Jack Kaiser

Chairman

Jack Kaiser has served as a Security Financial Services Corporation director since 2009 and its Board chair since 2022.  He is the president of Banbury Place, Inc., a multi-use, multi-tenant real estate development with more than 160 tenants. Jack also is president of Cigan Properties, LLC, which is a commercial real estate development firm. Both companies are located in Eau Claire, WI.

Mark Oldenberg

President & CEO

Mark Oldenberg has more than 25 years of experience in community banking including expertise in accounting, finance, marketing, compliance, audit, operations, human resources, and lending. 

Mark earned degrees in both finance and accounting from the University of Wisconsin-Eau Claire and now serves as an Advisory Board member for UW-Eau Claire's College of Business. He currently serves as president of the Boys & Girls Club of the Chippewa Valley and also has served on the Board of the Boys & Girls Club in Wausau. 

Mark is married with three children and in his free time enjoys golfing and travel.

Chuck Forster

Chuck Forster has served as a director of Security Financial Services Corporation since 2013.  A retired banker, Chuck began his banking career in 1973 in Eau Claire and has been involved with many community organizations. He owns and manages several real estate development companies located in Eau Claire.

Bob Komro

Bob Komro became a director of Security Financial Services Corporation in 2015.  He is the president and general manager of Komro Sales and Service, Inc. located in Durand, WI, which provides industry-leading and cutting-edge technology to dairy customers including some of the country's biggest and most progressive dairy producers.

Jim Kusilek

James (Jim) Kusilek was elected to the SFSC Board of Directors in 2024. Jim started his career as an agricultural banker and finished his banking career involved in commercial banking. His career path changed 25 years ago when he and his wife, Audrey, were part of a family purchase of a struggling 300-cow dairy in Barron County. The couple now fully owns the ag operation, which has grown to 1,600 dairy cows and 1,200 heifers with 25 employees.

In addition to their dairy farm, Jim and Audrey are entering the renewable energy industry. A manure digester is being developed on the dairy, and the Kusileks are one of eight families that have agreed to lease land for a 240-megawatt commercial solar farm.

Jim has been involved with several organizations including the Wilmar and Sheboygan Jaycees, the Rice Lake Rotary Club, Bethany Church Council, the Dairy Business Association, the American Dairy Coalition, and the Professional Dairy Producers of WI. He currently serves as Board president for the Rice Lake Pregnancy Help Center.

Jim Mayo

Jim Mayo has served as a director of SFSC since 2006. He is a retired banker with 50 years of service in the industry. Jim was employed by Security Financial Bank from 1999-2018 during which he served as the president and chief executive officer of Security Financial Bank for 10 years and Security Financial Services Corporation for 11 years.

Jim Price

Jim Price became a director of Security Financial Services Corporation in 2014 and previously served as a director for Peoples State Bank of Bloomer for two years.  He is the president and owner of Midwest Physical Therapy, Inc. located in Bloomer, WI, which provides physical therapy, occupational therapy, and speech language pathology in multiple locations throughout the Chippewa Valley. 

Jeanne Szepieniec

First elected to the SFSC Board in 2024, Jeanne Szepieniec started her strong work ethic at the age of 15 by working at her family-owned car dealerships, Chilson Automotive. Her roles at the dealership included project management, customer service, operations, product integration, charity contributions, software installations, sales management, and digital marketing in more than one location.

Jeanne holds an MBA from the University of Wisconsin-Eau Claire. She serves as the president of the Wisco Cooperative Board of Directors, is a Board member for the Regis Catholic Schools Foundation, and volunteers at Immaculate Conception Church. 

Andy Wieser

Andy Wieser was elected to the SFSC Board in 2020. He is president/CEO of Wieser Concrete Products, Inc., a nationally recognized precast concrete manufacturer with 170 employees. The company is headquartered in Maiden Rock, Wis. and has additional locations throughout Wisconsin and southern Illinois.