Stockholders' Equity

12 Months Ended

Dec. 31, 2014

Consolidated Statements of Stockholders' Equity (Deficit)

Stockholders' Equity

5. Stockholders' Equity

Common Stock

        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. There were 173,266,416 and 106,190,652 shares of common stock outstanding as of December 31, 2014 and 2013, respectively.

Preferred Stock

        The Company has authorized 5.0 million shares of preferred stock, par value $.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, 2013 and 2012, there were no shares of Series A Junior Participating Cumulative Preferred Stock issued and outstanding.

2014 Public Offerings

        On April 30, 2014, we completed an underwritten public offering of 22,600,000 shares of common stock. The shares were sold at $5.50 per share for gross proceeds of $124,300,000. The total net proceeds to Plug Power from the April 2014 public offering were $116,443,375.

        On March 11, 2014, we completed an underwritten public offering of 3,902,440 shares of common stock. The shares were sold at $5.74 per share for gross proceeds of $22,400,006. The shares were placed with a single institutional investor. The total net proceeds to Plug Power from the March 2014 public offering were approximately $21,308,987.

        On January 15, 2014 we completed an underwritten public offering of 10,000,000 shares of common stock and accompanying warrants to purchase 4,000,000 shares of common stock. The shares and the warrants were sold together in a fixed combination, with each combination consisting of one share of common stock and 0.40 of a warrant to purchase one share of common stock, at a price of $3.00 per fixed combination for gross proceeds of $30,000,000. The securities were placed with a single institutional investor, and are subject to weighted average anti-dilution provisions in the event of issuance of additional shares of common stock and certain other conditions, as further described in the warrant agreement. Additionally, in the event of a sale of the Company, and under certain conditions, each warrant holder has the right to require the Company to purchase such holder's warrants at a price determined using a Black-Scholes option pricing model. The warrants have an exercise price of $4.00 per share, are immediately exercisable and will expire on January 15, 2019. The total net proceeds to Plug Power from the January 2014 public offering was approximately $27,970,256.

2013 Public Offerings

        On September 16, 2013, the Company completed an underwritten public offering of 18,600,000 shares of common stock. The shares were sold at $0.54 per share. Net proceeds, after underwriting discounts and commissions and other fees and expenses payable by Plug Power were $9,151,221. The Company also sold an additional 2,790,000 shares of common stock at $0.54 per share, pursuant to the underwriter's exercise of its over-allotment option in connection with the September 16, 2013 underwritten public offering, resulting in additional net proceeds to Plug Power of $1,408,671. The total net proceeds from the September 2013 public offering to Plug Power were approximately $10.6 million.

        On February 20, 2013, the Company completed an underwritten public offering of 18,910,000 shares of common stock and warrants to purchase an aggregate of 18,910,000 shares of common stock. The shares and warrants in the underwritten public offering were sold as a fixed combination, with each combination consisting of one share of common stock and one warrant to purchase one share of common stock at a price to the public of $0.15 per fixed combination. The underwriter also purchased 2,836,500 warrants pursuant to the exercise of its over-allotment option. These warrants have an exercise price of $0.15 per share, are immediately exercisable and will expire on February 20, 2018. The warrants are subject to weighted average anti-dilution provisions in the event of issuance of additional shares of common stock and certain other conditions, as further described in the warrant agreement. Additionally, in the event of a sale of the Company, and under certain conditions, each warrant holder has the right to require the Company to purchase such holder's warrants at a price determined using a Black-Scholes option pricing model. The underwriter was also granted an additional 1,891,000 warrants at $0.18 per share. These warrants are exercisable on February 13, 2014 and will expire on February 13, 2018. Net proceeds, after underwriting discounts and commissions and other fees and expenses payable by Plug Power, were approximately $1.9 million. On February 21, 2013, the Company sold 2,801,800 additional shares of common stock, pursuant to the underwriter's exercise of its overallotment option in connection with the public offering, resulting in additional net proceeds to the Company of approximately $0.4 million. The total net proceeds from the February 2013 public offerings to Plug Power were approximately $2.3 million.

2012 Public Offerings

        On March 28, 2012, the Company completed an underwritten public offering of 13,000,000 shares of its common stock. The shares were sold at $1.15 per share. Net proceeds, after underwriting discounts and commissions and other fees and expenses payable by Plug Power were $13,704,745.

        On March 29, 2012, the Company sold 1,950,000 additional shares of common stock at $1.15 per share, pursuant to the underwriter's exercise of its over-allotment option in connection with the March 28, 2012 underwritten public offering, resulting in additional net proceeds to Plug Power of $2,085,525.