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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) | Sep. 28, 2019 | Dec. 29, 2018
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 8,757,699 | $ 14,326,347
Marketable debt securities, at fair value | 17,258,504 | 22,918,016
Accounts receivable, net of allowance of $360,000 in 2019 and $304,000 in 2018 | 4,910,375 | 3,088,360
Contract assets and unbilled receivables | 1,045,939 | 3,089,663
Inventory | 3,442,490 | 4,797,238
Prepaid taxes | 601,608 | 399,611
Prepaid expenses and other current assets | 766,688 | 784,790
Total current assets | 36,783,303 | 49,404,025
Plant and equipment, net | 1,621,927 | 2,598,842
Operating lease right-of-use assets | 3,073,651 | 0
Goodwill | 0 | 331,344
Other assets | 844,049 | 1,361,375
Equity investments | 9,029,417 | 5,853,525
Total assets | 51,352,347 | 59,549,111
Current liabilities: |  |
Accounts payable | 3,018,906 | 3,921,880
Accrued payroll and expenses | 2,536,640 | 3,038,005
Accrued warranty | 645,000 | 571,000
Contract liabilities and billings in excess of revenue earned | 1,430,828 | 388,933
Other accrued liabilities | 2,961,609 | 1,901,547
Deferred tax liabilities | 507,000 | 546,000
Total current liabilities | 12,181,235 | 10,367,365
Asset retirement obligations | 245,916 | 254,098
Operating lease liabilities, net of current portion | 2,077,245 | 0
Other long-term obligations | 1,031,523 | 1,214,827
Stockholders’ equity: |  |
Preferred stock, par value $.01 per share: authorized, 3,000 shares; none issued | 0 | 0
Common stock, par value $.01 per share: authorized, 120,000,000 shares; issued 88,614,327 shares in 2019 and 80,735,320 shares in 2018; outstanding 82,053,697 shares in 2019 and 74,008,815 shares in 2018 | 865,669 | 785,220
Additional paid-in capital | 344,248,350 | 334,491,397
Treasury stock (4,513,256 shares in 2019 and 2018, at cost) | (17,238,669) | (17,238,669)
Accumulated other comprehensive income | 1,883,090 | 1,554,587
Accumulated deficit | (293,947,437) | (271,730,661)
Total Kopin Corporation stockholders’ equity | 35,811,003 | 47,861,874
Noncontrolling interest | 5,425 | (149,053)
Total stockholders’ equity | 35,816,428 | 47,712,821
Total liabilities and stockholders’ equity | 51,352,347 | 59,549,111
Operating lease liabilities—current | $ 1,081,252 | $ 0

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