Harold Hamm
American businessman
Source: Wikidata — retrieved 10/11/2026 (wikidata)Dispute
Profile Summary
A net worth stated in this summary may be out of date.
Harold Hamm is an American businessman in the energy industry, based in Oklahoma. He has an estimated net worth of ~$12.7B Wikidata.
Business & SEC Activity
SEC EDGAR lists 133 insider filings associated with Hamm, including filings connected to Continental Resources, Inc. SEC EDGAR Recent filings include Form 4 submissions, which disclose insiders’ transactions in a company’s securities, and Schedule 13D/A amendments, which update prior reports of significant ownership stakes SEC EDGAR.
Philanthropy
Three foundations bearing the Hamm name reported combined assets of $11,392,856 and grants paid of $2,715,475 in their listed tax years. The Harold Hamm Foundation, based in Oklahoma City, reported $11,084,019 in assets and $2,635,638 in grants paid for 2024 ProPublica 990. Hamm is a signatory to the Giving Pledge RTB.
Political Activity
FEC records show at least 100 federal contributions; the figures below cover only the most recent 100 contributions on file, dated October 25, 2024 through July 8, 2026, totaling $155,586.39 FEC. Those sampled contributions included $79,893.69 to Republican recipients, $2,195 to Democratic recipients, and $73,497.70 categorized as Unknown FEC. The largest listed recipients in the sample were Trump 47 Committee Inc. ($50,000), the New Hampshire Republican State Committee ($10,000), the Republican Party of Iowa ($10,000), the North Carolina Republican Party ($10,000), and the Illinois Republican Party—Federal ($9,400) 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
An August 2026 OilPrice.com article reported that Hamm was increasing his bet on Argentina’s Vaca Muerta shale development NewsAPI. A June 2026 News 9 article reported that he endorsed Chip Keating in Oklahoma’s governor’s race, while Forbes listed Hamm among people recognized at its Self-Made 250 event 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 1,159 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 $155,586.39.
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.
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 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. View on Wikidata