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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 $ (36,776) $ (17,332)
Adjustments to reconcile net loss to net cash used in operating activities:    
Stock-based compensation 3,880 2,709
Depreciation and amortization 1,806 1,539
Amortization of deferred costs 3,057 1,585
Non-cash operating lease expense 1,148 556
Loss on write-off of deferred stock issuance costs 581 0
Changes in operating assets and liabilities:    
Accounts receivable (579) (424)
Inventories (230) 0
Deferred costs (1,572) (1,939)
Prepaid expenses and other current assets 407 (2,282)
Other assets (9) 0
Accounts payable 616 517
Accrued and other current liabilities 3,065 1,155
Deferred revenue 54 516
Operating lease liabilities (1,001) (482)
Net cash used in operating activities (25,553) (13,882)
Cash flows from investing activities:    
Purchase of property, plant and equipment (17,550) (1,481)
Net cash used in investing activities (17,550) (1,481)
Cash flows from financing activities:    
Proceeds from issuance of common stock in connection with Business Combination and PIPE investment 0 77,884
Payment of transaction and issuance costs in connection with Business Combination and PIPE investment 0 (6,946)
Proceeds from exercise of stock options 310 44
Proceeds from exercise of stock warrants 1 2,465
Capital contributions from Amprius Holdings 0 505
Net cash provided by financing activities 19,168 73,626
Net (decrease) increase in cash, cash equivalents and restricted cash (23,935) 58,263
Cash, cash equivalents and restricted cash, beginning of year 69,752 11,489
Cash, cash equivalents and restricted cash, end of year 45,817 69,752
Components of cash, cash equivalents and restricted cash:    
Cash and cash equivalents 45,761 69,696
Restricted cash included in other assets 56 56
Total cash, cash equivalents and restricted cash 45,817 69,752
Supplemental disclosure of non-cash investing and financing information:    
Unpaid purchases of property, plant and equipment 1,864 83
Unpaid financing costs in connection with a stock purchase agreement 0 263
Stock Purchase Agreement    
Cash flows from financing activities:    
Proceeds from issuance of common stock 19,087 0
At Market Issuance Sales Agreement    
Cash flows from financing activities:    
Proceeds from issuance of common stock 371 0
Payment of financing costs in connection with the Stock Purchase and At Market Issuance Sales agreements $ (601) $ (326)