The Harold Hamm Foundation
Oklahoma City, OK · EIN 46-1256191. Reported 64 grants totalling $48.9M to 47 recipients across tax years 2021-2025. This foundation did not tell the IRS it funds only preselected organizations.
Does this foundation accept applications?
Yes -- on its own tax return. Form 990-PF asks every private foundation whether it makes grants only to organizations it selects itself. Of the 91,758 foundations in our data that made a grant and answered, 78% said yes -- and applying to those is wasted effort. The Harold Hamm Foundation did not check that box on its most recent filing, which puts it in the minority that is at least open to being approached.
How big are its grants?
The median grant is $5,000. Half of everything it gave fell between $1,500 and $30,000; the smallest was $100 and the largest $25.0M. If you are asking for materially more than the top of that range, you are asking the wrong foundation.
Every organization it funded
This is the complete list from its filings, largest first. Recipients are grouped by name and state as they were written on the returns, so an organization entered under two different names appears twice. Years funded is the number of separate tax years in which that name received money.
| Organization | Location | Total received | Grants | Years funded | Last |
|---|---|---|---|---|---|
| Oklahoma State University Foundation | Stillwater, OK | $25.0M | 1 | 1 | 2021 |
| University of Mary | Bismarck, ND | $10.2M | 1 | 1 | 2021 |
| Ou Foundation | Norman, OK | $5,533,329 | 2 | 2 | 2025 |
| University of Ok Foundation | Norman, OK | $4,418,393 | 3 | 2 | 2022 |
| University of Oklahoma Fd | Norman, OK | $1,424,600 | 1 | 1 | 2023 |
| National Cowboy Hall of Fame | Oklahoma City, OK | $1,025,505 | 1 | 1 | 2023 |
| America First Policy Institute | Arlington, VA | $497,467 | 1 | 1 | 2024 |
| Institute for Citizen Focused Service Inc | Alexandria, VA | $125,000 | 1 | 1 | 2021 |
| Mccall's Chapel School | Ada, OK | $95,586 | 1 | 1 | 2025 |
| Friends of the Mason | Oklahoma City, OK | $83,333 | 1 | 1 | 2023 |
| Friends of the Mansion | Oklahoma City, OK | $83,333 | 1 | 1 | 2022 |
| Horatio Alger Assoc for Distinguished Americans | Alexandria, VA | $80,000 | 2 | 1 | 2022 |
| Horatio Alger Association | Alexandria, VA | $30,000 | 1 | 1 | 2024 |
| River City Hope Street | Cedar Park, TX | $30,000 | 1 | 1 | 2025 |
| Clr Community Fd | Oklahoma City, OK | $25,000 | 1 | 1 | 2023 |
| General Assembly and Church of the 1ST Born | Brownsville, OR | $25,000 | 1 | 1 | 2022 |
| Jesus House | Oklahoma City, OK | $25,000 | 1 | 1 | 2023 |
| Turning Point USA | Phoenix, AZ | $25,000 | 1 | 1 | 2025 |
| University of Oklahoma Foundation | Norman, OK | $25,000 | 1 | 1 | 2022 |
| Animal Rescue Foundation | Walnut Creek, CA | $20,000 | 2 | 2 | 2022 |
| Penfed Foundation | Alexandria, VA | $20,000 | 2 | 2 | 2024 |
| YWCA Okc | Oklahoma City, OK | $15,000 | 2 | 2 | 2022 |
| Infant Crisis Services Inc | Oklahoma City, OK | $10,000 | 2 | 2 | 2024 |
| Integris Foundation -Arcadia | Oklahoma City, OK | $10,000 | 2 | 2 | 2022 |
| Stropes Foundation | Racine, WI | $10,000 | 1 | 1 | 2023 |
| Positive Tomorrows | Oklahoma City, OK | $7,000 | 3 | 2 | 2022 |
| Nichols Hills Parks | Nichols Hill, OK | $6,500 | 2 | 2 | 2022 |
| Enid First United Methodist Church | Enid, OK | $5,000 | 1 | 1 | 2021 |
| Infant Crisis Center | Oklahoma City, OK | $5,000 | 1 | 1 | 2021 |
| Oklahoma Baptist Homes for Children | Owasso, OK | $5,000 | 1 | 1 | 2021 |
| OSU Foundation | Stillwater, OK | $5,000 | 1 | 1 | 2023 |
| Ronald Mcdonald House | Edmond, OK | $5,000 | 1 | 1 | 2023 |
| Ronald Mcdonald House Charities | Edmond, OK | $5,000 | 1 | 1 | 2022 |
| Scott and Kim Verplank Fd | Norman, OK | $5,000 | 1 | 1 | 2023 |
| Uco Foundationoklahoma a Schools | Edmond, OK | $5,000 | 1 | 1 | 2021 |
| YWCA Oklahoma City | Oklahoma City, OK | $5,000 | 1 | 1 | 2024 |
| Denny Price Family YWCA | Enid, OK | $4,500 | 3 | 2 | 2023 |
| Lexington Public Schools | Lexington, OK | $3,605 | 1 | 1 | 2023 |
| Oklahoma Hall of Fame | Oklahoma City, OK | $3,000 | 3 | 3 | 2024 |
| Sooners Helping Sooners Inc | Norman, OK | $2,000 | 2 | 2 | 2024 |
| The Denny Price Family YMCA | Enid, OK | $1,500 | 1 | 1 | 2025 |
