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Consolidated Balance Sheets - USD ($)
$ in Thousands
Dec. 31, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 66,656 $ 22,465
Short-term investments 171,301 147,561
Accounts receivable, net 3,473 1,010
Inventory 231 381
Prepaid expenses and other current assets 4,532 5,130
Total current assets 246,193 176,547
Property and equipment, net of accumulated depreciation and amortization of $2,086 and $4,538, respectively 2,484 1,987
Goodwill 44,543 44,543
Operating lease right-of-use-assets 4,832 5,524
Other assets 368 828
Total assets 298,420 229,429
Current liabilities:    
Accounts payable 14,801 14,389
Accrued liabilities 30,447 17,157
Total current liabilities 45,248 31,546
Long-term debt, net 100,298 99,508
Other long-term liabilities 6,924 5,265
Total liabilities 152,470 136,319
Commitments and contingencies (Note 10)
Stockholders' Equity:    
Series A Convertible preferred stock; 2,304,147 shares issued and none outstanding at December 31, 2024; no shares issued or outstanding at December 31, 2023 0 0
Common stock, $0.001 par value; 450,000,000 shares authorized; 363,020,303 and 245,792,668 shares issued, respectively 363 245
Additional paid-in capital 2,117,325 1,862,558
Accumulated deficit (1,967,242) (1,766,839)
Accumulated other comprehensive income 119 31
Treasury stock, at cost, 1,528,008 and 867,973 shares, respectively (4,615) (2,885)
Total stockholders' equity 145,950 93,110
Total liabilities and stockholders’ equity $ 298,420 $ 229,429