Stockholders’ Equity (Tables)

12 Months Ended

Dec. 31, 2018

Equity [Abstract]

Schedule of Common Stock Reserved for Issuance

The Company has reserved shares of common stock, on an as-if-converted basis, for issuance as follows:

	December 31, 2018		December 31, 2017
Options and awards issued and outstanding		3,864,407		2,964,549
Shares available for issuance under 2015 Stock Option and Incentive Plan		904,785		863,538
Shares available for issuance under 2015 Employee Stock Purchase Plan		780,716		449,444
Total		5,549,908		4,277,531