Thomas Duff
Profile Summary
Thomas Duff is a U.S. billionaire from Mississippi, born in 1956, whose industry is listed as diversified. He has an estimated net worth of ~$4.5 billion RTB. SEC records identify a related filer as Thomas Milton Duff SEC EDGAR.
Business & SEC Activity
SEC EDGAR records associate Thomas Milton Duff with Frozen Food Express Industries Inc. and list 16 filings, including six insider filings SEC EDGAR. The records include a Form 3, which reports an insider’s initial ownership, and Schedule 13D filings and amendments, which disclose significant beneficial ownership in a public company SEC EDGAR.
Philanthropy
Three Duff Family Foundations in Ohio, Mississippi, and Florida reported combined assets of $1,128,330 and $266,762 in grants paid across the listed tax years ProPublica 990. The Mississippi foundation reported $917,577 in assets and $4,512 in grants paid for 2023, while the Ohio foundation reported $126,815 in assets and $246,250 in grants paid for 2020 ProPublica 990.
Political Activity
The FEC data contains at least 100 federal contributions; the figures below cover only the most recent 100 records in the sample, not his full giving history FEC. Those sampled records totaled $31,949.91, including $30,000 to Republican recipients, $150 to Democratic recipients, and $214.08 to a non-national-party recipient; the largest listed recipients were the Republican National Committee at $25,000 and the Mississippi Republican Party at $5,000 FEC.
U.S. Presence
Philanthropy
Foundations are matched to a person by name, not by trustee records — so a same-surname family foundation can land here in error. Every entity below links to its full IRS filing; if one doesn’t belong, tell us at hello@skylarkcreations.com and we’ll pull it.
Political Contributions
These figures cover the 100 most recent federal contributions on file, not the full record. The total, party split, top recipients and dates below are all computed over that sample, so each is a floor rather than a complete figure.
By Party (in the sample)
Top Recipients (in the sample)
Matched by name only. These are the donations the FEC lists under this person’s name — so a different person with the same name can show up here too.
SEC Filings
Associated Companies
Entities appearing alongside this person in SEC full-text search — an association, not necessarily ownership or control. Follow each link to the primary SEC record to judge for yourself.
Recent Insider Filings
Score Breakdown
The PBS is a weighted average of 2 components. The formula is open and versioned — the weight percentages below show how much each component contributes to the final score.
Evidenced charitable giving — built on what they actually give each year, not parked assets. Dominated by generosity (annual giving relative to net worth — the share of your fortune you give), plus the absolute scale of that giving, plus a small nudge for signing the Giving Pledge (a commitment, not a realized action).
Data: ProPublica 990 charitable disbursements, net worth, The Giving Pledge registry
How much sourced, public accountability data exists — net worth, political contributions, SEC filings, foundation 990s, news coverage, and a verified profile. More public disclosure scores higher.
Data: FEC, SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): PBS = 65% x Philanthropy + 35% x Transparency
Scored on 8/31/2026 on a 0–100 scale. The score uses only the signals we have populated data for. Goal Impact, Controversy, and Community Approval are deferred until that data exists — Phase 1 goal adoption, controversy detection, and community votes respectively.
All data is sourced from public records. Each section links to its original source.