- 
        Signature
      
- 
        /s/JOEL S HATLEN, POA
      
      
- 
        Stock symbol
      
- 
        DAIO
      
      
- 
        Transactions as of
      
- 
        Oct 1, 2021
      
      
- 
        Transactions value $
      
- 
        -$49,882
      
      
- 
        Form type
      
- 
        4
      
      
- 
        Date filed
      
- 
        10/4/2021, 05:55 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | DAIO | common stock | Sale | -$17.3K | -2.7K | -0.68% | $6.42 | 394K | Oct 1, 2021 | Direct | F1 | 
          
            | transaction | DAIO | common stock | Sale | -$32.6K | -5.21K | -1.32% | $6.24 | 389K | Oct 4, 2021 | Direct | F1 | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  10b5-1 plan open market stock sale