quarterly Report contains forward-looking statements that involve risks and uncertainties, as well as assumptions that, if they never materialize or prove incorrect, could cause our results to differ materially from those expressed or implied by such forward-looking statements. We make such forward-looking statements pursuant to the safe harbor provisions of the Private Securities Litigation Reform Act of 1995 and other federal securities laws. All statements other than statements of historical facts contained in this Quarterly Report are forward-looking statements. In some cases, you can identify forward-looking statements by words such as “believe,” “may,” “will,” “estimate,” “continue,” “anticipate,” “intend,” “expect” or the negative of these words or other comparable terminology.

Any forward-looking statements in this Quarterly Report reflect our current views with respect to future events or to our future financial performance and involve known and unknown risks, uncertainties and other factors that may cause our actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by these forward-looking statements. Factors that may cause actual results to differ materially from current expectations include, among other things, those discussed in Part I, Item 1A “Risk Factors” of our Annual Report on Form 10-K for the year ended December 31, 2023 filed with the Securities and Exchange Commission (the “SEC”) on March 6, 2024. Given these uncertainties, you should not place undue reliance on these forward-looking statements. Except as required by law, we assume no obligation to update or revise these forward-looking statements for any reason, even if new information becomes available in the future.

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This Quarterly Report also contains estimates, projections and other information concerning our industry, our business, and the markets for certain diseases, including data regarding the estimated size of those markets, and the incidence and prevalence of certain medical conditions. Information that is based on estimates, forecasts, projections, market research or similar methodologies is inherently subject to uncertainties and actual events or circumstances may differ materially from events and circumstances reflected in this information. Unless otherwise expressly stated, we obtained this industry, business, market and other data from reports, research surveys, studies and similar data prepared by third parties, industry, medical and general publications, government data and similar sources.

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PART I — FINANCIAL INFORMATION

Item 1. Financial Statements.

ADAPTIMMUNE THERAPEUTICS PLC

UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS

(In thousands, except share data)

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See accompanying notes to unaudited condensed consolidated financial statements.

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ADAPTIMMUNE THERAPEUTICS PLC

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands, except share and per share data)

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See accompanying notes to unaudited condensed consolidated financial statements.

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ADAPTIMMUNE THERAPEUTICS PLC

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/LOSS

(In thousands)

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See accompanying notes to unaudited condensed consolidated financial statements.

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ADAPTIMMUNE THERAPEUTICS PLC

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGE IN EQUITY

(In thousands, except share data)

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See accompanying notes to unaudited condensed consolidated financial statements.

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ADAPTIMMUNE THERAPEUTICS PLC

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CHANGE IN EQUITY

(In thousands, except share data)

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See accompanying notes to unaudited condensed consolidated financial statements.

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ADAPTIMMUNE THERAPEUTICS PLC

UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands)

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See accompanying notes to unaudited condensed consolidated financial statements.

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ADAPTIMMUNE THERAPEUTICS PLC

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1 — General

Adaptimmune Therapeutics plc is registered in England and Wales. Its registered office is 60 Jubilee Avenue, Milton Park, Abingdon, Oxfordshire, OX14 4RX, United Kingdom. Adaptimmune Therapeutics plc and its subsidiaries (collectively “Adaptimmune” or the “Company”) is a commercial-stage biopharmaceutical company primarily focused on the treatment of solid tumor cancers with cell therapies. The Company’s proprietary platform enables it to identify cancer targets, find and develop cell therapy candidates active against those targets and produce therapeutic candidates for administration to patients.

The Company is subject to a number of risks similar to other biopharmaceutical companies in the clinical development stage including, but not limited to, the need to obtain adequate additional funding, possible failure of preclinical programs or clinical programs, the need to obtain marketing approval for its cell therapies, competitors developing new technological innovations, the need to successfully commercialize and gain market acceptance of its cell therapies, the need to develop a reliable commercial manufacturing process, the need to commercialize any cell therapies that may be approved for marketing, and protection of proprietary technology. If the Company does not successfully commercialize any of its cell therapies, it will be unable to generate product revenue or achieve profitability. The Company had an accumulated deficit of $1,002,155,000 as of June 30, 2024.

