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Oklahoma · Private foundation

McMahon Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$2.8M
Granted FY2025(still arriving)
27
Grants FY2025
21
Organizations funded FY2024
43%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$26,000
Largest grant, FY2025
$540,000
Organizations funded a year
21 to 31
FY2018 to FY2024
States reached, FY2025
1
Total assets, FY2025
$49M
Applications
Takes unsolicited applications
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 43% of the organizations McMahon Foundation funded were first-time grantees, receiving 49% of its grant dollars.

New vs renewed · share of each year

In FY2024, 51% of grant dollars renewed an existing relationship; $1.4M went to new ones.

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

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

’19’20’21’22’23’24
Arts & CultureHealthPhilanthropyReligionCommunity ImprovementEducationOther
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.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2025still arriving21$2.8M33%
FY202421$2.8M43%
FY202324$3.2M33%
FY202223$2.8M30%
FY202124$2.7M25%
FY202028$2.7M36%
FY201931$2.7M48%
FY201827$2.5Mn/a
98% 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

Top grantees

Largest recipients by total granted, FY2018 to FY2025, and the share of each one’s budget the grants supplied at peak.

Show all 35 grantees
All grantees of McMahon Foundation by total granted
GranteeTotal grantedYearsShare of their budget
University of Oklahoma Foundation Inc$1,932,84670%
McMahon Auditorium Authority$1,088,400796%
Quest of Oklahoma Inc$550,000115%
Lawton Enhancement Trust Authority$544,850439%
Cameron University Foundation Inc$495,000220%
Oklahoma State University Foundation$337,00030%
Lawton Philharmonic Society Inc$291,382822%
Red Rock Military Services$250,00015%
Arts for All Inc$245,952736%
Holiday in the Park$207,235231%
Teen Court Inc$200,30026%
Little Chapel of Lawton Inc$181,7543n/a
Salvation Army$166,8041n/a
Lawton Rotary Leadership Institute$156,500351%
Lawton Heritage Association Inc$140,000166%
Leadership Oklahoma Inc$66,00043%
Lawton Mobile Meals Inc$64,440620%
Great Plains Technology Foundation Inc$60,000121%
Historical Assoc of the Lawton Rangers Inc$50,000114%
Oklahoma Dental Foundation$50,00011%
Center for Creative Living$42,87047%
Infant Crisis Services Inc$35,00040%
Chisholm Trail Heritage Center Association$28,50034%
Lawton Schubert Music Club$26,0004n/a
Girl Scouts Western Oklahoma Inc$25,00010%
On the Chisholm Trail Association$19,00022%
Oklahoma Arts Institute Inc$15,00031%
Lawton-Ft Sill Art Council$12,6091n/a
Great Plains Improvement Foundation$6,60010%
Parkinson Foundation of Oklahoma$5,0001n/a
Friends of the Lawton Public Library Inc$5,000111%
The Fista Foundation$3,00011%
Brendon McLarty Memorial Foundation$2,15012%
Lawton Pro Musica Inc$1,9001n/a
Lawton Council of the Blind$1,6421n/a

What it could do for these grantees

Plus 54 recipients with no EIN on record ($15M), not named here.

Where it is load-bearing

McMahon Foundation supplied at least a quarter of the budget for 6 of its grantees at some point. The chart plots its 28 largest grantees; load-bearing ones sit top left.

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

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 28.

Nonprofits that may fit its grantmaking

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 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.

Compare McMahon Foundation with peer funders

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.

About McMahon Foundation

How much does McMahon Foundation give?
McMahon Foundation reported 27 grants totaling $2,826,869 in its FY2025 IRS filing. It funded between 21 and 31 organizations a year over FY2018 to FY2024.
What does McMahon Foundation fund?
By grant dollars over FY2018 to FY2025, its largest causes are Education (34%), Health (12%), Arts & Culture (11%).
Who are McMahon Foundation's largest grantees?
By total granted over FY2018 to FY2025: University of Oklahoma Foundation Inc ($1.9M), McMahon Auditorium Authority ($1.1M), Quest of Oklahoma Inc ($550k).
Does McMahon Foundation fund new organizations?
In FY2024, 43% of the organizations it funded were first-time grantees.
Does McMahon Foundation accept unsolicited applications?
Its most recent filing reports that it accepts unsolicited grant applications.
Which funders back the same organizations as McMahon Foundation?
Its strongest co-funders, measured against what their size predicts, include Arvest Foundation, Lawton Community Foundation Affiliated Fund of the Occf Inc, The Priddy Foundation.
Where is McMahon Foundation based?
McMahon Foundation is based in OK.

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

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