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Condensed Consolidated Balance Sheets (unaudited) - USD ($)
$ in Millions
Jun. 30, 2022
Dec. 31, 2021
Current assets:    
Cash and cash equivalents $ 93.2 $ 108.3
Restricted cash 4.5 4.5
Marketable securities 1,250.0 1,394.3
Accounts receivable 1.4 15.0
Other receivables 6.7 10.7
Prepaid expenses and other current assets 20.6 19.7
Total current assets 1,376.4 1,552.5
Property, equipment and leasehold improvements, net 13.6 12.7
Operating lease right of use assets 5.3 3.9
Collaboration contract asset and other assets 11.7 12.5
Total assets 1,407.0 1,581.6
Current liabilities:    
Accounts payable and accrued liabilities 42.1 54.4
Deferred revenue 194.4 206.2
Current portion of operating lease liability 1.7 1.1
Total current liabilities 238.2 261.7
Deferred revenue 493.6 534.3
Long term debt 1.0 1.0
Operating lease liability 3.6 2.9
Total liabilities 736.4 799.9
Commitments and Contingencies
Stockholders’ equity:    
Common stock, $0.001 par value; 53.2 and 53.0 shares issued and outstanding as of June 30, 2022 and December 31, 2021, respectively 0.1 0.0
Accumulated deficit (816.3) (682.9)
Additional paid-in capital 1,508.8 1,469.2
Accumulated other comprehensive loss (22.0) (4.6)
Total stockholders’ equity 670.6 781.7
Total liabilities and stockholders’ equity $ 1,407.0 $ 1,581.6