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Harold Hamm
American businessman
OklahomaEnergyGiving Pledge
B
50.8
PBS
~$12.7B
Est. Net Worth
Source: Wikidata — retrieved 7/12/2026 (wikidata)
Source: Wikidata — retrieved 7/12/2026 (wikidata)
Profile Summary
Harold Hamm is an American businessman in the energy industry based in Oklahoma, born in 1945, with an estimated net worth of ~$12.7B. SEC records show he is associated with Continental Resources, Inc. and has a personal SEC CIK (0001316481) with 133 insider-related filings. Recent news coverage in March 2026 linked him to discussions about a potential U.S. Senate appointment in Oklahoma. Wikidata SEC EDGAR NewsAPI
Business & SEC Activity
SEC EDGAR links Hamm to Continental Resources, Inc. (CIK 0000732834) and lists additional related entities including Harold Hamm Family LLC (CIK 0001648709). His SEC history includes 133 insider filings, with recent examples including Form 4 filings (which disclose insider stock transactions) and SC 13D/A amendments (which update disclosures about large ownership stakes or related changes). The most recent listed filings include multiple Form 4 and SC 13D/A submissions in 2021–2022. SEC EDGAR
Philanthropy
ProPublica nonprofit filings list three foundations connected by name: the Harold Hamm Foundation (OK, tax year 2024), the Mia Hamm Foundation (NC, tax year 2024), and Hamm Foundation Inc (KS, tax year 2023). Across these filings, total foundation assets were $11,382,256 and total grants paid were reported as $0; the Harold Hamm Foundation alone reported $11,084,019 in assets with $0 grants paid in 2024. In the same year, the Harold Hamm Foundation reported $162,896 in revenue and $2,083,292 in total expenses. ProPublica 990
Political Activity
Federal Election Commission data shows 100 contributions totaling $152,635.51 from 2024-10-05 to 2025-12-08. The party breakdown reported $87,473.69 to Republican recipients, $220 to Democratic recipients, and $64,941.82 to PAC/Other. The top listed recipients were TRUMP 47 COMMITTEE, INC. ($50,000), NRSC ($15,000), and several state Republican committees at $10,000 each (New Hampshire, Iowa, and North Carolina). FEC
In the News
In March 2026, multiple outlets reported on who could run to replace Sen. Markwayne Mullin if nominated for a DHS role, with Hamm mentioned among names discussed. Oklahoma Gazette reported that Hamm asked Oklahoma Gov. Kevin Stitt for a Senate appointment. Another March 2026 item circulated a notice of a class action related to Continental Resources, Inc. common stock for a specified 2022 period. NewsAPI
U.S. Presence
otherU.S. economic presence
Philanthropy
$11.4MFoundation Assets
$2.9MGrants Paid
3Foundations
Harold Hamm FoundationOklahoma City, OK
Corporate foundation (IRS NTEE T21)
Assets: $11.1MRevenue: $163KGrants: $2.6MTax Year: 2024
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerMia Hamm FoundationChapel Hill, NC
Private grantmaking foundation (IRS NTEE T20)
Assets: $209KRevenue: $139KGrants: $151KTax Year: 2024
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerHamm Foundation IncPerry, KS
Public foundation (IRS NTEE T30)
Assets: $89KRevenue: $51KGrants: $68KTax Year: 2023
Mission, purpose & full 990 filings → ProPublica Nonprofit ExplorerPolitical Contributions
$153KTotal Contributed
100Contributions
2024–2025Date Range
By Party
Top Recipients
TRUMP 47 COMMITTEE, INC.$50K
NRSC$15K
NEW HAMPSHIRE REPUBLICAN STATE COMMITTEE$10K
REPUBLICAN PARTY OF IOWA$10K
NORTH CAROLINA REPUBLICAN PARTY$10K
SEC Filings
133Total Filings
133Insider Filings
425EDGAR Mentions
0001316481Personal CIK
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
4FORM 4 SUBMISSION
11/22/2022SC 13D/ASC 13D/A
11/22/2022SC 13D/ASC 13D/A
10/19/2022SC 13D/ASC 13D/A
6/15/20224FORM 4 SUBMISSION
5/19/20224FORM 4 SUBMISSION
3/9/20224FORM 4 SUBMISSION
2/15/2022SC 13D/ASC 13D/A
2/14/2022SC 13D/ASC 13D/A
2/9/20224FORM 4 SUBMISSION
12/7/2021Recent News
51Total Articles
YahooTop Source
NeutralAvg. Sentiment
Score Breakdown
B
50.8
Public Benefit Score
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.
Philanthropy65% weight
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
Transparency35% weight
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. View on Wikidata