T. Denny Sanford, the owner of First Premier Bank of South Dakota, has passed away at 90. The death of the banking giant was announced by South Dakota’s Governor, Larry Rhoden via a press release on Saturday, July 18. A cause of death was not announced.
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The release also included a series of important donations that T Danny Sanford has made over the years to the state of South Dakota.
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In 2025, Forbes had announced that T. Denny Sanford, with a net worth of $2.1 billion, is South Dakota’s richest person. As of July 2026, his net worth is $2.4billion, per Forbes.
A quote from the Gov. Rhoden included in the statement from the South Dakota Governor’s office, read: “It is with great sadness that Sandy and I mourn the loss of T. Denny – a man who has so generously and intentionally invested in the great state of South Dakota.
“His contributions will not be forgotten, and South Dakota will forever be impacted by his legacy. Put simply, he was the greatest philanthropist in South Dakota history.”
