Long-term debt	6 Months Ended
Jun. 30, 2022
Long-term debt
Long-term debt	6Long-term debt On June 14, 2013, the Company entered into a venture debt loan facility with Hercules Capital, Inc. (formerly known as Hercules Technology Growth Capital, Inc.) (“Hercules”). The facility was amended and restated in 2014, 2016, 2018 (“2018 Amended Facility”), January 2021 (“2021 Amended Facility”) and in December 2021 (“2021 Restated Facility”). On January 29, 2021, the Company drew down $35.0 million as part of the amendment of the facility at that time. Pursuant to the 2021 Restated Facility, Tranche A and Tranche B of the 2021 Amended Facility with a total outstanding balance of $70.0 million were consolidated into one tranche with a total commitment of $100.0 million. The Company drew down an additional $30.0 million at the time of the December 2021 amendment, resulting in total principal outstanding as of June 30, 2022 of $100.0 million. The 2021 Restated Facility extended the loan’s maturity date from June 1, 2023 until December 1, 2025. The interest-only period was extended from January 1, 2023 to December 1, 2024, or December 1, 2025 if, prior to June 30, 2024, either (a) the Biologics License Application (“BLA”) for AMT-061 is approved by the U.S. Food and Drug Administration (“FDA”) or (b) AMT-130 is advanced into a pivotal trial. The interest rate is adjustable and is the greater of (i) 7.95% and (ii) 7.95% plus the prime rate less 3.25% per annum. Under the 2021 Restated Facility, the Company owes a back-end fee of 4.85% of the outstanding debt. The Company is required to repay the facility in equal monthly installments of principal and interest between the end of the interest-only period and the maturity date. The Company continues to owe a $2.5 million back-end fee related to the 2021 Amended Facility which is due on June 1, 2023. The amortized cost (including interest due presented as part of accrued expenses and other current liabilities) of the 2021 Restated Facility was $102.6 million as of June 30, 2022, compared to $101.6 million as of December 31, 2021, and is recorded net of discount and debt issuance costs. The foreign currency loss on the facility in the three and six months ended June 30, 2022 was $6.3 million and $8.4 million, respectively compared to a foreign currency gain of $0.9 million and loss of $2.2 million during the same periods in 2021 for the 2018 Amended Facility and the 2021 Amended Facility. Interest expense associated with the 2021 Restated Facility during the three and six months ended June 30, 2022 was $2.6 million and $5.0 million, respectively compared to $1.8 million and $3.4 million, respectively, during the same periods in 2021 for the 2018 Amended Facility and the 2021 Amended Facility. As a covenant in the 2021 Restated Facility the Company has periodic reporting requirements and is required to keep a minimum cash balance deposited in bank accounts in the United States equivalent to the lesser of (i) 65% of the outstanding balance of principal due or (ii) 100% of worldwide cash and cash equivalents. This restriction on cash and cash equivalents only relates to the location of the cash and cash equivalents, and such cash and cash equivalents can be used at the discretion of the Company. The Company, beginning on April 1, 2023, is also required to keep a minimum of unrestricted cash of at least 50% of the loan amount outstanding. If, prior to June 30, 2024, either (a) the BLA for AMT-061 is approved by the FDA or (b) AMT-130 is advanced into a pivotal trial, the minimum cash covenant will be lowered to at least 30% of the loan amount outstanding and its effectiveness will be deferred to April 1, 2024. In combination with other covenants, the 2021 Restated Facility restricts the Company’s ability to, among other things, incur future indebtedness and obtain additional debt financing, to make investments in securities or in other companies, to transfer assets, to perform certain corporate changes, to make loans to employees, officers, and directors, and to make dividend payments and other distributions to its shareholders. The Company secured the facilities by directly or indirectly pledging its total assets of $701.2 million, with the exception of $89.2 million of cash and cash equivalents and other current assets held by uniQure N.V. and $85.1 million of other current assets and investment held by Corlieve Therapeutics SAS. The 2021 Restated Facility contains provisions that include the occurrence of a material adverse effect, as defined therein, which would entitle Hercules to declare all principal, interest and other amounts owed by the Company immediately due and payable. As of June 30, 2022, the Company was in material compliance with all covenants and provisions.

