Marshall D. Isom

President & Founder


Marshall has spent over 10 years in the Houston small business community as an owner/partner. Prior to The Proverbs Group and Optimum Security Professionals, Marshall was the principle owner of Cruise Control Valet.

Before entering the contract security industry, Marshall was responsible for overseeing operations and administration of Cruise Control Valet. Under his leadership, the parking management company has served many of Houston’s top businesses and personalities such as Houston Modern Luxury Magazine, Texas Southern University and State Representative Ron Reynolds.

Prior to his business career, Marshall served as the Children’s Ministry Coordinator at a local church for 4 years. He also worked as a paraprofessional at Houston Independent School District and a behavioral specialist at Fort Bend Independent School District.

Marshall also studied education and business at Texas Southern University where he was a member of the National Scholars Honor Society and captain of the Political Science debate team 2005. He is presently pursuing a number of security and safety industry related certifications from Texas A&M Engineering Extension Service and ASIS International.

Clients do not come first. Employees come first. If you take care of your employees, they will take care of the clients. ~Richard Branson