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v3.23.1

CONDENSED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Operating activities |  |
Net loss | $ (26,773) | $ (28,071)
Adjustments to reconcile net loss to net cash used in operating activities: |  |
Depreciation and amortization expense | (3) | 463
Non-cash lease expense | 902 | 842
Stock-based compensation | 2,912 | 3,722
Change in derivative liabilities | 70 | 15
Debt refinancing costs | 0 | 102
Gain on sale of equipment | 0 | (710)
Impairment of long-lived assets | 429 | 0
Non-cash interest expense | 1,044 | 109
Changes in operating assets and liabilities: |  |
Accounts receivable | (4,387) | (3,892)
Inventory | (16,601) | (3,487)
Prepaid commercial manufacturing | (268) | (9,393)
Prepaid expenses and other assets | (774) | 9,086
Accounts payable | (346) | 753
Accrued compensation and benefits | (2,474) | 882
Operating lease liabilities | (937) | (836)
Accrued and other liabilities | (1,396) | (1,041)
Deferred revenue | 3,807 | 3,836
Net cash used in operating activities | (44,795) | (27,620)
Investing activities |  |
Proceeds from maturities and redemptions of investments | 11,000 | 27,300
Purchases of investments | (20,763) | (25,763)
Proceeds from sale of property and equipment | 0 | 795
Purchases of property and equipment | (14) | 0
Net cash (used in) provided by investing activities | (9,777) | 2,332
Financing activities |  |
Proceeds from 2022 Loan, net of issuance costs | 0 | 26,971
Payments for 2018 Loan, net of costs | 0 | (33,038)
Proceeds from issuance of common stock in at the market offering, net of issuance costs | 50,719 | 5,921
Proceeds from issuance of common stock under equity incentive and stock purchase plans | 200 | 83
Net cash provided by (used in) financing activities | 50,919 | (63)
Net decrease in cash and cash equivalents | (3,653) | (25,351)
Cash and cash equivalents at beginning of period | 96,140 | 72,428
Cash and cash equivalents at end of period | 92,487 | 47,077
Supplementary disclosure of cash flow information: |  |
Cash paid for interest | 860 | 741
Cash paid for income taxes | 0 | 1
Supplementary disclosure of non-cash activities: |  |
Issuance of derivative in connection with issuance of loan payable | $ 0 | $ 375

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