CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 64,931	$ 50,422
Prepaid expenses and other current assets	2,598	1,334
Total current assets	67,529	51,756
Property and equipment, net	376	321
Restricted cash	20	20
Intangible assets	46,400	46,400
Goodwill	13,064	13,064
Other assets	223	0
Total assets	127,612	111,561
Current liabilities:
Accounts payable	2,176	1,367
Accrued expenses	5,630	4,746
Other current liabilities	142	0
Total current liabilities	7,948	6,113
Other liabilities	367	313
Deferred tax liability	12,528	12,528
Contingent consideration	91,400	48,400
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value per share; 5,000,000 shares authorized at June 30, 2019 and December 31, 2018 and no shares issued and outstanding at June 30, 2019 and December 31, 2018	0	0
Common stock, $0.001 par value per share; 200,000,000 shares authorized at June 30, 2019 and December 31, 2018 and 101,265,896 and 77,456,180 shares issued and outstanding at June 30, 2019 and December 31, 2018, respectively	101	77
Additional paid-in capital	262,107	230,154
Accumulated deficit	(246,839)	(186,024)
Total stockholders’ equity	15,369	44,207
Total liabilities and stockholders’ equity	$ 127,612	$ 111,561