Net Loss per Common Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Computation of Basic and Diluted Net Loss per Common Share

The following table sets forth the computation of basic and diluted net loss per common share:

	Year ended December 31,
	2020			2019			2018
Basic and diluted net loss per common share:
Net loss	$	(102,900,600	)	$	(68,345,186	)	$	(30,965,464	)
Weighted average common shares outstanding—basic and diluted		37,206,928			34,020,257			26,883,656
Net loss per common share—basic and diluted	$	(2.77	)	$	(2.01	)	$	(1.15	)

Schedule of Potentially Dilutive Securities

The following potentially dilutive securities outstanding at December 31, 2020, 2019, and 2018 have been excluded from the computation of diluted weighted average shares outstanding, as they would be anti‑dilutive:

	December 31,
	2020		2019		2018
Stock options		3,733,916		3,458,447		2,291,163
Restricted stock units		136,067		—		—
Warrants		15,541		69,656		123,037
Total		3,885,524		3,528,103		2,414,200