· Private foundation
The Harold Hamm Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2021–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k6 grants · $12k
- $10k–50k2 grants · $40k
- $250k+2 grants · $4.5M
| Recipient | Amount |
|---|---|
| OU FOUNDATION | $3,988,990 |
| AMERICA FIRST POLICY INSTITUTE | $497,467 |
| HORATIO ALGER ASSOCIATION | $30,000 |
| PENFED FOUNDATION | $10,000 |
| INFANT CRISIS SERVICES INC | $5,000 |
| YWCA OKLAHOMA CITY | $5,000 |
| OKLAHOMA HALL OF FAME | $1,000 |
| SOONERS HELPING SOONERS INC | $1,000 |
| ENID PUBLIC SCHOOL FOUNDATION | $250 |
| NICHOLA HILLS PARKS INC | $100 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your human-services grants (FY21–25, $65k) land where the poverty rate runs at 16%, against an area that typically sits at 11%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 51% of The Harold Hamm Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 77% of the giving stays in OK; read by stated purpose it is 26% — less of the work is directed home than the recipients' locations suggest.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
15 repeat relationships — 7 still active in FY2025, 8 since wound down; 3 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 89% of grant dollars renewed an existing relationship; $503k went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). The earliest year is left-censored: relationships that predate the data read as “new.” Theme is the grantee’s IRS cause.
Backed again, and grew
- OSOklahoma State University Foundation2× · 2022–2024 · $25M · revenue +8%
- PTPOSITIVE TOMORROWS INC2× · 2022–2023 · $7k · revenue +17%
- NHNICHOLS HILLS PARKS INC5× · 2021–2025 · $7k · revenue +11%
Funded once
- UOUniversity of Maryone grant, 2022 · $10M · revenue +8%
- UOUNIVERSITY OF OKLAHOMA FDone grant, 2024 · $1.4M
- NCNATIONAL COWBOY HALL OF FAMEone grant, 2024 · $1.0M
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
To promote the flourishing of the people of oklahoma by advancing principles and policies that support free enterprise, limited government, personal responsibility, and individual initiative.
The State Chamber is a statewide membership organization. Our purpose is to be the unified voice of business and the most effective advocacy organization at the State Capitol.
United way of central oklahoma is committed to connecting people and resources to improve the well being of those in our community.
True to our christian heritage, we prepare students from diverse religious, cultural, educational and economic backgrounds to live life fully.
Leadership oklahoma was organized to create, inspire, and support a dynamic network of leaders whose increased awareness and commitement to service will energize oklahomans to shape oklahoma's future.
Goodwill empowers people to reach their full potential through work opportunities, training, and support services.
Okaloosa habitat for humanity is a non-profit, christian organization dedicated to eliminating substandard housing in okaloosa county. we provide opportunites for the community to show god's love in action. through partnership with people…
To provide a statewide voice for children by enhancing & sustaining the growth of local casa programs which provide trained community volunteers to represent the best interests of abused & neglected children.
Inspired by a culture of creativity, Oklahoma City University fosters an immersive, personalized experience that welcomes and prepares students to pursue boundless opportunities.
OKC Beautiful's mission is to lead beautification and environmental stewardship through collaboration, education and advocacy. We have been doing this for over 50 years through volunteers and contributing donors. This directly impacts the…
As a christian university, we provide education and research opportunities preparing global leaders to partner with local communities.
The tulsa area united way unites people and resources to improve lives and strengthen our communities.
For reference, the grantee most central to the portfolio’s shape is Oklahoma State University Foundation and the most unlike its peers is University of Mary. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
21 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 21 of the 42 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds Oklahoma State University Foundation ↗
- Who funds University of Mary ↗
- Who funds UNIVERSITY OF OKLAHOMA FOUNDATION INC ↗
- Who funds AMERICA FIRST POLICY INSTITUTE INC ↗
- Who funds FRIENDS OF THE MANSION INC ↗
- Who funds INSTITUTE FOR CITIZEN FOCUSED SERVICE ↗
- Who funds HORATIO ALGER ASSN OF DISTINGUISHED AMERICANS INC ↗
- Who funds Jesus House Inc ↗
- Who funds YOUNG WOMENS CHRISTIAN ASSOCIATION OF OKLAHOMA CI ↗
- Who funds Ronald McDonald House Charities of Tulsa ↗
- Who funds INFANT CRISIS SERVICES INC ↗
- Who funds POSITIVE TOMORROWS INC ↗
- Who funds NICHOLS HILLS PARKS INC ↗
- Who funds OKLAHOMA BAPTIST HOMES FOR CHILDREN INC ↗
- Who funds THE HOMELESS ALLIANCE INC ↗
- Who funds THE DENNY PRICE FAMILY YMCA OF ENID OKLAHOMA INC ↗
- Who funds OKLAHOMA HALL OF FAME ↗
- Who funds A CHANCE TO CHANGE FOUNDATION ↗
- Who funds REGIONAL FOOD BANK OF OKLAHOMA INC ↗
- Who funds SOONERS HELPING SOONERS INC ↗
- Who funds ENID PUBLIC SCHOOL FOUNDATION INC ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: El and Thelma Gaylord Foundation · Oklahoma City Community Foundation Inc · Sarkeys Foundation · Servant Foundation · Rainbolt Family Foundation · The Merrick Foundation · Harris Foundation Inc · American Fidelity Foundation · Inasmuch Foundation · Dobson Family Foundation · Presbyterian Health Foundation · Fred Jones Family Foundation
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization The Harold Hamm Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
Government income is each org’s traced federal awards (USASpending — grants and contracts) plus state payments (open checkbooks) as a share of its total revenue (IRS Form 990); the self-reported government-grant line (990 line 1e) is carried for cross-check: a grantee that reports government grants we could not trace to a source is left off the chart rather than shown as receiving none. An association, not a claim that your grant caused the public funding. Coverage is precision-first — a floor, not a census; state records exist for 9 states, so a grantee outside them shows no state figure (dimmed) rather than a false zero. Federal award amounts are obligations, which can span years, so a single-year share is indicative. 990 filings lag 12–24 months.
Warm introductions · Powered by PlinthPlus
How do I get to The Harold Hamm Foundation?
Find your warmest path to The Harold Hamm Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.