v3.26.1
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Cash flows from operating activities:    
Net loss $ (31,475) $ (29,082)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 3,077 3,085
Asset abandonment 4,327 0
Non-cash interest expense (income) 2,824 (155)
Non-cash lease expense 864 731
Stock-based compensation expense 1,745 2,699
Change in fair value of common stock warrant liabilities (510) (344)
Other non-cash expenses, net 1 199
Changes in operating assets and liabilities:    
Accounts receivable, net 3 86
Inventory 28 301
Prepaid expenses and other assets 1,350 468
Accounts payable (1,761) 1,268
Accrued and other liabilities (1,743) (1,485)
Accrued product warranties (187) (1,090)
Deferred revenue (79) (6,458)
Operating lease liabilities (866) (820)
Net cash used in operating activities (22,402) (30,597)
Cash flows from investing activities:    
Purchases of property and equipment (1,432) (1,491)
Maturities and purchases of short-term investments, net 7,655 18,411
Net cash provided by investing activities 6,223 16,920
Cash flows from financing activities:    
Proceeds from issuance of common stock via ATM, net of issuance costs 4,859 721
Proceeds from issuance of common stock and common stock warrants via RDO, net of issuance costs 13,553 0
Proceeds from financing arrangements 9,200 0
Payments on financing obligations (14,775) 0
Proceeds from stock options exercised 0 6
Proceeds from contributions to Employee Stock Purchase Plan 13 103
Repurchase of shares from employees for income tax withholding purposes 0 (27)
Net cash provided by financing activities 12,850 803
Net change in cash, cash equivalents and restricted cash (3,329) (12,874)
Cash, cash equivalents and restricted cash, beginning of period 15,901 15,195
Cash, cash equivalents and restricted cash, end of period 12,572 2,321
Supplemental disclosures of cash flow information:    
Operating leases included in cash used in operating activities 1,061 887
Interest 685 0
Non-cash investing and financing transactions:    
Purchase of property and equipment included in accounts payable and accrued and other current liabilities 435 4,277
Transfers between inventory and property and equipment, net 0 668
Cash and cash equivalents 10,848 797
Restricted cash, current 806 906
Restricted cash, non-current 918 618
Total cash, cash equivalents and restricted cash shown in the condensed consolidated statements of cash flows $ 12,572 $ 2,321