William Koch
Profile Summary
William Koch is a U.S.-based energy billionaire associated with Florida, born in 1940. He has an estimated net worth of ~$2.0B. RTB
Philanthropy
Three Koch Foundation filings listed in Iowa, Florida, and Indiana reported combined assets of $111.4M and grants paid of $9.7M in their most recently listed tax years. The Florida Koch Foundation Inc. filing for tax year 2024 reported $71.7M in assets and $6.8M in grants paid; the Indiana filing for 2023 reported $39.8M in assets and $2.9M in grants paid. ProPublica 990
Political Activity
The FEC sample contains at least 100 of Koch's most recent federal contributions, totaling $1,888.37 and covering only records from May 9 through July 30, 2026. Of that sampled total, $1,591.50 was classified as unknown-party, $261.87 as Republican, and $35 as Democratic; the largest listed recipients were ActBlue ($896.75), WinRed ($306.01), Air Products and Chemicals Inc. Political Alliance ($255.74), NRCC ($188.99), and Eaton Public Policy Association ($133). FEC
These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
In the News
A May 28, 2026, New York Post article reported that Bill Koch planned to auction a 52-acre Aspen estate listed at $125M. NewsAPI
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 of 3,623 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)
Every party in this sample is listed here. The bars are rounded for display; unrounded they total exactly $1,888.37.
Top Recipients (in the sample)
Matched by name only. These donations are matched to this person by name only, so some may belong to a different person with the same name: FEC filings can include a donor's employer and city, but our matching does not check them against what we know about this person.
Score Breakdown
The giving score 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 record we hold about this person — net worth, SEC filings, foundation 990s, news coverage, Wikidata. It measures our coverage, not how open the person is. Each further kind of record scores higher, up to eight. Political donation records matched to a person by name alone are not counted: they may belong to someone else with the same name. From October 7, 2026, our own AI-written summary and the profile photo are not counted either — neither is a public record — so grades that leaned on them moved down that day.
Data: SEC EDGAR, ProPublica 990s, GDELT / NewsAPI, Wikidata
Formula (v2): Giving score = 65% x Philanthropy + 35% x Data coverage
Scored on 10/16/2026 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.