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Long-term debt | 9 Months Ended
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Sep. 30, 2020
Long-term debt |
Long-term debt | 6. Long-term debt On September 30, 2020 (the “Closing Date”), the Borrowers entered into the Loan Agreement with Hercules, which provided for aggregate maximum borrowings of up to $40.0 million, consisting of (i) a term loan of $15.0 million, which was funded on the Closing Date, (ii) subject to customary conditions, an additional term loan of up to $15.0 million available from the Closing Date through March 15, 2021, and (iii) subject to the Borrowers achieving certain performance milestones and satisfying customary conditions and available until March 15, 2022, an additional term loan of $10.0 million. Borrowings under the Loan Agreement bear interest at an annual rate equal to the greater of (i) 8.85% or (ii) 5.60% plus the Wall Street Journal prime rate. Payments under the Loan Agreement are interest only until the first principal payment is due on November 1, 2022 (or if the Borrowers achieve the certain performance milestones, the interest only period is extended with the first principal payment due on May 1, 2023), followed by equal monthly payments of principal and interest through the scheduled maturity date on October 1, 2024 (the “Maturity Date”). At Borrowers’ option, the Borrowers may prepay all or any portion greater than $5.0 million of the outstanding borrowings, subject to a prepayment premium equal to (i) 2.0% of the principal amount outstanding if the prepayment occurs during the first year following the Closing Date, (ii) 1.5% of the principal amount outstanding if the prepayment occurs during the second year following the Closing Date, and (iii) 1.0% of the principal amount outstanding if the prepayment occurs thereafter but prior to the Maturity Date. The Loan Agreement also provides for an end of term charge (the “End of Term Charge”), payable upon maturity or the repayment of obligations under the Loan Agreement, equal to 5.0% of the principal amount repaid. Borrowings under the Loan Agreement are collateralized by substantially all of the Borrower’s personal property and other assets, other than their intellectual property. Hercules has a perfected first-priority security interest in certain cash accounts. The Loan Agreement contains customary affirmative and restrictive covenants and representations and warranties, including a covenant against the occurrence of a change in control, as defined in the agreement. There are no financial covenants. The Loan Agreement also includes customary events of default, including payment defaults, breaches of covenants following any applicable cure period, cross acceleration to third-party indebtedness, certain events relating to bankruptcy or insolvency, and the occurrence of certain events that could reasonably be expected to have a material adverse effect. Upon the occurrence of an event of default, a default interest rate of an additional 5.0% may be applied to the outstanding principal and interest payments due, and Hercules may declare all outstanding obligations immediately due and payable and take such other actions as set forth in the Loan Agreement. The Company has determined that the risk of subjective acceleration under the material adverse events clause is not probable and therefore has classified the outstanding principal in long-term liabilities based on scheduled principal payments. The Company incurred fees and transaction costs totaling $0.6 million associated with the initial term loan, which are recorded as a reduction to the carrying value of the long-term debt in the consolidated balance sheets. The fees, transaction costs, and the End of Term Charge are amortized to interest expense through the Maturity Date using the effective interest method. The effective interest rate was 12.1% at September 30, 2020. The Company assessed all terms and features of the Loan Agreement in order to identify any potential embedded features that would require bifurcation. As part of this analysis, the Company assessed the economic characteristics and risks of the debt. The Company determined that all features of the Loan Agreement are clearly and closely associated with a debt host and, as such, do not require separate accounting as a derivative liability. Interest expense for the three and nine month periods ended September 30, 2020 was immaterial. Long-term debt consisted of the following (in thousands):
|  | September 30,
|  | 2020
Term loan payable |  | $ | 15,000
Unamortized debt issuance costs |  |  | (573)
Carrying value of term loan |  | $ | 14,427
Future principal payments, including the End of Term Charge, are as follows (in thousands):
|  | September 30,
|  | 2020
2020 |  | $ | —
2021 |  |  | —
2022 |  |  | 1,148
2023 |  |  | 7,262
2024 |  |  | 7,340
Total |  | $ | 15,750
In addition, the Company granted Hercules the right to purchase up to an aggregate of $2.0 million of the Company’s equity securities sold to investors in certain subsequent financing upon the same terms and conditions afforded to such other investors. On October 1, 2020, Hercules purchased 98,100 ADSs, representing the same number of ordinary shares, at a public offering price of $19.05 per ADS ordinary share pursuant to the Sales Agreement, resulting in net proceeds of $1.8 million.

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -URI http://asc.fasb.org/topic&trid=2208564 + Details
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