Mark Loughridge (born December 19, 1953, in Leadville, CO) was IBM's Senior Vice President and Chief Financial Officer, Finance and Enterprise Transformation. He stands as IBM's longest-tenured CFO after nearly 10 years in the role.He joined the company in 1977, where he started as a development engineer in the Office Products Division in Lexington, KY. He was also financial services manager for IBM's lab in Hursley, England.