Annual report pursuant to Section 13 and 15(d)

BALANCE SHEETS

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BALANCE SHEETS - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Current assets:    
Cash and cash equivalents $ 18,890 $ 30,373
Short-term investments 106,077 26,954
Accounts receivable, net 15,472 15,973
Inventories 6,616 1,638
Prepaid and other current assets 7,412 14,045
Total current assets 154,467 88,983
Property and equipment, net 2,184 2,676
Operating lease right-of-use asset 9,703 17,895
Other assets 974 824
Total assets 167,328 110,378
Current liabilities:    
Accounts payable 3,795 3,707
Accrued compensation 10,690 9,592
Accrued research and development 10,384 4,889
Other accrued liabilities 12,691 11,014
Lease liabilities, current portion 9,892 8,621
Deferred revenue 2,596 3,018
Other long-term liabilities, current portion 13,506  
Total current liabilities 63,554 40,841
Long-term portion of lease liabilities 759 10,651
Loans payable, net of discount 19,914 19,815
Other long-term liabilities 52,727 5,045
Commitments
Stockholders' equity:    
Preferred stock, $0.001 par value; 10,000,000 shares authorized; none issued and outstanding as of December 31, 2021 and 2020
Common stock, $0.001 par value; 400,000,000 shares authorized; 171,602,226 and 169,316,782 shares issued and outstanding as of December 31, 2021 and 2020, respectively 172 169
Additional paid-in capital 1,354,190 1,339,833
Accumulated other comprehensive income (loss) (102) (4)
Accumulated deficit (1,323,886) (1,305,972)
Total stockholders' equity 30,374 34,026
Total liabilities and stockholders' equity $ 167,328 $ 110,378