Trustmark Insurance Company is a provider of life insurance benefits and services to groups and individuals. It is a part of Trustmark Companies, which is a full-service insurance company. Operational for more than 95 years, Trustmark Companies offers a variety of life, medical, dental, managed care, disability, critical illness and accidental insurances. The company operates several subsidiaries, such as CoreSource, Trustmark Group Benefits, Starmark, Trustmark Affinity Markets and Trustmark Voluntary Benefit Solutions. The Trustmark Companies serves employers and affinity groups, brokers and individuals through a variety of health insurance plans. The Trustmark Companies also provides critical illness and benefit administration services to groups and individuals.