Skip to content
McMahon Foundation at a glance

· Private foundation

McMahon Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$2.8M
Granted FY2025still arriving
27
Grants FY2025still arriving
1
States reached
$540k
Largest
01What it fundsRead
02The needRead
03Its granteesRead
04Its fieldRead
05Through PlinthRead
01What it funds
0198% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2025.

Education$7.5MHealth$2.6MArts & Culture$2.5MFood & Nutrition$1.9MRecreation & Sports$1.5MHuman Services$1.2MCommunity Improvement$971kScience & Tech$795kOther$0
02FY2025 · 27 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k4 grants · $26k
  • $10k–50k11 grants · $207k
  • $50k–250k9 grants · $1.0M
  • $250k+3 grants · $1.6M
$26,000
Median grant
1
States reached
$49M
Total assets
Largest grants
RecipientAmount
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
02The need
03

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Its 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 its grants land in higher-need ZIPs.

area typical 15%INFANT CRISIS SERVICES: $10k → 16%INFANT CRISIS SERVICES: $10k → 16%INFANT CRISIS SERVICES: $10k → 16%INFANT CRISIS SERVICES: $5k → 16%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

82%of every dollar goes to organizations it has funded before.
$18M · 41 repeat orgs$3.9M to everyone else

Grantees it renews have grown median revenue +28% since the first grant, against 0% for those 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

Re-uppedFunded once

Organizations

41
41

Total granted

$18M
$3.6M

Median revenue growth · since first grant

+28%
0%

Still filing today

41%
27%

New vs renewed · share of each year

In FY2025, 88% of grant dollars renewed an existing relationship; $326k went to new ones.

50%100%’18’19’20’21’22’23’24’25
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’18’19’20’21’22’23’24’25
Arts & CultureEducationCommunity ImprovementHealthPhilanthropyReligionOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). 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

  • MA
    MCMAHON AUDITORIUM AUTHORITY
    7× · 2018–2025 · $1.1M · revenue +227% · 96% of their budget
  • CU
    Cameron University Foundation Inc
    2× · 2018–2019 · $495k · revenue +43%
  • OS
    Oklahoma State University Foundation
    3× · 2020–2025 · $337k · revenue +63%

Funded once

  • QO
    QUEST OF OKLAHOMA INC
    one grant, 2024 · $550k · revenue 0%
  • MO
    MUSEUM OF THE GREAT PLAINS
    one grant, 2023 · $500k
  • CF
    CCMH FOUNDATION
    one grant, 2023 · $485k
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its field

Closest unfunded matches

The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.

1
Oklahoma Newspaper Foundation
Arts & Culture
2
Oklahoma Library Association

Strengthen the quality of libraries, library services, and librarianship in oklahoma

—
3
Oklahoma Academy for State Goals

To provide information to citizens. The organization encourages the utilization and developement of the State of Oklahomas resourses.

—
4
Preservation Oklahoma Inc

To preserve the places where Oklahoma history lives.

—
5
Oklahoma Arts Institute Foundation

To support, promote, and improve the programs and services of the oklahoma arts institute.

Arts & Culture
6
Lawton Fort Sill Chamber of Commerce

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…

—
7
Oklahoma State Chamber of Commerce and Industry Inc

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.

—
8
The Academies of Oklahoma Inc

Operation of a charter school in a rural community

Education
9
Oklahoma Assistive Technology Foundation

To assist persons with disabilities in obtaining assistive technology so they can become independent and productive members of the community.

Human Services
10
Oklahoma Indian Legal Services Inc

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…

Crime & Legal
11
Oklahoma Farm Bureau Foundation for Agriculture

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…

Education
12
Oklahoma Workforce and Citizens of Tomorrow Coalitioninc

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.

—
How this is measured
The grantee most central to the portfolio’s shape is University of Oklahoma Foundation Inc; 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.
04the grantee network

29 grantees tracked through their own filings, 2017–2026.

Each grant beside the grantee’s revenue from every source, year by year.

How this is measured

Counted here: distinct organizations funded across 2017 to 2026, 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.

Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.

6
Load-bearing (≥25% of a budget)
8
Early backer (in before they grew)
29/29
Grantees still filing
15/29
Grew since first funded

