On June 15, 2018, the Company entered into subscription agreements with certain investors for the sale of 1,970,000 shares of common stock at a purchase price of $0.50 per shares in a registered direct offering (the “June 2018 Offering”), pursuant to a registration statement on Form  The investors in the June 2018 Offering also received warrants to purchase 1,970,000 shares of common stock with an exercise price of $0.75 per share and a -year term. The Company received net proceeds from the June 2018 Offering of approximately $0.9 million. In addition, the placement agent received warrants covering 133,600 shares of common stock (or 8% of total shares sold to investors) with a per share exercise price of $0.55, a -year term and include a cashless exercise provision.

Between January 31, 2019 and February 13, 2019 the Company entered into subscription agreements with certain investors for the sale of 10,728,480 shares of common stock at a purchase price of $0.50 per share in a registered direct offering, pursuant to a registration statement on Form  The investors in this offering also received warrants to purchase 5,364,240 shares of common stock with an exercise price of $0.50 per share and a -year term. The Company received net proceeds from the offering of approximately $4.8 million. In addition, the placement agent received warrants covering 965,563 shares of common stock (or 9% of total shares sold to investors) with a per share exercise price of $0.50 and a -year term and included a cashless exercise provision.

On April 5, 2019 and April 15, 2019, the Company entered into subscription agreements with certain investors for the sale of 10,931,000 shares of common stock at a purchase price of $0.50 per share in a registered direct offering, pursuant to a registration statement on Form  The investors in this offering also received warrants to purchase 5,465,500 shares of common stock with an exercise price of $0.50 per share and a -year term. The Company received net proceeds from the offering of approximately $5.0 million. In addition, the placement agent received warrants covering 938,790 shares of common stock (or 9% of the total shares sold to investors) with a per share exercise price of $0.50 and a -year term and included a cashless exercise provision.