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v3.19.1

Consolidated Balance Sheets - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Current assets |  |
Cash and cash equivalents | $ 5,569 | $ 3,169
Investment securities | 56,088 | 72,453
Prepaid expenses and other current assets | 1,781 | 1,310
Total current assets | 63,438 | 76,932
Property, plant and equipment, net | 96,026 | 92,070
Operating lease right-of-use assets, net | 1,378 |
Total assets | 160,842 | 169,002
Current liabilities |  |
Accounts payable | 1,513 | 719
Share-based compensation liability | 402 | 3,018
Accrued liabilities and other current liabilities | 4,187 | 8,353
Current operating lease liabilities | 1,320 |
Total current liabilities | 7,422 | 12,090
Non-current Common Stock Warrant liabilities | 7,638 | 7,441
Non-current operating lease liabilities | 352 |
Total liabilities | 15,412 | 19,531
Commitments and contingencies (Note 11) |  |
Stockholders’ equity |  |
Common stock, $0.0001 par value Authorized: 480.0 million shares at March 31, 2019 and December 31, 2018 Issued and outstanding: 107.0 million shares and 106.9 million shares at March 31, 2019 and December 31, 2018, respectively | 11 | 11
Treasury stock: 71,566 shares and 6,425 shares at March 31, 2019 and December 31, 2018, respectively, at cost | (295) | (35)
Preferred stock, $0.0001 par value Authorized: 0.9 million, after designation of the Series A and Series B Convertible Preferred Stock Issued and outstanding: none at March 31, 2019 and December 31, 2018 |  |
Additional paid-in-capital | 183,834 | 180,862
Accumulated deficit | (109,873) | (97,617)
Total stockholders’ equity | 73,677 | 83,221
Total liabilities, Series A and Series B Convertible Preferred Stock and stockholders’ equity | 160,842 | 169,002
Series A Convertible Preferred stock |  |
Current liabilities |  |
Convertible Preferred Stock | 43,775 | 40,091
Series B Convertible Preferred stock |  |
Current liabilities |  |
Convertible Preferred Stock | $ 27,978 | $ 26,159

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