Aon Executive and Leadership Team

Melissa Cantell, the Chief Executive Officer & Executive Director (New Zealand) at Aon, leads all business activities and strategic growth initiatives within the New Zealand market. By directing the local delivery of risk management and insurance brokerage services, the Chief Executive Officer & Executive Director (New Zealand) ensures that the firm meets the specific needs of regional clients. Melissa Cantell oversees the development of local talent and the expansion of service offerings in professional liability and healthcare products. This leadership role involves representing the firm to key stakeholders and ensuring that local operations align with global corporate standards. By fostering a culture of innovation, the Chief Executive Officer & Executive Director (New Zealand) drives market penetration and strengthens client relationships. Through the effective management of regional resources, the Chief Executive Officer & Executive Director (New Zealand) ensures that the firm maintains a dominant position in the local insurance and consulting landscape.

Paul Griessel, the Chief Executive Officer (South Africa) at Aon, leads the firm's comprehensive risk management and human resource consulting operations within South Africa. By directing the local strategy for insurance and reinsurance brokerage, the Chief Executive Officer (South Africa) ensures that the firm addresses the unique challenges faced by regional clients. Paul Griessel oversees the delivery of professional liability, workers' compensation, and healthcare products, tailoring solutions to the specific needs of the South African market. This leadership role involves managing local talent and fostering strong relationships with key industry partners. By driving operational excellence, the Chief Executive Officer (South Africa) ensures that the firm remains a trusted advisor to businesses across various sectors. Through the effective deployment of global resources, the Chief Executive Officer (South Africa) strengthens the firm's market position, ensuring that the organization continues to deliver high-value services that support the growth and resilience of South African enterprises.

Eric Teitel, the Regional Chief Financial Officer at Aon, manages financial planning, reporting, and capital allocation strategies within specific geographic territories. By overseeing fiscal health, the Regional Chief Financial Officer ensures that regional operations support the broader financial targets of the firm. Eric Teitel analyzes market trends to provide insights on revenue growth, cost management, and investment consulting performance. This leadership role involves rigorous monitoring of financial risks associated with insurance brokerage and benefits administration services. By maintaining strict adherence to regulatory standards, the Regional Chief Financial Officer protects the firm's assets while enabling expansion into new markets. Through the development of robust financial models, the Regional Chief Financial Officer supports the delivery of actuarial and catastrophe management services. Ultimately, the Regional Chief Financial Officer secures the financial foundation necessary for the firm to provide high-value advisory services to clients across various industries.

Marcelo Vieira, the Chief Operating Officer at Aon, directs global operational workflows to enhance service delivery across risk and human capital segments. By streamlining internal processes, the Chief Operating Officer optimizes resource allocation for complex insurance brokerage and reinsurance advisory mandates. Marcelo Vieira maintains rigorous oversight of enterprise-wide efficiency initiatives, ensuring that service standards remain consistent across diverse international markets. This leadership role involves close collaboration with the executive board to refine business models and improve profitability metrics. Through the implementation of advanced data analytics, the Chief Operating Officer drives operational excellence, allowing the firm to scale effectively while managing professional liability and workers' compensation portfolios. By fostering cross-functional synergy, the Chief Operating Officer secures long-term stability for the organization, ultimately strengthening the competitive position of the firm within the global risk management landscape.

Grant Winkleblack, the Chief Operating Officer, Benx (North America) at Aon, oversees the operational delivery of benefits administration and human resource outsourcing services across the North American market. By architecting scalable service platforms, the Chief Operating Officer, Benx (North America) ensures that employee benefit programs are structured and administered with maximum efficiency. Grant Winkleblack manages the integration of technology and human capital expertise to provide seamless solutions for complex client needs. This role involves coordinating with regional teams to enhance the delivery of retirement and compensation consulting services. By focusing on operational precision, the Chief Operating Officer, Benx (North America) drives improvements in service quality and client retention. Through the optimization of business process outsourcing, the Chief Operating Officer, Benx (North America) supports the firm's mission to provide comprehensive human resource consulting, ensuring that North American operations remain at the forefront of industry standards.

