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Montana · Private foundation

William and Lorene Nefsy Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$83k
Granted FY2025(still arriving)
8
Grants FY2025
14
Organizations funded FY2024
79%
First-time grantees FY2024
Read the full brief
Median grant, FY2025
$12,000
Largest grant, FY2025
$20,000
Organizations funded a year
6 to 16
FY2018 to FY2024
States reached, FY2025
1
Total assets, FY2025
$1.6M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2024, 79% of the organizations William and Lorene Nefsy Foundation funded were first-time grantees, receiving 78% of its grant dollars.

New vs renewed · share of each year

In FY2024, 22% of grant dollars renewed an existing relationship; $65k went to new ones.

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

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

’18’19’20’21’22’23’24
Recreation & SportsEducationHealthHuman ServicesYouth DevelopmentPublic Safety & DisasterOther
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 arriving8$83k88%
FY202414$83k79%
FY202310$83k80%
FY202216$83k94%
FY20216$74k83%
FY202011$72k82%
FY201911$74k91%
FY20186$82k83%
97% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2025.

Recreation & Sports$428kEducation$140kPhilanthropy$31kYouth Development$29kArts & Culture$21kPublic Safety & Disaster$16kHealth$13kCivil Rights$10kOther$0

Top grantees

Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.

GranteeTotal grantedYearsShare of their budget
Bozeman Sports Park Foundation Inc$62,75027%
Miles Community College$50,0001n/a
Montana Center for Horsemanship Inc$30,0001n/a
Waterworks Art Museum$17,50072%
Billings Catholic Schools Foundation$14,50020%
Pondera Rec Association$12,50018%
Fergus Wrestling Club Inc$12,0001n/a
Wildhorse Sports Association$11,500123%
Bigfork Youth Baseball Association$10,2681n/a
Eagle Mount Billings$8,73812%
Show all 28 grantees
All grantees of William and Lorene Nefsy Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Bozeman Sports Park Foundation Inc$62,75027%
Miles Community College$50,0001n/a
Montana Center for Horsemanship Inc$30,0001n/a
Waterworks Art Museum$17,50072%
Billings Catholic Schools Foundation$14,50020%
Pondera Rec Association$12,50018%
Fergus Wrestling Club Inc$12,0001n/a
Wildhorse Sports Association$11,500123%
Bigfork Youth Baseball Association$10,2681n/a
Eagle Mount Billings$8,73812%
Barrett Hospital Foundation Inc$7,50012%
Missoula County Public Schools$7,5001n/a
Miles City Youth Hockey Association$6,60012%
Miles City Youth Baseball Association$6,50014%
Bozeman School District #7$6,5001n/a
Richland County Adult Softball Association$5,9702n/a
Belgrade Community Library Foundation$5,00013%
Pondera Healthcare Foundation$5,0001n/a
Billings Christian Schools Inc$5,00010%
Sidney Tiger Sharks Inc$5,0001n/a
Huntley Project Development Assn$5,0001n/a
The University of Montana Foundation$4,00010%
Bear Paw Volunteer Fire Department$2,88712%
Wibaux Public Schools$1,5001n/a
Fair View Foundation$1,500114%
Fallon Village Council$1,0001n/a
Huntley Project Museum$75010%
Miles City Wrestling Club Inc$1251n/a

What it could do for these grantees

Plus 48 recipients with no EIN on record ($416k), not named here.

Where it is load-bearing

Each grantee by its size and the share of its budget William and Lorene Nefsy Foundation supplied at peak.

25%50%75%100%$1.0M$10Mgrantee revenue →↑ funder's share of their budgetBozeman Sports Park Foundation Inc: $62,750 over 2y, 7.4% of budgetWaterworks Art Museum: $17,500 over 7y, 1.8% of budgetBillings Catholic Schools Foundation: $14,500 over 2y, 0.3% of budgetPondera Rec Association: $12,500 over 1y, 7.7% of budgetWildhorse Sports Association: $11,500 over 1y, 23% of budgetEagle Mount Billings: $8,738 over 1y, 1.5% of budgetBarrett Hospital Foundation Inc: $7,500 over 1y, 1.7% of budgetMiles City Youth Hockey Association: $6,600 over 1y, 2.4% of budgetMiles City Youth Baseball Association: $6,500 over 1y, 4.0% of budgetBelgrade Community Library Foundation: $5,000 over 1y, 2.8% of budgetBillings Christian Schools Inc: $5,000 over 1y, 0.3% of budgetThe University of Montana Foundation: $4,000 over 1y, 0.0% of budgetBear Paw Volunteer Fire Department: $2,887 over 1y, 2.1% of budgetFair View Foundation: $1,500 over 1y, 14% of budgetHuntley Project Museum: $750 over 1y, 0.4% 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 15.

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.

Town Pump Charitable FoundationMT21.3× affinity8 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Town Pump Charitable Foundation · Montana Community Foundation Inc · First Interstate BancSystem Foundation Inc · Albert & E Bender Foundation Inc · Gianforte Family Charitable Trust · Dennis & Phyllis Washington Foundation · Edward Jones Foundation · National Philanthropic Trust · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund · Amazonsmile Foundation

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 William and Lorene Nefsy Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to William and Lorene Nefsy Foundation?

Find your warmest path to William and Lorene Nefsy 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 William and Lorene Nefsy Foundation

How much does William and Lorene Nefsy Foundation give?
William and Lorene Nefsy Foundation reported 8 grants totaling $83,250 in its FY2025 IRS filing. It funded between 6 and 16 organizations a year over FY2018 to FY2024.
What does William and Lorene Nefsy Foundation fund?
By grant dollars over FY2017 to FY2025, its largest causes are Recreation & Sports (59%), Education (19%), Philanthropy (4%).
Who are William and Lorene Nefsy Foundation's largest grantees?
By total granted over FY2017 to FY2025: Bozeman Sports Park Foundation Inc ($63k), Miles Community College ($50k), Montana Center for Horsemanship Inc ($30k).
Does William and Lorene Nefsy Foundation fund new organizations?
In FY2024, 79% of the organizations it funded were first-time grantees.
Does William and Lorene Nefsy Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as William and Lorene Nefsy Foundation?
Its strongest co-funders, measured against what their size predicts, include Town Pump Charitable Foundation, Montana Community Foundation Inc, First Interstate BancSystem Foundation Inc.
Where is William and Lorene Nefsy Foundation based?
William and Lorene Nefsy Foundation is based in MT.

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 77 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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