The French insurer will invest €750m in special purpose insurance vehicles managed by PartnerRe.
Donald Callahan has stepped down from the role in Canada after 20 years but will remain with the company.
The broker has identified certain 'opportunistic credit investment strategies' in the markets affected by COVID-19.
Kevin Rehnberg highlighted strong underwriting performance and improvement in pricing across the business.
Buckle aims to address gaps in conventional insurance policies for gig workers.
The appointee will focus on international property facultative reinsurance, primarily in Europe, the Middle East and Africa.
The investment in the Netherlands follows its partnership with Uber to provide flexible insurance for drivers.
Current director of regulation Hugh Savill is retiring at the end of the year.
Substantial losses tied to COVID-19 pandemic, catastrophes and the sale of Fortitude stake dented AIG's results.
The niche portfolios include Northern Irish, affinity and micro business in the UK.