Note 2 — Summary of Significant Accounting Policies

(a)          Basis of presentation

The condensed consolidated financial statements of Adaptimmune Therapeutics plc and its subsidiaries and other financial information included in this Quarterly Report are unaudited and have been prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) and are presented in U.S. dollars. All significant intercompany accounts and transactions between the Company and its subsidiaries have been eliminated on consolidation.

The unaudited condensed consolidated financial statements presented in this Quarterly Report should be read in conjunction with the consolidated financial statements and accompanying notes included in the Company’s Annual Report on Form 10-K filed with the SEC on March 6, 2024 (the “Annual Report”). The balance sheet as of December 31, 2023 was derived from audited consolidated financial statements included in the Company’s Annual Report but does not include all disclosures required by U.S. GAAP. The Company’s significant accounting policies are described in Note 2 to those consolidated financial statements.

Certain information and footnote disclosures normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted from these interim financial statements. However, these interim financial statements include all adjustments, consisting only of normal recurring adjustments, which are, in the opinion of management, necessary to fairly state the results of the interim period. The interim results are not necessarily indicative of results to be expected for the full year.

(b)          Use of estimates in interim financial statements

The preparation of interim financial statements, in conformity with U.S. GAAP and SEC regulations, requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, disclosure of contingent assets and liabilities at the date of the interim financial statements and reported amounts of revenues and expenses during the reporting period. Estimates and assumptions are made in various areas, including in relation to valuation allowances relating to deferred tax assets, revenue recognition, the fair value of assets acquired, liabilities assumed and consideration transferred in business combinations, and estimation of the incremental borrowing rate for operating leases. If actual results differ from the Company’s estimates, or to the extent these estimates are adjusted in future periods, the Company’s results of operations could either benefit from, or be adversely affected by, any such change in estimate.

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(c)          Fair value measurements

The Company is required to disclose information on all assets and liabilities reported at fair value that enables an assessment of the inputs used in determining the reported fair values. The fair value hierarchy prioritizes valuation inputs based on the observable nature of those inputs. The hierarchy defines three levels of valuation inputs:

Level 1 - Quoted prices in active markets for identical assets or liabilities

Level 2 - Inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly

Level 3 - Unobservable inputs that reflect the Company's own assumptions about the assumptions market participants would use in pricing the asset or liability

The carrying amounts of the Company’s cash and cash equivalents, restricted cash, accounts receivable, accounts payable and accrued expenses approximate fair value because of the short-term nature of these instruments. The fair value of marketable securities, which are measured at fair value on a recurring basis is detailed in Note 6, Fair value measurements.

(d)          Significant concentrations of credit risk

The Company held cash and cash equivalents of $211,810,000, marketable securities of $2,979,000 and restricted cash of $2,866,000 as of June 30, 2024. The cash and cash equivalents and restricted cash are held with multiple banks and the Company monitors the credit rating of those banks. The Company maintains cash balances in excess of amounts insured by the Federal Deposit Insurance Corporation in the United States and the U.K. Government Financial Services Compensation Scheme in the United Kingdom. The Company’s investment policy limits investments to certain types of instruments, such as money market instruments, corporate debt securities and commercial paper, places restrictions on maturities and concentration by type and issuer and specifies the minimum credit ratings for all investments and the average credit quality of the portfolio.

The Company had three customers during the three and six months ended June 30, 2024 which are Galapagos, Genentech and GSK. There were accounts receivable of $2,335,000 as of June 30, 2024 and $821,000 as of December 31, 2023. The Company has been transacting with Galapagos since 2024, Genentech since 2021 and GSK since 2014, during which time no credit losses have been recognized. As of June 30, 2024, no allowance for expected credit losses is recognized on the basis that the possibility of credit losses arising on its receivables as of June 30, 2024 is considered to be remote. As of June 30, 2024 there are no receivables, either accrued or billed, due from Genentech that are no longer recoverable following the termination of the Genentech Collaboration and License Agreement.

