William Koch
Profile Summary
William Koch is a U.S. billionaire in the energy industry, born in 1940 and based in Florida. His estimated net worth is ~$2.0B RTB. The data provided does not include a detailed business history, but it identifies him as an energy-sector billionaire and shows recent public attention around a planned auction of his Aspen estate NewsAPI.
Philanthropy
Koch-linked foundations reported $9,747,795 in grants paid across the available filings, with total foundation assets of $111,448,122 ProPublica 990. The Florida-based Koch Foundation Inc. reported $6,835,631 in grants paid in tax year 2024 and $71,661,279 in assets, while the Indiana-based Koch Foundation Inc. reported $2,897,162 in grants paid in tax year 2023 and $39,777,311 in assets ProPublica 990.
Political Activity
Federal Election Commission records show 100 contributions totaling $2,379.24 during 2025-05-01 to 2025-12-31 FEC. The largest listed recipients were ACTBLUE, Dan Tully for Congress, and Elissa Slotkin for Michigan, and the party breakdown shows $780 to Democrats, $9.50 to Republicans, and $1,589.74 to Unknown FEC.
In the News
Recent coverage reported that Bill Koch planned to auction his $125 million, 52-acre Aspen estate NewsAPI. The available news data is limited to this real-estate item and does not add further business or political details NewsAPI.
U.S. Presence
Philanthropy
Political Contributions
By Party
Top Recipients
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.