Thomas Duff
Profile Summary
Thomas Duff is a Mississippi-based U.S. billionaire born in 1956 with an estimated net worth of ~$4.5B RTB. He is identified in SEC records as Thomas Milton Duff and has filings tied to Frozen Food Express Industries Inc. SEC EDGAR.
Business & SEC Activity
SEC records show 16 filings connected to Thomas Milton Duff, including 6 insider-related filings SEC EDGAR. The recent filings include a Form 3 and multiple Schedule 13D/13D-A filings; a Form 3 is the initial statement of beneficial ownership, and Schedule 13D reports when someone acquires more than 5% of a company SEC EDGAR.
Philanthropy
Three Duff-related foundations reported total grants paid of $254,032 and total assets of $1,141,310 across the available tax years ProPublica 990. The largest reported foundation asset base in the data is the Duff Family Foundation in Mississippi, with $917,577 in assets in tax year 2023 ProPublica 990.
Political Activity
FEC records show 100 contributions totaling $31,949.91 in the listed period FEC. Most of the money went to Republican recipients: $30,000 to Republican committees and $1,535.83 to PAC/other recipients, while Democratic recipients received $150 FEC.
U.S. Presence
Philanthropy
Political Contributions
By Party
Top Recipients
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 6/23/2026 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.