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Florida · Nonprofit

THE NATHAN B STUBBLEFIELD FOUNDATION INC

THE NATHAN B STUBBLEFIELD FOUNDATION INC (Florida) receives grants from 31 organizations whose IRS filings report $1,728,709 to it, the largest being CORPORATION FOR PUBLIC BROADCASTING ($1,385,685). 12 of them have funded it in more than one year.

Revenue FY2025
$2.0M
Funders on record
31
Grants received
$1.7M
Net assets
$2.9M
12/31 repeat funderspeak grant-dependency 17%
01What it does

What The Nathan B Stubblefield Foundation Inc does

Mission

Wmnf is a non-commerical, listener supported community radio station that provides a platform for diverse voices committed to a more just, peaceful, and sustainable world.

As stated on its FY2025 Form 990.

Programs

  1. Production and acquisition of radio programs for community radio - approximately 1000 hours per year.

    $711,461 spent
    57% of program spending

  2. Broadcasting radio programs and community non-commercial programming 24 hours a day.

    $284,703 spent
    23% of program spending

  3. Production of cultural events that bring artists and speakers that have been broadcast in the station's programs.

    $212,893 spent$194,996 earned by the program
    17% of program spending

  4. Providing information on the organization's website about programming and outreach activities.

    $30,325 spent
    2% of program spending

The 4 programs described on its FY2024 Form 990, listed largest first by expense. Program spending in total: $1,239,382.

02The organization over time

The organization over time

Each line starts at 100 in 2017, so what you read is the shape rather than the size: 150 means half as much again as 2017, 50 means half. The number beside each label in the key is where it ended. The shaded band is where the middle 50% of its peers' revenue would sit, given their growth.

100 = 20172017 Revenue 100 ($1.8M) Expenses 100 ($1.6M) Net assets 100 ($2.5M)2018 Revenue 102 ($1.8M) Expenses 108 ($1.8M) Net assets 104 ($2.6M)2019 Revenue 116 ($2.1M) Expenses 111 ($1.8M) Net assets 113 ($2.8M)2020 Revenue 92 ($1.6M) Expenses 104 ($1.7M) Net assets 111 ($2.8M)2021 Revenue 102 ($1.8M) Expenses 99 ($1.6M) Net assets 123 ($3.1M)2022 Revenue 90 ($1.6M) Expenses 98 ($1.6M) Net assets 121 ($3.0M)2023 Revenue 119 ($2.1M) Expenses 117 ($1.9M) Net assets 130 ($3.2M)2024 Revenue 98 ($1.7M) Expenses 129 ($2.1M) Net assets 116 ($2.9M)2025 Revenue 109 ($2.0M) Expenses 127 ($2.1M) Net assets 115 ($2.9M)
'17'18'19'20'21'22'23'24'25
Revenue (109)Expenses (127)Net assets (115)Peer revenue range

Balance sheet

Total assets and total liabilities at each year end, in dollars. The largest one-year move in total assets was 2022 to 2023, from $3.1M to $3.7M (+19%).

$3.0M
$3.0M
$3.0M
$3.1M
$3.2M
$3.1M
$3.7M
$3.2M
$3.1M
'17'18'19'20'21'22'23'24'25
Total assetsTotal liabilities

How it's funded, over time

Each bar is one year's revenue split into where it came from, and every bar is the same height — these are shares, not amounts, so a year that raised twice as much looks the same size. Hover a bar for the split.

2017
2018
2019
2020
2021
2022
2023
2024
2025
ContributionsProgram revenueInvestmentOther

Government-grant reliance: 2021 9% · 2023 21%. Grants only. Government contracts and fees sit inside program revenue.

88% of THE NATHAN B STUBBLEFIELD FOUNDATION INC’s revenue is contributions — more donation-reliant than the typical peer (63% for the typical peer).

This organization
Typical peer · 5,395 orgs

Surplus & reserves

Operating surplus or deficit each year, and months of liquidity in hand. 3 of the last 9 reported years ran a deficit.

$162k
’17
$76k
’18
$259k
’19
−$50k
’20
$210k
’21
$16k
’22
$221k
’23
−$359k
’24
−$107k
’25
3.6
months of
reserve

Leadership and staff

The officers, directors, trustees and key employees listed on each return. Joined and no longer listed compare each filing with the year before, matching people by surname and first initial; a year after a gap, or a roster under three people, has no comparison.

'17'18'19'20'21'22'23'24'25
Listed181817181718191616
Joined·+7+5+11+6+2+4+4+7
No longer listed·761071377
03Who funds it

Who funds it, year by year

2017 → 2023: the base broadened from 7 funders to 12 funders, grant income rose $168k → $171k.

Funder
'17
'18
'19
'20
'21
'22
'23
'24*
'25*
'26*
total
Cars for Charity Incunclassified
$6k
funders
7
5
3
8
11
6
12
4
8
2

11 of 31 of your funders are donor-advised or pass-through sponsors (tagged DAF) — 16% of grant dollars received. That money is really individual donors directing a sponsor; the institutions to cultivate are the non-DAF funders.

From the IRS filings of THE NATHAN B STUBBLEFIELD FOUNDATION INC’s funders (the co-funder graph). Top 30 of 31 funders by total. Association, not causation. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.

How concentrated its funding is

THE NATHAN B STUBBLEFIELD FOUNDATION INC leans on a few funders — its largest provides 80% of grant income and the top three 89%; half comes from just 1 funder.

the vertical line marks half of all grant income — 1 funder to its left

99% of the income these shares are computed over arrives through pass-through sponsors or from payers whose filings do not say what kind of payment it is. Concentration is still measured over all of it, because the money is real; what it does not support is a claim about how many institutions have chosen to fund THE NATHAN B STUBBLEFIELD FOUNDATION INC.

