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The Millbrook Foundation at a glance

· Private foundation

The Millbrook 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.

$15k
Granted FY2025still arriving
2
Grants FY2025still arriving
2
States reached
$10k
Largest
01What it fundsRead
02The needRead
03Its fieldRead
01What it funds
01100% classified

What it funded, over time

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

International$20kArts & Culture$10kHousing & Shelter$5kEnvironment$5kHealth$5kAnimals$5kFood & Nutrition$5k
02FY2025 · 2 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k1 grant · $5k
  • $10k–50k1 grant · $10k
$10,000
Median grant
2
States reached
$58k
Total assets
Largest grants
RecipientAmount
INTERNATIONAL AIDS VACCINE INITIATIVE INC$10,000
PHILABUNDANCE$5,000
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:

Dollar for dollar, its grants (FY17–25) land where the poverty rate runs at 12%, against an area that typically sits at 10%. 45% of its dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 10%CHATHAM CHORALE INC: $5k → 8%LIVING BEYOND BREAST CANCER: $5k → 7%HABITAT FOR HUMANITY: $5k → 22%AFRICAN MEDICINE & EDUCATION FUND: $5k → 11%WORLDWIDE DOCUMENTARIES INC: $5k → 10%INTERNATIONAL AIDS VACCINE INITIATIVE INC: $10k → 17%THE WILD ANIMAL SANCTUARY: $5k → 9%EDUCATION FOR ALL CHILDREN: $5k → 5%RIVERBEND ENVIRONMENTAL EDUCATION CENTER: $5k → 7%PHILABUNDANCE: $5k → 22%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 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
Gavi Alliance

To save lives and protect people's health by increasing equitable and sustainable use of vaccines.

International
2
Bubye Valley Conservation Research

Conservation and research of endangered wildlife

Animals
3
Wildaid Inc

Wildaid's mission is to inspire change and empower the world to protect wildlife and vital habitats from critical threats.

Animals
4
World Resources Institute

Wri is committed to creating change that improves people's lives and ensures the natural world can thrive. (see schedule o)wri's bold vision requires a formula for success we call "count it. change it. scale it.":- count it: our work is…

International
5
Rainforest Trust

Rainforest trust saves endangered wildlife and protects our planet by creating rainforest reserves through partnerships, community engagement, and donor support.

International
6
International Development Enterprises

See schedule o for a more detailed description of ide's mission statement and achievements.

International
7
Wildlife Sos

Protecting india's precious wildlife from poaching, habitat loss, and human exploitation since 1995.

Animals
8
African Wildlife Foundation Inc

Awf's mission is to ensure wildlife and wild lands thrive in modern africa. we work to equip african governments, institutions, business, and communities with the tools, insights, and support they need to define, own, and realize a…

Animals
9
World Vision Inc

World vision, inc. is a christian humanitarian organization dedicated to working with children, families, and their communities worldwide to reach their full potential by tackling the causes of poverty and injustice. (continued on schedule…

International
10
Intrahealth International Inc

Our mission is to improve the performance of health workers and strengthen the systems in which they work.

Health
11
Actionaid Usa

Actionaid is an international network building a just, equitable, and sustainable world in solidarity with communities on the frontlines of poverty and injustice. actionaid usa is the u.s. branch of actionaid international, which works in…

Social Science
12
Animal Outlook Inc

Animal outlook is a national animal protection organization working to end the abuse of farmed animals using a variety of strategies, including investigations, legal advocacy, corporate and food system reform, and vegan outreach.

Animals
How this is measured
The grantee most central to the portfolio’s shape is Living Beyond Breast Cancer; the most unlike its peers is The Wild Animal Sanctuary. 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

8 grantees tracked through their own filings, 2017–2025.

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 2025, not grant rows in a single year, so this will not match the grant count on the cover. 8 of the 10 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.

0
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
8/8
Grantees still filing
4/8
Grew since first funded

Where the money sits, by cause and then by grantee

INTERNATIONAL AIDS VACCINE INITIATIVE INC: $10,000 · InternationalINTERNATIONAL AIDS VACCINE INI…EDUCATION FOR ALL CHILDREN: $5,000 · InternationalEDUCATION FOR ALL CHILDRENCHATHAM CHORALE INC: $5,000 · OtherCHATHAM CHORALE INCAFRICAN MEDICINE & EDUCATION FUND: $5,000 · OtherAFRICAN MEDICINE & EDUCATION F…HABITAT FOR HUMANITY: $5,000 · OtherHABITAT FOR HUMANITYTHE WILD ANIMAL SANCTUARY: $5,000 · AnimalsTHE WILD A…WORLDWIDE DOCUMENTARIES INC: $5,000 · Arts & CultureWORLDWIDE …LIVING BEYOND BREAST CANCER: $5,000 · HealthLIVING BEY…Philabundance: $5,000 · Food & NutritionPhilabunda…RIVERBEND ENVIRONMENTAL EDUCATION CENTER: $5,000 · EnvironmentRIVERBEND …
International$15,000Other$15,000Animals$5,000Arts & Culture$5,000Health$5,000Food & Nutrition$5,000Environment$5,000

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 budgetINTERNATIONAL AIDS VACCINE INITIATIVE INC: $10,000 over 1y, 0.0% of budgetTHE WILD ANIMAL SANCTUARY: $5,000 over 1y, 0.0% of budgetCHATHAM CHORALE INC: $5,000 over 1y, 3.2% of budgetEDUCATION FOR ALL CHILDREN: $5,000 over 1y, 0.4% of budgetWORLDWIDE DOCUMENTARIES INC: $5,000 over 1y, 6.2% of budgetLIVING BEYOND BREAST CANCER: $5,000 over 1y, 0.1% of budgetPhilabundance: $5,000 over 1y, 0.0% of budgetRIVERBEND ENVIRONMENTAL EDUCATION CENTER: $5,000 over 1y, 0.5% 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.

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.

Fidelity Investments …Amazonsmile Foundation
Fidelity Investments Charitable Gift FundMA5.3× affinity4 shared granteesties to 1 of 1Hover any node to trace its alignments.Compare side by side →

Open a dossier: 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.

How much its grantees rely on government

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

2024
’20’21’22’23’24’25
no gov · 10%1%3%6%10%funder's share of their income ↑0%19%38%56%75%share of the org’s income from government →
    no gov moneyreceives it· size = income
    1get no government money at all
    1report government grants on their 990 we could not trace to a source (not plotted)
    0rely on government for over half their income
    ⤢ axis zoomed · 0–75%
    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.

    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 10 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 Millbrook’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