AIG ▲ +0.0% - American International Group, Inc. $AIG - AIG Appoints Sierra Signorelli CEO of Americas and Global Personal Insurance American International Group appointed Sierra Signorelli as CEO of its Americas and Global Personal Insurance division, a leadership change that reflects the company's organizational priorities in a key business segment. The appointment had no immediate impact on the stock, which closed flat on the news. 21-SEP-2026 06:54 AM ET