Management analyzes current and past due accounts and determines if an allowance for credit losses is required based on collection experience, credit worthiness of customers and other relevant information. The process of estimating the uncollectible accounts involves assumptions and judgments and the ultimate amounts of uncollectible accounts receivable could be in excess of the amounts provided.

(e) New accounting pronouncements

Adopted in the current period

Improvements to Reportable Segment Disclosures

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In November 2023, the FASB issued ASU 2023-07 – Segment Reporting (Topic 280) – Improvements to Reportable Segment Disclosures, which improves segment disclosure requirements, primarily through enhanced disclosure requirements for significant segment expenses. The improved disclosure requirements apply to all public entities that are required to report segment information, including those with only one reportable segment. The Company adopted the guidance in the fiscal year beginning January 1, 2024. There was no impact on the Company’s reportable segments identified and additional required disclosures have been included in Note 15.

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In March 2024, the FASB issued ASU 2024-02 - Codification Improvements—Amendments to remove References to the Concepts Statements, which contains amendments to the Codification that remove references to various FASB Concepts Statements. The amendments apply to all reporting entities within the scope of the affected accounting guidance and are effective for public business entities for fiscal years beginning after December 15, 2024, with early adoption permitted for all entities. The Company adopted the guidance in the fiscal year beginning January 1, 2024. There was no impact on the Company’s financial statements.

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To be adopted in future periods

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Improvements to Income Tax Disclosures

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In December 2023, the FASB issued ASU 2023-09 – Income Taxes (Topic 740) – Improvements to Income Tax Disclosures, which improves income tax disclosures primarily relating to the rate reconciliation and income taxes paid information. This includes a tabular reconciliation using both percentages and reporting currency amounts, covering various tax and reconciling items, and disaggregated summaries of income taxes paid during the period. For public business entities, the guidance is effective for annual periods beginning after December 15, 2024, with early adoption permitted. The Company intends to adopt the guidance in the fiscal year beginning January 1, 2025. The Company is currently evaluating the impact of the guidance on its Consolidated financial statements.

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(f) Borrowings

The Company recognizes borrowings comprised solely of contractual payments on fixed or determinable dates that are issued solely for cash equal to their face value, at face value with the difference between the face amount and proceeds received upon issuance shown as either a discount or premium.

These notes are subsequently measured using the Interest Method, with the total interest being measured as the difference between the actual amount of cash received by the Company and the total amount agreed to be repaid. The interest charge in a given period is based on the effective interest rate, which is the rate implicit in the note based on the contractual cash flows. The discount or premium on the note is amortized as interest expense over the life of the note so as to produce a constant rate of interest.

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Note 3 — Revenue

The Company generates development revenue from collaboration agreements with customers. The Company had three revenue-generating contracts with customers in the three and six months ended June 30, 2024, compared to three customers in the three months ended June 30, 2023, and two customers in the six months ended June 30, 2023: a termination and transfer agreement with GSK that was effective on April 6, 2023, a collaboration and license agreement with Galapagos signed on May 30, 2024, a strategic collaboration and license agreement with Genentech and a collaboration agreement with Astellas that was terminated as of March 6, 2023. The collaboration and licence agreement with Genentech was terminated in April 2024 and the termination is effective from October 2024.

Revenue comprises the following categories (in thousands):

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Deferred revenue decreased by $39,756,000 from $178,033,000 at December 31, 2023 to $138,277,000 at June 30, 2024 due to revenue recognized during the period of $133,011,000 that was included in deferred revenue at December 31, 2023 and a $1,211,000 decrease caused by the change in the exchange rate between pound sterling and the U.S. dollar from £1.00 to $1.27 at December 31, 2023 to £1.00 to $1.26 at June 30, 2024. This was partially offset by a payment of $85,000,000 from Galapagos and milestones totalling $9,583,000 from GSK that were met and paid or accrued at June 30, 2024.

