![Gregory Case](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Gregory Case
Chief Executive Officer at
AON PLC
Net worth: 544 M $ as of 2026-02-27
Profile
Presently, Gregory C. Case holds the position of Chief Executive Officer & Executive Director at Aon Plc and Chief Executive Officer & Executive Director at Aon Plc (United Kingdom), President & Chief Executive Officer at Aon Re Worldwide, Inc. and President at Aon Corp. (Illinois) (which are all subsidiaries of Aon Plc). He is also on the board of 7 other companies. In the past Mr. Case was Head-Financial Services Practice at McKinsey & Co., Inc., Principal at Federal Reserve Bank of Kansas City and Principal at Piper Jaffray, Inc. Mr. Case received an undergraduate degree from Kansas State University and an MBA from Harvard Business School.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
AON PLC CLASS A 0.76% | 2026-02-18 | 1,621,773 ( 0.76% ) | 544 M $ | 2026-02-27 |
Gregory Case active positions
| Companies | Position | Start |
|---|---|---|
| AON PLC | Chief Executive Officer | 2005-03-31 |
Aon Global Ltd. (United Kingdom)
 Aon Global Ltd. (United Kingdom) Insurance Brokers/ServicesFinance Provides insurance brokerage, risk management and human capital consulting services | Chief Executive Officer | 2005-04-03 |
Aon Botswana (Pty) Ltd.
 Aon Botswana (Pty) Ltd. Insurance Brokers/ServicesFinance Provides insurance brokerage services | Chief Executive Officer | - |
Aon Corp.
 Aon Corp. Insurance Brokers/ServicesFinance Provides insurance and risk management services | Chief Executive Officer | - |
Maurice R. Greenberg School of Risk Management, Insurance
 Maurice R. Greenberg School of Risk Management, Insurance Other Consumer ServicesConsumer Services Functions as a College/University | Director/Board Member | - |
Good Finch Co | Director/Board Member | - |
American Cancer Society's CEOs Against Cancer | Director/Board Member | - |
Ann & Robert H. Lurie Children's Hospital of Chicago
 Ann & Robert H. Lurie Children's Hospital of Chicago Hospital/Nursing ManagementHealth Services Provides healthcare services to children | Director/Board Member | - |
World Business Chicago
 World Business Chicago Miscellaneous Commercial ServicesCommercial Services Provides economic data and statistical assistance services | Director/Board Member | - |
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Former positions of Gregory Case
| Companies | Position | End |
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Training of Gregory Case
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
62
1st degree connections
21
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 21 |
|---|---|
Aon Global Ltd. (United Kingdom)
Aon Global Ltd. (United Kingdom) Insurance Brokers/ServicesFinance Provides insurance brokerage, risk management and human capital consulting services | Finance |
McKinsey & Co., Inc.
 McKinsey & Co., Inc. Miscellaneous Commercial ServicesCommercial Services Operates as a management consulting firm | Commercial Services |
Kansas State University
 Kansas State University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Discover Financial Services
 Discover Financial Services Finance/Rental/LeasingFinance Provides online banking, credit card, personal & home loan and online banking services | Finance |
Ann & Robert H. Lurie Children's Hospital of Chicago
Ann & Robert H. Lurie Children's Hospital of Chicago Hospital/Nursing ManagementHealth Services Provides healthcare services to children | Health Services |
Aon Re Worldwide, Inc.
 Aon Re Worldwide, Inc. Insurance Brokers/ServicesFinance Provides reinsurance advisory and execution services | Finance |
Federal Reserve Bank of Kansas City
 Federal Reserve Bank of Kansas City General GovernmentGovernment Federal reserve bank | Government |
World Business Chicago
World Business Chicago Miscellaneous Commercial ServicesCommercial Services Provides economic data and statistical assistance services | Commercial Services |
The Field Museum of Natural History
 The Field Museum of Natural History Other Consumer ServicesConsumer Services Operates as a public museum | Consumer Services |
The Financial Services Roundtable
 The Financial Services Roundtable Miscellaneous Commercial ServicesCommercial Services Provides advisory services to financial service industry | Commercial Services |
Piper Jaffray, Inc.
 Piper Jaffray, Inc. Investment Banks/BrokersFinance Provides investment banking services | Finance |
The Economic Club of Chicago (Illinois)
 The Economic Club of Chicago (Illinois) Miscellaneous Commercial ServicesCommercial Services Engages in fostering connections among leaders to encourage dialogue on important economic and social issues | Commercial Services |
Aon Foundation
 Aon Foundation Aon Foundation is a company based in Chicago, IL. | |
Aon UK Ltd.
 Aon UK Ltd. Investment ManagersFinance Provides risk management services, insurance and reinsurance brokerage, and human capital and management consulting | Finance |
Aon Botswana (Pty) Ltd.
Aon Botswana (Pty) Ltd. Insurance Brokers/ServicesFinance Provides insurance brokerage services | Finance |
American Cancer Society's CEOs Against Cancer | |
Aon Corp.
Aon Corp. Insurance Brokers/ServicesFinance Provides insurance and risk management services | Finance |
Aon Plc
 Aon Plc Insurance Brokers/ServicesFinance Provides insurance and risk management services | Finance |
Harvard Business School
 Harvard Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Maurice R. Greenberg School of Risk Management, Insurance
Maurice R. Greenberg School of Risk Management, Insurance Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Good Finch Co |
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