v3.26.1
Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Dec. 31, 2024
Cash flows from operating activities        
Net loss $ (4,351) $ (4,998) $ (23,756) $ (20,795)
Adjustments to reconcile net loss to net cash used in operating activities:        
Depreciation 73 61 302 173
Interest expense and amortization of debt discount on Term Loans (related party) 495 1,590 816
Stock-based compensation for services 44 88
Amortization of prepaid insurance 227 247 964 1,047
Stock-based compensation 239 160 657 562
Loss on offering and change in fair value of private warrant liability (2,005) 494
Change in fair value of publicly traded warrant liability 390 (194) (111) 330
Change in fair value of forward purchase agreement warrant liability 13 (421) (534) (411)
Change in fair value of forward purchase agreement put option liability     (103)
Change in fair value of forward purchase agreement warrant liability due to extension     24 881
Net change in operating lease right-of-use assets and liability (related party)     206 113
Net change in operating lease (related party) 55 26    
Change in inventory reserve 12 (23) 36 76
Changes in operating assets and liabilities:        
Accounts receivable, net 3 (4) 4 32
Other receivable 2 757 761 (604)
Inventories 44 74 126 (380)
Prepaid expenses and other current assets (121) (75) (8) 9
Accounts payable (1,220) 10 1,385 (19)
Operating lease liability (related party) (52) (22) (239) (145)
Accrued expenses 664 199 839 (241)
Product warranty liability (78) (17) (161) (181)
Other liability     (868) 891
Net cash used in operating activities (6,061) (3,725) (18,201) (17,949)
Cash flows from investing activities        
Purchases of property and equipment (6) (179) (980)
Net cash used in investing activities (6) (179) (980)
Cash flows from financing activities        
Payments on insurance financing loans (208) (233) (827) (916)
Proceeds from the issuance of Term Loans (related party) 5,000 10,000 20,000
Dividends paid to stockholders of Series A Preferred Stock (1,213) (1,819) (2,447)
Payment made for extinguishment of Term Loans (related party)     (100)
Proceeds from the issuance of Class A Common Stock, Issued Pre-Funded Warrants, and Series A Warrants 29,997 414
Proceeds from issuance of Class A Common Stock under employee stock purchase plan     184 63
Proceeds from exercise of forward purchase agreement warrants     3,111 1,815
Proceeds from the issuance of Class A Common Stock and Investor Warrants from registered direct offering     6,500
Offering costs from the issuance of Class A Common Stock, Issued Pre-Funded Warrants, and Series A Warrants (2,215) (768)  
Deferred offering costs     (62)
Proceeds from the issuance of Class A Common Stock associated with forward purchase agreement, net of transaction costs     1,683
Net cash provided by financing activities 27,574 3,554 16,633 20,198
Effect of exchange rate changes on cash (1) 6 3 (5)
Net (decrease) increase in cash 21,512 (171) (1,744) 1,264
Cash, beginning of period 3,739 5,483 5,483 4,219
Cash, end of period 25,251 5,312 3,739 5,483
Supplemental disclosures of cash flow information:        
Cash paid for interest 11 13 36 41
Non-cash investing and financing activities:        
Accrued and unpaid dividends on Series A Preferred Stock 1,350 25 3,087 3,074
Financing of prepaid insurance 69 75 772 843
Issuance of Term Loan Warrants (related party) 688 1,570 1,397
Accrued interest capitalized into term loans payable (related party)     800
Modification of forward purchase agreement warrant     62 94
Lease liabilities arising from obtaining right-of-use assets     121 528
Extinguishment of excess warrant liability upon exercise of forward purchase agreement warrant     96
Waiver of accrued dividends associated with Sponsor Support Agreement     3,733
Deemed dividend on waiver of restriction on Class A Common Stock     495
Induced conversion of Series A Preferred Stock to Class A Common Stock     1,162
Property and equipment purchased on account     117
Modification of Term Loan Warrants (related party)     1,455
Deemed capital contribution associated with the extinguishment of Term Loans (related party)     27,883
Issuance of Placement Agent Warrants $ 678 $ 391