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The aggregate amount of the transaction price that is allocated to performance obligations that are unsatisfied or partially satisfied under the agreements as of June 30, 2024 was $154,393,000.

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The Galapagos Collaboration and Exclusive License Agreement

On May 30, 2024, the Company entered into a clinical collaboration agreement with Galapagos NV. The agreement includes an option for Galapagos to exclusively license the TCR T-cell therapy candidate uza-cel, manufactured on Galapagos’ decentralized manufacturing platform, in head and neck cancer and potential future solid tumor indications. Under the agreement, we will conduct a clinical proof-of-concept trial (the “POC Trial”) to evaluate the safety and efficacy of uza-cel produced on Galapagos’ decentralized manufacturing platform in patients with head and neck cancer.

The Company will receive initial payments of $100 million, comprising $70 million upfront and $30 million of research and development funding of which $15 million is due upfront and $15 million is due once the first patient is infused in the POC Trial, option exercise fees of up to $100 million (the amount depending on the number of indications in relation to which the option is exercised), additional development and sales milestone payments of up to a maximum of $465 million, plus tiered royalties on net sales. The $70 million upfront payment and $15 million of upfront research and development funding was received in June 2024.

The Company determined that Galapagos is a customer and has accounted for the agreement under ASC 606 Revenue from Contracts with Customers. The Company has identified a performance obligation relating to the various activities required to complete the POC trial and a material right associated with the exclusive license option.

The aggregate transaction price at inception of the agreement was $100,000,000 comprising the $70,000,000 upfront payment and the $30,000,000 research and development funding. The fees for the exclusive license option exercise and development milestone payments are not considered probable as of June 30, 2024 and have not been included in the transaction price. The sales milestones and royalties for future sales of therapies have not been included within the transaction price as of June 30, 2024 because they are sales-based and would be recognized when the subsequent sales occur.

The aggregate transaction price is allocated to the performance obligations depending on the relative standalone selling price of the performance obligations. In determining the best estimate of the relative standalone selling price, the Company considered the internal pricing objectives it used in negotiating the contract, together with internal data regarding the expected costs and a standard margin on those costs, for completing the POC Trial. The residual approach was used to value the material right associated with the exclusive license option as the Company has not previously sold uza-cel on a standalone basis and has not established a price for uza-cel.

The Company expects to satisfy the POC Trial obligation over time over the period that the trial is completed, based on an estimate of the percentage of completion of the trial determined based on the costs incurred on the trial as a percentage of the total expected costs. The revenue allocated to the material right associated with the exclusive licence option will be recognized from the point that the option is either exercised and control of the license has passed to Galapagos or the option lapses.

The amount of the transaction price that is allocated to performance obligations that are unsatisfied or partially satisfied under the agreement as of June 30, 2024 was $100,000,000, of which $44,400,000 is allocated to the POC Trial performance obligation and $55,600,000 is allocated to the material right for the exclusive option.

The Genentech Collaboration and License Agreement

On April 12, 2024 the Company announced the termination of the collaboration with Genentech in relation to the research, development and commercialization of cancer targeted allogeneic T-cell therapies which will be effective from October 7, 2024. The termination was accounted for as a contract modification on a cumulative catch-up basis. The termination did not change the nature the performance obligations identified but resulted in a reduction in the transaction price as the additional payments and variable consideration that would have been due in periods after October 7, 2024 will now never be received.

The Company originally expected to satisfy the performance obligations relating to the initial ‘off-the-shelf’ collaboration targets and the personalized therapies as development progressed and recognized revenue based on an estimate of the percentage of completion of the project determined based on the costs incurred on the project as a percentage of the total expected costs. The Company expected to satisfy the performance obligations relating to the material rights to designate additional ‘off-the-shelf’ collaboration targets from the point that the options would have been exercised and then as development progressed, in line with the initial ‘off-the-shelf’ collaboration targets, or at the point in time that the rights expired. The Company expected to satisfy the performance obligations relating to the material rights to extend the research term from the point that the options would have been exercised and then over the period of the extension, or at the point in time that the rights expired.

