Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements (Tables)

3 Months Ended

Mar. 31, 2019

Basis of Presentation, Summary of Significant Accounting Policies and Recent Accounting Pronouncements

Summary of potentially dilutive securities

	As of March 31,
	2019		2018
Options to purchase common stock		8,289,605		6,881,001
Unvested restricted stock awards		146,800		480,000
Unvested restricted stock units		1,461,917		-
		9,898,322		7,361,001