David Duffield

David Duffield is an American engineer and entrepreneur born in 1941, with an estimated net worth of ~$11.8B Wikidata. He is identified in the data as a technology billionaire in Nevada Wikidata. Recent reporting links him to Workday share sales and to funding for engineering and quantum research projects NewsAPI GDELT.

Business & SEC Activity

The data identifies Duffield as an engineer and entrepreneur, but does not provide a full company history Wikidata. Recent news reports say he sold 107,500 shares of Workday, and other coverage describes major gifts through Duffield Engineering for Cornell-related quantum facility work NewsAPI GDELT. A stock sale like this is a public market transaction reported in news coverage, while the Cornell item reflects a funding commitment to a research project GDELT.

Philanthropy

Two foundations tied to Duffield reported $27,962,735 in grants paid in 2023 and held $1,133,564,852 in total assets ProPublica 990. The Dave And Cheryl Duffield Foundation reported $13,429,679 in grants paid and $873,591,286 in assets, while The Duffield Family Foundation reported $14,533,056 in grants paid and $259,973,566 in assets ProPublica 990. A third foundation listed in the data reported $0 in grants, assets, revenue, and expenses ProPublica 990.

Political Activity

From June 20, 2022 through December 31, 2025, the data shows 100 federal contributions totaling $2,049,683.90 FEC. Most of that money went to PACs and other committees, including $2,000,000 to DUTY FIRST NEVADA PAC; the party breakdown shows $2,019,865.95 to PAC/Other, $29,600 to Republican recipients, and $217.95 to Democratic recipients FEC.

In the News

Recent coverage from March 2026 focused on AI wealth creation and a reported Workday stock sale by David Duffield NewsAPI. In May 2026, reporting said Duffield Engineering committed $13.5M to a quantum facility, including coverage from Cornell and Mirage News GDELT. The news items in this dataset do not add biographical details beyond those transactions and funding announcements NewsAPI GDELT.