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The aggregate remaining transaction price that had not yet been recognized as revenue as of the date of the termination was $146,301,000 which included the remaining deferred income that had not been recognized as revenue as of the date of the modification and the variable consideration to be billed under the collaboration until the effective date of the termination that is still considered probable. The termination resulted in a cumulative catch-up adjustment at the date of the termination of $101,348,000.

The amount of the transaction price that is allocated to performance obligations that are unsatisfied or partially satisfied under the Genentech agreement as of June 30, 2024 was $24,515,000. Of this amount $7,926,000 is allocated to the research services and rights granted for the initial ‘off-the-shelf’ collaboration targets, $5,086,000 is allocated to the research services and rights granted for the personalized therapies, $7,764,000 is allocated to the material rights to designate the additional ‘off-the-shelf’ collaboration targets, $2,991,000 is allocated to the material right for the first option to extend the research term and $748,000 is allocated to the material right for the option to extend the research term a second time.

The GSK Termination and Transfer Agreement

On April 6, 2023, the Company and GSK entered into a Termination and Transfer Agreement (the “Termination and Transfer Agreement”) regarding the return of rights and materials comprised within the PRAME and NY-ESO cell therapy programs. The parties will work collaboratively to ensure continuity for patients in ongoing lete-cel clinical trials forming part of the NY-ESO cell therapy program.

As part of the agreement, sponsorship and responsibility for the ongoing IGNYTE and long-term follow-up (“LTFU”) trials relating to the NY-ESO cell therapy program will transfer to Adaptimmune. In return for this, Adaptimmune received an upfront payment of £7.5 million in June 2023 following the signing of the agreement and milestone payments of £3 million, £12 million and £6 million in September and December 2023 and June 2024, respectively. A further milestone payment of £1.5 million had been met and accrued, but not billed, at June 30, 2024.

The Company determined that GSK is a customer and has accounted for the agreement under ASC 606 Revenue from Contracts with Customers. The agreement is accounted for as a separate contract from the original GSK Collaboration and License Agreement. The Company has identified the following performance obligations under the agreement: (i) to take over sponsorship for the IGNYTE trial and (ii) to take over sponsorship for the LTFU trial.

The aggregate transaction price at inception of the agreement was $37,335,000 comprising the total £30,000,000 upfront and milestone payments. No value was ascribed to non-cash consideration and there was no variable consideration identified. The aggregate transaction price is allocated to the performance obligations depending on the relative standalone selling price of the performance obligations. In determining the best estimate of the relative standalone selling price, the Company considered the internal pricing objectives it used in negotiating the contract, together with internal data regarding the expected costs and a standard margin on those costs, for completing the trials. The amount of the transaction price allocated to the performance obligation is recognized as or when the Company satisfies the performance obligation.

The Company expects to satisfy the performance obligations over time from the point that sponsorship of the active trials that make up the trial transfers and then over the period that the trial is completed, based on the number of patients transferred and still actively enrolled to date on the trial at a given period-end relative to the total estimated periods of active patient enrollment over the estimated duration of the trial.

The Company considers that this depicts the progress of the completion of the trials under the Termination and Transfer Agreement, as the status of patients on the trial is not directly affected by decisions that the Company might make relating to its own development of the NY-ESO cell therapy program.

The amount of the transaction price that is allocated to performance obligations that are unsatisfied or partially satisfied under the agreement as of June 30, 2024 was $29,878,000, of which $13,958,000 is allocated to the IGNYTE performance obligation and $15,920,000 is allocated to the LTFU performance obligation.

