Aaron P. Diefenthaler serves as the Chief Investment Officer & Treasurer at RLI CORP, a position he has held since joining the company in 2012. In his role, Diefenthaler is responsible for overseeing the investment portfolio and managing the company's financial strategy. His expertise in investment management and financial planning has been instrumental in driving RLI CORP's growth and stability in the competitive insurance industry. Prior to joining RLI CORP, Diefenthaler gained extensive experience in the financial sector. He began his career at Aon Corporation, where he worked as an investment analyst, honing his skills in portfolio management and risk assessment. Later, he joined Allstate Investments, LLC, where he served as a Senior Investment Analyst, further developing his expertise in asset allocation and investment strategy. Diefenthaler's strong background in finance and investments has been a key factor in his success at RLI CORP. Under Diefenthaler's leadership, RLI CORP has seen significant growth in its investment portfolio, with a focus on diversification and long-term stability. His strategic approach to financial management has helped the company navigate market fluctuations and maintain a strong financial position. Diefenthaler's dedication to excellence and his ability to adapt to changing market conditions have made him a valuable asset to RLI CORP and a respected figure in the insurance industry.