David Koch
American billionaire heir and businessman (1940–2019)
Source: Wikidata — retrieved 8/30/2026 (wikidata)
Profile Summary
David Koch (1940–2019) was an American billionaire heir and businessman. His estimated net worth was ~$50.5 billion. Wikidata
Business & SEC Activity
SEC records identify David Koch as an insider associated with Boomerang Systems, Inc., a company with no ticker listed in the data. The records show eight insider filings: one Form 3, which reports initial insider ownership, and seven Form 4 filings, which report subsequent ownership changes, dated from April 2012 through April 2014. SEC EDGAR
Philanthropy
Three Koch foundations reported combined assets of $111,448,122 and $9,747,795 in grants paid across the listed tax years. The foundations were based in Iowa, Florida, and Indiana, with the Florida foundation reporting the largest assets at $71,661,279 in 2024. ProPublica 990
Political Activity
The available records contain at least 100 federal contributions; the figures below cover only the most recent 100 records and do not represent Koch's full contribution history. Those sampled contributions totaled $2,019.24, including $40 to Democratic recipients, $29.75 to Republican recipients, and $1,570.25 to PACs or other recipients; the largest listed recipient was ActBlue at $751.87. 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. View on Wikidata