Press Release

Summit Announces the Promotion of Darin Grimm to Senior Vice President of Claims

LAKELAND, Fla. – May 2, 2023 – Summit Consulting LLC (“Summit”), a leading provider of workers’ compensation insurance coverage in the southern United States, announced today the promotion of Robert (Darin) Grimm, DBA, to senior vice president of Claims.

Dr. Grimm joined Summit as an underwriter in 2003. Since then, he has held roles of increased responsibility in several departments including Sales, Marketing and Claims, most recently serving as vice president of medical claims. “I am extremely pleased to announce that Darin is assuming responsibility for this important part of the organization,” says Carol Sipe, Summit’s president and CEO. “Darin’s broad experience has prepared him well for this new role.”

Dr. Grimm succeeds Bob O’Halloran, who will retire on May 5, having served as senior vice president of Claims since 1999. Mr. O’Halloran spent more than 30 years in the insurance claims field and was inducted into the Florida Workers' Compensation Hall of Fame in 2012. Ms. Sipe shares, “Bob’s influence is evident in every aspect of our claims operation. Beyond technical expertise, I believe Bob’s most lasting impact comes from how he views and treats the injured workers we serve. His influence extends well beyond Summit to the entire industry.”

Dr. Grimm earned a Bachelor of Arts in business and professional leadership from Southeastern University, a Master of Business Administration from Saint Leo University and a Doctor of Business Administration from University of South Florida’s Muma College of Business.

About Summit Consulting LLC (“Summit”)

Based in Lakeland, Florida, Summit is a leading provider of workers’ compensation insurance coverage in the southern United States and is a member of Great American Insurance Group. Summit manages the day-to-day operations of five workers’ compensation insurance companies that include its two affiliates, Bridgefield Employers Insurance Company and Bridgefield Casualty Insurance Company, and three non-affiliates, BusinessFirst Insurance Company, RetailFirst Insurance Company and Retailers Casualty Insurance Company. Summit provides its comprehensive workers’ compensation insurance services to businesses in Alabama, Arkansas, Florida, Georgia, Indiana, Kentucky, Louisiana, Mississippi, North Carolina, Oklahoma, South Carolina, Tennessee, Texas and Virginia. Summit has offices in Lakeland, Florida, Baton Rouge, Louisiana, and Gainesville, Georgia. For more information, visit

About Great American Insurance Group

Great American Insurance Group’s roots go back to 1872 with the founding of its flagship company, Great American Insurance Company. Based in Cincinnati, Ohio, the operations of Great American Insurance Group are engaged primarily in property and casualty insurance, focusing on specialized commercial products for businesses. Great American Insurance Company has received an “A” (Excellent) or higher rating from the A.M. Best Company for more than 115 years and is currently rated “A+” (Superior). The members of Great American Insurance Group are subsidiaries of American Financial Group, Inc. (AFG), also based in Cincinnati, Ohio. AFG’s common stock is listed and traded on the New York Stock Exchange under the symbol AFG.


Summit Contact:
Carol Sipe
President and CEO
Summit Consulting, LLC
Great American Insurance Group Media Contact:
Diane P. Weidner, IRC
Vice President, Investor & Media Relations
American Financial Group


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