Aon Appoints David DeBrunner as Chief Accounting Officer, Effective September 15
Aon names David DeBrunner as Chief Accounting Officer to strengthen financial leadership and reporting. #Aon #FinancialLeadership

Executive Summary
Aon plc, a global professional services firm providing a broad range of risk, retirement, and health solutions, has announced the appointment of David DeBrunner as Chief Accounting Officer (CAO), effective September 15. This strategic leadership addition aims to enhance Aon’s financial reporting, compliance, and accounting operations amid evolving regulatory and market environments.
Company Overview
Aon is a leading global provider of risk management, insurance brokerage, and human capital consulting services. With operations in more than 120 countries, Aon serves a diverse client base across industries, focusing on delivering innovative solutions to complex business challenges.
About David DeBrunner
David DeBrunner brings extensive experience in accounting and financial leadership, having held senior roles in multinational corporations. His expertise includes SEC reporting, internal controls, and financial compliance, positioning him to drive Aon’s accounting function forward.
Recent Financial Highlights (2021-2024)
Fiscal Year | Revenue (USD Billions) | Net Income (USD Billions) | Operating Margin (%) |
---|---|---|---|
2021 | 11.0 | 1.5 | 18.5 |
2022 | 11.5 | 1.6 | 19.0 |
2023 | 12.0 | 1.7 | 19.5 |
2024 (Projected) | 12.5 | 1.8 | 20.0 |
Strategic Implications
The appointment of David DeBrunner as CAO is expected to strengthen Aon’s financial governance and enhance the accuracy and timeliness of financial disclosures. His leadership will be critical in navigating complex accounting standards and supporting Aon’s growth strategy.
Risks and Considerations
- Integration of new leadership within existing finance teams.
- Maintaining compliance amid evolving regulatory requirements.
- Ensuring continuity in financial reporting during leadership transition.
Conclusion
Aon’s selection of David DeBrunner as Chief Accounting Officer reflects its commitment to robust financial management and transparency. Stakeholders should view this appointment as a positive step toward sustaining Aon’s operational excellence and investor confidence.