(7) Equity Financings and Warrants

2015 Equity Financing

Private Investment in Public Entity (PIPE) Transaction

On June 16, 2015, the Company sold an aggregate of 6,003,082 security units, made up of an aggregate 6,003,082 shares of the Company’s common stock and warrants to purchase an aggregate of 2,401,233 shares of the Company’s common stock, at a purchase price of $6.1635 per unit, for aggregate net proceeds of approximately $34.2 million.

The warrants became exercisable on December 13, 2015, expire on June 16, 2022, and have an exercise price of $6.1012 per share. The warrants provide for cashless exercise and settlement in unregistered shares if there is no effective registration statement registering, or the prospectus contained therein is not available for the issuance of the shares of common stock underlying the warrants at the time of exercise. The Company’s Registration Statement on Form S-3 registering the shares of common stock, including the shares of common stock underlying the warrants, issued in the transaction for public resale was declared effective on July 20, 2015.

Warrants

Warrants to purchase shares of common stock were granted as part of various financing and business agreements. All outstanding warrants were recorded in additional paid-in capital at their estimated fair market value at the date of grant using a Black-Scholes option-pricing model.

As of June 30, 2016, these warrants, by year of expiration, are summarized below:

Year of Expiration	Number of Warrants		Weighted Average Exercise Price
2016		60,890	$	87.39
2017		24,124		17.89
2018		963,153		11.77
2019		224,323		15.73
2020		44,299		15.96
2022		2,401,233		6.10
		3,718,022	$	9.67