EVANSVILLE - The president and chief executive officer of the Southwest Indiana Chamber is stepping down to take a new position. Christy Gillenwater is leaving later this year to become president and CEO of the Greater Chattanooga Chamber of Commerce.

Gillenwater has led the Southwest Indiana Chamber since January 2013. Under her leadership, the chamber was named Indiana Chamber of the Year in 2015 and National Chamber of the Year in 2016. Earlier this year, Gillenwater was named Chamber Executive of the Year by the Indiana Chamber Executives Association. 

"In the more than four years that Christy has been at the helm, the Southwest Indiana Chamber has firmly established itself as one of the leading chambers in the Country," said Jim Sandgren, board chairman of the chamber. "On behalf of our board of directors and our community, I would like to thank Christy for her collaborative spirit and commitment to helping community organizations drive economic development in our region."

Gillenwater calls her time with the chamber "the greatest highlight and most fulfilling chapter of my career." She will begin her new role December 1. 

Tim Hayden, chief communications and engagement officer for the chamber, will serve as interim president and CEO. The chamber says it will hold a national search for Gillenwater's permanent successor.