| 
            The Capital Group Companies, Inc.
           | 
          
            James F Rothenberg, Robert W Lovelace, Timothy D Armour, Donald Darby O’Neal
           | 
        
        
          | 
            Capital Group Management Committee
           | 
          
            James F Rothenberg, Robert W Lovelace, Timothy D Armour
           | 
        
        
          | 
            Investment Co Of The Americas Nv
           | 
          
            Donald Darby O’Neal, Joyce E Gordon
           | 
        
        
          | 
            The Growth Fund of America Inc.
           | 
          
            James F Rothenberg, Donald Darby O’Neal
           | 
        
        
          | 
            Smith College
           | 
          
            Janet McKinley
           | 
        
        
          | 
            American Enterprise Institute
           | 
          
            Paul G. Haaga, Jr.
           | 
        
        
          | 
            RAND Corporation
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            Hoover Institution
           | 
          
            Paul G. Haaga, Jr.
           | 
        
        
          | 
            Harvard Management Company, Inc.
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            Westridge School
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            KCET
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            Occidental College
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            National Association of Securities Dealers
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            Teach for America
           | 
          
            Gregory Westin Wendt
           | 
        
        
          | 
            Committee on Capital Markets Regulation
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            California Community Foundation
           | 
          
            Robert W Lovelace
           | 
        
        
          | 
            Investment Company Institute
           | 
          
            James F Rothenberg
           | 
        
        
          | 
            National Public Radio
           | 
          
            Paul G. Haaga, Jr.
           | 
        
        
          | 
            Oxfam America
           | 
          
            Janet McKinley
           | 
        
        
          | 
            Capital World Investors
           | 
          
            Robert W Lovelace
           |