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Note 4 - Prepaid Expenses and Other Current Assets
3 Months Ended
Mar. 31, 2024
Notes to Financial Statements  
Prepaid Expenses and Other Current Assets [Text Block]

Note 4. Prepaid Expenses and Other Current Assets

 

Prepaid expenses and other current assets as of March 31, 2024 and December 31, 2023 were as follows:

 

   

March 31,

   

December 31,

 

(in thousands)

 

2024

   

2023

 

Metals to be used in research and development

  $ 1,826     $ 1,909  

Research and development tax credits receivable

    1,442       1,195  

Other

    832       568  

Total prepaid expenses and other current assets

  $ 4,100     $ 3,672