Quarterly report pursuant to Section 13 or 15(d)

Condensed Consolidated Statements of Cash Flows

v3.23.3
Condensed Consolidated Statements of Cash Flows - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2023
Sep. 30, 2022
Dec. 31, 2022
Cash flows from operating activities:          
Net loss $ (11,836) $ (6,434) $ (37,597) $ (32,575)  
Adjustments to reconcile net loss to cash used in operating activities:          
Depreciation and amortization     1,797 2,364  
Stock-based compensation expense 1,557 632 3,254 2,218  
Change in fair value of warrant liabilities 1,101 (3,050) 7,465 (5,995)  
Non-cash impairment of licensed technology 1,355  
Non-cash loss/(gain) of right-of-use lease assets     (1,065) 1,561  
Non-cash impairment of construction-in-progress     1,792  
Accretion and interest on short-term investments     134 (206)  
Amortization of right-of-use lease assets     680 1,204  
Non-cash interest     309 558  
Loss on disposal of property and equipment     52 121  
Change in operating assets and liabilities:          
Accounts receivable     3,000  
Other receivables     (2,021) (1,047)  
Prepaid expenses and other current assets     (539) 1,432  
Other assets     (96) 148  
Accounts payable, accrued expenses and lease liabilities     (142) (5,125)  
Other current liabilities     (5) (296)  
Net cash used in operating activities     (27,774) (29,491)  
Cash flows from investing activities:          
Capital expenditures     (294) (105)  
Proceeds from disposal of property and equipment     187 1,590  
Purchases of short-term investments     (48,219) (43,866)  
Proceeds from maturities of short-term investments     37,005 43,707  
Net cash provided by (used in) investing activities     (11,321) 1,326  
Cash flows from financing activities:          
Proceeds from ATM sales of common stock, net of issuance costs     6,623 4,189  
Proceeds from sales of common stock under direct placement offering, net of issuance costs     22,980  
Proceeds from net settlement of restricted share awards     (13)  
Proceeds from issuance of Series A and Series B Convertible Redeemable Preferred Stock, net of issuance costs     22,468  
Redemption of Series A and Series B Convertible Redeemable Preferred Stock     (26,250)  
Net cash provided by financing activities     29,590 407  
Net decrease in cash, cash equivalents and restricted cash     (9,505) (27,758)  
Cash, cash equivalents and restricted cash at beginning of period     14,555 38,829 $ 38,829
Cash, cash equivalents and restricted cash at end of period 5,050 11,071 5,050 11,071 14,555
Supplemental cash flow information:          
Cash and cash equivalents 4,712 5,733 4,712 5,733 $ 14,217
Restricted cash 338 5,338 338 5,338  
Total cash, cash equivalents and restricted cash $ 5,050 $ 11,071 5,050 11,071  
Supplemental non-cash flow information:          
Right-of-use asset obtained in exchange for new operating lease liabilities     $ 419