· Private foundation
McMahon 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 FY2018–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k4 grants · $26k
- $10k–50k11 grants · $207k
- $50k–250k9 grants · $1.0M
- $250k+3 grants · $1.6M
| Recipient | Amount |
|---|---|
| LAWTON PUBLIC SCHOOLS FOUNDATION | $540,000 |
| CAMERON UNIVERSITY | $540,000 |
| GREAT PLAINS TECHNOLOGY CENTER | $500,000 |
| SALVATION ARMY | $166,804 |
| TEEN COURT | $145,000 |
| LITTLE CHAPEL OF LAWTON | $131,120 |
| UNITED WAY OF LAWTON | $125,000 |
| CAMERON UNIVERSITY | $125,000 |
| OSU FOUNDATION | $100,000 |
| ARTS FOR ALL | $78,660 |
| GREAT PLAINS TECHNOLOGY CENTER FOUN | $75,000 |
| LAWTON PHILHARMONIC SOCIETY | $67,500 |
| TEEN COURT | $27,650 |
| CAMERON UNIVERSITY | $26,000 |
| CROSSROADS YOUTH & FAMILY | $25,000 |
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 (FY22–25, $35k) land where the poverty rate runs at 16%, against an area that typically sits at 15%. 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.
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +29% since the first grant, against 0% for the ones you funded once.
41 repeat relationships — 14 still active in FY2025, 27 since wound down; 7 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, 88% of grant dollars renewed an existing relationship; $326k 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
- MAMCMAHON AUDITORIUM AUTHORITY7× · 2018–2025 · $1.1M · revenue +227% · 96% of their budget
- CUCameron University Foundation Inc2× · 2018–2019 · $495k · revenue +43%
- OSOklahoma State University Foundation3× · 2020–2025 · $337k · revenue +63%
Funded once
- QOQUEST OF OKLAHOMA INCone grant, 2024 · $550k · revenue 0%
- MOMUSEUM OF THE GREAT PLAINSone grant, 2023 · $500k
- CFCCMH FOUNDATIONone grant, 2023 · $485k
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.
Strengthen the quality of libraries, library services, and librarianship in oklahoma
To provide information to citizens. The organization encourages the utilization and developement of the State of Oklahomas resourses.
To preserve the places where Oklahoma history lives.
To support, promote, and improve the programs and services of the oklahoma arts institute.
The chamber is incorporated and organized to promote and advance the commercial, industrial, recreational, agricultural, health, educational, social, and professional activities of the people of the lawton fort sill community. their…
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.
Operation of a charter school in a rural community
To assist persons with disabilities in obtaining assistive technology so they can become independent and productive members of the community.
Oklahoma indian legal services is dedicated to representation where federal indian, tribal and treaty law arise. oils is a nonprofit corporation primarily funded by the legal services corporation (lsc). establisehd in 1981, its purpose is…
We strive to educate consumers about their food and connect them with the people who grow and raise it. We are also proud to support Oklahomans in need, with a focus on using agriculture and our states bounty to provide hope for our fellow…
The purpose of the corporation is to create a coalition of educators and community leaders to develop higher education strategies and studies which will lead to a better workforce in the state of oklahoma.
For reference, the grantee most central to the portfolio’s shape is University of Oklahoma Foundation Inc and the most unlike its peers is On the Chisholm Trail Association. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 35 years old; the field is 14. You back the established end — and your money leans older still.
The field is 23% startups (under 5 years old) — 4% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 14% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
29 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. 29 of the 89 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 UNIVERSITY OF OKLAHOMA FOUNDATION INC ↗
- Who funds MCMAHON AUDITORIUM AUTHORITY ↗
- Who funds QUEST OF OKLAHOMA INC ↗
- Who funds LAWTON ENHANCEMENT TRUST AUTHORITY ↗
- Who funds Cameron University Foundation Inc ↗
- Who funds Oklahoma State University Foundation ↗
- Who funds LAWTON PHILHARMONIC SOCIETY INC ↗
- Who funds Red Rock Military Services ↗
- Who funds ARTS FOR ALL INC ↗
- Who funds HOLIDAY IN THE PARK ↗
- Who funds Teen Court Inc ↗
- Who funds LAWTON ROTARY LEADERSHIP INSTITUTE ↗
- Who funds Lawton Heritage Association 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: Arvest Foundation · Lawton Community Foundation Affiliated Fund of the Occf Inc · The Priddy Foundation · Sarkeys Foundation · American Fidelity Foundation · Communities Foundation of Oklahoma · Oklahoma City Community Foundation Inc · Leslie Powell Foundation Inc · United Way of Southwest Oklahoma · Avedis Foundation · The Merrick Foundation · One Gas Foundation Inc
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 McMahon 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.
- Quest of Oklahoma Inc — 1% of income from government
- Oklahoma Arts Institute Inc — 1% of income from government
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 McMahon Foundation?
Find your warmest path to McMahon 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.