Our long-term debt consists of notes payable associated with our 2021 Term Loan, 2018 Notes and Paycheck Protection Program, each of which is described in further detail below. Long-term notes payable were as follows (in thousands):

	March 31, 2021			December 31. 2020
2021 Term Loan	$	30,000		$	—
2018 Notes		—			24,972
Paycheck Protection Program		3,125			3,107
Unamortized debt discount and issuance costs		(90	)		(313	)
		33,035			27,766
Less: current maturities		2,707			11,840
Long-term notes payable	$	30,328		$	15,926

On March 19, 2021 (Effective Date), the Company entered into a Loan and Security Agreement (the 2021 Term Loan) by and between Silicon Valley Bank, a California corporation (SVB or Lender) and the Company, as borrower, whereby subject to the terms and conditions of the 2021 Term Loan, SVB advanced to the Company an original principal amount of $30 million.

The 2021 Term Loan provides for an “interest-only” period from the Effective Date through February 28, 2023, with interest due and payable monthly on the first calendar day of each month, provided however, if the Company achieves a revenue milestone of at least $65 million on a trailing twelve-month basis as of the end of any calendar month ending on or prior to September 30, 2022, the interest-only period shall automatically be extended through February 28, 2024. Beginning on the first calendar day of the month following the end of the interest-only period, the 2021 Term Loan shall be payable in (i) consecutive equal installments of principal through March 1, 2026, plus (ii) monthly payments of accrued interest. The principal amount outstanding under the 2021 Term Loan shall accrue interest at a floating per annum rate equal to the greater of (i) 2.00% above the prime rate, or (ii) 5.25%, which interest, in each case, shall be payable monthly. Changes to the interest rate applicable to the 2021 Loan based on changes to the prime rate shall be effective on the effective date of any change to the prime rate.

The Company’s final payment, due at maturity on March 1, 2026, shall include all outstanding principal and accrued and unpaid interest, lender fees and expenses, of which the majority will include a final payment of $2.4 million, and all other sums, if any, that shall have become due and payable hereunder with respect to the 2021 Term Loan. The $2.4 million final payment will be amortized as interest expense over the term of the loan. The Company has the option to prepay, prior to maturity, the total outstanding principal amount plus accrued and unpaid interest, subject to a prepayment penalty of 3% of the principal amount if paid prior to the first anniversary of the Effective Date, 2% of the principal amount if paid on or after the first anniversary but prior to the second anniversary of the Effective Date, 1% of the principal amount if paid on or after the second anniversary but prior to October 19, 2025, and 0% thereafter.

The Company granted the Lender a security interest in substantially all of the Company’s assets. The 2021 Term Loan requires the Company to comply with a minimum liquidity ratio covenant (as defined) by the 2021 Term Loan of not less than 0.95 to 1.00, and has a trailing six month rolling minimum revenue requirement of not less than 70% of the Company’s projected revenue for each such quarter. In addition, the 2021 Term Loan contains certain covenants limiting the ability of the Company to, among other things, incur future debt, transfer assets except for the ordinary course of business, make acquisitions, pay dividends or make other certain restricted payments, or sell assets, subject to certain exceptions, without the prior written consent of the Lender. Failure to comply with the covenants and loan requirements may result in an event of default. In the event of a default, including, among other things, our failure to make any payment when due or our failure to comply with any covenant under the 2021 Term Loan, the Lender may elect to declare all amounts outstanding to be immediately due and payable, and may proceed against the collateral granted to them to secure such indebtedness, including a royalty-free license or other right to use all of our intellectual property without charge.

In February 2018, the Company issued long-term debt of $23.0 million to Innovatus Life Sciences Lending Fund (Innovatus or Lender) (the 2018 Notes). Innovatus is also a holder of the Company’s common stock.

At the time of issuance, the Company paid a facility fee of $0.2 million and issued a warrant to Innovatus, with an initial estimated fair value of $0.3 million, for the purchase of 613,333 shares of Series G preferred stock. The facility fee and the estimated warrant fair value were recorded as debt discount and is amortized to interest expense over the term of the 2018 Notes. The 2018 Notes bore annual interest at 10%, of which 7.5% was payable in cash, with the remaining 2.5% added to principal through December 31, 2020. Total interest added to principal was $1.7 million as of March 31, 2021 and December 31, 2020.

On March 19, 2021, in connection with entering into the 2021 Term Loan agreement with SVB, the Company repaid all outstanding principal, accrued and unpaid interest, and prepayment fees in the amount of $25.9 million due under the 2018 Notes and contemporaneously terminated the related Loan and Security Agreement, dated as of February 23, 2018, as amended, between Innovatus and the Company. As a result of the extinguishment of the 2018 Notes, the Company recognized a loss on debt extinguishment of $0.7 million during the three months ended March 31, 2021.

In April 2020, the Company entered into a loan pursuant to the Paycheck Protection Program under the CARES Act, as administered by the U.S. Small Business Administration (the SBA). The loan, in the principal amount of $3.1 million (the PPP Loan), was disbursed by JPMorgan Chase Bank (JPM) pursuant to a Paycheck Protection Program Promissory Note and Agreement (the Note and Agreement).

The PPP Loan matures on the two-year anniversary of the funding date, April 2022, and bears interest at a fixed rate of 1.00% per annum. Monthly principal and interest payments, less the amount of any potential forgiveness (as discussed below), will commence in September 2021. The Company did not provide any collateral or guarantees in connection with the PPP Loan, nor did the Company pay any facility charge to obtain the PPP Loan. The Note and Agreement provides for customary events of default, including those relating to failure to make payment, bankruptcy, breaches of representations and material adverse effects. The Company may prepay the principal of the PPP Loan at any time without incurring any prepayment charges.

All or a portion of the PPP Loan may be forgiven by the SBA and JPM upon application by the Company. Under the CARES Act, loan forgiveness is available for the sum of documented payroll costs, covered rent payments, and covered utilities during the eight-week period beginning on the approval date of the PPP Loan. For purposes of the CARES Act, payroll costs exclude compensation of an individual employee earning more than $100,000, prorated annually. Not more than 40% of the forgiven amount may be for non-payroll costs. Forgiveness is reduced if full-time headcount declines, or if salaries and wages for employees with salaries of $100,000 or less annually are reduced by more than 25%. The Company currently intends to repay the PPP loan in accordance with the underlying terms and conditions. To the extent we elect to seek forgiveness, the Company cannot assure that the PPP Loan will be forgiven, in whole or in part. If the loan is forgiven in part or in whole, and legal release is received, the Company will reduce the liability by the amount forgiven and record a gain on extinguishment in the statements of operations.

Scheduled principal repayments (maturities) of long-term obligations as of March 31, 2021 were as follows (in thousands):

Year Ending December 31,	As of March 31, 2021
Remainder of 2021	$	2,707
2022		416
2023		8,333
2024		10,000
2025		10,000
Thereafter		1,669
	$	33,125

Cash paid for interest was $0.6 million and $0.1 million for the three months ended March 31, 2021 and 2020, respectively.