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The Astellas Collaboration Agreement

The Company and Universal Cells mutually agreed to terminate the Astellas Collaboration Agreement as of March 6, 2023 (the “Termination Date”). In connection with the termination, all licenses and sublicenses granted to either party pursuant to the Collaboration Agreement ceased as of the Termination Date. There were no termination penalties in connection with the termination; however the Company is still entitled to receive reimbursement for research and development work performed up to and including a period of 30 days after the Termination Date.

The termination was accounted for as a contract modification on a cumulative catch-up basis. No performance obligations were identified as a result of the modification as there were no further goods or services to be provided by the Company and the modification resulted in the remaining unsatisfied and partially satisfied performance obligations under the collaboration becoming fully satisfied. The aggregate transaction price of the contract modification was $42,365,000 which included the remaining deferred income that had not been recognized as revenue as of the date of the modification and variable consideration from the remaining reimbursement income to be billed under the collaboration at the end of the 30 day period after the Effective Date. The transaction price of the modification was recognized in full in March 2023 and there is no remaining transaction price allocated to performance obligations that are unsatisfied or partially satisfied under, no remaining deferred income relating to, the agreement as of June 30, 2024 and no revenue was recognized in 2024.

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Note 4 — Profit/(loss) per share

The following tables reconcile the numerator and denominator in the basic and diluted profit/(loss) per share computation (in thousands):

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The dilutive effect of 132,547,250 and 132,941,666 weighted stock options outstanding for the three and six months ended June 30, 2024 respectively, and 201,688,491 for the three and six months ended June 30, 2023 have been excluded from the diluted profit/(loss) per share calculation for the three and six months ended June 30, 2024 and 2023 because they would have an antidilutive effect on the profit/(loss) per share for the period.

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Note 5 — Accumulated other comprehensive (loss)/income

The Company reports foreign currency translation adjustments and the foreign exchange gain or losses arising on the revaluation of intercompany loans of a long-term investment nature within Other comprehensive (loss) income. Unrealized gains and losses on available-for-sale debt securities are also reported within Other comprehensive (loss) income until a gain or loss is realized, at which point they are reclassified to Other (expense) income, net in the Condensed Consolidated Statement of Operations.

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The following tables show the changes in Accumulated other comprehensive (loss) income (in thousands):

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Note 6 — Fair value measurements

Assets and liabilities measured at fair value on a recurring basis based on Level 1, Level 2, and Level 3 fair value measurement criteria as of June 30, 2024 are as follows (in thousands):

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The Company estimates the fair value of available-for-sale debt securities with the aid of a third party valuation service, which uses actual trade and indicative prices sourced from third-party providers on a daily basis to estimate the fair value.

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If observed market prices are not available (for example securities with short maturities and infrequent secondary market trades), the securities are priced using a valuation model maximizing observable inputs, including market interest rates.

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Note 7 — Marketable securities – available-for-sale debt securities

As of June 30, 2024, the Company has the following investments in marketable securities (in thousands):

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The aggregate fair value (in thousands) and number of securities held by the Company (including those classified as cash equivalents) in an unrealized loss position as of June 30, 2024 and December 31, 2023 are as follows:

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As of June 30, 2024, no allowance for expected credit losses has been recognized in relation to the security in an unrealized loss position. This is because the unrealized loss is not severe, does not represent a significant proportion of the total fair market value of the investment and the security has an investment-grade credit rating. Furthermore, the Company does not intend to sell the debt security in an unrealized loss position, believes that it has the ability to hold the debt security to maturity, and it is currently unlikely that the Company will be required to sell this security before the recovery of the amortized cost.

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Note 8 — Other current assets

Other current assets consisted of the following (in thousands):

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On January 19, 2024, a receipt of £24.2 million ($30.8 million) was received from HMRC relating to the Research and development credits receivable.

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Note 9 — Operating leases

The Company has operating leases in relation to property for office, manufacturing and research facilities.

The following table shows the lease costs for the six months ended June 30, 2024 and 2023 and the weighted-average remaining lease term and the weighted-average discount rate as at June 30, 2024 and 2023:

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