| 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC. COMMON STOCK
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Thomas H. Kean Jr
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Jul 16, 2025
                  
                 | 
                
                  
                      Jun 23, 2025
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Thomas H. Kean
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Apr 13, 2023
                  
                 | 
                
                  
                      Mar 16, 2023
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Susie Lee
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Dec 29, 2022
                  
                 | 
                
                  
                      Nov 30, 2022
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Susie Lee
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Mar 11, 2021
                  
                 | 
                
                  
                      Feb 09, 2021
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Susie Lee
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Feb 10, 2021
                  
                 | 
                
                  
                      Jan 07, 2021
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Susie Lee
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Jan 11, 2021
                  
                 | 
                
                  
                      Dec 11, 2020
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Greg Gianforte
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Jul 01, 2020
                  
                 | 
                
                  
                      Jun 23, 2020
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC. CMNÍ
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Ro Khanna
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Apr 20, 2020
                  
                 | 
                
                  
                      N/A
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC. CMN
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Ro Khanna
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    May 13, 2020
                  
                 | 
                
                  
                      Apr 07, 2020
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Greg Gianforte
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Apr 14, 2020
                  
                 | 
                
                  
                      Mar 23, 2020
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC. CMN
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Ro Khanna
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Mar 09, 2020
                  
                 | 
                
                  
                      Feb 11, 2020
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $100,001 - $250,000
                    
                  
                 | 
                
                  
                    
                        Greg Gianforte
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Nov 27, 2019
                  
                 | 
                
                  
                      Oct 11, 2019
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $100,001 - $250,000
                    
                  
                 | 
                
                  
                    
                        Greg Gianforte
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Oct 20, 2019
                  
                 | 
                
                  
                      Sep 10, 2019
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        David B. Mckinley
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Jan 09, 2019
                  
                 | 
                
                  
                      Dec 17, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $100,001 - $250,000
                    
                  
                 | 
                
                  
                    
                        Greg Gianforte
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Dec 11, 2018
                  
                 | 
                
                  
                      Nov 19, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC. CMN
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Ro Khanna
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    May 10, 2018
                  
                 | 
                
                  
                      Apr 03, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International, Inc.
                      
                      
                        Stock
                      
                    
                 | 
                
                  
                    
                      
                        Sale (Full)
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Cochran, Thad
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Apr 02, 2018
                  
                 | 
                
                  
                      Mar 20, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International, Inc.
                      
                      
                        Stock
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Cochran, Thad
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Apr 02, 2018
                  
                 | 
                
                  
                      Mar 02, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International, Inc.
                      
                      
                        Stock
                      
                    
                 | 
                
                  
                    
                      
                        Sale (Partial)
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Cochran, Thad
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Feb 07, 2018
                  
                 | 
                
                  
                      Jan 24, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL, INC.
                      
                      
                        ST
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $100,001 - $250,000
                    
                  
                 | 
                
                  
                    
                        Greg Gianforte
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Mar 06, 2019
                  
                 | 
                
                  
                      Jan 23, 2018
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC. CMN
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Ro Khanna
                    
                    
                      House / D
                    
                  
                 | 
                
                  
                    Dec 12, 2017
                  
                 | 
                
                  
                      Nov 30, 2017
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International, Inc.
                      
                      
                        Stock
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Cochran, Thad
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Nov 15, 2017
                  
                 | 
                
                  
                      Oct 17, 2017
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International Inc. (NYSE)
                      
                      
                        Stock
                      
                    
                 | 
                
                  
                    
                      
                        Sale (Full)
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Cochran, Thad
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Mar 09, 2015
                  
                 | 
                
                  
                      Feb 13, 2015
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International Inc. (NYSE)
                      
                      
                        Stock
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Cochran, Thad
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Jan 13, 2015
                  
                 | 
                
                  
                      Dec 18, 2014
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Michael T. McCaul
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Nov 14, 2014
                  
                 | 
                
                  
                      Oct 17, 2014
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $50,001 - $100,000
                    
                  
                 | 
                
                  
                    
                        Michael T. McCaul
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Oct 16, 2014
                  
                 | 
                
                  
                      N/A
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $50,001 - $100,000
                    
                  
                 | 
                
                  
                    
                        Michael T. McCaul
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Oct 16, 2014
                  
                 | 
                
                  
                      N/A
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Sale
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Michael T. McCaul
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Aug 19, 2014
                  
                 | 
                
                  
                      N/A
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International Inc. (NYSE)
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Sale (Full)
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Jr, Robert P Corker
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Jun 10, 2014
                  
                 | 
                
                  
                      May 20, 2014
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $15,001 - $50,000
                    
                  
                 | 
                
                  
                    
                        Michael T. McCaul
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Mar 13, 2014
                  
                 | 
                
                  
                      Feb 07, 2014
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO INTERNATIONAL INC
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Michael T. McCaul
                    
                    
                      House / R
                    
                  
                 | 
                
                  
                    Mar 13, 2014
                  
                 | 
                
                  
                      Feb 07, 2014
                  
                 | 
                
                  
                    
                       - 
                    
                   | 
                
              
            
              
                | 
                    
                      
                        
                          WCC
                        
                      
                      
                        WESCO International Inc. (NYSE)
                      
                      
                        None
                      
                    
                 | 
                
                  
                    
                      
                        Purchase
                      
                    
                    
                      $1,001 - $15,000
                    
                  
                 | 
                
                  
                    
                        Jr, Robert P Corker
                    
                    
                      Senate / R
                    
                  
                 | 
                
                  
                    Jun 10, 2014
                  
                 | 
                
                  
                      Jan 08, 2014
                  
                 | 
                
                  
                    
                       - 
                    
                   |