Quarterly report pursuant to Section 13 or 15(d)


3 Months Ended
Mar. 31, 2021
Debt Disclosure [Abstract]  
Debt Debt
The following table sets forth our various debt obligations:

March 31, 2021 December 31, 2020
Series A Note (principal amount) $ —  $ 2,481 
Series B Note (principal amount) 11,071  3,585 
Paycheck Protection Program Loan 2,850  2,850 
Convertible notes 250  250 
Promissory notes 905  905 
Total debt $ 15,076  $ 10,071 
Debt discount - warrants (2020 Convertible Notes) —  (1,029)
Debt discount - issuance costs (2020 Convertible Notes) (1,128) (650)
Less: current maturities of long-term debt (10,012) (4,435)
Less: related-party debt (195) (195)
Long-term debt $ 3,741  $ 3,762 

2020 Convertible Notes
On July 15, 2020, we issued a Series A Senior Convertible Note (a “Series A Note”) to an institutional investor with an initial principal amount of $4,320 (reflecting an original issue discount of $320) in a private placement. We repaid in full the outstanding principal balance, accrued and unpaid interest and make-whole amount on a separate senior convertible note issued on March 20, 2020 to the same investor. After the payoff of the senior convertible note and deducting transaction costs, net cash proceeds to the Company was $1,751.
On the same date, we issued a Series B Senior Secured Convertible Note (a “Series B Note,” and together with the Series A Note, the “2020 Convertible Notes”) to the same investor with an initial principal amount of $17,280 (reflecting an original issue discount of $1,280). The investor paid for the Series B Note by delivering a secured promissory note (the “Investor Note”) with an initial principal amount of $16,000.

    We received cash under the Series B Note only upon cash repayment of the corresponding Investor Note. The investor, at its option and at any time, had the right to voluntarily prepay the Investor Note, in whole or in part. Until the Investor Note was repaid, the principal (and related original issue discount) of the Series B Note was considered to be "restricted." The Series B Note and the Investor Note were subject to the terms of a Master Netting Agreement between us and the investor. Upon
repayment of the Investor Note, an equal amount of the Series B Note became "unrestricted" and recorded as debt in our condensed consolidated balance sheets.
As a result of multiple offerings of sales of shares of our common stock as more fully described Note 9 below, the investor elected to require us to use forty percent (40%) of the net proceeds from those offerings to satisfy obligations under the 2020 Convertible Notes. During January and February 2021, we paid approximately $11,507, of which $5,717 was recorded as a loss on extinguishment of debt.
In March 2021, the investor voluntarily prepaid an aggregate of $10,250 pursuant to the terms of the Investor Note. As a result, we received cash proceeds of $10,250 and this amount of principal of the Series B Note, along with $820 of original issue discount became "unrestricted" and outstanding. After the aggregate payments pursuant to the Investor Note by the investor to us, there was no balance outstanding under the Investor Note and no restricted balance under the Series B Note.
On March 25, 2021, we delivered a Company Optional Redemption Notice (as defined in the Series B Note) to the holder of our Series B Note exercising our right to redeem and fully satisfy all obligations under the Series B Note on April 5, 2021. See Note 13 below.
We recorded a loss on extinguishment of debt of $51 for the three months ended March 31, 2021 related to monthly installment payments made to the investor.

In addition to the 2020 Convertible Notes, we issued a warrant exercisable for 3 years for the purchase of an aggregate of up to 2,160,000 shares of the Company's common stock, with a current exercise price of $2.25 per share, which decreased from $4.00 in February 2021 as a result of our underwritten public offering. The number of shares and exercise price are each subject to adjustment provided under the warrant. If, at the time of exercise of the warrant, there is no effective registration statement registering, or no current prospectus available for, the issuance of the shares, then the warrant may also be exercised, in whole or in part, by means of a “cashless exercise.” The warrant may not be exercised if, after giving effect to the exercise, the investor would beneficially own amounts in excess of those permissible under the terms of the warrant.

