Note 5 - Long-term Debt

3 Months Ended

Mar. 31, 2024

Notes to Financial Statements

Long-Term Debt [Text Block]

Note 5 — Long-Term Debt

SWK Loan

In November 2019, the Company entered into a credit agreement (the “SWK Credit Agreement”) with SWK Holdings Corporation (“SWK”) which provided for up to $10,000 in financing. The Company received proceeds of $5,000 at closing and borrowed an additional $5,000 upon the FDA approval of a second product developed by the Company. In March 2020, the Company and SWK amended the SWK Credit Agreement, and the Company borrowed an additional $2,000 in August 2020. The term of the SWK Credit Agreement is for five years, and borrowings bear interest at a rate of LIBOR 3-month plus 10.0%, subject to a stated LIBOR floor rate of 2.0%. A 2.0% unused credit limit fee was assessed during the first twelve months after the date of the SWK Credit Agreement and loan fees include a 5.0% exit fee based on the principal amounts drawn which is payable at the end of the term of the SWK Credit Agreement. The Company was required to maintain a minimum cash balance of $3,000, only pay interest on the debt until February 2022 and then pay 5.5% of the loan principal balance commencing on February 15, 2022 and then every three months thereafter until November 13, 2024 at which time the remaining principal balance is due. Borrowings under the SWK Credit Agreement are secured by the Company’s assets. The SWK Credit Agreement contains customary default provisions and covenants which limit additional indebtedness.

In connection with the initial $5,000 borrowed under the SWK Credit Agreement, the Company issued warrants to SWK to purchase 51,239 shares of the Company’s common stock with an exercise price of $5.86 per share. The relative fair value of these warrants was $226 and was estimated using BSM with the following assumptions: fair value of the Company’s common stock at issuance of $5.75 per share; seven-year contractual term; 95% volatility; 0% dividend rate; and a risk-free interest rate of 1.8%.

In connection with the additional $2,000 borrowed in August 2020, the Company issued warrants for 18,141 shares of its common stock at an exercise price of $6.62 per share. The relative fair value of the 18,141 warrants was $94 and was estimated using BSM with the following assumptions: fair value of the Company’s common stock at issuance of $6.85 per share; seven-year contractual term; 95% volatility; 0% dividend rate; and a risk-free interest rate of 0.4%.

These warrants (the “SWK Warrants”) are exercisable immediately and have a term of seven years from the date of issuance. The SWK Warrants are subject to a cashless exercise feature, with the exercise price and number of shares issuable upon exercise subject to change in connection with stock splits, dividends, reclassifications and other conditions.

In April 2022, the Company and SWK further amended the SWK Credit Agreement to allow for a deferral of loan principal payments until May 2023 and reduce the interest rate to LIBOR 3-month plus 8.0%, subject to a stated LIBOR floor rate of 2.0%. In accordance with the change, the Company has classified $5,020 as principal due in the next 12 months in its balance sheet at March 31, 2024. Because LIBOR was phased out as of June 30, 2023, the Company amended the Credit Agreement in August 2023 to refer to the secured overnight financing rate ("Term SOFR"), with an interest rate of Term SOFR plus 8.26%, subject to a stated Term SOFR floor rate of 5.0%.

Interest expense of $238 was recorded during the three months ended March 31, 2024, which included $25 of debt discount amortization. Interest expense of $265 was recorded during the three months ended March 31, 2023, which included $29 of debt discount amortization. As of March 31, 2024, $354 of accrued interest is included in accrued liabilities.

The table below reflects the future payments for the SWK loan principal and interest as of March 31, 2024.

	Amount
Remainder of 2024		5,905
Less: amount representing interest		(830	)
Loan payable, gross		5,075
Less: unamortized discount		(55	)
Debt, net of unamortized discount	$	5,020