Redeemable convertible preferred stock (Tables)

12 Months Ended

Dec. 31, 2018

Redeemable convertible preferred stock

Schedule of redeemable convertible preferred stock

	Shares of
	Preferred
Preferred Stock	Stock
A‑1	3,972,415
A‑2	10,427,586
A‑3	2,000,000
B	6,021,636
C	8,092,895
C‑1	544,332
D	12,420,262
D‑1	2,113,902
Total	45,593,028