Stockholders' Equity	12 Months Ended
Dec. 31, 2019
Stockholders' Equity
Stockholders' Equity	11. Stockholders’ Equity Preferred Stock The Company has authorized 5.0 million shares of preferred stock, par value $0.01 per share. The Company’s certificate of incorporation provides that shares of preferred stock may be issued from time to time in one or more series. The Company’s Board of Directors is authorized to fix the voting rights, if any, designations, powers, preferences, qualifications, limitations and restrictions thereof, applicable to the shares of each series. The Company has authorized Series A Junior Participating Cumulative Preferred Stock, par value $.01 per share. As of December 31, 2019 and 2018, there were no shares of Series A Junior Participating Cumulative Preferred Stock issued and outstanding. See Note 12, Redeemable Convertible Preferred Stock, for a description of the Company’s issued and outstanding Series C and E redeemable preferred stock. Common Stock and Warrants The Company has one class of common stock, par value $.01 per share. Each share of the Company’s common stock is entitled to one vote on all matters submitted to stockholders. In December 2019, the Company sold 46 million shares of common stock at a public price of $2.75 per share for net proceeds of approximately $120.4 million. In September 2019, the Company issued a $40.0 million in aggregate principal amount of 7.5% convertible senior note due in 2023 ($40 million Convertible Senior Note). The Company’s total obligation, net of interest accretion, due to the holder is $48.0 million. The total net proceeds from this offering, after deducting costs of the issuance were $39.1 million. As of December 31, 2019, the outstanding balance of the note, net of related discount and issuance costs was $39.6 million. See Note 10, Convertible Senior Notes, for more details. In March 2019, the Company issued and sold in a registered direct offering an aggregate of 10 million shares of the Company’s common stock at a purchase price of $2.35 per share. The net proceeds to the Company were approximately $23.5 million. There were 303,378,515 and 219,157,998 shares of common stock outstanding as of December 31, 2019 and 2018, respectively. On December 22, 2016, the Company issued warrants to purchase 10,501,500 shares of common stock in connection with offerings of common stock and Series D Redeemable Preferred Stock at an exercise price of $1.50 per share. On April 12, 2017, the Company and Tech Opportunities LLC (Tech Opps) entered into an agreement, pursuant to which Tech Opps exercised in full its warrants to purchase an aggregate of 10,501,500 shares of common stock. The net proceeds received by the Company pursuant to the exercise of the existing warrants was $15.1 million and the Company issued to Tech Opps warrants to acquire up to 5,250,750 shares of common stock at an exercise price of $2.69 per share. All of these warrants were exercised on October 15, 2019. During 2017, additional warrants to purchase up to 110,573,392 shares of common stock were issued in connection with transaction agreements with Amazon and Walmart, as discussed in Note 13, Warrant Transaction Agreements. At both December 31, 2019 and 2018, in connection with these agreements, warrants to acquire 26,188,434 shares of common stock, have vested and are therefore exercisable. These warrants are measured at fair value and are classified as equity instruments on the consolidated balance sheet. At Market Issuance Sales Agreement On April 3, 2017, the Company entered into an At Market Issuance Sales Agreement (the Sales Agreement) with FBR Capital Markets & Co. (now B. Riley FBR, Inc.), as sales agent (FBR), pursuant to which the Company may offer and sell, from time to time through FBR, shares of common stock par value $0.01 per share having an aggregate offering price of up to $75.0 million. Under the Sales Agreement, in no event shall the Company issue or sell through FBR such a number of shares that exceeds the number of shares or dollar amount of common stock registered. During the year ended December 31, 2019, the Company raised gross proceeds of $15.3 million. As of October 29, 2019, the Company had raised a total of $46.8 million during the term of the Sales Agreement. During the fourth quarter of 2019, the Sale Agreement expired.

11. Stockholders’ Equity

Preferred Stock

The Company has authorized 5.0 million shares of preferred stock, par value $0.01 per share. The Company’s certificate of incorporation provides that shares of preferred stock may be issued from time to time in one or more series. The Company’s Board of Directors is authorized to fix the voting rights, if any, designations, powers, preferences, qualifications, limitations and restrictions thereof, applicable to the shares of each series.

The Company has authorized Series A Junior Participating Cumulative Preferred Stock, par value $.01 per share. As of December 31, 2019 and 2018, there were no shares of Series A Junior Participating Cumulative Preferred Stock issued and outstanding. See Note 12, Redeemable Convertible Preferred Stock, for a description of the Company’s issued and outstanding Series C and E redeemable preferred stock.

Common Stock and Warrants

The Company has one class of common stock, par value $.01 per share. Each share of the Company’s common stock is entitled to one vote on all matters submitted to stockholders.

In December 2019, the Company sold 46 million shares of common stock at a public price of $2.75 per share for net proceeds of approximately $120.4 million.

In September 2019, the Company issued a $40.0 million in aggregate principal amount of 7.5% convertible senior note due in 2023 ($40 million Convertible Senior Note). The Company’s total obligation, net of interest accretion, due to the holder is $48.0 million. The total net proceeds from this offering, after deducting costs of the issuance were $39.1 million. As of December 31, 2019, the outstanding balance of the note, net of related discount and issuance costs was $39.6 million. See Note 10, Convertible Senior Notes, for more details.

In March 2019, the Company issued and sold in a registered direct offering an aggregate of 10 million shares of the Company’s common stock at a purchase price of $2.35 per share. The net proceeds to the Company were approximately $23.5 million. There were 303,378,515 and 219,157,998 shares of common stock outstanding as of December 31, 2019 and 2018, respectively.

On December 22, 2016, the Company issued warrants to purchase 10,501,500 shares of common stock in connection with offerings of common stock and Series D Redeemable Preferred Stock at an exercise price of $1.50 per share. On April 12, 2017, the Company and Tech Opportunities LLC (Tech Opps) entered into an agreement, pursuant to which Tech Opps exercised in full its warrants to purchase an aggregate of 10,501,500 shares of common stock. The net proceeds received by the Company pursuant to the exercise of the existing warrants was $15.1 million and the Company issued to Tech Opps warrants to acquire up to 5,250,750 shares of common stock at an exercise price of $2.69 per share. All of these warrants were exercised on October 15, 2019.

During 2017, additional warrants to purchase up to 110,573,392 shares of common stock were issued in connection with transaction agreements with Amazon and Walmart, as discussed in Note 13, Warrant Transaction Agreements. At both December 31, 2019 and 2018, in connection with these agreements, warrants to acquire 26,188,434 shares of common stock, have vested and are therefore exercisable. These warrants are measured at fair value and are classified as equity instruments on the consolidated balance sheet.

At Market Issuance Sales Agreement

On April 3, 2017, the Company entered into an At Market Issuance Sales Agreement (the Sales Agreement) with FBR Capital Markets & Co. (now B. Riley FBR, Inc.), as sales agent (FBR), pursuant to which the Company may offer and sell, from time to time through FBR, shares of common stock par value $0.01 per share having an aggregate offering price of up to $75.0 million. Under the Sales Agreement, in no event shall the Company issue or sell through FBR such a number of shares that exceeds the number of shares or dollar amount of common stock registered. During the year ended December 31, 2019, the Company raised gross proceeds of $15.3 million. As of October 29, 2019, the Company had raised a total of $46.8 million during the term of the Sales Agreement. During the fourth quarter of 2019, the Sale Agreement expired.