Randy Thornton

National Advisory Board

Randolph I. Thornton is non-executive Chairman and a member of the board of both Core-Mark International and National Energy & Gas Transmission. He served as
Managing Director and a Senior Credit Officer at Citigroup where he worked for 34 years, 20 of which were as a senior executive of its corporate restructuring practice. Mr.
Thornton graduated from Lafayette College in 1967 with a B.A. in History and earned an MBA in Finance at Columbia Business School in 1971. He previously served in Vietnam as a US Army 1st Lieutenant receiving two bronze stars with the 9th Infantry Division.