Oldenberg named new Security Financial Bank CEO

Security Financial Bank has appointed Mark C. Oldenberg to succeed Paul Rudersdorf as SFB president on Jan. 10. 

Rudersdorf is expected to continue serving as CEO of SFB and CEO and president of its bank holding company, Security Financial Services Corp., until he retires at the end of 2022. Oldenberg is then expected to assume those roles. “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. His areas of expertise include finance, accounting, marketing, compliance, audits, operations, human resources and lending. He served as executive vice president/chief financial officer for SFB from 2008-2011. He has degrees in finance and accounting from the University of Wisconsin-Eau Claire, and now serves as an advisory board member for the University of Wisconsin-Eau Claire’s College of Business. 

 “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.

Rudersdorf, SecurityFinancial Bank CEO and president for the past five years, has successfully overseen two acquisitions and the bank’s growth to more than $850 million. “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 added.