Aaron Diefenthaler – Biography
Last update: April 2, 2026Executive profile
Aaron was Principal, Portfolio Manager at Dauch, and Business Development and Software Consulting at SS&C Technologies. Aaron Diefenthaler joined RLI in 2012. Aaron served as Vice President, Chief Investment Officer and Treasurer at RLI.
Aaron Diefenthaler is currentlyChief Financial Officer at RLI - View - RLI org chart
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Education
Aaron Diefenthaler has a Master of Business Administration in Finance from DePaul University - Charles H. Kellstadt Graduate School of Business and an Executive Education degree from University of Chicago - Booth School of Business.
They have also studied at DePaul University - Charles H. Kellstadt Graduate School of Business :
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They have also studied at University of Chicago - Booth School of Business :
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- At RLI, Aaron Diefenthaler has 52 colleagues including Craig Kliethermes (CEO), Robert Restrepo (Director)…
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- In the Insurance industry, Aaron Diefenthaler has 69,215 colleagues in 3,978 companies located in 106 countries. 20,957 executive movements have been recorded in the last 12 months. Learn more about Insurance.
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