80%
largest funder
89%
top three
~2
effective funders

Largest funder’s share by year: 2017 82% · 2018 88% · 2019 97% · 2020 78% · 2021 84% · 2022 69% · 2023 66% — diversifying over time.

“Effective funders” = inverse Herfindahl index (1 / Σ shareᵢ²) — the number of equal-sized funders that would give the same concentration. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.

How long its funders stay

46% of THE NATHAN B STUBBLEFIELD FOUNDATION INC's funders are still giving 3 years after their first grant; 39% give in more than one year at all.

first grant+1y+2y+3y+4y+5y+6y

Share of funders still giving k years after their first recorded grant, pooled across every acquisition cohort. A funder counts as retained in a year only if it made a grant that year. Measured to FY2023, the last fiscal year that has finished arriving — a funder cannot be counted as lapsed in a year most filers have not reached.

Where its funders are

THE NATHAN B STUBBLEFIELD FOUNDATION INC draws 99% of its grant income from funders outside Florida, across 12 states in all.

WA
NY
NJ
CT
CO
MO
DE
NC
SC
DC
TX
FL

In-state vs out-of-state, by year

’17
’18
’19
’20
’21
’22
’23
Florida out of state home

Funder states come from each funder’s own filing. $276k arriving through sponsors registered in 9 states is excluded from the map and the split above: a sponsor holds money on a donor’s behalf, so its registered address would place those dollars somewhere no donor need ever have been. Trends are read to FY2023, the last fiscal year that has finished arriving. FY2024–FY2026 are still being filed and are shown unshaded; they do not move any figure on this page.

04Its place in the field

Against its field

THE NATHAN B STUBBLEFIELD FOUNDATION INC's funding base is broadening — from 7 funders to 12 as grant income climbed.

Operating margin−5% · below the median
Months of reserve3.6mo · below the median
Revenue growth (annualized)1% · bottom quartile

this organization peer median middle 50% of peers· 3,430 arts & culture nonprofits $1M–$10M, FY2025

Organizations like THE NATHAN B STUBBLEFIELD FOUNDATION INC

Organizations whose mission and program text most resemble this one, by semantic similarity over every organization in the US filings — the closest peers, and often the clearest route to shared or prospective funders.

In Florida

South Florida Public Media Group Inc77%Metropolitan Ministries Foundation Inc77%Miami Freedom Project for Democracy77%Miami Freedom Project Inc77%Npa Foundation77%The Sanctuary Golf Club Foundation Inc77%The Community Foundation for Northeast Florida Inc77%Tampa Bay Partnership for Regional Research & Education Foundation77%

Nationally

Npr Foundation82%National Association of Broadcasters Leadership Foundation81%North Canton Supporting Foundation80%Friends of Kwmu Inc80%Nashville Public Radio80%Wnin Tri-State Public Media Inc80%Lufkin Educational Broadcasting Foundation80%North Texas Public Broadcasting Foundation80%
05Profile & governance

Read directly from this organization’s own Form 990, as neutral context.

Where the money goes

60% of spending goes to programs.

Program 60%Management 33%Fundraising 7%

Governance

15
board members
100%
independent
✓Conflict-of-interest policy✓Whistleblower policy✓Document retention✓Board reviewed the 990✓Audited financials

Public support

99%

Share of support from the public (Schedule A) — the basis for its public-charity status.

Screen this organization

A dated, signed PDF of the compliance screen for THE NATHAN B STUBBLEFIELD FOUNDATION INC: IRS status (Business Master File, Publication 78, auto-revocation), the OFAC sanctions lists, the Internal Revenue Bulletin, and California registration, with the Rev. Proc. 2018-32 §8.01 reliance elements stated element by element. Generated from the current files at the moment you download it.

A paid feature, included from the $75 plan up. Sign in to download.

Screens are triage, not determinations; a source that cannot be read reports not screened, never clear. Screen this nonprofit · How the screen works · on the API as GET /api/screening/{ein}?format=pdf

Questions and answers

Who funds THE NATHAN B STUBBLEFIELD FOUNDATION INC?
THE NATHAN B STUBBLEFIELD FOUNDATION INC (Florida) receives grants from 31 organizations whose IRS filings report $1,728,709 to it, the largest being CORPORATION FOR PUBLIC BROADCASTING ($1,385,685). 12 of them have funded it in more than one year.
How many funders does THE NATHAN B STUBBLEFIELD FOUNDATION INC have?
IRS filings report 31 organizations giving $1,728,709 in grants to THE NATHAN B STUBBLEFIELD FOUNDATION INC, 12 of which have funded it in more than one year.
Who is the largest funder of THE NATHAN B STUBBLEFIELD FOUNDATION INC?
CORPORATION FOR PUBLIC BROADCASTING is the largest funder on record, with $1,385,685 in grants. The full list of funders is on this page.
How can an organization like THE NATHAN B STUBBLEFIELD FOUNDATION INC find more funders?
Start with the funders already giving here, then look at the foundations that back similar organizations in Florida. The funding by cause and by state pages list the largest funders for a given area and how to approach them.

Play a game about who funds Nathan B Stubblefield →

These figures are read directly from IRS Form 990 / 990-PF e-file XML: this organization’s own return for FY2025 (financials across 2017–2025), and the filings of 31 funders that report grants to it. “On record” means captured in the filings we have parsed — a funder that does not e-file, or whose grant detail is not itemized, will not appear. Filings run roughly 12–24 months behind. Trends on this page end at FY2023, the last fiscal year that has finished arriving; later years are shown and marked, and move no figure. Data on this page was exported October 22, 2026. What this page cannot tell you · view filing