RLI Corp. announced that Chief Financial Officer Todd Bryant will retire on Dec. 31, 2025, following more than 30 years with the company.

Bryant joined RLI in 1993 and has served as CFO since 2019. During his tenure, he held several leadership roles in Accounting and Finance, including VP, Finance & Controller.

Aaron Diefenthaler, currently Chief Investment Officer & Treasurer, has been appointed to succeed Bryant as CFO, effective Jan. 1, 2026.

Bryant will remain in an advisory role through mid-year 2026 to support the transition of responsibilities.

Diefenthaler joined RLI in 2012 as Vice President and CIO and was named Treasurer in 2014. Prior to joining RLI, he held leadership roles at Asset Allocation and Management LLC, SS&C Technologies and Northern Trust. He holds a bachelor’s degree in Finance from Indiana University and an MBA from DePaul University’s Kellstadt Graduate School of Business. He also holds the Chartered Financial Analyst (CFA) designation.

RLI said the appointment underscores the company’s commitment to strong financial stewardship and proactive succession planning.

***

Markel Insurance, the insurance operation within Markel Group Inc., announced the appointment of Rohan Davies as Managing Director of its newly created London Market business, subject to regulatory approval.

The appointment follows last month’s announcement that Markel International will move from two divisions – Wholesale and National Markets – to five distinct businesses which include Asia-Pacific, Canada, Europe, London Market and UK. The new structure better reflects the scale the business has achieved and position it for the next phase of growth.

In his new role, Davies will oversee close to 350 employees across teams spanning the new London Market business’s three cores product areas—Marine & Energy, PFR & Cyber, and Specialty—located in London, with an additional three teams based in the U.S. He will be responsible for setting the strategic direction of the London Market business, with a focus on maximizing profitable growth and delivering exceptional service to clients and brokers.

Davies brings more than 20 years of experience in the specialty insurance market, with a career that spans senior leadership and underwriting roles across marine and energy. He joined Markel International as an Energy Underwriter in 2008, based in Singapore, eventually going on to become Managing Director – Marine and Energy, in 2022. In that role, he’s helped to reshape Markel International’s marine and energy underwriting strategy, helping to drive operational excellence and deliver consistent profitability.

Davies began his insurance career in broking, after joining Heath Lambert in 2003. He later undertook underwriting roles at Liberty International Underwriters and Navigators Insurance Company, before joining Markel in January 2008.

In his new role, Davies will be based in London and report to Andrew McMellin, President of Markel International.