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Consolidated Statements of Cash Flows
12 Months Ended
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Cash Flows from Operating Activities    
Net loss $ (43,862,197) $ (35,400,807)
Adjustments to reconcile net loss to net cash used in operating activities:    
Goodwill impairment loss   1,452,338
Intangible asset impairment loss 3,500,000 2,366,000
Depreciation and amortization 2,115,015 607,667
Amortization of intangible asset 1,030,625  
Noncash lease expense 116,583 83,809
Noncash interest expense   21,970
Stock-based compensation 4,085,737 6,168,981
Change in fair value of common stock warrants (11,020) (22,758)
Change in fair value of contingent consideration (3,452,015) 430,000
Unrealized (gain) loss on investments 1,701,443 842,538
Deferred tax liability 3,288,937 145,974
Increase (decrease) in cash arising from changes in assets and liabilities, net of acquisitions:    
Accounts receivable (15,967) 110,111
Prepaid expenses and other current assets 58,656 (1,060,915)
Grant receivable (206,163) (1,318,359)
Contract receivables 24,526,231  
Inventory 5,844,000  
Income tax receivable 443,968  
Right-of-use assets (12,158,238)  
Other assets 12,233,529 (12,193,540)
Deposits (64,560) (83,122)
Accounts payable 3,299,326 (126,937)
Deferred revenue 1,583,308 (806,217)
Accrued expenses and other liabilities (3,126,158) 929,023
Other long-term liabilities (53,530) 17,286
Net Cash (Used In) Provided by Operating Activities (5,700,364) (38,128,906)
Cash Flows from Investing Activities    
Purchase of short-term investments (2,457,348) (66,960,279)
Sale of short-term investments 53,243,519 78,635,257
Purchases of property and equipment (20,117,998) (1,904,713)
Disposal of property and equipment 388,103  
Acquisition of Elusys Therapeutics, net of cash paid 2,719,899  
Payment of contingent consideration (22,784,571)  
Net Cash Provided By Investing Activities 10,991,604 9,770,265
Cash Flows from Financing Activities    
Proceeds from the issuance of common stock 59,692 26,304,282
Proceeds from the exercise of stock options   27,261
Stock issuance costs   (658,184)
Repayments of principal under finance lease (231,633) (183,010)
Payment of contingent consideration (4,735,000)  
Net Cash Used In Financing Activities (4,906,941) 25,490,349
Effect of exchange rate changes on cash and cash equivalents (3,624) (9,719)
Net (Decrease) Increase in Cash and Cash Equivalents 380,675 (2,878,011)
Cash and Cash Equivalents - Beginning of the Period 8,053,879 10,931,890
Cash and Cash Equivalents - End of the Period 8,434,554 8,053,879
Supplemental Disclosure for Cash Flow Information:    
Right-of-use assets obtained upon operating lease commencements 6,348,346 88,596
Right-of-use assets obtained upon financing lease commencements 15,477,515 408,677
Right-of-use assets surrendered upon financing lease modifications 37,654  
Right-of-use assets obtained upon operating lease modifications (81,752) 37,767
Supplemental disclosure of non-cash investing and financing activities:    
Purchases of property and equipment included in accounts payable 288,807  
Contingent and deferred cash consideration related to Elusys acquisition 42,853,685  
Reconciliation of cash and cash equivalents at December 31, 2022 and 2021    
Cash and cash equivalents included in current assets of discontinued operations 5,242,840  
Cash and cash equivalents of continuing operations 3,191,714  
Total cash and cash equivalents $ 8,434,554 $ 8,053,879