Company Overview

Aon plc is a global professional services firm specializing in risk management, insurance brokerage, reinsurance brokerage, and human capital consulting. The company operates primarily across the insurance and financial services industries, advising organizations on risk transfer, risk mitigation, and workforce-related decisions. Aon generates revenue mainly through advisory and brokerage fees tied to insurance placement, reinsurance structuring, and consulting engagements rather than assuming underwriting risk itself.

The company serves a broad range of customers, including multinational corporations, small and mid-sized enterprises, public sector entities, insurers, and pension funds. Aon is positioned as a data-driven advisory firm, emphasizing proprietary analytics, risk modeling, and integrated solutions that link risk, capital, and people. Founded in 1919 as the Ryan Insurance Group in Chicago, the firm evolved through mergers and acquisitions, adopting the Aon name in 1987 and reorganizing as Aon plc in 2012 with an Irish parent structure while maintaining substantial U.S. operations.

Business Operations

Aon operates through two primary business segments: Commercial Risk Solutions and Health Solutions. Commercial Risk Solutions provides insurance brokerage, reinsurance brokerage, and risk advisory services through business units such as Aon Risk Solutions and Aon Reinsurance Solutions, supporting clients in areas including property and casualty insurance, cyber risk, climate risk, and capital optimization. Health Solutions focuses on employee benefits brokerage, health plan consulting, and actuarial services, helping employers design, finance, and manage workforce health and retirement programs.

The company operates globally with integrated domestic and international platforms, supported by proprietary tools such as advanced catastrophe modeling, data analytics, and benchmarking databases. Aon controls a wide portfolio of wholly owned subsidiaries and operating entities and maintains strategic relationships with insurers, reinsurers, and capital markets participants. Revenue is primarily fee-based and recurring, reflecting long-term client relationships rather than transactional exposure.

Strategic Position & Investments

Aon’s strategy centers on delivering “Aon United,” an integrated advisory model that combines risk, reinsurance, health, and wealth expertise to address complex client needs. Growth initiatives emphasize data and analytics, expanding advisory capabilities in cyber risk, climate risk, and workforce transformation, and deepening cross-solution collaboration across business lines. The company has consistently invested in technology platforms and intellectual property to differentiate its advisory offerings.

Aon has pursued targeted acquisitions to strengthen analytics and consulting capabilities, including the acquisition of NFP Corp., which expanded its middle-market insurance brokerage and benefits consulting presence in the United States. The firm also maintains investments in emerging risk modeling, digital health consulting, and alternative risk transfer solutions, while divesting non-core assets to focus on scalable, advisory-driven businesses.

Geographic Footprint

Aon operates in more than 120 countries, with major operations across North America, Europe, Asia-Pacific, Latin America, and the Middle East & Africa. The company’s global headquarters is in London, while significant executive, operational, and client-facing functions are based in the United States, particularly Chicago, which remains a central hub for leadership and operations.

The firm’s international footprint supports multinational clients with cross-border risk and benefits needs, and Aon maintains a strong presence in major commercial and insurance markets worldwide. Its global scale allows it to place risk in international insurance and reinsurance markets and to advise clients on region-specific regulatory, economic, and workforce issues.

Leadership & Governance

Aon is led by an executive team focused on long-term value creation through client-centric advisory services, data-driven decision-making, and disciplined capital allocation. The leadership philosophy emphasizes integration across business lines, accountability, and sustained investment in talent and analytics to support clients in managing volatility and growth.

Key executives include:

• Gregory C. Case – Chief Executive Officer
• Christa Davies – Chief Financial Officer
• Eric Andersen – President
• Lori Goltermann – Chief Executive Officer, Regions
• Andy Marcell – Chief Executive Officer, Risk Capital
• Lisa Stevens – Chief Administrative Officer