Vedad Arslanagic, the President & Chief Operating Officer at Aon, oversees the firm's global operational framework and strategic execution across all business segments. By directing the integration of risk management and human capital consulting services, the President & Chief Operating Officer ensures that the firm delivers a unified value proposition to clients worldwide. Vedad Arslanagic manages the alignment of business processes with the firm's overarching mission to provide data-driven insights and advisory services. This leadership role involves close coordination with the executive board to drive growth, improve operational efficiency, and maintain high standards of service delivery. By optimizing the firm's global infrastructure, the President & Chief Operating Officer enables the organization to scale effectively while addressing complex client needs in insurance, reinsurance, and human resources. Through the effective management of global operations, the President & Chief Operating Officer secures the firm's position as a premier provider of risk and human capital solutions.

Sayani Seth, the Chief of Staff at Aon, coordinates strategic priorities and facilitates communication across the executive leadership team. By managing high-level projects, the Chief of Staff ensures alignment between corporate objectives and daily business operations within the Risk Solutions and HR Solutions segments. Sayani Seth monitors the execution of critical initiatives, providing the necessary support to maintain momentum on enterprise risk management and human capital consulting goals. This role requires constant interaction with senior stakeholders to synthesize complex information into actionable business strategies. By optimizing the flow of information, the Chief of Staff enables faster decision-making processes that directly impact the firm's ability to address client needs in the agribusiness, aviation, and healthcare sectors. Through meticulous planning and organizational oversight, the Chief of Staff drives the successful implementation of corporate policies, ensuring that the firm remains agile in a rapidly evolving global market.

Colin Russell, the Chief Risk Officer (APAC) & Chief Revenue Officer at Aon, manages the dual responsibilities of regional risk oversight and global revenue generation. By identifying and mitigating potential threats to the firm's operations in the APAC region, the Chief Risk Officer (APAC) & Chief Revenue Officer ensures that risk management practices remain robust. Simultaneously, the Chief Risk Officer (APAC) & Chief Revenue Officer drives revenue growth by identifying new business opportunities in insurance and reinsurance brokerage. Colin Russell coordinates with regional teams to align sales strategies with risk appetite, ensuring sustainable expansion. This leadership role involves balancing the pursuit of aggressive growth targets with the necessity of maintaining high standards of enterprise risk management. By leveraging data and analytics, the Chief Risk Officer (APAC) & Chief Revenue Officer optimizes the firm's revenue streams, ensuring that the organization continues to provide high-value advisory services to clients across the APAC region.

Joanne Kalamoudacos, the Chief Information Officer (APAC) at Aon, directs the technology strategy and digital infrastructure for the firm's operations across the APAC region. By implementing advanced data and analytics platforms, the Chief Information Officer (APAC) enables the delivery of sophisticated risk management and insurance brokerage services. Joanne Kalamoudacos oversees the development of secure systems that support the firm's human capital consulting and benefits administration functions. This leadership role involves collaborating with global technology teams to ensure that regional systems are scalable, resilient, and compliant with local regulations. By driving digital transformation, the Chief Information Officer (APAC) enhances the firm's ability to provide real-time insights to clients. Through the effective management of IT resources, the Chief Information Officer (APAC) ensures that the firm maintains a technological edge, supporting the overall mission of providing high-quality advisory services in a complex and evolving digital environment.

Érika Katsuragi, the Human Capital Latin America Chief of Staff & Head of Strategy at Aon, coordinates strategic planning and operational execution for the human capital segment in Latin America. By developing long-term growth strategies, the Human Capital Latin America Chief of Staff & Head of Strategy ensures that the firm's retirement, compensation, and benefits administration services meet the evolving needs of regional clients. Érika Katsuragi manages cross-functional teams to implement strategic initiatives that enhance the firm's market presence. This leadership role involves analyzing regional market trends to identify opportunities for service expansion and process improvement. By aligning local operations with global human capital objectives, the Human Capital Latin America Chief of Staff & Head of Strategy drives efficiency and service quality. Through the effective management of strategic projects, the Human Capital Latin America Chief of Staff & Head of Strategy ensures that the firm remains a leader in human resource consulting across Latin America.