Aaron Diefenthaler

Aaron Diefenthaler

Director of Finance/CFO at RLI CORP.

Net worth: 5 M $ as of 2026-08-30

52 year
Finance
Consumer Services

Profile

Mr. Aaron P. Diefenthaler, CFA MBA, is a Treasurer, Chief Investment Officer & Vice President at RLI Corp., a Vice President, Chief Investment Officer & Treasurer at RLI Insurance Co., a Chief Investment Officer & Vice President at Clear Blue Insurance Co., a Chief Investment Officer & Vice President at Contractors Bonding & Insurance Co., a Chief Investment Officer & Vice President at Mt. Hawley Insurance Co. and a Chief Investment Officer & Vice President at RLI Insurance Co. He is responsible for leading RLI’s investment and asset allocation strategy, capital management, investor relations and corporate development functions, as well as RLI’s Mortgage Reinsurance product. He joined RLI in 2012 with 16 years of investment and operations experience. Prior to joining RLI, he served as principal and portfolio manager for AAM Insurance Investment Management where he managed investment portfolios for numerous insurance companies. He has a bachelor’s degree in finance from Indiana University and a MBA from DePaul University’s Kellstadt Graduate School of Business and holds the CFA designation.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
2026-05-13 74,937 ( 0.08% ) 5 M $ 2026-08-30

Aaron Diefenthaler active positions

CompaniesPositionStart
RLI CORP. Director of Finance/CFO 2025-12-31
Chief Investment Officer -
Chief Investment Officer -
Chief Investment Officer -
Chief Investment Officer -
Chief Investment Officer 2011-12-31

Former positions of Aaron Diefenthaler

CompaniesPositionEnd
Portfolio Manager-Equities -
Corporate Officer/Principal -
Portfolio Manager-Fixed Income 2010-07-27
See the detail of Aaron Diefenthaler's experience

Training of Aaron Diefenthaler

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

Connections

33

1st degree connections

11

1st degree companies

Male

Female

Members of the board

Executives

Linked companies

Private companies11

Finance

Finance

Finance

Finance

Finance

Consumer Services

Finance

Finance

Finance

Consumer Services

Finance

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