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Condensed Consolidated Balance Sheets - USD ($)
$ in Thousands
Jun. 30, 2024
Dec. 31, 2023
Current assets:    
Cash and cash equivalents $ 35,617 $ 22,465
Short-term investments 274,347 147,561
Accounts receivable, net 2,620 1,010
Inventory 585 381
Prepaid expenses and other current assets 7,675 5,130
Total current assets 320,844 176,547
Property and equipment, net of accumulated depreciation and amortization of $1,835 and $4,538, respectively 1,954 1,987
Goodwill 44,543 44,543
Operating lease right-of-use-assets 5,187 5,524
Other assets 828 828
Total assets 373,356 229,429
Current liabilities:    
Accounts payable 12,220 14,389
Accrued liabilities 15,656 17,157
Total current liabilities 27,876 31,546
Long-term debt, net 99,499 99,508
Other long-term liabilities 6,001 5,265
Total liabilities 133,376 136,319
Commitments and contingencies (Note 6)
Stockholders’ Equity:    
Series A Convertible preferred stock; 2,304,147 shares issued and none outstanding at June 30, 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 2,113,090 1,862,558
Accumulated deficit (1,868,665) (1,766,839)
Accumulated other comprehensive (loss) income (193) 31
Treasury stock, at cost, 1,528,008 and 867,973 shares, respectively (4,615) (2,885)
Total stockholders’ equity 239,980 93,110
Total liabilities and stockholders’ equity $ 373,356 $ 229,429