On April 17, 2020, the Company received loan proceeds of approximately $1.8 million (the “PPP Loan”) pursuant to the Paycheck Protection Program (“the PPP”) under the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”) administered by the U.S. Small Business Administration (the “SBA”).

The PPP Loan accrued interest at a rate of 1.00% per annum, and is subject to the standard terms and conditions applicable to loans administered by the SBA under the CARES Act. In February 2021, the Company applied for forgiveness of the PPP Loan, and in March 2021, the PPP Loan, including all accrued interest, was forgiven in full. A gain on forgiveness of Paycheck Protection Program loan of $1.8 million was recognized during the six months ended June 30, 2021. No gain on forgiveness of Paycheck Protection Program loan was recognized during the three months ended June 30, 2021.

In March 2019, the Company entered into a Loan and Security Agreement (the “LSA”) by and among Innovatus Life Sciences Lending Fund I, LP, a Delaware limited partnership (“Innovatus”), as collateral agent and the lenders listed on Schedule 1.1 thereto, including East West Bank. The LSA provided a first term loan of $17.5 million, a second term loan of $2.5 million and a third term loan of $5.0 million (collectively, the “Term Loans”) if the Company satisfied certain funding conditions. Interest on the Term Loans is due on the first of each month at a rate of 10.25% per annum in cash or a discounted rate of 7.25% in cash with 3.0% of the 10.25% per annum rate added to the principal of the loan and subject to accruing interest through the end of the interest only payment period, which ends March 1, 2022. At inception, the Company elected to pay interest in cash at a rate of 7.25% per annum and have 3.0% per annum of the interest added back to the outstanding principal. As of May 14, 2021 (the effective date of the loan payoff), the effective interest rate, including debt issuance costs, for the Term Loans was 16.7%.

The LSA provided for prepayment fees of 3.0% of the outstanding balance of the loan if the loan is repaid on or prior to March 14, 2020, 2.0% of the amount prepaid if the prepayment occurs after March 14, 2020 but prior to March 14, 2021, 1.0% of the amount prepaid after March 14, 2021 but prior to March 14, 2022 and 0% of the amount prepaid if the prepayment occurs thereafter. In addition, upon the final repayment of the total amounts borrowed, the Company is required to pay an end of term fee of $0.8 million. This end of term fee was being recognized as interest expense over the term of the LSA. As of June 30, 2021, the outstanding term loan with Innovatus was paid in full, including all accrued interest, the end of term fee, and a prepayment fee for a total of $17.0 million.