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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Cash flows from operating activities    
Net loss $ (22,737) $ (13,723)
Adjustments to reconcile net loss to net cash used in operations:    
Depreciation expense 426 311
Non-cash lease expense 920 322
Stock-based compensation 1,746 891
Other 65  
Changes in operating assets and liabilities:    
Operating lease liability (727) (16)
Prepaid expenses and other current assets (1,740) (3,131)
Accounts payable and accrued liabilities (722) (2,444)
Other assets (135) 141
Net cash used in operating activities (22,904) (17,649)
Cash flow from investing activities    
Purchases of marketable securities (5,044)  
Purchases of property and equipment (2,011) (1,171)
Net cash used in investing activities (7,055) (1,171)
Cash flow from financing activities    
Proceeds from issuance of redeemable convertible preferred stock   45,375
Proceeds from the issuance of common stock upon closing of initial public offering, net of underwriter fees   189,199
Payment of initial public offering costs   (1,744)
Proceeds from stock option exercises 200 18
Net cash provided by financing activities 200 232,848
Net (decrease) increase in cash, cash equivalents and restricted cash equivalents (29,759) 214,028
Cash, cash equivalents and restricted cash equivalents, beginning of period 122,214 50,098
Cash, cash equivalents and restricted cash equivalents, end of period 92,455 264,126
Supplemental disclosure of non-cash activities    
Lease incentive paid by the landlord on behalf of the Company 1,509  
Operating right-of-use assets and operating lease liability recorded upon lease commencement 6,266  
Purchases of property and equipment in accounts payable and accrued liabilities $ 3,539 149
Conversion of redeemable convertible preferred stock to common stock upon closing of the initial public offering   152,711
Deferred offering costs in accounts payable and accrued expenses   $ 471