Quarterly report pursuant to Section 13 or 15(d)

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited)

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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Operating activities    
Net loss $ (25,146) $ (14,228)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 681 666
Amortization of right-of-use asset 66 65
Stock-based compensation expense 2,863 2,930
Change in fair value of warrant liability (2,448) (7,670)
Net amortization of premiums and discounts on marketable securities 76  
Amortization of debt-discount and accretion of deferred debt costs 185 167
Changes in operating assets and liabilities:    
Prepaid expenses and other current assets 203 329
Accounts receivable   7
Contract assets (203) (298)
Other long-term assets (338) (27)
Accounts payable (969) 63
Accrued expenses (2,372) (1,680)
Deferred revenue (2,408) (2,134)
Operating lease asset and liabilities (207) (180)
Net cash used in operating activities (30,017) (21,990)
Investing activities    
Purchases of property and equipment (128) (262)
Maturities of marketable securities 7,511  
Net cash (used in) provided by investing activities 7,383 (262)
Financing activities    
Payments on financing lease obligations (70) (64)
Proceeds from issuance of common stock through employee benefit plans   157
Proceeds from the issuance of common stock through exercise of option 1  
Proceeds from issuance of common stock and warrants in public offerings, net of issuance costs   70,353
Payment of issuance costs related to out of period offering (24) (36)
Net cash (used in) provided by financing activities (93) 70,410
Net (decrease) increase in cash, cash equivalents and restricted cash (22,727) 48,158
Cash and cash equivalents, Beginning of period 95,388 177,070
Cash and cash equivalents, End of period 72,661 225,228
Supplemental disclosure of cash flow information:    
Cash paid for interest 783 789
Non-cash investing and financing activities:    
Property and equipment received but unpaid as of period end 165  
Offering costs incurred but unpaid as of period end $ 10 $ 26