· Private foundation
The Susan Thompson Buffett 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.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2017–2025.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2025
- Under $10k3 grants · $13k
- $10k–50k8 grants · $254k
- $50k–250k77 grants · $12M
- $250k+329 grants · $1.4B
| Recipient | Amount |
|---|---|
| FEDERAL MINISTRY OF HEALTH AND SOCIAL WELFARE NIGERIA | $80,536,284 |
| NAF HOTLINE FUND | $67,322,157 |
| INTERNATIONAL BANK FOR RECONSTRUCTION AND DEVELOPMENT | $60,000,000 |
| OROMIA HEALTH BUREAU | $50,540,000 |
| MINISTRY OF HEALTH BURKINA FASO | $47,020,000 |
| THE GLOBAL FUND TO FIGHT AIDS TUBERCULOSIS AND MALARIA | $40,000,000 |
| HEALTH DEVELOPMENT PARTNERSHIP FOR AFRICA AND THE CARIBBEAN | $38,634,559 |
| MINISTRY OF HEALTH AND SANITATION SIERRA LEONE | $38,020,830 |
| CENTER FOR INTERNATIONAL REPRODUCTIVE HEALTH TRAINING (CIRHT) | $36,818,845 |
| SAND TECH HOLDINGS LIMITED | $35,201,379 |
| PLANNED PARENTHOOD FEDERATION OF AMERICA INC | $32,735,077 |
| GIDABO POLICY AND ADVOCACY CENTER | $32,359,470 |
| IMBUTO FOUNDATION | $30,792,597 |
| Individual grant recipient | $30,023,117 |
| MINISTRY OF HEALTH REPUBLIC OF RWANDA | $30,005,305 |
Do your dollars go where the need is?
Each grant placed by the hardship in its grantee’s ZIP, then read against the area’s typical level.
Your US giving — 66% of grant dollars ($4.4B). The need read here covers only this US portion; the 34% that went abroad ($2.2B) is mapped below.
Your human-services grants (FY17–25, $64.7M) land where the poverty rate runs at 14%, against an area that typically sits at 10%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of your grants land in higher-need ZIPs.
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty linein the grantee’s ZIP, averaged from the tracts in that ZIP; grantee ZIP can differ from where services are delivered.
Which US states your grants reach
Beyond the US — 34% of all-years giving ($2.2B)
33 countries, by the recipient’s country on the filing.
US grants placed by each grantee’s ZIP, which can differ from where services are actually delivered. Need from public data — U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA — shown as context about the area, never attributed to your giving. International giving is mapped by the recipient’s country from the same 990 filings; comparable need data isn’t available at that grain.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 5% of The Susan Thompson Buffett Foundation’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
Who you back again
Which organizations you funded more than once, and which you funded a single time. Each grantee is matched to its own filings.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +48% since the first grant, against +36% for the ones you funded once.
466 repeat relationships — 247 still active in FY2025, 219 since wound down; 46 grantees were first funded in FY2025 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Median revenue growth · since first grant
Still filing today
New vs renewed · share of each year
In FY2025, 83% of grant dollars renewed an existing relationship; $248M went to new ones.
Where new relationships form · theme of each grantee’s first grant
First-time = a grantee’s first year in your filing window; renewed = funded in an earlier year too. As a portfolio matures the renewed share naturally climbs — once funded, an org stays “renewable” — so the signal is the years that buck it (a new-grantee intake wave). 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
- NHNAF HOTLINE FUND9× · 2017–2025 · $416M · revenue +120% · 100% of their budget
PLANNED PARENTHOOD FEDERATION OF AMERICA INC9× · 2017–2025 · $275M · revenue +12%
IPAS6× · 2017–2022 · $136M · revenue +15% · 60% of their budget
Funded once
- MOMINISTRY OF HEALTH RWANDAone grant, 2024 · $33M
- MOMINISTRY OF COMMUNITY DEVELOPMENT GENDER ELDERY AND CHILDREN TANZANIAone grant, 2024 · $24M
- TMTOGO MINISTRY OF HEALTHone grant, 2024 · $20M
Repeat = funded in two or more distinct years; growth and survival are read from each grantee’s own subsequent IRS filings.
The map has a center of gravity: the average direction from the rest of the sector toward the organizations the foundation funds — the shape of its giving. Scoring every nonprofit along that direction surfaces the ones that look most like the portfolio. These are the closest matchesthat aren’t grantees — a resemblance in what they say they do, not a recommendation.
Ppmw provides high-quality, compassionate healthcare, including reproductive care; promote sexual health; and advocate for reproductive rights and health equity for all.
Provide clinical instruction to and supervision of medical school students, interns and residents and, incident thereto, rendering professional services.
To build and maintain financial support for planned parenthood north central states to advance and protect sexual and reproductive health care for all.
To encourage, promote, support, and elect pro-choice women of all political parties to all levels of public office in minnesota.
