American International Group (AIG) has appointed Christine Williams as head of global client and broker relationships, effective September 1, 2026. Williams joins from Aon, where she served as co-head of Aon US and sat on the broker's executive committee. The role is a new position at AIG.

Williams will report to Jon Hancock, executive vice president and CEO of general insurance at AIG. She will be based in New York and will oversee enterprise-wide client and broker relationships.

An Aon pipeline under Andersen

Eric Andersen joined AIG as president and CEO on June 1, 2026 after nearly 30 years at Aon. Williams worked alongside Andersen at Aon before his departure.

Williams joined Aon in 2002 and held global specialty product and financial lines roles before becoming Northeast region leader and then co-head of Aon US.

Hancock said the hire reflected AIG's effort to align its global capabilities with client and distribution needs. "Christine Williams is a highly accomplished insurance executive recognized across the industry for her track record of driving growth and strengthening client relationships," he said. "I look forward to welcoming Christine to AIG as we further connect our global capabilities with the evolving needs of our clients and partners."

Williams said she was drawn to AIG's scale and capabilities. "AIG's global scale, deep technical expertise and diversified businesses are distinct competitive advantages," she said. She added that she looked forward to serving clients and partners.

A leadership team taking shape

Williams's appointment runs alongside that of Nancy Bewlay, named global chief underwriting officer on July 1, 2026, also effective September 2026. AIG posted Q1 2026 underwriting income of US$774 million, up nearly 220% year on year. The combined ratio improved to 87.3% from 95.8% a year earlier.

The portfolio these two executives will oversee has grown significantly under Andersen's predecessor. AIG acquired the renewal rights of Everest Group's global retail commercial insurance portfolios for US$301 million. It also completed a 35% equity stake in Convex for approximately US$2.1 billion.