Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities
Net loss	$ (12,663)	$ (5,156)
Adjustments to reconcile net loss to net cash used in operating activities:
Change in fair value of investment	7,352	2,765
Change in fair value of warrant liabilities		(81)
Research and development-acquired license, expensed	1,154
Stock-based compensation		329
Realized (gain) loss on marketable securities	(97)	130
Unrealized loss (gain) on marketable securities	781	(132)
Changes in assets and liabilities:
Prepaid expenses and other assets	135	136
Accounts payable and accrued expenses	30	125
Accrued salaries and benefits	(321)	(138)
Payable to DatChat	50	(207)
Net cash used in operating activities	(3,579)	(2,229)
Cash flows from investing activities
Purchase of marketable securities	(98,524)	(6,651)
Sale of marketable securities	72,008	8,416
Sale of Hoth common shares	460
Purchase of investments at fair value		(550)
Purchase of research and development licenses	(1,154)
Net cash (used in) provided by investing activities	(27,210)	1,215
Cash flows from financing activities
Proceeds from issuance common stock, common warrants and prefunded warrants, net of offering cost	6,559
Proceeds from issuance common stock, net of offering cost	17,845	787
Proceeds from issuance common stock/ At-the-market offering		602
Offering costs from the issuance of common stock / At-the-market offering		(79)
Proceeds from exercise of warrants	7,204
Net cash provided by financing activities	31,608	1,310
Net increase in cash and cash equivalents	819	296
Cash and cash equivalents, beginning of period	91	17
Cash and cash equivalents, end of period	910	313
Non-cash investing and financing activities
Distribution of Hoth common stock	$ 269