Sullivan Interests


A Family of Companies


While Sullivan Interests' portfolio companies are based along the Texas Gulf Coast, additional locations in New York, South Carolina, and Louisiana offer the capability to engage in both domestic and international projects.   Texas International Terminals, Ltd. offers multimodal liquid and dry bulk handling on the Galveston Ship Channel, while Callan Marine, Ltd.  provides heavy marine construction services and dredging.  SLSCO Ltd. provides comprehensive site services for disaster response and recovery, infrastructure and commercial construction and commercial landscaping. Energyguard Foam Insulators, L.P. offers spray-foam insulation services around the state of Texas.  Sullivan Brothers Builders, Ltd., is identified as one of the most reputable residential builders in Southeast Texas, showcasing Evia on Galveston Island and Harper Woods, Ltd. in Springwoods Village.

The greatest compliment a company can receive is from its clients – as a result of the diversity of Sullivan Interests' portfolio companies, our team is routinely acknowledged for their capability to respond to the needs of their customers and provide timely and cost-effective completion of their assignments/projects. Sullivan Interests was created when the Sullivan Brothers (Billy, Todd and John) started a lawn mowing and tree service to earn their college tuition.  Sullivan Interests continues to emulate that same spirit of tenacity, commitment and customer service just as the Sullivan Brothers did when they mowed their first lawn. 





Todd P. Sullivan earned a degree in Petroleum Engineering from Texas A&M University and began his career in the oil and gas industry where his primary focus was in production forecasting and reserves valuations. He left his engineering career to pursue various business interests with his brothers, which led to the diversification of Sullivan Interests, Ltd. into broad-based land development, industrial and service related companies. Todd oversees the management and operation of Texas International Terminals, Ltd.  and leverages his background in the oil and gas industry to foster business opportunities for the heavy industrial focused companies within the portfolio.




John R. Sullivan earned a degree in Construction Management from Texas A&M University and has vast experience in all aspects of the construction industry, ranging from marine construction and dredging, land development and infrastructure construction as well as the intricate completion of individual custom homes. John oversees the daily operations of Sullivan Brothers Builders, Ltd. as well as Callan Marine, Ltd.




William W. (Billy) Sullivan is responsible for the management and operation of SLSCO, Ltd. His scope of responsibility is broad and includes site development and construction.   Billy also focuses on the regulatory process and execution of disaster response and recovery projects. Billy earned a degree in Finance from Texas A&M University.