Preferred and Common Stock Warrants (Tables)

3 Months Ended

Mar. 31, 2020

Equity [Abstract]

Schedule of Warrants

The following table provides a roll forward of outstanding warrants for the three month period ended March 31, 2019:

	Number of warrants	Weighted Average Exercise Price		Weighted Average Contractual Term (Years)
Outstanding and exercisable warrants to purchase preferred shares as of December 31, 2018	5,146,400	$	1.94	4.23
Conversion of warrant to purchase preferred shares to warrants for the purchase of common stock and adjusted for the Exchange Ratio and Reverse Stock Split	(4,657,350)	1.94
Issuance of warrants for the purchase of common stock	5,000	19.80
Exercised	—	—
Cancelled	—	—
Outstanding warrants to purchase common shares as of March 31, 2019	494,050	$	20.39	3.04

The following table provides a roll forward of outstanding warrants for the three month period ended March 31, 2020:

	Number of warrants	Weighted Average Exercise Price	Weighted Average Contractual Term (Years)
Outstanding and exercisable warrants to purchase common shares as of December 31, 2019	13,656,871	$13.68	4.59
Issued	—
Exercised	—
Cancelled	—
Outstanding and exercisable warrants to purchase common shares as of March 31, 2020	13,656,871	$13.68	4.34

As of March 31, 2020, the Company’s outstanding warrants to purchase shares of common stock consisted of the following:

Issuance Date	Number of Shares of Common Stock Issuable	Exercise Price		Classification	Expiration Date
August 14, 2015	81,228	$	21.78	Equity	August 14, 2020
August 21, 2015	69,603	$	21.78	Equity	August 21, 2020
October 25, 2016	5,155	$	19.78	Equity	October 24, 2026
November 1, 2017	130,609	$	19.78	Equity	October 31, 2020
November 17, 2017	8,442	$	19.78	Equity	November 16, 2020
December 4, 2017	5,661	$	19.78	Equity	December 3, 2020
December 28, 2017	6,925	$	19.78	Equity	December 27, 2020
December 28, 2017	115,916	$	19.78	Equity	December 28, 2027
September 12, 2018	25,275	$	19.78	Equity	September 12, 2021
September 12, 2018	20,220	$	19.78	Equity	September 12, 2028
October 19, 2018	20,016	$	19.78	Equity	October 19, 2028
March 13, 2019	5,000	$	19.80	Equity	March 12, 2029
April 16, 2019	3,866,154	$	13.20	Equity	April 15, 2024
April 16, 2019	2,130,000	$	11.00	Equity	n/a
November 29, 2019	5,416,667	$	15.00	Equity	November 28, 2024
November 29, 2019	1,750,000	$	12.00	Equity	n/a
	13,656,871