Long-term debt

6 Months Ended

Jun. 30, 2022

6Long-term debt

On June 14, 2013, the Company entered into a venture debt loan facility with Hercules Capital, Inc. (formerly known as Hercules Technology Growth Capital, Inc.) (“Hercules”). The facility was amended and restated in 2014, 2016, 2018 (“2018 Amended Facility”), January 2021 (“2021 Amended Facility”) and in December 2021 (“2021 Restated Facility”). On January 29, 2021, the Company drew down $35.0 million as part of the amendment of the facility at that time.

Pursuant to the 2021 Restated Facility, Tranche A and Tranche B of the 2021 Amended Facility with a total outstanding balance of $70.0 million were consolidated into one tranche with a total commitment of $100.0 million. The Company drew down an additional $30.0 million at the time of the December 2021 amendment, resulting in total principal outstanding as of June 30, 2022 of $100.0 million. The 2021 Restated Facility extended the loan’s maturity date from June 1, 2023 until December 1, 2025. The interest-only period was extended from January 1, 2023 to December 1, 2024, or December 1, 2025 if, prior to June 30, 2024, either (a) the Biologics License Application (“BLA”) for AMT-061 is approved by the U.S. Food and Drug Administration (“FDA”) or (b) AMT-130 is advanced into a pivotal trial. The interest rate is adjustable and is the greater of (i) 7.95% and (ii) 7.95% plus the prime rate less 3.25% per annum. Under the 2021 Restated Facility, the Company owes a back-end fee of 4.85% of the outstanding debt. The Company is required to repay the facility in equal monthly installments of principal and interest between the end of the interest-only period and the maturity date. The Company continues to owe a $2.5 million back-end fee related to the 2021 Amended Facility which is due on June 1, 2023.

The amortized cost (including interest due presented as part of accrued expenses and other current liabilities) of the 2021 Restated Facility was $102.6 million as of June 30, 2022, compared to $101.6 million as of December 31, 2021, and is recorded net of discount and debt issuance costs. The foreign currency loss on the facility in the three and six months ended June 30, 2022 was $6.3 million and $8.4 million, respectively compared to a foreign currency gain of $0.9 million and loss of $2.2 million during the same periods in 2021 for the 2018 Amended Facility and the 2021 Amended Facility.

Interest expense associated with the 2021 Restated Facility during the three and six months ended June 30, 2022 was $2.6 million and $5.0 million, respectively compared to $1.8 million and $3.4 million, respectively, during the same periods in 2021 for the 2018 Amended Facility and the 2021 Amended Facility.

As a covenant in the 2021 Restated Facility the Company has periodic reporting requirements and is required to keep a minimum cash balance deposited in bank accounts in the United States equivalent to the lesser of (i) 65% of the outstanding balance of principal due or (ii) 100% of worldwide cash and cash equivalents. This restriction on cash and cash equivalents only relates to the location of the cash and cash equivalents, and such cash and cash equivalents can be used at the discretion of the Company. The Company, beginning on April 1, 2023, is also required to keep a minimum of unrestricted cash of at least 50% of the loan amount outstanding. If, prior to June 30, 2024, either (a) the BLA for AMT-061 is approved by the FDA or (b) AMT-130 is advanced into a pivotal trial, the minimum cash covenant will be lowered to at least 30% of the loan amount outstanding and its effectiveness will be deferred to April 1, 2024. In combination with other covenants, the 2021 Restated Facility restricts the Company’s ability to, among other things, incur future indebtedness and obtain additional debt financing, to make investments in securities or in other companies, to transfer assets, to perform certain corporate changes, to make loans to employees, officers, and directors, and to make dividend payments and other distributions to its shareholders. The Company secured the facilities by directly or indirectly pledging its total assets of $701.2 million, with the exception of $89.2 million of cash and cash equivalents and other current assets held by uniQure N.V. and $85.1 million of other current assets and investment held by Corlieve Therapeutics SAS.

The 2021 Restated Facility contains provisions that include the occurrence of a material adverse effect, as defined therein, which would entitle Hercules to declare all principal, interest and other amounts owed by the Company immediately due and payable. As of June 30, 2022, the Company was in material compliance with all covenants and provisions.