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Long-term debt | 12 Months Ended
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Sep. 30, 2021
Long-term debt |
Long-term debt |
6. | Long-term debt
In September 2017, the Company entered into a Fourth Amended and Restated Loan and Security Agreement (the Fourth Loan) with SVB for loan amounts aggregating up to $20.0 million in a series of three advances. The first advance provides a principal amount of $10.0 million, the second advance provides a principal amount of $5.0 million and the third advance provides a principal amount of $5.0 million during their respective draw down periods. The draw down periods for the second and third advances under this agreement have expired as of January 31, 2018 and June 30, 2018, respectively and were not utilized. In connection with the first advance the Company issued a warrant to purchase 64,127 shares of common stock at an exercise price of $6.24 per share. The Fourth Loan contains a subjective acceleration clause under which the Fourth Loan could become due and payable to SVB in the event of a material adverse change in the Company’s business. The term of the loan was 51 months with an interest rate of prime plus 3.0% and a final payment fee of $0.7 million. The first advance, totaling $10.0 million, was drawn in September 2017 and comprised $7.8 million to refinance a prior loan and a new advance of $2.2 million. The debt provides for interest only payments through December 31, 2018 at which time monthly principal payments become due. In addition, the Company obtained a revolving loan facility for a principal amount of up to $10.0 million for which the principal amount outstanding under the revolving line would accrue interest at a floating per annum rate equal to one percentage point (1.00%) above the prime rate, which interest shall be payable monthly. The Company accounted for this transaction as a debt modification and did not incur any gain or loss relating to the modification. The Company had no amounts outstanding under this revolving loan facility at September 30, 2021 and 2020. The fees related to maintaining the revolving loan facility is $0.1 million, payable in annual installments. The Company’s credit facilities contain customary representations and warranties and customary affirmative and negative covenants applicable to the Company and its subsidiaries, including, among other things, restrictions on changes in business, management, ownership or business locations, indebtedness, encumbrances, investments, mergers or acquisitions, dispositions, maintenance of collateral accounts, prepayment of other indebtedness, distributions and transactions with affiliates. The credit facilities contain customary events of default subject in certain cases to grace periods and notice requirements, including (a) failure to pay principal, interest and other obligations when due, (b) material misrepresentations, (c) breach of covenants, conditions or agreements in the credit facilities, (d) default under material indebtedness, (e) certain bankruptcy events, (f) a material adverse change; (g) attachment, levy or restraint on business, (h) default with respect to subordinated debt, (i) cross default under the Company’s credit facilities, and (j) government approvals being revoked. As part of the Fourth Loan, all rights, title and interest to the Company’s personal property with the exception of the Company’s intellectual property, have been pledged as collateral, including cash and cash equivalents, short-term investments, accounts receivable, contractual rights to payment, license agreements, general intangibles, inventory and equipment. The Company was in compliance with all covenants under the loan and security agreement with SVB as of September 30, 2021 and 2020. Future maturities of the Fourth Loan as of September 30, 2021 are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
(in thousands) |  | Principal |  | Interest |  | Total
Years ending September 30, 2022 | ​ | $ | 833 | ​ | $ | 9 | ​ | $ | 842
​ | ​ | $ | 833 | ​ | $ | 9 | ​ | $ | 842
Less: Interest | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | (9)
Total amount of loan principal | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | 833
Less unamortized debt discount | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | (4)
Add: accretion of final payment fee | ​ | ​ | ​ | ​ | ​ | ​ | ​ |  | 723
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | $ | 1,552
​ The effective interest rate of the Company’s outstanding Fourth Loan was 11.6% at September 30, 2021.

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- Definition The entire disclosure for long-term debt. + 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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