Mark Liddle is an experienced professional in the construction and building materials distribution industry. Currently serving as the Director of National Accounts at US LBM since March 2025, Liddle oversees a national distribution network that caters to homebuilders and specialty contractors. Prior to this role, Liddle was with White Cap as the Director of Sales & Strategic Accounts from September 2006 to August 2024, contributing significantly to sales strategies for a major construction distributor. Liddle's earlier career includes various managerial positions at Fastenal from 1995 to 2006, demonstrating a strong background in sales and account management. Liddle holds a Bachelor of Science degree in Business with a major in Marketing from SUNY at Buffalo.