- 
        Signature
      
- 
        /s/ Lewis H Titterton
      
      
- 
        Stock symbol
      
- 
        PRKR
      
      
- 
        Transactions as of
      
- 
        Feb 1, 2024
      
      
- 
        Transactions value $
      
- 
        $55,000
      
      
- 
        Form type
      
- 
        4
      
      
- 
        Date filed
      
- 
        2/5/2024, 05:04 PM
      
 
     
   
 
  
    Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes | 
      
      
          
            | transaction | PRKR | Option to Purchase Common Stock | Award | $55K | +275K |  | $0.20 | 275K | Feb 1, 2024 | Common Stock | 275K | $0.20 | Direct | F1 | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  Option represents new director equity compensation package.