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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands, shares in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 290,601 | $ 302,028
Restricted cash | 10,000 | 10,000
Accounts receivable, net of allowance for credit losses of $64 and $49 as of March 31, 2024 and December 31, 2023, respectively | 5,096 | 5,942
Prepaid expenses and other current assets | 5,915 | 6,721
Total current assets | 311,612 | 324,691
Property and equipment, net | 14,821 | 14,549
Marketable securities, non-current | 447 | 1,125
Non-marketable equity securities | 52,768 | 52,768
Other non-current assets | 2,703 | 2,693
Total assets | 382,351 | 395,826
Current liabilities: |  |
Accounts payable | 11,371 | 1,712
Operating lease liabilities, current | 1,257 | 1,364
Other current liabilities | 48,854 | 46,782
Total current liabilities | 61,482 | 49,858
Operating lease liabilities, non-current | 10,250 | 10,573
Common stock warrant liabilities, non-current | 2 | 11
Long-term debt, net of current portion | 124,345 | 123,935
Other non-current liabilities | 716 | 960
Total liabilities | 196,795 | 185,337
Commitments and contingencies (Note 9) |  |
Stockholders’ equity: |  |
Preferred stock $0.0001 par value; $10.0 million shares authorized — 0 issued and outstanding as of March 31, 2024 and December 31, 2023 | 0 | 0
Common stock $0.0001 par value; 31.3 million shares authorized; Class A common stock – 25.0 million shares authorized; 18.1 million and 18.1 million shares issued; 14.6 million and 15.8 million outstanding as of March 31, 2024 and December 31, 2023, respectively; Class B common stock – 6.3 million shares authorized; 3.4 million shares issued and outstanding as of March 31, 2024 and December 31, 2023 | 1 | 1
Treasury stock at cost, 3.5 million and 2.3 million as of March 31, 2024 and December 31, 2023, respectively | (19,956) | (13,000)
Additional paid-in capital | 1,206,703 | 1,197,963
Accumulated other comprehensive loss | (1) | (7)
Accumulated deficit | (1,001,191) | (974,468)
Total stockholders’ equity | 185,556 | 210,489
Total liabilities and stockholders’ equity | $ 382,351 | $ 395,826
Convertible preferred stock, shares authorized (in shares) | 10.0 | 10.0
Convertible preferred stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001
Common stock, shares authorized (in shares) | 31.3 | 31.3

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