Trustmark Mutual Holding Company, Our Parent Company

What is it like to work with people who care, who listen, who go the extra mile?
For more than a century, Trustmark Mutual Holding Company, CoreSource’s parent company, has focused on helping businesses and families increase their well-being through better health and greater financial security. From humble beginnings, Trustmark's insurance subsidiaries have grown into a national, modern mutual benefits company, one that serves members—not Wall Street. Trustmark provides employers with smarter benefits that attract new employees, keep existing ones, improve productivity, lower costs, and help employees achieve greater physical, emotional, and financial well-being.

Trustmark and CoreSource do this with all employers in mind—with capabilities usually reserved for large employers, combined with the personal service you’d expect from a smaller firm.

As a modern company, we evolve continually with industry trends. We integrate technology and new approaches into our products, while also strengthening them with long-term perspective, expertise, and deep experience.

While so many companies only seem to serve themselves, our interests and our clients’ interests are aligned. When we succeed, they succeed, and when they succeed, we do.

CoreSource clients benefit from Trustmark's stability, financial strength, long-term mindset, and commitment to personal, flexible, and trusted service. Trustmark’s financial strength is rated A- (Excellent) by A.M. Best. To learn more about Trustmark and CoreSource’s sister companies, please visit Trustmark’s website.

Personal. Flexible. Trusted.

View our interactive Trustmark Timeline.