- 
        Signature
      
 
      - 
        /s/ Tyler H. Rose, as attorney-in-fact for Justin William Smart
      
 
    
    
      
- 
        Stock symbol
      
 
      - 
        KRC
      
 
    
    
      
- 
        Transactions as of
      
 
      - 
        Jan 28, 2022
      
 
    
    
      
- 
        Transactions value $
      
 
      - 
        -$804,770
      
 
    
    
      
- 
        Form type
      
 
      - 
        4
      
 
    
    
      
- 
        Date filed
      
 
      - 
        2/1/2022, 05:43 PM
      
 
    
    
    
    
   
     
   
 
  
    Transactions Table
  
  
    
      
        
          | Type | 
          Sym | 
          Class | 
          Transaction | 
          Value $ | 
          Shares | 
          Change % | 
          * Price $ | 
          Shares After | 
          Date | 
          Ownership | 
          Footnotes | 
        
      
      
          
            | transaction | 
            KRC | 
            Common stock, par value $0.01 per share | 
            Award | 
            $0 | 
            +7.53K | 
            +4.91% | 
            $0.00 | 
            161K | 
            Jan 28, 2022 | 
            Direct | 
            F1 | 
          
          
            | transaction | 
            KRC | 
            Common stock, par value $0.01 per share | 
            Options Exercise | 
            $0 | 
            +27.3K | 
            +16.96% | 
            $0.00 | 
            188K | 
            Jan 28, 2022 | 
            Direct | 
             | 
          
          
            | transaction | 
            KRC | 
            Common stock, par value $0.01 per share | 
            Tax liability | 
            -$805K | 
            -12.8K | 
            -6.77% | 
            $63.05 | 
            176K | 
            Jan 31, 2022 | 
            Direct | 
            F2 | 
          
      
    
   
  
    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 | 
            KRC | 
            Restricted Stock Units | 
            Award | 
            $0 | 
            +11.7K | 
            +46.02% | 
            $0.00 | 
            37.2K | 
            Jan 28, 2022 | 
            Common Stock | 
            11.7K | 
             | 
            Direct | 
            F3, F4 | 
          
          
            | transaction | 
            KRC | 
            Restricted Stock Units | 
            Award | 
            $0 | 
            +19K | 
            +51.19% | 
            $0.00 | 
            56.2K | 
            Jan 28, 2022 | 
            Common Stock | 
            19K | 
             | 
            Direct | 
            F3, F5 | 
          
          
            | transaction | 
            KRC | 
            Restricted Stock Units | 
            Options Exercise | 
            $0 | 
            -27.3K | 
            -48.64% | 
            $0.00 | 
            28.9K | 
            Jan 28, 2022 | 
            Common Stock | 
            27.3K | 
             | 
            Direct | 
            F3, F6 | 
          
      
    
   
  
    * An asterisk sign (*) next to the price indicates that the price is likely invalid.
  
  
    Explanation of Responses:
  
  
  
    Remarks:
  
  Executive Vice President, Development and Construction Services