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Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2019


				Weighted
		Weighted		average	Aggregate
	Number	average		contractual	intrinsic
	of shares	exercise price		term	value
Outstanding at December 31, 2018	2,283,036	$	5.06
Granted	890,866		12.79
Exercised	(52,819)		7.77
Forfeited	(17,744)		3.96
Expired	(3,130)		4.59
Outstanding at March 31, 2019	3,100,209	$	7.24	8.2	$	21,659,618
Vested and expected to vest at March 31, 2019	3,075,040	$	7.29	8.2	$	21,350,901
Exercisable at March 31, 2019	1,434,087	$	5.78	6.8	$	12,112,953

Schedule of stock-based compensation expense


	Three months ended March 31,
	2019		2018

Research and development	$	101,701	$	90,797
General and administrative		1,154,609		443,773
Total	$	1,256,310	$	534,570

Schedule of warrant activity


		Weighted
		average
	Warrants	exercise price
Outstanding at December 31, 2018	123,037	$	6.35
Issued	58,332		8.10
Exercised	—		—
Outstanding at March 31, 2019	181,369	$	6.91

- Definition

Tabular disclosure of warrants or rights issued. Warrants and rights outstanding are derivative securities that give the holder the right to purchase securities (usually equity) from the issuer at a specific price within a certain time frame. Warrants are often included in a new debt issue to entice investors by a higher return potential. The main difference between warrants and call options is that warrants are issued and guaranteed by the company, whereas options are exchange instruments and are not issued by the company. Also, the lifetime of a warrant is often measured in years, while the lifetime of a typical option is measured in months. Disclose the title of issue of securities called for by warrants and rights outstanding, the aggregate amount of securities called for by warrants and rights outstanding, the date from which the warrants or rights are exercisable, and the price at which the warrant or right is exercisable.

+ References + Details