Sierra Signorelli
CEO U.S. and CEO Commercial Insurance
Nationality:U.S.
Born: 1975
Skills and experience
Sierra Signorelli took on the role of CEO U.S. and CEO Commercial Insurance in January 2026. Prior to that, she served as CEO Commercial Insurance and became a member of the Executive Committee in March 2021. She has extensive experience in the insurance industry, serving as Zurich’s Group Chief Underwriting Officer from October 2020 and as Chief Underwriting Officer for Commercial Insurance after joining the company in 2017. Her prior experience includes 17 years with American International Group where she held a number of senior leadership roles in the insurer’s Global Specialties division, including global chief underwriting officer, specialty lines and specialty executive in Asia/Pacific and global head of Network Partner Practice.
External appointments
None.
Educational background
Ms. Signorelli holds a Bachelor of Science degree in environmental science from the University of California, Santa Barbara. She completed the Stanford Executive Program at Stanford University School of Business.
