CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($)
|
Jun. 30, 2018 |
Dec. 31, 2017 |
| Current assets: |
|
|
| Cash and cash equivalents |
$ 94,960,535
|
$ 51,574,932
|
| Short-term investments |
160,547,550
|
78,083,604
|
| Prepaid expenses and other current assets |
6,074,268
|
1,944,751
|
| Total current assets |
261,582,353
|
131,603,287
|
| Property and equipment, net |
6,942,457
|
3,154,205
|
| Deferred offering costs |
|
1,000,262
|
| Restricted cash |
1,789,962
|
1,772,587
|
| Total assets |
270,314,772
|
137,530,341
|
| Current liabilities: |
|
|
| Accounts payable |
5,017,426
|
2,538,057
|
| Accrued expenses and other liabilities |
2,358,433
|
2,860,025
|
| Deferred rent |
|
122,601
|
| Deferred revenue |
3,499,700
|
3,341,063
|
| Total current liabilities |
10,875,559
|
8,861,746
|
| Non-current liabilities: |
|
|
| Deferred rent, net of current portion |
2,893,331
|
290,923
|
| Deferred revenue, net of current portion |
29,747,451
|
30,069,563
|
| Total liabilities |
43,516,341
|
39,222,232
|
| Commitments and contingencies (Note 6) |
|
|
| Convertible preferred stock: |
|
|
| Total convertible preferred stock |
|
137,762,160
|
| Stockholders’ equity (deficit): |
|
|
| Preferred stock, $0.0001 par value, 10,000,000 shares authorized as of June 30, 2018 and no shares authorized as of December 31, 2017; no shares issued and outstanding at June 30, 2018 and December 31, 2017 |
|
|
| Common stock, $0.0001 par value; 200,000,000 and 170,000,000 shares authorized as of June 30, 2018 and December 31, 2017, respectively; 37,474,649 and 2,902,109 shares issued as of June 30, 2018 and December 31, 2017, respectively; and 37,254,902 and 2,637,011 shares outstanding as of June 30, 2018 and December 31, 2017, respectively |
3,726
|
264
|
| Additional paid-in capital |
290,442,015
|
799,859
|
| Accumulated other comprehensive loss |
(48,646)
|
(73,308)
|
| Accumulated deficit |
(63,598,664)
|
(40,180,866)
|
| Total stockholders’ equity (deficit) |
226,798,431
|
(39,454,051)
|
| Total liabilities, convertible preferred stock and stockholders' equity (deficit) |
$ 270,314,772
|
137,530,341
|
| Series A Convertible Preferred Stock |
|
|
| Convertible preferred stock: |
|
|
| Total convertible preferred stock |
|
42,994,550
|
| Series B Convertible Preferred Stock |
|
|
| Convertible preferred stock: |
|
|
| Total convertible preferred stock |
|
$ 94,767,610
|