Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2018

Stockholders’ Equity

Summary of Common Stock Reserved for Future Issuance

	December 31,
	2018	2017
Options issued and outstanding	1,475,299	1,593,195
Shares available for future option grants	764,145	83,929
RSUs subject to future vesting	93,560	30,680
Common stock warrants	27,836	27,690
Total	2,360,840	1,735,494