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CONDENSED BALANCE SHEETS - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Current assets:    
Cash and cash equivalents $ 5,080 $ 7,575
Short-term investments 0 994
Accounts receivable, net 361 201
Inventory 969 994
Prepaid expenses and other current assets 373 297
Total current assets 6,783 10,061
Right to use asset, operating lease 2,253 2,336
Property and equipment, net 348 410
Other noncurrent assets 36 36
Total assets 9,420 12,843
Current liabilities:    
Accounts payable 314 183
Accrued expenses 464 383
Current portion of operating lease liability 146 139
Current portion of notes payable 65 61
Deferred revenue 12 32
Total current liabilities 1,001 798
Operating lease liability, less current portion 2,257 2,332
Notes payable, less current portion 111 145
Total liabilities 3,369 3,275
Commitments and contingencies (see notes)
Stockholders’ equity:    
Preferred stock, $0.001 par value, 10,000,000 shares authorized, none issued and outstanding as of June 30, 2026 and December 31, 2025 0 0
Common stock, $0.001 par value, 100,000,000 shares authorized, 5,303,426 and 5,223,015 shares issued and outstanding as of June 30, 2026 and December 31, 2025, respectively 5 5
Additional paid-in capital 152,421 152,043
Accumulated deficit (146,375) (142,480)
Total stockholders’ equity 6,051 9,568
Total liabilities and stockholders’ equity $ 9,420 $ 12,843