Aon, a leading global professional services firm, announced two promotions with its Reinsurance executive leadership team to help insurer clients in the UK and APAC navigate volatility, optimise capital and drive profitable growth.

Andrew Laing has been named UK CEO for Reinsurance, subject to regulatory approval, and will retain his role as Aon’s global Facultative CEO, a position he has held since 2016 overseeing and driving a consistently high growth division within Reinsurance.

Rupert Moore, who has successfully served as UK CEO for Reinsurance for the past three years, will take on a new role as CEO of Reinsurance across Asia Pacific and Chairman of the region for Aon’s Strategy and Technology Group. He will relocate to Singapore later this year and serve as an advisor to Aon’s APAC CEO Jennifer Richards to help advance the firm’s Risk Capital strategy for Japan. Moore brings deep experience in the region, having previously served as CEO of Reinsurance in Japan for five years.

“This is an exciting time for our Reinsurance business as we announce these further high calibre leadership appointments. Andrew and Rupert have combined decades of experience in the (re)insurance marketplace and have a proven ability to achieve long-term sustainable growth while shaping better business decisions on behalf of clients. Following the recent leadership promotions within Reinsurance, these additional appointments will continue to accelerate the ambition and velocity of our industry-leading Reinsurance business to drive client value”, said Alfonso Valera, CEO of international for Reinsurance at Aon.

The appointments follow the firm’s recent announcements that Valera now serves as CEO of international for Reinsurance, responsible for UK, EMEA and APAC, Steve Hofmann serves as CEO of Americas for Reinsurance, responsible for North America and Latin America, George Attard serves as global head of strategy for Reinsurance, and Tomas Novotny serves as CEO of EMEA and chairman of international for Reinsurance.

David DeBrunner will join Aon as Senior Vice President, Global Controller and Chief Accounting Officer on September 15, 2025. As Aon’s principal accounting officer, DeBrunner will report to Aon CFO Edmund Reese with oversight of the firm’s accounting and financial reporting functions. “David’s leadership experience and deep expertise in accounting and financial services will be invaluable to both our shareholders and colleagues”, commented Edmund Reese.

DeBrunner succeeds Michael Neller, who has served as Aon’s Chief Accounting Officer and Global Controller since February 21, 2018. On March 13, 2025, Aon announced that Neller will transition into a new role as Deputy Global Chief People Officer and Head of Total Rewards and Talent Development for the firm.

Chris Spiridis rejoined the firm as global enterprise construction project leader, effective July 18, 2025. In his new role, Spiridis will lead the strategy for Enterprise client global construction projects. He will engage Aon’s specialist teams in Project Solutions, Builders Risk, Professional Liability, Claims and loss control across Aon’s global regions to ensure Aon delivers the best results globally for our Enterprise clients. He will also harness the firm’s investments in data, analytics and proprietary content to deliver differentiated value to clients. With more than two decades of experience, Spiridis brings deep expertise in complex infrastructure and construction risk, along with a strong track record of client advocacy and innovation.

“Chris’s return to Aon reflects our commitment to investing in top talent to meet the evolving needs of our clients”, said Rob McDonough, CEO of construction, infrastructure and surety, North America. “His expertise will be instrumental as we continue to deliver bold solutions for the world’s most ambitious construction projects”, Rob McDonough added.

On July 16, Aon announced the appointments of Alfonso Valera as CEO of International for Reinsurance, responsible for UK, EMEA and APAC, and Steve Hofmann as CEO of Americas for Reinsurance, responsible for North America and Latin America. The firm also announced the appointment of George Attard as Global Head of Strategy for Reinsurance and Tomas Novotny as Chairman of International for Reinsurance.

"We are delighted to promote Alfonso, Steve, George and Tomas into these important leadership roles as we accelerate the ambition and velocity of our industry-leading Reinsurance solutions business", said Marcell, who leads Aon's integrated Risk Capital and Human Capital capabilities across the firm's Reinsurance, Commercial Risk, Health, Wealth and Talent teams.