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CONDENSED BALANCE SHEETS - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Current Assets: |  |
Cash and cash equivalents | $ 120,879 | $ 97,804
Other receivables - related party | 41 | 15
Prepaid expenses and other current assets | 1,028 | 1,715
Total current assets | 121,948 | 99,534
Property, plant and equipment, net | 9,418 | 7,529
Fixed assets - construction in process | 1,019 | 499
Restricted cash | 1,000 | 1,000
Other assets | 254 | 250
Operating lease right-of-use asset, net | 1,067 | 1,088
Total Assets | 134,706 | 109,900
Current Liabilities: |  |
Accounts payable and accrued expenses | 9,834 | 8,747
Payables and accrued expenses - related party | 296 | 490
Operating lease liabilities - short-term | 329 | 278
Total current liabilities | 10,459 | 9,515
Deferred income | 270 | 0
Operating lease liabilities - long-term | 1,763 | 1,950
Total Liabilities | 12,492 | 11,465
Commitments and Contingencies |  |
Stockholders' Equity |  |
Preferred stock ($0.0001 par value), 2,000,000 shares authorized, 250,000 shares of Class A preferred stock issued and outstanding as of September 30, 2021 and December 31, 2020, respectively | 0 | 0
Common stock issuable, 13,831 and 2,103,122 shares as of September 30, 2021 and December 31, 2020, respectively | 37 | 7,939
Additional paid-in capital | 353,963 | 275,963
Accumulated deficit | (231,795) | (185,474)
Total Stockholders' Equity | 122,214 | 98,435
Total Liabilities and Stockholders' Equity | 134,706 | 109,900
Class A Common Shares [Member] |  |
Stockholders' Equity |  |
Common Stock ($0.0001 par value), 150,000,000 and 125,000,000 shares authorized as of September 30, 2021 and December 31, 2020, respectively | 0 | 0
Common Shares [Member] |  |
Stockholders' Equity |  |
Common Stock ($0.0001 par value), 150,000,000 and 125,000,000 shares authorized as of September 30, 2021 and December 31, 2020, respectively | $ 9 | $ 7

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