Sentinel FCU Names New CEO

Keith Robbennolt

BOX ELDER, S.D.—Sentinel Federal Credit Union has named a new CEO.

The credit union said Keith Robbennolt will lead the organization, succeeding Nancy Ellwein, who is retiring after leading the CU for 18 years.

“I am honored and humbled by the opportunity to join and lead such an outstanding organization and build upon Sentinel Federal Credit Union’s success,” said Robbennolt.

Robbennolt has spent his career within the financial services industry, including as senior vice president at Black Hills Community Bank in Rapid City, S.D., and most recently as senior vice president at Security First Bank.

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Copyright Year: 2026
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