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        Signature
      
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        /s/ Douglas Carlen on behalf of Mary Bridget Duffy
      
      
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        Stock symbol
      
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        VCRA
      
      
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        Transactions as of
      
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        Feb 18, 2022
      
      
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        Transactions value $
      
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        $0
      
      
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        Form type
      
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        4
      
      
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        Date filed
      
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        2/23/2022, 04:48 PM
      
 
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes | 
      
      
          
            | transaction | VCRA | Common Stock | Award | $0 | +54.3K | +85.52% | $0.00 | 118K | Feb 18, 2022 | Direct | F1 | 
          
            | transaction | VCRA | Common Stock | Disposed to Issuer |  | -118K | -100% |  | 0 | Feb 23, 2022 | Direct | F2 | 
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  Mary Bridget Duffy is no longer subject to Section 16 filing requirements. Form 4 or Form 5 obligations may continue.
  
    Explanation of Responses: