Note 10—Capital Stock

Authorized Preferred and Common Stock

As of December 31, 2015, the Company has 6,000,000 shares of preferred stock, par value $0.001 authorized and 450,000,000 shares of common stock, par value $0.001 authorized. As of December 31, 2015 the Company has 172,887,221 shares of common stock outstanding and the following shares of common stock are reserved for issuance:

	Reserved for issuance		Strike Price		Expiry

Shares reserved under outstanding stock options and options available for grant		52,307,279
Shares reserved for future issuance under the Employee Stock Purchase Plan		300,073
Warrants to purchase common stock associated with December 2014 private placement		50,189,431	$	0.1003	December 23, 2021
Warrants to purchase common stock associated with December 2014 venture loan and security agreement		2,492,523	$	0.1003	December 23, 2024
Warrants to purchase common stock associated with September 2014 consulting agreement with Danforth Advisors		100,000	$	0.2500	September 8, 2024
Outstanding warrants issued in June 2012		437,158	$	0.2745	June 29, 2017
Outstanding warrants issued in May 2013, vesting May 2013		20,655,737	$	0.2745	May 17, 2020
Outstanding warrants issued in May 2013, vesting August 2013		14,426,230	$	0.2745	August 9, 2020
Total common shares reserved for issuance at December 31, 2015		140,908,431
Total common shares issued and outstanding at December 31, 2015		172,887,221
Total common shares outstanding and reserved for issuance at December 31, 2015		313,795,652

On May 17, 2013, the Company entered into the 2013 Purchase Agreement with the 2013 Investors, pursuant to which the Company sold securities to the 2013 Investors in the May 2013 Private Placement. In the May 2013 Private Placement, the Company sold an aggregate of 43,715,847 shares of its common stock at a price of $0.2745 per share for gross proceeds of $12,000,000. The 2013 Investors also received the 2013 Warrants to purchase up to an aggregate of 32,786,885 shares of common stock an exercise price of $0.2745 per share. The 2013 Warrants were immediately exercisable as to 63% of the shares issuable thereunder. The remaining 37% of the shares issuable under the 2013 Warrants were to become exercisable upon an increase in the number of authorized shares of common stock. On August 9, 2013, the Company’s shareholders’ approved an amendment to the Company’s Certificate of Incorporation to increase the number of authorized shares of common stock from 150,000,000 to 300,000,000 shares, which provided for adequate authorized shares for all potential common stock equivalents issued pursuant to the May 2013 Private Placement. The 2013 Warrants are all currently exercisable and have a term of seven years from the date they became exercisable.

For its services in this transaction, the placement agent received cash compensation in the amount of approximately $780,000 and the placement agent and an affiliate received warrants to purchase an aggregate of 2,295,082 shares of common stock, at an exercise price of $0.2745 per share (the “2013 Placement Agent Warrants”). The 2013 Placement Agent Warrants became exercisable on August 9, 2013, following shareholder approval of an increase in the Company’s authorized shares of common stock and expire August 9, 2020. The cash compensation and the fair value of the warrants were recorded as issuance costs resulting in a reduction to shareholders’ equity.

In connection with this private placement, all preferred stockholders converted their shares of Preferred Stock to common stock resulting in the issuance of 39,089,161 shares of common stock.

In addition, pursuant to the 2013 Purchase Agreement, each Investor had the right, at any time on or before June 30, 2014 (the “Exercise Date”), to purchase at one or more subsequent closings its pro rata share of up to an aggregate of 18,214,936 additional shares of common stock at a purchase price of $0.2745 per share and 2013 Warrants to purchase up to an aggregate of 13,661,201 shares of common stock at an exercise price of $0.2745 per share. The Exercise Date was extended until December 31, 2014, and this right expired unexercised.

In September, 2014, the Company issued warrants to the Company’s financial consultant, Danforth Advisors, to purchase up to 100,000 shares of common stock at a price of $0.25 per share. The warrants have a ten year term and vest on a monthly basis over two years, provided that, if the Company terminates the agreement without cause before the one year anniversary, 50% of the warrants immediately vest, and the remaining 50% of the warrants immediately vest if the Company terminates the agreement without cause after the extension of the agreement after one year. The warrant will also become exercisable in full upon a change of control of the Company if the agreement is still in effect. The fair value of the warrants at issuance was recorded as equity totaling $24,000 and will be amortized to consulting fees over the remaining service requirement. The non-cash compensation expense for the years ended December 31, 2015 and 2014 was $12,000 and $3,000 respectively.

On December 23, 2014, the Company entered into the 2014 Purchase Agreement with the 2014 Investors, pursuant to which it sold to the 2014 Investors in the December 2014 Private Placement an aggregate of 50,099,700 shares of common stock at a price of $0.1003 per share for gross proceeds of approximately $5.025 million. The 2014 Investors also received 2014 Warrants to purchase up to an aggregate of 50,099,700 shares of common stock at an exercise price of $0.1003 per share. The 2014 Warrants are all currently exercisable and have a term of seven years.

For services related to this transaction, the placement agent and legal counsel received an aggregate of $218,000 in cash fees and the placement agent and an affiliate received warrants to purchase an aggregate of 89,731 shares of common stock (the “2014 Placement Agent Warrants”). The cash fees and the fair value of the 2014 Placement Agent Warrants were recorded as equity issuance costs resulting in a reduction to shareholders’ equity.

The 2014 Warrants were recorded as equity at fair value on the date of issuance. Fair value of the 2014 Warrants was calculated using the following inputs in a Black-Scholes model:

	December 23, 2014
Risk-free interest rate		1.98	%
Expected life		7 years
Expected volatility		138.4	%
Dividend yield		0	%

On the closing date of the December 2014 Private Placement, the fair value of the 2014 Warrants was $5.2 million, and the fair value of the 2014 Placement Agent Warrants was $9,000.

Registration Rights Agreements

In connection with the December 2014 Private Placement, on December 23, 2014, the Company also entered into a Registration Rights Agreement with the 2014 Investors and the placement agent, pursuant to which the Company was required to file a registration statement on Form S-1 within 45 days of December 23, 2014 to cover the resale of (i) the shares of common stock sold to the 2014 Investors and the shares of common stock underlying the 2014 Warrants and (ii) the shares of common stock underlying the 2014 Placement Agent Warrants. The Company filed the registration statement on February 6, 2015, and it was declared effective on March 31, 2015.

Venture Loan and Security Agreement

On December 23, 2014, the Company entered into the Loan Agreement with Horizon Technology Finance Corporation (the “Lender”) under which the Company has borrowed $5.0 million. In connection with the Loan Agreement, the Company issued to the Lender and its affiliates Lender Warrants to purchase a total of 2,492,523 shares of common stock at an exercise price of $0.1003 per share. The Lender Warrants have a term of ten (10) years.

The Lender Warrants were recorded as equity at fair value on the date of issuance. Fair value of the Lender Warrants was calculated using the following inputs in a Black-Scholes model:

	December 23, 2014
Risk-free interest rate		2.17	%
Expected life		10 years
Expected volatility		121.6	%
Dividend yield		0	%

The fair value of the Lender Warrants at issuance was $261,000. Cash interest paid during the years ended December 31, 2015 and 2014 totaled $467,500 and $0, respectively. Non-cash interest related to debt discounts recorded during the years ended December 31, 2015 and 2014 totaled was $153,000 and $0, respectively, with a remaining debt discount balance of $257,000 as of December 31, 2015.

Principal payments due under the terms of the Loan Agreement are as follows:

2016		1,333,333
2017		2,000,000
2018		1,666,667
	$	5,000,000