Consolidated Statements of Cash Flows (Unaudited) - USD ($)	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (26,261,549)	$ (47,666,208)
Adjustments to reconcile net loss to net cash used in operating activities:
Acquired in-process research and development		6,500,602
Deferred taxes		(1,309,973)
Stock-based compensation	5,453,520	6,133,990
Non-cash interest expense	424,516	59,766
Accretion on debt securities available for sale, net	(91,231)	(474,771)
Depreciation and amortization expense	217,806	72,284
Change in assets and liabilities:
Prepaid expenses and other current assets	(212,823)	404,264
Accounts payable	(684,402)	(3,082,081)
Accrued expenses	(8,022,095)	5,604,224
Net cash used in operating activities	(29,176,258)	(33,757,903)
CASH FLOWS FROM INVESTING ACTIVITIES:
Acquisitions of fixed assets		(9,529)
Purchases of marketable securities	(5,776,090)	(36,860,554)
Sales and maturities of marketable securities	34,800,000	59,000,000
Net cash provided by investing activities	29,023,910	22,762,007
CASH FLOWS FROM FINANCING ACTIVITIES:
Proceeds from issuance of common stock, net of issuance costs	40,716,543	720,964
Proceeds from exercise of stock options	1,058,516
Proceeds from employee stock purchase plan	126,966	194,849
Proceeds from long-term debt		14,450,000
Debt issuance costs paid in cash		(123,186)
Net cash provided by financing activities	41,902,025	15,242,627
NET INCREASE IN CASH AND CASH EQUIVALENTS	41,749,677	4,246,731
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	44,425,830	47,357,472
CASH AND CASH EQUIVALENTS, END OF PERIOD	86,175,507	51,604,203
Helio Vision Inc
Adjustments to reconcile net loss to net cash used in operating activities:
Acquired in-process research and development	6,500,000
CASH FLOWS FROM INVESTING ACTIVITIES:
Cash acquired in Helio asset acquisition		632,090
SUPPLEMENTAL INFORMATION AND DISCLOSURES OF NONCASH ACTIVITIES:
Assets acquired		75,632
Liabilities acquired		637,994
Fair value of securities issued		4,862,731
Right-of-use assets acquired through operating leases		$ 386,060
Cash paid during the period for interest	$ 1,042,708

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