Butke launched his 40-plus year credit union career at the $4 billion Wright-Patt Credit Union in Beavercreek, Ohio as a management trainee and became a vice president. He then served for more than a decade as CEO of $376 million Day Air Credit Union in Kettering, Ohio and the $818 million Telhio Credit Union in Columbus.

Some of Butke's additional achievements at Corporate One included becoming one of the first corporate credit unions to create a national field of membership business model, and developing a CUSO, Primary Financial Company, and the SimpliCD program, a CD investment and issuance program used today by thousands of credit unions nationwide, according to Corporate One's prepared statement.

"A lot has changed in my 40-plus years working at credit unions, but the one thing that has remained constant is the boundless passion of credit unions who work so tirelessly to serve their members," Butke said. "Serving credit unions through my role as CEO of Corporate One has been a gift, and I am excited to start on my next journey."

Jerry Guy, Corporate One board chair and president/CEO of the $1.2 billion KEMBA Financial Credit Union in Gahanna, Ohio, said it will be hard to replace Butke

"Lee is leaving us with a solid foundation on which to build upon, and the board is unanimous in our support of the strategic direction and focus of the organization," Guy said. "The board's mission now is to identify the individual that will continue to support those strategies and drive our vision forward. The board has formed a search committee and hired a national recruiting firm to help us in finding our next CEO."