Security Financial Bank Names Mark Oldenberg as President

Jerry Bauer, chairman of the Board of Security Financial Bank (SFB) and Security Financial Services Corporation (SFSC), the holding company that owns the Bank, announced the appointment of Mark C. Oldenberg to succeed Paul Rudersdorf as president of SFB effective January 10, 2022. Rudersdorf will continue to serve as CEO of SFB as well as CEO and president of SFSC until he retires at the end of 2022 at which time Oldenberg will assume those responsibilities.

"Mark Oldenberg will be an outstanding asset for Security Financial Bank," Bauer said. "We are excited for this next phase of SFB."

Oldenberg has more than 25 years of experience in community banking including expertise in accounting, finance, marketing, compliance, audit, operations, human resources, and lending. He is no stranger to SFB having served as executive vice president/chief financial officer for SFB from 2008-2011.

"I am looking forward to coming back to a financial institution with a great reputation, that has a proven record of financial success, and being part of a management team with a history of supporting local economic growth," Oldenberg said.

Oldenberg, who received degrees in both finance and accounting from the University of Wisconsin-Eau Claire, now serves as an Advisory Board member for UW-Eau Claire's College of Business. He also has been active with the Boys & Girls Club, serving on the Board for both the Chippewa Valley and Wausau clubs. Oldenberg is married with three children, and in his free time enjoys golfing and travel.

"Mark Oldenberg is the right leader for SFB's future," said Rudersdorf. "With his exceptional experience in the banking industry, he is the ideal president to lead SFB in its next chapter of growth and success."

Rudersdorf has served as CEO/president of SFB for the past five years. During his tenure, Rudersdorf has successfully overseen two acquisitions and grown the bank from a $416 million to $850 million financial institution.