Where the money sits, by cause and then by grantee

CAMERON UNIVERSITY: $3,324,911 · OtherCAMERON UNIVERSITYLAWTON PUBLIC SCHOOLS FOUNDATION: $1,253,500 · OtherLAWTON PUBLIC SCHOOLS FOUNDATIONFARMERS MARKET INSTITUTE: $1,250,000 · OtherFARMERS MARKET INSTITUTEGREAT PLAINS TECH CENTER FOUND: $1,195,000 · OtherGREAT PLAINS TECH CENTER FOUNDHEARTS THAT CARE: $1,097,000 · OtherHEARTS THAT CARECOMANCHE COUNTY MEM HOSPITAL FOUND: $650,000 · OtherWICHITA MTNS EASTER SUNRISE SVC: $587,939 · OtherGREAT PLAINS TECHNOLOGY CENTER: $575,000 · Other+67 more: $6,376,509 · Other+67 moreUNIVERSITY OF OKLAHOMA FOUNDATION INC: $1,932,846 · EducationUNIVERSITY OF …Cameron University Foundation Inc: $495,000 · EducationCameron Univer…Oklahoma State University Foundation: $337,000 · EducationOklahoma State…LAWTON ROTARY LEADERSHIP INSTITUTE: $156,500 · EducationLAWTON ROTARY …MCMAHON AUDITORIUM AUTHORITY: $1,088,400 · Arts & CultureARTS FOR ALL INC: $245,952 · Arts & CultureHISTORICAL ASSOC OF THE LAWTON RANGERS INC: $50,000 · Arts & Culture+2 more: $43,500 · Arts & CultureQUEST OF OKLAHOMA INC: $550,000 · ReligionLAWTON ENHANCEMENT TRUST AUTHORITY: $544,850 · Community Improvement+1 more: $3,000 · Community ImprovementHOLIDAY IN THE PARK: $207,235 · Recreation & SportsTeen Court Inc: $200,300 · Crime & Legal
Other$16,309,859Education$2,921,346Arts & Culture$1,427,852Religion$550,000Community Improvement$547,850Recreation & Sports$207,235Crime & Legal$200,300

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetUNIVERSITY OF OKLAHOMA FOUNDATION INC: $1,932,846 over 7y, 0.2% of budgetMCMAHON AUDITORIUM AUTHORITY: $1,088,400 over 7y, 96% of budgetQUEST OF OKLAHOMA INC: $550,000 over 1y, 15% of budgetLAWTON ENHANCEMENT TRUST AUTHORITY: $544,850 over 4y, 39% of budgetCameron University Foundation Inc: $495,000 over 2y, 20% of budgetOklahoma State University Foundation: $337,000 over 3y, 0.1% of budgetLAWTON PHILHARMONIC SOCIETY INC: $291,382 over 8y, 22% of budgetRed Rock Military Services: $250,000 over 1y, 5.3% of budgetARTS FOR ALL INC: $245,952 over 7y, 36% of budgetHOLIDAY IN THE PARK: $207,235 over 2y, 31% of budgetTeen Court Inc: $200,300 over 2y, 5.5% of budgetLAWTON ROTARY LEADERSHIP INSTITUTE: $156,500 over 3y, 51% of budgetLawton Heritage Association Inc: $140,000 over 1y, 66% of budgetLEADERSHIP OKLAHOMA INC: $66,000 over 4y, 2.8% of budgetLAWTON MOBILE MEALS INC: $64,440 over 6y, 20% of budgetGreat Plains Technology Foundation Inc: $60,000 over 1y, 21% of budgetHISTORICAL ASSOC OF THE LAWTON RANGERS INC: $50,000 over 1y, 14% of budgetOKLAHOMA DENTAL FOUNDATION: $50,000 over 1y, 1.1% of budgetCenter for Creative Living: $42,870 over 4y, 6.7% of budgetINFANT CRISIS SERVICES INC: $35,000 over 4y, 0.3% of budgetCHISHOLM TRAIL HERITAGE CENTER ASSOCIATION: $28,500 over 3y, 3.9% of budgetGirl Scouts Western Oklahoma Inc: $25,000 over 1y, 0.4% of budgetON THE CHISHOLM TRAIL ASSOCIATION: $19,000 over 2y, 1.8% of budgetOKLAHOMA ARTS INSTITUTE INC: $15,000 over 3y, 0.5% of budgetGREAT PLAINS IMPROVEMENT FOUNDATION: $6,600 over 1y, 0.2% of budgetFRIENDS OF THE LAWTON PUBLIC LIBRARY INC: $5,000 over 1y, 11% of budgetTHE FISTA FOUNDATION: $3,000 over 1y, 0.7% of budgetBRENDON MCLARTY MEMORIAL FOUNDATION: $2,150 over 1y, 1.5% of budget
Grantee by grantee: a decade per organization, before and after funding

A decade per grantee: revenue shaded, 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 ↗

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Arvest FoundationLawton Community Foun…The Priddy FoundationSarkeys FoundationAmerican Fidelity Fou…Communities Foundatio…Oklahoma City Communi…Leslie Powell Foundat…United Way of Southwe…Avedis FoundationThe Merrick FoundationOne Gas Foundation Inc
Arvest FoundationAR26.5× affinity11 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

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

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

How much its grantees rely on government

Each dot is one organization McMahon Foundation funds: left to right is the share of its income from government, bottom to top the share from McMahon Foundation. Bigger dots raise more.

2024
’20’21’22’23’24’25
no gov · 160%6%25%56%100%funder's share of their income ↑0%3%5%8%10%share of the org’s income from government →median 1%
  • Quest of Oklahoma Inc: 1% of income from government
  • Oklahoma Arts Institute Inc: 1% of income from government
no gov moneyreceives it· size = income
16get no government money at all
11report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–10%
typical government reliance, FY20–25
How this is measured
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 a grant caused the public funding. Coverage is precision-first, a floor rather than 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 to 24 months.
05Through Plinth

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.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 89 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on McMahon’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home