13. Convertible Notes Payable

On March 11, 2021, the Company issued Auctus Fund, LLC, a Delaware limited liability company a one-year senior secured convertible promissory note in the principal amount of $1.68 million, which included $180 thousand of interest which was deemed fully earned as of the issuance date (the “Auctus Note”). The Auctus Note was fully repaid (including all principal and interest) on March 15, 2022 with a one-time cash payment of $1.68 million.

On September 2, 2021, the Company issued to certain holders one-year subordinated secured convertible promissory notes in the aggregate principal amount of $1,814 thousand, which included $194 thousand of interest which was deemed fully earned as of the issuance date (the “September 2 Notes”). On January 25, 2022, the Company repaid one of the September 2 Notes in full with a one-time cash payment of $300 thousand of outstanding principal and accrued but unpaid interest. The Company incurred pre-payment penalty of $17 thousand with respect to the repayment of the note and the remaining unamortized debt discount in the amount of $133 thousand was written off and both amounts were recorded as a loss on extinguishment of debt of $150 thousand in the accompanying condensed consolidated statement of operations during 2022. The repayment extinguished the note in its entirety. On September 6, 2022, the outstanding balance on the remaining September 2 Notes was repaid in full which consisted of principal of $1,478 thousand.