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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Operating activities: |  |  |
Net loss | $ (28,214,000) | $ (88,722,000) | $ (104,375,000)
Adjustments to reconcile net loss to net cash used in operating activities: |  |  |
Depreciation and amortization | 2,540,000 | 3,845,000 | 5,430,000
Amortization of internally developed software | 17,376,000 | 17,263,000 | 12,901,000
Amortization of intangible assets | 0 | 0 | 536,000
Stock-based compensation expense | 23,213,000 | 20,316,000 | 32,857,000
Deferred income taxes | (2,672,000) | (18,436,000) | (21,522,000)
Impairment charges | 0 | 12,102,000 | 46,344,000
Other non-cash items | 701,000 | 2,084,000 | 1,466,000
Changes in operating assets and liabilities: |  |  |
Accounts receivable | (1,361,000) | 3,118,000 | (3,952,000)
Contract assets – commissions receivable | (33,594,000) | 23,760,000 | (116,030,000)
Prepaid expenses and other assets | (1,948,000) | 13,473,000 | (7,945,000)
Accounts payable | 487,000 | (7,029,000) | (23,052,000)
Accrued compensation and benefits | 20,110,000 | 4,232,000 | (4,083,000)
Accrued marketing expenses | (3,430,000) | (12,614,000) | 18,596,000
Deferred revenue | 1,278,000 | 175,000 | 20,000
Accrued expenses and other liabilities | (1,178,000) | (436,000) | 187,000
Net cash used in operating activities | (6,692,000) | (26,869,000) | (162,622,000)
Investing activities: |  |  |
Capitalized internal-use software and website development costs | (8,693,000) | (15,292,000) | (16,992,000)
Purchases of property and equipment and other assets | (2,086,000) | (214,000) | (3,865,000)
Purchases of marketable securities | (54,514,000) | (8,402,000) | (103,058,000)
Proceeds from redemption and maturities of marketable securities | 49,400,000 | 49,769,000 | 111,284,000
Net cash provided by (used in) investing activities | (15,893,000) | 25,861,000 | (12,631,000)
Financing activities: |  |  |
Proceeds from issuance of preferred stock, net of issuance costs | 0 | 0 | 214,025,000
Net proceeds from debt financing | 0 | 64,862,000 | 0
Net proceeds from exercise of common stock options and employee stock purchases | 677,000 | 2,214,000 | 8,699,000
Repurchase of shares to satisfy employee tax withholding obligations | (3,330,000) | (3,102,000) | (9,333,000)
Principal payments in connection with leases | (38,000) | (136,000) | (150,000)
Payments of preferred stock dividends | (3,533,000) | 0 | 0
Net cash provided by (used in) financing activities | (6,224,000) | 63,838,000 | 213,241,000
Effect of exchange rate changes on cash, cash equivalents and restricted cash | (19,000) | (355,000) | 64,000
Net increase (decrease) in cash, cash equivalents and restricted cash | (28,828,000) | 62,475,000 | 38,052,000
Cash, cash equivalents and restricted cash at beginning of period | 147,640,000 | 85,165,000 | 47,113,000
Cash, cash equivalents and restricted cash at end of period | 118,812,000 | 147,640,000 | 85,165,000
Supplemental disclosure of cash flows |  |  |
Cash paid for interest | 9,054,000 | 5,031,000 | 0
Cash refunds from (payments for) income taxes, net | $ (327,000) | $ (529,000) |
Cash refunds from (payments for) income taxes, net |  |  | $ 103,000

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