Condensed Consolidated Balance Sheets (Unaudited) - USD ($)
|
Mar. 31, 2021 |
Dec. 31, 2020 |
| Current assets: |
|
|
| Cash and cash equivalents |
$ 38,496,108
|
$ 37,851,388
|
| Restricted deposit |
75,000
|
75,000
|
| Prepaid expenses and other current assets |
1,412,862
|
1,000,587
|
| Total current assets |
39,983,970
|
38,926,975
|
| Property and equipment, net |
15,093
|
11,191
|
| Right-of-use asset |
203,269
|
214,767
|
| Other assets |
5,580
|
5,580
|
| Total assets |
40,207,912
|
39,158,513
|
| Current liabilities: |
|
|
| Accounts payable |
1,370,679
|
1,487,948
|
| Accrued expenses |
4,566,320
|
5,290,181
|
| Convertible note payable, net |
0
|
14,216
|
| Derivative liability |
0
|
7,000
|
| Accrued interest |
0
|
488
|
| Lease liability, current portion |
50,102
|
48,629
|
| Total current liabilities |
5,987,101
|
6,848,462
|
| Lease liability, net of current portion |
154,846
|
167,938
|
| Total liabilities |
6,141,947
|
7,016,400
|
| Commitments and contingencies (Note 8) |
|
|
| Stockholders’ equity: |
|
|
| Preferred stock $0.0001 par value per share, 10,000,000 shares authorized; 0 shares issued and outstanding as of March 31, 2021 (unaudited) and December 31, 2020 |
0
|
0
|
| Common stock $0.0001 par value per share, 350,000,000 shares authorized; 216,324,896 and 204,629,064 shares issued and outstanding as of March 31, 2021 (unaudited) and December 31, 2020, respectively |
21,632
|
20,463
|
| Additional paid-in capital |
171,536,679
|
164,182,917
|
| Accumulated deficit |
(137,492,346)
|
(132,061,267)
|
| Total stockholders’ equity |
34,065,965
|
32,142,113
|
| Total liabilities and stockholders’ equity |
$ 40,207,912
|
$ 39,158,513
|