Stockholder's Equity (Tables)

6 Months Ended

Jun. 30, 2017

The following table summarizes common stock share activity for the six months ended June 30, 2017 (dollars in thousands):



	Shares of Common Stock	Common Stock		Additional Paid-in Capital		Accumulated Deficit			Total Stockholders' Equity
Balance, December 31, 2016	24,609,411	$	24	$	214,918	$	(180,123	)	$	34,819
Cumulative stock-based compensation forfeiture adjustment	—	—		67		(67		)	—
Net loss	—	—		—		(9,070		)	(9,070		)
Stock-based compensation expense	—	—		833		—			833
Common stock issued through employee stock purchase plan	7,667	—		18		—			18
Common stock issued under Shelf Registration, net of expenses	1,860,973	2		5,054		—			5,056
Balance, June 30, 2017	26,478,051	$	26	$	220,890	$	(189,260	)	$	31,656

The Company had reserved shares of common stock for future issuance as follows:



	June 30, 2017	December 31, 2016
Outstanding stock options	2,802,174	1,819,444
Outstanding Series C-1 Preferred warrants	14,033	14,033
Warrants to purchase common stock associated with June 2016 Public Offering	4,218,750	4,218,750
Warrants to purchase common stock associated with Loan Agreement	122,435	122,435
For possible future issuance under 2014 Equity Incentive Plan (Note 9)	622,535	668,921
For possible future issuance under Employee Stock Purchase Plan (Note 9)	94,082	72,338
For possible future issuance under 2015 Inducement Plan (Note 9)	165,000	165,000
Total common shares reserved for future issuance	8,039,009	7,080,921