v3.25.2
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Operating activities:    
Net loss $ (34,075) $ (32,592)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 9,392 11,050
Share-based compensation 8,255 11,078
Amortization of discounts on short-term investments, net (442) (999)
Deferred income taxes, net 13 (4,515)
Change in estimated fair value of contingent liabilities 225 (2,513)
Gain on sale of ion channel asset (3,000) 0
Other 120 533
Changes in operating assets and liabilities, net:    
Accounts receivable, net 2,599 (2,594)
Prepaid expenses and other current assets 135 875
Other long-term assets 374 478
Accounts payable, accrued expenses, and other liabilities (1,771) (3,588)
Operating lease liabilities (1,381) (1,229)
Deferred revenue (1,462) (5,198)
Net cash used in operating activities (21,018) (29,214)
Investing activities:    
Purchases of short-term investments (18,595) (16,685)
Proceeds from the maturity of short-term investments 27,300 50,500
Purchases of property and equipment (374) (1,677)
Payment of contingent liabilities 0 (400)
Proceeds from sale of short-term investments 90 1,312
Proceeds from sale of ion channel asset 3,000 0
Net cash provided by investing activities 11,421 33,050
Financing activities:    
Payment of contingent liabilities 0 (75)
Proceeds from issuance of common stock from stock plans 341 2,145
Taxes paid related to net share settlement of equity awards 0 (960)
Payment of transaction costs (61) (510)
Net cash provided by financing activities 280 600
Net change in cash, cash equivalents and restricted cash (9,317) 4,436
Cash, cash equivalents and restricted cash at beginning of period 28,158 16,918
Cash, cash equivalents and restricted cash at end of period 18,841 21,354
Supplemental cash flow information:    
Deferred revenue recorded in accounts receivable 33 471
Supplemental non-cash investing and financing activities:    
Purchase of fixed assets recorded in accounts payable and other current liabilities $ 105 $ 155