v3.23.2
CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Operating activities    
Net loss $ (58,144) $ (31,955)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 6,795 10,359
Depreciation and amortization 118 126
Amortization expense component of lease expense 759 695
(Accretion)/amortization of available-for-sale marketable securities, net (56) 530
Changes in operating assets and liabilities:    
Accounts receivable, net - related party (6,864) (8,003)
Inventory, net (1,037) (876)
Other receivables 76 (13)
Prepaid expenses 1,291 (3,507)
Accounts payable and accrued expenses 2,935 3,471
Operating lease liabilities (936) (855)
Net cash used in operating activities (55,063) (30,028)
Investing activities    
Proceeds from maturities of available-for-sale marketable securities 72,265 94,250
Proceeds from redemptions of available-for-sale marketable securities, at par 4,000  
Purchases of available-for-sale marketable securities (25,754) (31,099)
Purchases of property and equipment   (43)
Net cash provided by investing activities 50,511 63,108
Financing activities    
Proceeds from the exercise of stock options 560 185
Net cash provided by financing activities 560 185
Net (decrease) increase in cash, cash equivalents and restricted cash (3,992) 33,265
Cash, cash equivalents and restricted cash at beginning of period 64,149 13,861
Cash, cash equivalents and restricted cash at end of period $ 60,157 $ 47,126