Quarterly report pursuant to Section 13 or 15(d)

CONDENSED STATEMENTS OF CASH FLOWS

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CONDENSED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Operating activities    
Net loss $ (20,136) $ (40,937)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation expense 4,930 5,598
Loss (gain) on sale and disposal of fixed assets 398 (253)
Depreciation and amortization 653 474
Non-cash interest expense   682
Net amortization and accretion of discount on short-term investments and term loan (114) 107
Changes in assets and liabilities:    
Accounts receivable, net 19,501 (1,726)
Inventories (1,640) 483
Prepaid and other current assets 3,292 (527)
Other assets 99 571
Right-of-use assets 933 4,458
Accounts payable (2,268) (1,585)
Accrued compensation (2,127) (3,165)
Accrued research and development (1,882) (1,171)
Revenue reserves and refund liability 1,539 2,316
Other accrued liabilities (1,472) 1,878
Lease liability (1,011) (4,840)
Deferred revenue (14) (1,053)
Other current and long-term liabilities 1,175 142
Net cash provided by (used in) operating activities 1,856 (38,548)
Investing activities    
Purchases of short-term investments (8,780) (6,997)
Maturities of short-term investments 27,400 50,645
Purchases of intangible asset (15,000)  
Proceeds from sale of property and equipment 127 264
Purchases of property and equipment   (188)
Net cash provided by investing activities 3,747 43,724
Financing activities    
Cost share payments to a collaboration partner (1,754) (8,346)
Net proceeds from issuances of common stock upon exercise of options and participation in Purchase Plan 554 1,539
Net proceeds from term loan financing 19,950 9,942
Net cash provided by financing activities 18,750 3,135
Net increase in cash and cash equivalents 24,353 8,311
Cash and cash equivalents at beginning of period 24,459 18,890
Cash and cash equivalents at end of period 48,812 27,201
Supplemental disclosure of cash flow information    
Interest paid $ 2,485 $ 951