Sierra Signorelli Will Become AIG CEO of Americas

Sierra Signorelli will take over the division and join the company's executive team starting January 1, 2027.

Updated on Sept. 21, 2026 in People

Bold flat-color editorial illustration featuring a single dark navy pillar against a cream background, representing corporate leadership hierarchy. — American International Group has appointed Sierra Signorelli as its new CEO of Americas and Global Personal Insurance, effective January 1, 2027. AI Illustration. Upload story photo >

American International Group (AIG) announced that Sierra Signorelli will become the CEO of Americas and Global Personal Insurance on January 1, 2027. She will also join the company's Executive Leadership Team.

Why it matters

The appointment marks a significant return for Signorelli, who previously spent 17 years at AIG within the Global Specialties division. Her leadership will span operations across North America, Latin America, and the Caribbean.

Signorelli brings 17 years of experience from her previous tenure at AIG. She has served on the executive committee at Zurich since 2021.

The players

Sierra Signorelli

She is the incoming CEO of Americas and Global Personal Insurance at AIG and a former member of the executive committee at Zurich.

Eric Andersen

He is the President and CEO of AIG to whom Signorelli will report.

The details

In her new capacity, Signorelli will manage AIG's commercial insurance businesses across North America, Latin America, and the Caribbean, as well as Global Personal Insurance. She is set to report directly to AIG President and CEO Eric Andersen.

Signorelli joined the executive committee at Zurich in 2021.
Signorelli will assume her new CEO role on January 1, 2027.

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Market Landscape

This appointment reflects the ongoing restructuring of AIG's leadership under CEO Eric Andersen as the firm seeks to solidify its operational focus. It highlights a broader trend of large insurance firms recruiting seasoned executives from global competitors to manage regional divisions.

The transition in leadership is not expected to immediately affect retail insurance policyholders or current commercial clients. Customers should anticipate standard operational consistency as Signorelli prepares to take over the division in 2027.

The takeaway

Signorelli's return to AIG after a tenure at Zurich highlights the value of deep internal institutional knowledge coupled with external experience in the insurance sector. Her leadership will be critical in stabilizing the firm's commercial performance across the Americas.