|6 Months Ended|
Jun. 30, 2018
The Company had 54,008,056 shares of common stock and 2,907 shares of preferred stock outstanding as of June 30, 2018, both with a par value of $0.001 per share. During the first quarter of 2018, 2,056 shares of preferred stock were converted into 2,056,000 shares of common stock. During the three and six months ended June 30, 2018, respectively, the Company issued 6,175 and 519,135 shares of common stock upon option exercises, resulting in cash proceeds of $0.0 million and $0.8 million, respectively. For the both the three and six months ended June 30, 2017, 89,462 options were exercised, resulting in cash proceeds of $0.2 million. During the three and six months ended June 30, 2018, respectively, the Company issued 27,697 and 90,859 shares of common stock upon exercise of warrants, resulting in cash proceeds of $0.1 million and $0.2 million, respectively. There were 692,620 warrants exercised during the corresponding 2017 periods, resulting in cash proceeds of $1.3 million.
At our Annual Shareholder Meeting, held on July 24, 2018, the shareholders approved both the 2018 Employee, Director and Consultant Equity Incentive Plan, or the 2018 Plan, and the 2018 Employee Stock Purchase Plan, or the 2018 ESPP. The 2018 Plan permits the Company to issue up to 3,000,000 shares of common stock pursuant to awards granted under the 2018 Plan. Upon approval of the 2018 Plan, the 2016 Employee, Director and Consultant Equity Incentive Plan, or the 2016 Plan, was terminated and no additional awards will be made thereunder, however, all outstanding awards under the 2016 Plan will remain in effect. There were approximately 74,000 shares remaining and available for grant under the 2016 Plan that terminated with the 2016 Plan. The 2018 ESPP provides eligible employees with the opportunity to purchase shares of our common stock at a discount, on a tax-favored basis, through regular payroll deductions in compliance with federal tax regulations. The Company has reserved 500,000 shares of common stock for the administration of the 2018 ESPP.
Underwritten Public Offering
In February 2018, the Company completed an underwritten public offering of its common stock in which it sold 6,325,000 shares of common stock, including the exercise in full by the underwriters of their option to purchase an additional 825,000 shares of common stock, to the public at a price of $8.00 per share (the "2018 Offering"). The 2018 Offering was completed under the Company's shelf registration statement that was filed on Form S-3 and declared effective by the SEC on August 3, 2016. Net proceeds of the 2018 Offering, after deducting the underwriting discounts and commissions, were $47.6 million, excluding offering expenses of approximately $0.4 million incurred by the Company.
The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income.
Reference 1: http://www.xbrl.org/2003/role/presentationRef