On August 14, 2019, we entered into the SPA with the Preferred Purchasers, pursuant to which we agreed to issue and sell to the Preferred Purchasers up to an aggregate of 6,000 shares of Series A Preferred Stock (which, at the initial conversion price, are convertible into an aggregate of up to approximately 3.87 million shares of Common Stock) and the August Warrants to purchase up to an equivalent number of shares of Common Stock. We closed the offering on August 14, 2019, and issued 5,030 shares of Series A Preferred Stock and granted the August Warrants to purchase up to 3,245,162 shares of Common Stock in connection therewith. We received proceeds of $4,688,000, net of direct costs of $342,000.

The SPA grants the Preferred Purchasers a right to participate, up to a certain amount, in subsequent financings for a period of 24 months. The SPA also prohibits us from entering into any agreement to issue, or announcing the issuance or proposed issuance, of any shares of Common Stock or Common Stock equivalents for a period of 90 days after the date that the registration statement, registering the shares issuable upon conversion of the Series A Preferred Stock and exercise of the August Warrants, is declared effective. We are also prohibited, until the date that the Preferred Purchasers no longer collectively hold at least 20% of the then-outstanding shares of Series A Preferred Stock issued pursuant to the SPA, from entering into an agreement to effect any issuance by us of Common Stock or Common Stock equivalents involving certain variable rate transactions. We also cannot enter into agreements related to “at-the-market” transactions for a period of 12 months. At the later of (i) the date that the August Warrants are fully exercised, and (ii) 12 months from the date of the SPA, we cannot draw down on any existing or future agreement with respect to “at-the-market” transactions if the sale of the shares in such transactions has a per share purchase price that is less than $3.76 (two times the exercise price of the Warrants).

Each share of Series A Preferred Stock is convertible, at any time and from time to time from and after the issuance date, at the holder’s option in to that number of shares of Common Stock equal to the stated value per share (or $1,000) divided by the conversion price (initially, $1.55); thus, initially, each share of Series A Preferred Stock is convertible into approximately 645 shares of Common Stock. In certain circumstances, the Series A Preferred Stock is mandatorily convertible into shares of Common Stock after the Company obtains stockholder approval to issue a number of shares of Common Stock in excess of 19.99% and the closing price of the Common Stock is 100% greater than the then-base conversion price on each trading day for any 20 trading days during a consecutive 30-trading-day period.

During the period ended June 30, 2020, 1,150 shares of Preferred Stock were converted into 741,933 shares of Common Stock. As of June 30, 2020, 3,246 shares Series A Preferred stock are outstanding and convertible to approximately 1.8 million shares of common stock.