RenaissanceRe Holdings Ltd. anounced management changes, effective March 1, 2017.

Sean Brosnan will be promoted to senior vice president and chief investment officer of RenaissanceRe Holdings. Brosnan is vice president and managing director for investments of Renaissance Services of Europe Ltd., and CEO of Renaissance Reinsurance of Europe.

Aditya Dutt will take on the additional role of treasurer of RenaissanceRe Holdings, which will include responsibility for investor relations and corporate development. Dutt is president of RenaissanceRe Ventures Ltd. and senior vice president of RenaissanceRe Holdings. Dutt will continue to lead RenaissanceRe Holdings' ventures unit.

Todd Fonner, senior vice president, chief investment officer and treasurer of RenaissanceRe Holdings, will leave the company to pursue other opportunities, effective March 31, 2017.