Common Stock (Tables)

12 Months Ended

Dec. 31, 2019

Common Stock.

Schedule of reserved common stock

	As of
	December 31,
	2019
Common shares reserved for exercise of a warrant	7,614
Common shares reserved for future issuance under the 2018 ESPP	497,920
Common shares reserved for exercise of outstanding stock options under the 2017 and 2018 Plans	2,401,382
Common shares reserved for future issuance under the 2018 Plan	2,684,464
	5,591,380