v3.21.1
UNAUDITED CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($)
$ in Thousands
Mar. 31, 2021
Dec. 31, 2020
Current assets    
Cash and cash equivalents $ 32,432 $ 56,882
Marketable securities - available-for-sale debt securities 285,512 311,335
Other current assets and prepaid expenses 41,349 29,935
Total current assets 359,293 398,152
Restricted cash 4,604 4,602
Operating lease right-of-use assets, net of accumulated amortization 18,326 18,880
Property, plant and equipment, net of accumulated depreciation of $32,703 (2020: $31,097) 27,739 27,778
Intangibles, net of accumulated amortization 1,619 1,730
Total assets 411,581 451,142
Current liabilities    
Accounts payable 4,116 6,389
Operating lease liabilities, current 2,845 2,773
Accrued expenses and other accrued liabilities 22,263 27,079
Deferred revenue, current 2,083 2,832
Total current liabilities 31,307 39,073
Operating lease liabilities, non-current 19,897 20,938
Deferred revenue, non-current 50,565 49,260
Other liabilities, non-current 655 644
Total liabilities 102,424 109,915
Stockholders' equity    
Common stock - Ordinary shares par value ?0.001, 1,038,249,630 authorized and 932,817,168 issued and outstanding (2020: 1,038,249,630 authorized and 928,754,958 issued and outstanding) 1,331 1,325
Additional paid in capital 941,569 935,706
Accumulated other comprehensive loss (10,224) (10,048)
Accumulated deficit (623,519) (585,756)
Total stockholders' equity 309,157 341,227
Total liabilities and stockholders' equity $ 411,581 $ 451,142

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