Effective April 8, 2020, the Company exchanged an aggregate of approximately $6.95 million of all its outstanding October 2018 Notes, April/May 2019 Notes, July 2019 Notes and September 2019 Notes (collectively the "Notes"), representing principal and accrued interest through April 7, 2020, for 1,391 shares Series A Convertible Preferred Stock ("Preferred Stock"). The Company no longer has any outstanding notes payable. At the closing, in accordance with the Amendment and the Security Purchase Agreements pursuant to which the Notes were issued, the Company also issued 1,000,000 warrants to the holders reflecting 4,000 warrants for each $1,000 of unpaid interest accrued on the Notes.

Each share of Preferred Stock has a $5,000 issue price. Dividends accrue on the issue price at a rate of 10.0% per annum and are payable to holders of Preferred Stock as, when and if declared by the Company's Board of Directors. Each share of Preferred Stock, is convertible into the number of shares of common stock equal to the issue price divided by the conversion price of $0.15. Upon conversion of the Preferred Stock, all accrued and unpaid dividends will be converted to common stock utilizing the same conversion formula. The conversion price is subject to proportional adjustment for certain transactions relating to the Company's common stock, including stock splits, stock dividends and similar transactions. Holders of Preferred Stock are entitled to a liquidation preference in the event of any liquidation, dissolution or winding up of the Corporation based on their shares' aggregate issue price and accrued and unpaid dividends. Holders may convert their shares of Preferred Stock into common stock at any time and the Company has the right to cause each holder to convert their shares of Preferred Stock at any time after the eighteen (18) month anniversary of the original issue date if the common stock has traded for more than twenty (20) consecutive trading days above $0.50 (as adjusted for stock splits, stock dividends and similar transactions). Holders of shares of Preferred Stock are not entitled to vote with the holders of common stock, however, for so long as there are 423 shares of Preferred Stock outstanding, the Company is required to obtain the consent of the holders of the Preferred Stock to take certain corporate actions, including to incur indebtedness in excess of $250,000 in the aggregate. In addition, the Company agreed to use its reasonable best efforts to register the shares of common stock issuable upon conversion of the Preferred Stock in due course following the exchange.

During March 2020, the Company raised approximately $3.2 million through early warrant exercises, where 19,979,107 warrants were exercised for 19,979,107 shares of common stock. The warrant exercise price was reduced from $0.25 to $0.16 per warrant to induce warrant holders to exercise.