Full Breakdown
Denny Sanford, Billionaire Philanthropist, Dies After Giving Away $4 Billion
7/20/2026, 11:59:38 PM
Death and Philanthropic Legacy
Denny Sanford died on July 18 at age 90. By the time of his death his net worth was estimated at $2.4 billion, yet he had already donated more than $4 billion over his lifetime. Approximately $2 billion of those gifts funded the Sanford Health system, turning a small regional hospital into one of the nation’s largest rural health-care networks. His giving also created the Sanford Underground Research Facility, the Build Dakota and Premier/Freedom scholarships, the Sioux Falls Development Foundation, and major support for the Children’s Home Society of South Dakota.
Rise to Wealth and Giving Strategy
Sanford grew up in St. Paul, Minnesota, and entered the banking world by purchasing a Sioux Falls bank in 1986 that later became First Premier Bank. The bank’s credit-card arm, Premier Bankcard, issued high-interest cards to consumers with poor or no credit—a practice enabled by South Dakota’s permissive banking laws. The venture pushed his net worth past $3 billion. Sanford described his approach as an investor seeking the “best return” for his community, famously telling Forbes in 2007, “I want to die broke.” Beginning in 2007, he gave $400 million to a regional health provider—the largest single health-system gift in U.S. history at that time—ultimately contributing about $2 billion to Sanford Health. He also funded projects in San Diego, including UC San Diego’s Sanford Consortium and the San Diego Zoo and Safari Park.
Official Reactions
South Dakota Governor Larry Rhoden called Sanford “the greatest philanthropist in South Dakota history.” Lt. Governor Tony Venhuizen said Sanford was “a key reason that Sioux Falls has such a strong culture of philanthropy, and many important community improvements benefited from his support.” Premier Bankcard CEO Miles Beacom noted that Sanford “could have done many things with his money, yet he reinvested it in South Dakota.”
Investigation and Controversy
In 2020 ProPublica reported that federal investigators obtained search warrants related to possible possession of child-pornography images tied to an email account linked to Sanford. His lawyers argued that others may have accessed his devices and suggested hacking. South Dakota’s attorney general declined to file charges in 2022, finding no prosecutable offenses within state jurisdiction. The investigation led to Sanford’s removal from the Giving Pledge in 2023.
Verbatim Quotes
- “I want to die broke,” — Denny Sanford, interview with *Forbes* (2007)
- “He could have done many things with his money, yet he reinvested it in South Dakota,” — Miles Beacom, CEO, Premier Bankcard
- “greatest philanthropist in South Dakota history,” — Larry Rhoden, Governor of South Dakota
- “Beyond his high-profile gifts, Denny was a key reason that Sioux Falls has such a strong culture of philanthropy, and many important community improvements benefited from his support,” — Tony Venhuizen, Lieutenant Governor of South Dakota
