GiveRate / All records / Forbes 400 (Sept. 2026) / Trevor Rees-Jones
Trevor Rees-Jones
13.9%
Trevor Rees-Jones has given an estimated 13.9% of total wealth: $1B in lifetime giving against a $6.2B net worth.
- GiveRate
- 13.9%
- Net worth
- $6.2B
- Stated lifetime giving
- $1B
- Forbes 400
- #269 · Oil & gas · Dallas, Texas
- Status
- Calculated estimate
- Sources
- Forbes 400 profile · Sept. 2026
The math
$1B lifetime giving (estimated, mostly via foundation) ÷ ($1B + $6.2B net worth) ≈ 13.9%. Forbes philanthropy score 4 of 5 (10–20% of net worth given), which agrees.
Profile
- Age
- 75
- Residence
- Dallas, Texas
- Industry
- Energy
- Source of wealth
- Oil & gas
- Self-made
- Yes
- One-year change
- $5.9B (#255) in Sept. 2025 to $6.2B (#269) in Sept. 2026, a gain of 5%.
What the range means in dollars
Forbes gives Trevor Rees-Jones a philanthropy score of 4 out of 5, meaning lifetime giving equals 10% to 20% of current net worth. On a $6.2B fortune, that implies lifetime giving of roughly between $620M and $1.2B. 17 of the 400 share this score, 353 score lower and 13 score higher.
For scale: 10% to 20% of a $50,000 household income would be $5,000 to $10,000.
Giving on record
Rees-Jones and wife Jan have given away an estimated $1 billion, mostly through their foundation.
From the Forbes profile (Sept. 2026).
Others in Energy
- Lyndal Stephens Greth & family: Not scored · $30.0B
- Harold Hamm & family: 1–5% · $19.0B
- George Kaiser: 10–20% · $16.5B
- Jeffery Hildebrand: 1–5% · $14.7B
- Robert Pender: Under 1% · $14.3B
- Michael Sabel: Under 1% · $14.3B
Others in Texas
- Elon Musk: Under 1% · $908B
- Michael Dell: 1–5% · $263B
- Alice Walton: 1–5% · $118B
- Elaine Marshall & family: Under 1% · $32.2B
- Lyndal Stephens Greth & family: Not scored · $30.0B
- Stanley Kroenke: Under 1% · $27.6B
Questions
How much has Trevor Rees-Jones given to charity?
Forbes scores Trevor Rees-Jones 4 of 5 for philanthropy, meaning lifetime giving of 10% to 20% of net worth, roughly between $620M and $1.2B on a $6.2B fortune. GiveRate calculates 13.9% of total wealth from stated lifetime giving of $1B.
What is Trevor Rees-Jones' net worth?
Forbes estimates $6.2B as of September 2026, ranking #269 on the Forbes 400.
What is Trevor Rees-Jones' GiveRate?
13.9%. GiveRate is lifetime giving as a share of wealth, built from published Forbes figures. See giverate.org/methods/ for the method.
GiveRate is an estimate built only from the published figures above. Wealth and giving totals are themselves estimates. See methods. Spot an error? Request a correction. See all Forbes 400 (Sept. 2026) · Open in the interactive rankings · Calculate your own GiveRate