Anthony Ahern and John Buelow joined the board of directors of Fond du Lac, Wis.-based National Exchange Bank & Trust.
Ahern is president and chief operating officer for Minneapolis-based fire protection company J.F. Ahern Co. He has a bachelor’s degree from St. Norbert College, De Pere, Wis.
Buelow joined marine engine manufacturer Mercury Marine in 2004, and has held a variety of positions in finance, including vice president and CFO of Brunswick Marine in Europe, the Middle East and Africa and Asia-Pacific. He has a Bachelor of Business Administration degree from the University of Wisconsin-Oshkosh and an MBA from the University of Wisconsin-Milwaukee.