| Enid Public School Foundation | Enid, OK | $250 | 1 | 1 | 2024 |
| Enid Public Schools | Enid, OK | $250 | 1 | 1 | 2023 |
| Disabled Veterans National Foundation | Millford, NH | $200 | 1 | 1 | 2022 |
| Nichola Hills Parks Inc | Nichols Hills, OK | $100 | 1 | 1 | 2024 |
| Nichols Hills Park | Nichols Hills, OK | $100 | 1 | 1 | 2023 |
| Shs Band Boosters | Shawnee, OK | $100 | 1 | 1 | 2021 |
12 of 47 (26%) received money in more than one year over the 5 years we hold.
Measured the way we measure every foundation -- what share of one year's grantees are funded again the next -- this one retains 19%, across 4 year-to-year transitions. The median foundation retains about 67%, so this one is less consistent than most. This measures how often it paid the same organizations again. It says nothing about whether it would consider a new one.
What the money was for
Taken verbatim from the purpose field of its filings. This is the closest thing to a statement of what this foundation cares about, in its own words.
- Oklahoma State University Foundation
CREATION OF HAMM INSTITUTE AMERICAN ENERGY - University of Mary
TO CONTRIBUTE TOHAMM SCHOOL OF ENGINEERING - University of Ok Foundation
FUNDING OF VARIOUS RESEARCHEXPENDABLE FUNDS FOR DIABETES - University of Oklahoma Fd
FUNDING OF VARIOUS DIABETES RESEARCH - Institute for Citizen Focused Service Inc
WORKING TO IMPROVE PUBLICSECTOR SERVICES TO CITIZENS - Friends of the Mansion
donation to supportthe 1st family residence capital campaign
What kind of organizations it funds
By the activity category the IRS assigns each recipient, for the 29 grants where we could match the recipient to a registered organization. The categories are the IRS's. The match, made from the name and address on the return, is ours.
Giving by year
| Tax year | Grants | Total | Median grant |
|---|---|---|---|
| 2021 | 16 | $37.8M | $5,250 |
| 2022 | 16 | $2,212,129 | $5,000 |
| 2023 | 17 | $2,630,893 | $5,000 |
| 2024 | 10 | $4,538,807 | $5,000 |
| 2025 | 5 | $1,696,425 | $30,000 |
Tax years, not calendar years, and the most recent year is usually incomplete -- filings arrive about a year late, so a low final year means late paperwork rather than a foundation winding down.
Where its money goes
77% of its giving went to organizations in Oklahoma. If your organization is based elsewhere, look in the recipient list for grants to your area before writing.
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Funders that support the same organizations
These funders gave to organizations this one also funded -- some private foundations, some community foundations and other grantmaking charities. Shared grantees are a sign of overlapping priorities and nothing more: they do not show that any of these funders would consider a new organization. Each page says what its filings show.
How to approach this foundation
- Check you are its size. The median grant is $5,000. A request many times that size asks for something it has rarely or never given.
- Check you are in its geography. Its giving is concentrated in Oklahoma.
- Read the recipient list above for organizations like yours. If nothing on it resembles your work, that is a real answer, and a cheap one to get.
- Look up the current filing before writing. The 990-PF names the foundation's officers and, where one exists, its application procedure. We link it below.
Where these numbers come from
Everything above is taken from The Harold Hamm Foundation's own Form 990-PF filings, which the IRS publishes in bulk. We used 5 returns (tax years 2021-2025). Grant figures are from its returns. Matching recipients to registered organizations, their IRS classifications, the retention rate and the funders that support the same organizations are our own calculations, described in how we build this.
Address of record on the latest return: Po Box 1295, Oklahoma City, OK, 73101. This is the address the foundation gave the IRS; many small foundations file through an accountant or a bank trust department, so it may not be where post to a programme officer should go.
EIN 46-1256191 · See the original filings on ProPublica · How we build this
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