Ronald Keller

About Ronald Keller

Ron Keller has been in E&S property and casualty underwriting since 1998. Mr. Keller started his career with an exclusive Lloyds Correspondent in Chicago. A few years later, the company was acquired by Advanced E&S Group, and Mr. Keller ran the Chicago office and region for various Lloyds and Domestic binding authorities. Some of those were exclusive to Mr. Keller and his Chicago office. He was one of three wholesale brokers appointed in the Midwest region on one notable facility.After 15 years at Advanced, RSC/One80 acquired the company, and Mr. Keller continued to manage various binding authorities and lead the Midwest and West Regions for that business. In 2021, Mr. Keller moved to the carrier side due to the hardened market. He held underwriting positions at IFG Companies (Burlington Insurance Company) and Ascot Group U.S.(Ascot Specialty Insurance Company). He also recently lead the Underwriting & Operations team as director at Tokio Marine HCC - Casualty Group.Mr. Keller is currently AVP, Middle Market Excess Casualty at Ategrity Specialty Insurance Company. He is responsible for underwriting oversight & production for the brokerage casualty segment.Ronald O. Keller has the following designations from The Institutes & IRMI, respectively: Associate in Commercial Underwriting-Management (AU-M), Associate in Surplus Line Insurance (ASLI), Associate in Insurance Services (AIS), Associate in General Insurance (AINS), Accredited Customer Service Representative-Commercial (ACSRC), Construction Risk Insurance Specialist (CRIS), Manufacturing Risk Insurance Specialist (MRIS), Transportation Risk Insurance Professional (TRIP). Mr. Keller has also received certifications from WSIA for their Marcus Payne Advanced E&S Program and Consultative Selling & Negotiations Program. Mr. Keller is also a member of the WSIA Education Committee and a facilitator for WSIA’s Underwriting Boot Camp and WSIA University.In 2025, Insurance Business America Magazine selected Mr. Keller as one of the Hot 100 Leading Insurance Professionals. Mr. Keller lives in Columbus, Ohio.

Experience

1. AVP, Middle Market Excess Casualty

   Ategrity Specialty Insurance Company

   Jan 2026 — Present · Columbus, OH, US

Education

• Evergreen Park Community High School

  High School Diploma, General Studies

• The Institutes

  ACSRC, AINS, AIS, ASLI, AU, AU-M designations achieved, Insurance, Commercial Lines

Skills

• Property & Casualty Insurance
• Underwriting
• Commercial Insurance
• Employment Practices Liability
• Casualty
• Liability
• Insurance
• Legal Liability
• General Insurance
• Umbrella Insurance
• Brokers
• Commercial Lines
• Professional Liability
• Reinsurance
• Marketing
• Casualty Insurance
• Management
• Working with Brokers
• Microsoft Office
• Aim
• Client Relations
• Client Development
• Independent Thinking
• Team Coordination