MANITIWOC, Wis.–After 30 years with the CU, UnitedOne Credit Union CEO Kim Rooney has announced plans to retire in June. UOCU has named Chief Lending Officer Amy Sonnemann as her successor.
“Amy is a remarkable leader who understands our mission at its core,” Rooney said in a statement. “Her dedication to our members has been evident since the day she joined us. I have complete confidence that UnitedOne’s future is in excellent hands under her leadership.”
Rooney the credit union in 1995 as its first marketing director and assisted former CEO Dennis Lombard in facilitating the 2002 merger between Manitowoc Community Credit Union and First Superior Credit Union of Sheboygan.
‘Strong Advocate’
“A strong advocate for financial education, Rooney played a pivotal role in launching the first school credit union at Monroe Elementary in 1996,” UnitedOne said in a statement. “She partnership between UnitedOne and the Manitowoc Public School District has since expanded to eight school branches, helping generations of students build financial literacy skills.”
Since becoming CEO in 2009, Rooney has guided UnitedOne through significant growth, increasing assets from $173 million to $329 million in 2025, the CU said.
“Serving our members has been one of the greatest honors of my life,” Rooney said in a statement. “I’ve had the privilege of working alongside an incredible team and witnessing firsthand how a credit union can strengthen a community when people come together with purpose and heart.”
Thirty-Year Career
Sonnemann, a Manitowoc native, also began her career with the credit union 29 years ago. She has held numerous roles since, including six years serving members in the credit union’s Sheboygan offices.
United One said Sonnemann is deeply committed to community involvement and volunteers with several local nonprofits and is passionate about expanding financial education initiatives.
“UnitedOne has been an important part of my life and career,” Sonnemann said in a statement. “I’m honored to continue our mission of helping members achieve financial well-being and strengthening the communities we serve.”
UnitedOne CU has approximately 19,000 members.
