Notes Payable, Preferred Stock and Stock Purchase Warrants (Tables)

9 Months Ended

Sep. 30, 2024

Notes Payable, Preferred Stock and Stock Purchase Warrants

Schedule of carrying amounts outstanding under the Company's notes payable

The following carrying amounts were outstanding under the Company’s notes payable as of September 30, 2024 and December 31, 2023 (in thousands):

	September 30, 2024
	Principal ($)	Debt (Discount) Premium ($)⁽¹⁾	Issuance Costs ($)	Carrying Amount ($)
2025 Notes	20,399	(1,006)	(17)	19,376
Loan and Security Agreement	35,000	(280)	(272)	34,448
	December 31, 2023
	Principal ($)	Debt (Discount) Premium ($)⁽¹⁾	Issuance Costs ($)	Carrying Amount ($)
2025 Notes	20,399	(3,090)	(52)	17,257
Loan and Security Agreement	25,000	(733)	(329)	23,938

(1) Includes accretion of end of term fees payable at maturity

Schedule of interest expense related to the notes payable

Interest expense related to the notes payable for the nine months ended September 30, 2024 and 2023 was as follows (dollars in thousands):

	Nine Months Ended September 30, 2024
	Interest Rate	Interest ($)	Debt Discount and Fees ($)⁽¹⁾	Issuance Costs ($)	Total Interest Expense ($)
2025 Notes	5.25%	803	2,083	35	2,921
Loan and Security Agreement	9.90%	2,635	651	59	3,345
Total		3,438	2,734	94	6,266
	Nine Months Ended September 30, 2023
	Interest Rate	Interest ($)	Debt Discount and Fees ($)⁽¹⁾	Issuance Costs ($)	Total Interest Expense ($)
2023 Notes	5.25%	69	120	-	189
2025 Notes	5.25%	1,881	4,808	81	6,770
PHC Notes	8.00%	700	1,442	88	2,230
Loan and Security Agreement	9.90%	158	38	3	199
Total		2,808	6,408	172	9,388

(1) Includes accretion of end of term fees payable at maturity

Schedule of future maturities

The following are the scheduled maturities of the Company’s notes payable (including end of term fees) as of September 30, 2024 (in thousands):

2025		20,399
2026		12,996
2027		24,437
Total	$	57,832