The Company previously had outstanding amounts due under an agreement of $11.8 million (the “2016 Loan Agreement”). Borrowings under the 2016 Loan Agreement bore interest at an annual rate of 7.6% and were repaid in full on July 3, 2018. In addition, a final payment equal to 5% of the original principal amount was paid upon the final principal payment.

On March 20, 2019, the Company entered into the Loan Agreement with Hercules as administrative and collateral agent, and various other lenders, pursuant to which the Company may borrow under a term loan up to an aggregate principal amount of $40.0 million, to be made available in four tranches. The outstanding principal balance as of September 30, 2019 is $30.0 million. As of September 30, 2019, the Company had drawn down on the first and second of the four tranches, and its ability to draw down the remainder of the tranches is subject to certain time limitations, achievement of performance milestones and lender approval. The term loan bears interest at an annual rate equal to the greater of 8.55% and the prime rate of interest plus 2.55%. The Loan Agreement provides for interest-only payments until April 30, 2021, and repayment of the aggregate outstanding principal balance of the term loan in monthly installments starting on May 1, 2021 and continuing through April 1, 2023 (the “Maturity Date”). In addition, the Company paid a fee of $0.3 million upon closing and is required to pay a fee of 6.35% of the aggregate amount of advances under the Loan Agreement at maturity. At its option, the Company may elect to prepay all or a portion of the outstanding advances by paying the entire principal balance (or a portion thereof) and all accrued and unpaid interest thereon plus a prepayment charge equal to the following percentage of the principal amount being prepaid: 2% if an advance is prepaid during the first 12 months following the applicable advance date, 1% if an advance is prepaid after 12 months but prior to 24 months following the applicable advance date, and 0.5% if an advance is prepaid any time after 24 months following the applicable advance date but prior to the Maturity Date. In connection with the Loan Agreement, the Company granted Hercules a security interest in all of its personal property now owned or hereafter acquired, excluding intellectual property (but including the rights to payment and proceeds from the sale, licensing or disposition of intellectual property), and a negative pledge on intellectual property. The Loan Agreement also contains certain events of default, representations, warranties and non-financial covenants of the Company. If the Company fails to make payments when due, or breaches any operational covenant or has any event of default, this could have a material adverse effect on its business and financial condition.

	September 30, 2019
Principal amount of term loans	$	30,000
Debt discount current portion		—
Less: Current portion		—
Long-term debt, net of current portion		30,000
Debt discount net of current portion		(397	)
Long-term debt, net of discount and current portion	$	29,603