To make sexual and reproductive healthcare accessible to everyone
The birth center dba lifecycle wellness and birth center is an independent non-profit organization and free-standing, out-of-hospital birth center. our team of midwives and nurse-practitioners provide empowering gynecology and…
Pro-Choice Arizona centers abolition and reproductive justice values to prioritize community needs. We advance reproductive equity, pregnancy and family justice, and abortion access for all folks living in Arizona through direct service…
Our mission is to define the standards, certify obstetricians and gynecologists, and facilitate continuous learning to advance knowledge, practice, and professionalism in women's health.
Pai advances evidence, policies and programs to enable women, youth and at-risk communities to access sexual and reproductive health as core to health equity, climate resilience, economic well-being and gender equality.
Cppef works to assure that all individuals have the freedom to make reproductive decisions and, in order for people to make healthy decisions, they should have access to comprehensive information and services related to sexuality,…
To protect and promote every persons right to access the full range of reproductive healthcare choices in Washington State, including safe and legal abortion, through education, advocacy, lobbying and coalition-building
To advance the planned parenthood mission internationally, including support for the provision and protection of sexual and reproductive health services and rights, and ensuring that all people have access to reproductive and sexual…
For reference, the grantee most central to the portfolio’s shape is Reproductive Equity Now Foundation Inc and the most unlike its peers is Indigenous Women Rising Indigeous Women Rising. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
For each theme you fund, this compares how the sector’s money is shifting with how your own giving is shifting.
Sector change and giving change are each shown relative to their own range, growing (right) or shrinking (left); both normalized, so inflation isn’t mistaken for growth.
Your grantees are a median of 30 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 5% of your grantees by number, and just 2% of your money.
The orgs you fund almost never close — 0.2% lost their exemption, against 13% of the field you don’t fund.
Age = years since IRS exemption (a founding proxy). “Closed” = auto-revocation for 3 years of non-filing — a floor on closure, not proof, and bigger established orgs lapse least. Association, not causation.
414 grantees tracked through their own filings, 2017–2025.
Each one resolved to its own IRS returns and tracked year by year — your grant beside their revenue from every source. Association, dated; never a causal claim.
Counted here: distinct organizations you funded across 2017–2025, not grant rows in a single year — so this will not match the grant count on the cover. 414 of the 842 grantees resolved in that span have returns of their own we could reconcile; the rest are funded organizations whose filings we could not track year by year.
Where your money sits — by cause, then by grantee
Showing your 200 largest grantees by grant value.
Each org by its size and your share of it — top-left is where you’re load-bearing
Go grantee by grantee — a decade per org, and how each moved after you funded them
A decade per grantee — revenue shaded, your grants as bars, all rows on one timeline.
- Who funds NAF HOTLINE FUND ↗
- Who funds PLANNED PARENTHOOD FEDERATION OF AMERICA INC ↗
- Who funds MSI US ↗
- Who funds POPULATION SERVICES INTERNATIONAL ↗
- Who funds HOPEWELL FUND ↗
- Who funds IPAS ↗
- Who funds DKT INTERNATIONAL INC ↗
- Who funds Guttmacher Institute Inc ↗
- Who funds NEW VENTURE FUND ↗
- Who funds NEW MORNING ↗
- Who funds CLINTON HEALTH ACCESS INITIATIVE INC ↗
- Who funds NEO Philanthropy Inc ↗
- Who funds NATIONAL NETWORK OF ABORTION FUNDS INC ↗
- Who funds SOCIETY OF FAMILY PLANNING RESEARCH FUND ↗
- Who funds UNIVERSITY OF NEBRASKA FOUNDATION ↗
- Who funds NUCLEAR THREAT INITIATIVE INC ↗
The grantmakers whose grantees overlap with yours far more than size alone predicts. Each orbits closer the stronger the alignment; the arcs between them show where they also fund each other. Here it reads as a tightly interlocked camp — most of these funders back each other's grantees too.
Open a dossier: Hopewell Fund · Planned Parenthood Federation of America Inc · Wellspring Philanthropic Fund Inc · New Venture Fund · Groundswell Fund · NEO Philanthropy Inc · National Institute for Reproductive Health Inc · Ms Foundation for Women Inc · Rockefeller Philanthropy Advisors Inc · The David and Lucile Packard Foundation · The Prentice Foundation Inc · Amalgamated Charitable Foundation Inc
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. A research starting point: overlap is association, not proof of shared intent.
Government reliance of your grantees
Every dot is one organization The Susan Thompson Buffett Foundation funds. Left–right is the share of its income from government; up–down is the share from you. Bigger dots raise more. Filter to federal or a single department — and drag the year to watch it move.
- Jhpiego Corporation — 65% of income from government
- Save the Children Federation Inc — 30% of income from government
- Boston Medical Center Corporation — 23% of income from government
- Community Catalyst Inc — 15% of income from government
- Johns Hopkins University — 12% of income from government
- Ibis Reproductive Health Inc — 9% of income from government
- President and Fellows of Harvard College — 7% of income from government
- Planned Parenthood of South Florida and the Treasure Coast Inc — 6% of income from government
- Upstream Usa Inc — 4% of income from government
- Oregon Health & Science University Foundation — 1% of income from government
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 your grant caused the public funding. Coverage is precision-first — a floor, not 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 12–24 months.
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How do I get to The Susan Thompson Buffett Foundation?
Find your warmest path to The Susan Thompson Buffett 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.