Rees-Jones Foundation

Trevor Rees-Jones, the billionaire founder of Chief Oil & Gas, and his wife Jan Rees-Jones, who serves as vice chairman of the foundation, are the central decision-makers. The foundation operates with a family-governance structure, with the next generation—sons Trevor R. and David G. Rees-Jones—running the family's investment activities through Rees-Jones Holdings rather than directly managing the foundation's grantmaking.

The wealth originates from Chief Oil & Gas, the Dallas-based exploration and production company founded by Trevor Rees-Jones. Chief Oil & Gas assembled a dominant acreage position in the Barnett Shale natural gas play and sold the bulk of its assets in a multi-billion-dollar transaction with Devon Energy and other buyers, generating the liquidity that now funds both the foundation and the family's broader investment portfolio.

The foundation concentrates its grantmaking on three areas: children's health, human services, and education. The geographic focus is overwhelmingly Dallas-Fort Worth. Signature commitments include a $50 million gift to establish the Rees-Jones Center for Foster Care Excellence at Children's Health in Dallas. The foundation has also supported Buckner International, Hope International, and several local charter school networks.

The foundation files the required IRS Form 990-PF, which is publicly available, but does not actively publish an endowment figure or seek the kind of institutional transparency common among peer foundations. The foundation itself measures its work by cumulative grantmaking—over $700 million since inception—rather than by asset size. No AUM or corpus figure is publicly disclosed by the foundation.

The foundation is separate from Rees-Jones Holdings, the family's investment and operating entity managed by sons Trevor R. and David G. Rees-Jones. The foundation focuses exclusively on philanthropic grantmaking, while Rees-Jones Holdings oversees the family's real estate portfolio—including the Cook Canyon Ranch, the Clearfork development, and Fields in Frisco—alongside other investments. There is no indication that the foundation co-invests with the family office or makes program-related investments alongside it.

The foundation has a history of aligning with other prominent Dallas philanthropic families and institutions. Trevor Rees-Jones is a close associate of George W. Bush, and the foundation's giving activity has intersected with Bush-connected charitable initiatives. The foundation has also partnered with Children's Health and other local institutions on large-scale capital projects, but generally operates as a family-directed giving trust rather than an institutional co-funder that solicits external grant partners.