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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022
CASH FLOWS FROM OPERATING ACTIVITIES |  |
Net loss | $ (59,713) | $ (51,398)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Net accretion of discount on investment securities and net realized investment gains | 417 | (863)
Noncash lease expense on operating leases | 2,350 | 2,457
Depreciation and amortization | 24,912 | 20,151
Stock-based compensation | 25,177 | 17,049
Impairment of capitalized internal-use software | 232 | 0
(Gain) loss on disposal of assets | (292) | 37
Changes in operating assets and liabilities: |  |
Accounts receivable | 56 | (547)
Prepaid expenses and other current assets | (445) | (379)
Other assets | (389) | 1,001
Accounts payable | (295) | 1,627
Accrued expenses and other current liabilities | (1,422) | (970)
Deferred revenue | 4,526 | 670
Operating lease liabilities | (2,464) | (2,547)
Other long-term liabilities | 0 | (69)
Net cash used in operating activities | (7,350) | (13,781)
CASH FLOWS FROM INVESTING ACTIVITIES |  |
Purchases of marketable securities | (26,358) | (145,871)
Maturities of marketable securities | 67,874 | 88,000
Proceeds from disposal of property and equipment | 369 | 0
Purchases of property and equipment | (5,512) | (7,349)
Capitalized internal-use software costs | (14,716) | (8,634)
Net cash provided by (used in) investing activities | 21,657 | (73,854)
CASH FLOWS FROM FINANCING ACTIVITIES |  |
Principal payments on finance lease and lease financing obligations | (19,510) | (16,492)
Payments of deferred offering costs | 0 | (658)
Proceeds from debt facility | 4,273 | 4,305
Repayment of debt facility | (4,450) | 0
Proceeds from insurance premium financing | 893 | 0
Principal payments on insurance premium financing | (1,545) | 0
Proceeds from lease financing obligations | 4,450 | 0
Employee payroll taxes paid related to net settlement of equity awards | 0 | (130)
Proceeds from exercises of stock options | 4,708 | 4,252
Proceeds from ESPP | 2,339 | 2,511
Net cash used in financing activities | (8,842) | (6,212)
Net increase (decrease) in cash, restricted cash and restricted cash, non-current | 5,465 | (93,847)
Cash, restricted cash, current and restricted cash, non-current at beginning of period | 11,165 | 105,012
Cash, restricted cash, current and restricted cash, non-current at end of period | 16,630 | 11,165
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Cash paid for interest | 3,733 | 3,776
Cash paid for income taxes | 59 | 31
Cash paid for operating lease liabilities | 2,801 | 2,838
SUPPLEMENTAL DISCLOSURE OF NON-CASH INVESTING AND FINANCING ACTIVITIES |  |
Stock-based compensation included in capitalized internal-use software | 4,960 | 2,674
Accrued bonus settled in restricted stock units | 1,848 | 0
Accrued bonus classified as stock-based compensation | 3,034 | 1,852
Financed insurance premiums included in accrued expenses and other current liabilities | 0 | 1,545
Equipment acquired through finance lease and lease financing obligations | 13,094 | 17,037
Accruals related to purchases of property and equipment | 60 | 158
Lease liabilities arising from right-of-use assets upon adoption of ASC 842 | 0 | 5,220
Assets obtained in exchange for operating lease obligations | 5,448 | 4,118
Receivable recorded due to stock option exercises pending settlement | 18 | 156
RECONCILIATION OF CASH AND RESTRICTED CASH |  |
Cash and cash equivalents | 12,502 | 6,690
Restricted cash – included in prepaid expenses and other current assets |  | 169
Restricted cash, non-current | 4,128 | 4,306
Total cash, cash equivalents, restricted cash, current and restricted cash, non-current | $ 16,630 | $ 11,165

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