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Consolidated Statements of Cash Flows - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES: |  |
Net loss | $ (477,117) | $ (30,419)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation | 572 | 436
Non-cash interest expense | 80 | 91
Stock-based compensation expense | 7,922 | 310
Loss on extinguishment of debt | 0 | 62
Change in fair value of warrant liabilities | 37,584 | 1,296
Loss on revaluation of derivative liabilities | 223,165 | 11,532
Change in earnout liabilities | 154,806 | 0
PPP loan forgiveness | (948) | 0
Changes in operating assets and liabilities: |  |
Prepaid expenses and other assets | (4,673) | (135)
Accounts payable | 886 | (221)
Deferred revenue, current | 3,663 | 0
Accrued and other liabilities | 2,211 | 403
Net cash used in operating activities | (51,849) | (16,645)
CASH FLOWS FROM INVESTING ACTIVITIES: |  |
Purchases of property and equipment | (2,767) | (502)
Net cash used in investing activities | (2,767) | (502)
CASH FLOWS FROM FINANCING ACTIVITIES: |  |
Borrowings on notes payable | 20,000 | 4,936
Principal payments on notes payable | (21,067) | (221)
Proceeds from stock options exercised | 671 | 7
Net cash contributions from Business Combination and PIPE Financing | 258,730 | 0
Payments made towards offering costs | (7,895) | 0
Proceeds from warrants exercised | 10,995 | 0
Proceeds from exercise of Legacy ESS Series C-2 redeemable convertible preferred stock purchase rights and C-2 warrants upon Business Combination | 15,559 | 0
Proceeds from sale of Legacy ESS Series C-2 redeemable convertible preferred stock, net of issuance costs | 11,461 | 0
Net cash provided by financing activities | 288,454 | 4,722
NET CHANGE IN CASH, CASH EQUIVALENTS AND RESTRICTED CASH | 233,838 | (12,425)
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, BEGINNING OF YEAR | 6,394 | 18,819
CASH, CASH EQUIVALENTS AND RESTRICTED CASH, END OF YEAR | 240,232 | 6,394
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION: |  |
Interest | 1,799 | 111
Non-cash investing and financing transactions: |  |
Property and equipment purchases financed with term loan | 0 | 52
Purchase of property and equipment included in accounts payable and accrued and other current liabilities | 526 | 55
Extinguishment of derivative liabilities upon sale of Legacy ESS Series C-2 redeemable convertible preferred stock, net of amount allocated to warrants | 18,055 | 0
Extinguishment of warrant liabilities upon exercise of Legacy ESS Series B, Series C-1 and Series C-2 redeemable convertible preferred stock warrants | 26,178 | 0
Assumption of accrued expenses upon Business Combination | 75 | 0
Assumption of private and public warrant liabilities upon Business Combination | 11,833 | 0
Assumption of earnout warrant liabilities upon Business Combination | 502 | 0
Assumption of earnout liability upon Business Combination | 109,507 | 0
Extinguishment of earnout liability upon achievement of earnout and issuance of shares | 263,338 | 0
Extinguishment of derivative liability upon exercise of Legacy ESS Series C-2 purchase right and related Series C-2 warrant liability upon Business Combination | 222,924 | 0
Extinguishment of public warrant liability upon exercise of warrants | 4,143 | 0
Cash and cash equivalents | 238,940 | 4,901
Restricted cash, current | 1,217 | 1,167
Restricted cash, non-current | 75 | 326
Total cash, cash equivalents and restricted cash shown in the statements of cash flows | $ 240,232 | $ 6,394

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