v3.26.1
Condensed Consolidated Balance Sheets - USD ($)
Jun. 27, 2026
Dec. 27, 2025
Current assets:    
Cash and cash equivalents $ 24,876,516 $ 36,350,083
Restricted cash and cash equivalents 25,402,253 25,277,063
Accounts receivable, net of allowance of $19,300 and $19,000 at June 27, 2026 and December 27, 2025, respectively 10,729,034 10,726,776
Contract assets 4,946,766 6,032,913
Grant income receivable 401,614
Inventory 4,725,211 5,505,775
Other receivable, at fair value 4,506,735 5,057,974
Prepaid expenses and other current assets 3,698,141 2,855,383
Total current assets 79,286,270 91,805,967
Property, plant and equipment, net 7,297,509 2,616,803
Operating lease right-of-use assets 1,168,260 1,488,231
Other assets 123,822 123,822
Equity method investment, at fair value 8,100,000 8,900,000
Equity investments 10,284,102 3,459,434
Total assets 106,259,963 108,394,257
Current liabilities:    
Accounts payable 4,846,252 5,315,998
Accrued payroll and expenses 3,268,744 2,231,848
Accrued warranty 52,000 1,165,000
Contract liabilities 6,955,245 1,168,009
Deferred grant income 2,688,627
Operating lease liabilities 674,490 648,469
Accrued post-retirement benefits 40,000 40,000
Other accrued liabilities 851,623 607,915
Deferred tax liabilities 422,458
Accrued litigation damages 19,700,000 19,700,000
Total current liabilities 36,388,354 33,988,324
Non-current contract liabilities, and asset retirement obligations 1,780 3,675
Operating lease liabilities, net of current portion 488,106 831,507
Accrued post-retirement benefits, net of current portion 170,504 190,696
Other long-term liabilities, net of current portion 1,706,411
Total liabilities 37,048,744 36,720,613
Commitments and contingencies (Note 16) and Litigation (Note 17)  
Stockholders’ equity:    
Common stock, par value $0.01; 275,000,000 shares authorized as of June 27, 2026 and December 27, 2025, 186,974,903 issued as of June 27, 2026 and 183,015,207 issued as of December 27, 2025, and 180,618,566 outstanding at June 27, 2026 and 176,903,857 at December 27, 2025 1,817,208 1,776,753
Additional paid-in capital 472,196,314 463,150,835
Treasury stock 1,102,289 shares at June 27, 2026 and 771,500 shares at December 27, 2025, at cost (2,459,886) (1,389,174)
Accumulated deficit (402,342,417) (399,421,251)
Total stockholders’ equity 69,211,219 64,117,163
Total liabilities, redeemable convertible preferred stock, and stockholders’ equity 106,259,963 108,394,257
Series A Redeemable Convertible Preferred Stock [Member]    
Current liabilities:    
Series A redeemable convertible preferred stock, par value $0.01, stated value $7,000 per share; 3,000 shares authorized, no shares issued and outstanding as of June 27, 2026 and 1,000 shares issued and outstanding at December 27, 2025; aggregate liquidation preference of $7,000,000 as of December 27, 2025 $ 7,556,481