Stock-Based Compensation

6 Months Ended

Jun. 30, 2019

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Stock-Based Compensation

10. Stock-Based Compensation

Stock-based compensation expense has been reported in the Company’s condensed statements of operations for the three and six months ended June 30, 2019 and 2018 as follows (in thousands):

	Three Months Ended June 30,				Six Months Ended June 30,
	2019		2018		2019		2018
General and administrative	$	205	$	26	$	397	$	54
Research and development		65		36		111		112
Total stock-based compensation	$	270	$	62	$	508	$	166

As of June 30, 2019, the total unrecognized compensation expense related to unvested employee and non-employee stock option awards was $3.1 million, which was expected to be recognized in expense over a weighted-average period of approximately 3.0 years.