Upon issuance of the warrant, we recorded a warrant liability as a discount to the 2020 Convertible Notes. We revalued the warrant as of March 31, 2021, and accordingly recorded a loss of $885 as a result of the change in the fair value of the warrant liability for the three months ended March 31, 2021. The following table sets forth the assumptions used to calculate the fair value of our warrant liability at the respective dates:

March 31, 2021 December 31, 2020
Strike price per share $ 2.25  $ 4.00 
Closing price per share $ 1.65  $ 1.26 
Term (years) 2.28 2.53
Volatility 150  % 146  %
Risk-free rate 0.17  % 0.17  %
Dividend Yield

Participation Rights

In addition, the Company granted the investor participation rights in future equity and equity-linked offerings of securities, subject to certain limited exceptions, during the two years after the later of (a) the closing or (b) the date the Investor Note no longer remains outstanding, in an amount of up to 30% of the securities being sold in such offerings.

Paycheck Protection Program ("PPP") Loan

On April 10, 2020, we received loan proceeds in the amount of $2,850 from JPMorgan Chase, N.A. pursuant to the PPP under the Coronavirus Aid, Relief and Economic Security Act (the "CARES Act"), which was enacted on March 27, 2020. The loan, which was in the form of a note dated April 9, 2020, matures on April 9, 2022 and bears interest at a rate of 0.98% per annum. The Paycheck Protection Flexibility Act of 2020, extended the deferral period for loan payments to either (i) the date that SBA remits the borrower’s loan forgiveness amount to the lender or (ii) if the borrower does not apply for loan
forgiveness, ten months after the end of the borrower’s loan forgiveness covered period. The note may be prepaid by us at any time prior to the maturity with no prepayment penalties.

The principal amount of our PPP loan is subject to forgiveness under the PPP upon our request and to the extent that PPP loan proceeds were used to pay expenses permitted by the PPP. Although we currently anticipate a portion of the loan to be forgiven, there can be no assurance that any part of the PPP loan will be forgiven.
Convertible Notes
During April 2019, our board of directors authorized the issuance of $20,000 of convertible promissory notes (the “Convertible Notes”). The Convertible Notes bear ordinary interest at a rate of 7% per annum. Interest under the Convertible Notes is payable quarterly beginning on September 30, 2019, and interest and principal under the Convertible Notes is payable monthly beginning on June 30, 2021. The Convertible Notes are convertible into shares of the Company’s common stock at a price of $11.50 per share and mature on June 3, 2024. Additional information about our Convertible Notes is included in Note 8, "Debt" of the notes to the consolidated financial statements included in our Annual Report on Form 10-K.
Promissory Notes
In October 2019, our board of directors authorized the issuance of $20,000 of promissory notes (the “Notes”). The Notes bear ordinary interest at a rate of 10% per annum. Interest under the Notes is payable monthly beginning on November 30, 2019. During the term of the Notes, we are required to maintain a restricted bank account with a minimum balance of one year of interest payments on the aggregate principal balance of all Notes, which will be available for use exclusively to satisfy any payments owed by the Company under the Notes. The principal and unpaid accrued interest on the Notes will be due and payable on demand by the majority Note holders on or after the date that is 60 months following November 15, 2019. Additional information about our Notes is included in Note 8, "Debt" of the notes to the consolidated financial statements included in our Annual Report on Form 10-K.
During 2019, we issued a Note in the principal amount of $195, in exchange for cash consideration, to Cane Capital, LLC, an entity owned in part by Alan S. Knitowski, our Chief Executive Officer and a member of our board of directors.
Interest Expense
The following table sets forth interest expense for our various debt obligations included on the condensed consolidated statements of operations:
Three Months Ended March 31,
2021 2020
2020 Convertible Notes $ 452  $ — 
Accretion of debt discount - issuance costs 620 13
Accretion of debt discount - warrants 1,029
All other debt and financing obligations 118 88
Total $ 2,219  $ 101