Sean Tsui, CAWC, CRIS

Sean Tsui


Sean Tsui, CAWC, CRIS, is President and a founding principal owner of CoreMark Insurance Services, Inc. Sean’s primary focus is managing the production staff at CoreMark while maintaining his current client base. He specializes in all lines of commercial insurance including, workers’ compensation, general liability, and commercial auto. Sean received his bachelor of science degree in business with a concentration in marketing from California State University in Sacramento.

Over the last 14 years, Sean has been instrumental in building and growing various insurance programs within the agency including the landscape, aging services, and the retail industry. His strategic approach in building these programs emphasizes competitive rates through insurance company relationships, broad coverage, loss control awareness, and aggressive claims management.

Sean is committed to building strong relationships and has developed a full-service team to address all the insurance needs of his clients. His motto is, “My clients are not numbers or files and I earn their satisfaction, person by person. I realize that every client’s insurance requirements are unique. My clients can be certain that their coverage is carefully tailored and customized to their specific needs.”

Sean is a member of IIABC, an insurance industry trade organization along with various other industry trade organizations. He spends his personal time with his wife and three children, and is an active member in the Catholic church.


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President & Founding Principal Partner
Commercial Lines Insurance Broker


4430 Duckhorn Dr.
Sacramento, CA 95834

Office: 866-340-2247
Direct: 916-286-0922
Fax: 916-923-2797

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