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Debt | 12 Months Ended
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Dec. 31, 2024
Debt |
Debt | 6. Debt On September 30, 2020, Bicycle Therapeutics plc and its subsidiaries (the “Borrowers”) entered into a loan and security agreement (the “Loan Agreement”) with Hercules, as amended from time to time, which provided for aggregate maximum borrowings of up to $75.0 million, of which the Company had drawn down an aggregate of $30.0 million in 2021 and 2020. Payments on borrowings under the Loan Agreement were interest-only until April 1, 2025 and interest was paid at an annual rate of the Wall Street Journal prime rate plus 4.55%, with a minimum annual rate of at least 8.05%, capped at a rate no greater than 9.05%, and the Loan Agreement included a 5.0% end-of-term charge payable upon maturity or repayment. The scheduled maturity date was July 1, 2025. On July 9, 2024, the Company repaid all amounts outstanding, including the outstanding borrowings of $30.0 million, accrued and unpaid interest of $0.1 million, an end-of-term charge of $1.5 million and a prepayment charge of $0.3 million, for a total aggregate payment of $31.9 million, and terminated the Loan Agreement. The Company recognized a loss on extinguishment of debt of $1.0 million during the year ended December 31, 2024 in connection with the repayment and termination of the Loan Agreement. Interest expense associated with the Loan Agreement for the years ended December 31, 2024, 2023 and 2022 was $1.6 million, $3.1 million and $3.2 million, respectively. Upon termination of the Loan Agreement, all security interests granted to the secured parties thereunder were terminated and released. ​ Debt consisted of the following (in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31, | ​ | December 31,
​ |  | 2024 |  | 2023
Term loan payable | ​ | $ | — | ​ | $ | 30,000
End of term charge | ​ | ​ | — | ​ | ​ | 946
Unamortized debt issuance costs | ​ | ​ | — | ​ | ​ | (248)
Carrying value of term loan | ​ | $ | — | ​ | $ | 30,698
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- Definition The entire disclosure for information about short-term and long-term debt arrangements, which includes amounts of borrowings under each line of credit, note payable, commercial paper issue, bonds indenture, debenture issue, own-share lending arrangements and any other contractual agreement to repay funds, and about the underlying arrangements, rationale for a classification as long-term, including repayment terms, interest rates, collateral provided, restrictions on use of assets and activities, whether or not in compliance with debt covenants, and other matters important to users of the financial statements, such as the effects of refinancing and noncompliance with debt covenants. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 6 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481544/470-10-50-6 Reference 2: 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