Note 10 – Amendments to Notes and Warrants

During the nine months ended September 30, 2020, the Company entered into amendments (the "Amendments") with certain holders of the Company's 8% Unsecured Promissory Notes (the "2018 Notes") and Nontransferable Common Stock Purchase Warrants (the "2018 Warrants"). Pursuant to the Amendments, the maturity date of the applicable 2018 Notes was extended from March 29, 2021 to June 30, 2021 and the expiration date of the applicable 2018 Warrants was extended from March 29, 2021 to March 29, 2022. The terms of the applicable 2018 Notes were also amended to grant the holders of such 2018 Notes a right to participate in a future private offering of the Company's securities upon terms substantially similar to those offered to investors in a future primary offering of the Company's securities and to grant resale registration rights in connection therewith. The Company recognized $209,810 of non-cash costs in Other Expenses in the accompanying condensed statements of operations relating to the 2018 Warrants extension.

The Company subsequently entered into a second amendment to the 2018 Notes with certain holders of its Unsecured Promissory Notes whereby the maturity date of the applicable 2018 Notes was extended from June 30, 2021 to June 30, 2022 and the expiration date of the applicable 2018 Warrants was extended from March 29, 2022 to March 29, 2026. The exercise price of the 2018 Warrants was adjusted from $5.30 per share to $2.00 per share. The terms of the applicable 2018 Notes were also amended to require that the holders of such 2018 Notes participate in a future private offering of the Company's securities (the "Private Offering") upon terms substantially similar to those offered to investors in a future primary offering of the Company's securities. All principal and interest outstanding under the applicable 2018 Notes will convert into the Company's securities in the Private Offering, subject to legal and regulatory limitations. The Company also granted an additional warrant to purchase a half share of its common stock, or 1,511,250 shares of common stock in total, per dollar of each participating 2018 Note holder's principal amount of the 2018 Notes with an exercise price of $2.00 per share and an expiration date of March 29, 2026 (the "New Warrants"). The New Warrants will be exercisable beginning on the six-month anniversary of the date of issuance, and the Company granted to the participating 2018 Note holders certain registration rights with respect to its securities issued in the Private Offering and the shares of common stock underlying the New Warrants. The Company recognized $489,645 of non-cash costs in Other Expenses in the accompanying condensed statements of operations related to this second amendment.

Also, during the nine months ended September 30, 2020, the Company entered into amendments with certain holders of the Company's Common Stock Purchase Warrants (the "2017 Warrants") pursuant to which the expiration date of the applicable 2017 Warrants was extended from June 30, 2020 to September 30, 2021. The Company recognized $1,591,233 of non-cash costs in Other Expenses in the accompanying condensed statements of operations relating to the 2017 Warrants extension.

The Company determined the proper classification of the loan modification based on ASC 470-50, Debt Modifications and Extinguishments. Because the change in present value of cash flows of the modified debt is less than 10% when compared to the present value of the cash flows of the original debt, no change is required to be made to the debt in the accompanying condensed financial statements.