Convertible Notes | Note 5 - Convertible Notes The table below summarizes outstanding convertible notes as of February 28, 2021 and November 30, 2020 (amounts are rounded to nearest thousand): February 28, 2021 November 30, 2020 Convertible Notes Payable: Principal value of 2020 Debenture $ 500,000 $ — Fair value of bifurcated contingent put option 34,000 — Debt discount (50,000) — Carrying value of 2020 Debenture 484,000 — Principal value of 2021 Debenture 500,000 — Fair value of bifurcated contingent put option 39,000 — Debt discount (133,000) — Carrying value of 2021 Debenture 406,000 — Principal value of 2019 August Debenture — 100,000 Debt discount — (8,000) Carrying value of 2019 August Debenture — 92,000 Total carrying value of convertible notes payable $ 890,000 $ 92,000 On December 23, 2020, the Company issued a debenture for $0.5 million (the “2020 Debenture”) pursuant to a securities purchase agreement with an accredited investor. The debenture has a maturity date of the earlier of (a) June 23, 2021, or (b) the closing of the next financing transaction, or series or transactions, pursuant to which the Company raises net proceeds of at least $1.0 million, or as may be extended at the option of the Holder. The 2020 Debenture may be converted at any time on or prior to maturity at the lower of $2.70 or 93% of the average of the four lowest daily VWAPs during the 10 consecutive trading days immediately preceding the conversion date, provided that as long as we are not in default under the 2020 Debenture, the conversion price may never be less than $1.00. The debenture bears interest at the rate of 5.5% per annum, and on issuance, the Company paid to the holder a commitment fee equal to 2% of the amount of the debenture. On February 12, 2021, the Company issued a debenture for $0.5 million (the "2021 Debenture") pursuant to a securities purchase agreement with an accredited investor dated February 12, 2021. The 2021 Debenture may be converted at any time on or prior to maturity at the lower of $1.15 or 93% of the average of the four lowest daily VWAPs during the 10 consecutive trading days immediately preceding the conversion date, provided that as long as we are not in default under the 2020 Debenture, the conversion price may never be less than $1.00. The debenture has a maturity date of February 12, 2022, provided that in case of an event of default, the debenture may become at the holder's election immediately due and payable. The debenture bears interest at the rate of 5.5% per annum, and on issuance, the Company paid to the holder a commitment fee equal to 2% of the amount of the debenture. Upon issuance of the 2020 Debenture and 2021 Debenture, the Company recognized a debt discount of approximately $216,000, resulting from the recognition of issuance costs of $95,000, beneficial conversion feature of $65,000, and bifurcated embedded derivatives of $55,000. The contingent share-settled redemption feature and contingent prepayment provision within the 2020 Debenture and the 2021 Debenture are both contingent put option that are required to be separately measured at fair value, with subsequent changes in fair value recognized in the Condensed Consolidated Statement of Operations. The fair value estimate is a Level 3 measurement. The Company estimated the fair value of the prepayment provision by estimating the probability of the occurrence of a Triggering Date and applying the probability to the discounted maximum redemption premium for any given payment with the following key inputs: February 12, 2021 December 23, 2020 Strike price $ 1.15 $ 2.70 Terms (years) 1.0 0.5 Volatility 92 % 92 % Risk-free rate 0.1 % 0.1 % Dividend yield — % — % The fair value of the contingent put option in all outstanding debentures with the feature are revalued as of February 28, 2021 based on the following weighted average key inputs: February 28, 2021 Strike price $ 1.93 Terms (years) 0.6 Volatility 89 % Risk-free rate 0.1 % Dividend yield — % Interest expense Interest expense, included in the accompanying Condensed Consolidated Statements of Operations, is comprised of the following for each period presented (amounts are rounded to nearest thousand): For the three months ended February 28, 2021 February 29, 2020 Interest expense based on the coupon interest rate of the outstanding debt $ 10,000 $ 107,000 Accretion of debt discount 40,000 91,000 Total interest expense $ 50,000 $ 198,000 |