Tim Keller

Tim Keller is an accomplished professional with extensive leadership experience in security and investigations. Currently serving as President of American Security & Investigations since April 2025, Keller also holds the position of President for the Distribution Services Division at Marsden Services since July 2022. Previous roles include Vice President at Marsden Services, Adjunct Instructor in Criminal Justice at Benedictine University, and various executive positions within Securitas Security Services USA, Inc., including President of the Northeast Region and Mobile Guarding Division. Keller's leadership experience extends to serving as Chairman of the DuPage County Workforce Board and as an Intelligence Officer in the US Navy Reserve. Educational qualifications include a Bachelor of Criminal Justice from Louisiana State University, a Master’s in Business and Organizational Security Management from Webster University, and a Graduate Certificate in Command and Staff Program from the U.S. Naval War College.