· Private foundation
Limestone Foundation
Its FY2024 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 FY2020–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k5 grants · $25k
- $10k–50k6 grants · $115k
- $50k–250k15 grants · $1.3M
- $250k+3 grants · $1.1M
| Recipient | Amount |
|---|---|
| CENTER ON BUDGET AND POLICY PRIORITIES | $505,000 |
| NEW MEXICO VOICES FOR CHILDREN | $300,000 |
| KENTUCKY CENTER FOR ECONOMIC POLICY INC | $275,000 |
| KENTUCKY CIVIC ENGAGEMENT TABLE INC | $150,000 |
| STATE POWER FUND | $150,000 |
| KENTUCKY COALITION INC | $150,000 |
| MONTANA BUDGET AND POLICY CENTER | $75,000 |
| NEO PHILANTHROPY INC | $75,000 |
| OKLAHOMA POLICY INSTITUTE | $75,000 |
| HOPEWELL FUND | $75,000 |
| NATIONAL ASSOCIATION FOR THE ADVANCEMENT OF COLORED PEOPLE | $75,000 |
| THE ALLUVIAL COLLECTIVE | $75,000 |
| NEW VENTURE FUNDAMERICANS FOR TAX FAIRNESS | $75,000 |
| NEW JERSEY POLICY PERSPECTIVE | $75,000 |
| THE AMERICAN PROSPECT | $50,000 |
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 human-services grants (FY20–24, $1.3M) land where the poverty rate runs at 15%, against an area that typically sits at 11%. 77% 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
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.
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.
36 repeat relationships — 23 still active in FY2024, 13 since wound down; 1 grantees were first funded in FY2024 (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 FY2024, 88% of grant dollars renewed an existing relationship; $275k 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
Center on Budget and Policy Priorities5× · 2020–2024 · $2.4M · revenue +12%- MAMOUNTAIN ASSOCIATION FOR COMMUNITY ECONOMIC DEVELOPMENT INC4× · 2020–2023 · $1.4M · revenue +67%
- NMNEW MEXICO VOICES FOR CHILDREN2× · 2023–2024 · $600k · revenue +22%
Funded once
WISCONSIN VOICES INCone grant, 2020 · $325k · revenue -89%
ALLIANCE FOR YOUTH ORGANIZINGone grant, 2020 · $175k · revenue -28%- PPUSHBLACKgraduatedone grant, 2020 · $125k · revenue +78%
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.
To teach and disseminate educational materials to the public.
The association of washington cities builds connections between our state's diverse cities and towns, while providing our members with the support needed to thrive through delivery of data-driven education, nationally recognized pooling…
The center for american progress (cap) is an independent nonpartisan policy institute that is dedicated to improving the lives of all americans through bold, progressive ideas, as well as strong leadership and concerted action. our aim is…
Central indiana corporate partnership (cicp) is an alliance of indiana's business and research university leaders coming together to foster long-term prosperity for the region. cicp's mission is to transform the economy of indiana in order…
Providing research, education and practical information all aimed at optimizing newspapers' business operations, deepening their community engagement and enhancing the quality of their journalism.
The center for international policy is a woman-led, progressive, independent nonprofit center for research, education, and advocacy working to advance a more peaceful, just, and sustainable u.s. approach to foreign policy. through…
The mission of the d.c. policy center is to arm decision makers with fact-based, unbiased, and reliable research and analyses to help create a vibrant local economy that can maximize opportunities for residents, workers, and businesses in…
To establish and promote programs to protect the global climate, forests, wildlife and the natural environment, through research, advocacy, and investigation.
To drive principled solutions through rigorous analysis, reasoned negotiation, and respectful dialogue. to actively promote bipartisanship and work to address the key challenges facing the nation including energy and infrastructure,…
Common future is a network of pioneering leaders across the u.s. and canada who work deeply within their communities to create alternative approaches to business, philanthropy, and investing. we envision an economy that has transitioned…
The center for popular democracy (cpd) and its affiliates know that everyday people have the power to change the world. we upend business and politics as usual to forge a representative, multiracial government and society where we all…
The nonpartisan campaign legal center advances democracy through law at the federal, state and local levels, fighting for every american's rights to responsive government and a fair opportunity to participate in and affect the democratic…
For reference, the grantee most central to the portfolio’s shape is Planned Parenthood of Indiana and Kentucky Inc and the most unlike its peers is Boston Symphony Orchestra Inc. 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 31 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) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% 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.
58 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. 58 of the 64 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
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 Center on Budget and Policy Priorities ↗
- Who funds MOUNTAIN ASSOCIATION FOR COMMUNITY ECONOMIC DEVELOPMENT INC ↗
- Who funds KENTUCKY COALITION INC ↗
- Who funds NEW MEXICO VOICES FOR CHILDREN ↗
- Who funds KANSAS ACTION FOR CHILDREN INC ↗
- Who funds KENTUCKY CIVIC ENGAGEMENT TABLE INC ↗
- Who funds GEORGIA BUDGET AND POLICY INSTITUTE INC ↗
- Who funds MONTANA BUDGET AND POLICY CENTER ↗
- Who funds STATE POWER FUND ↗
- Who funds THE AMERICAN PROSPECT INC ↗
- Who funds WISCONSIN VOICES INC ↗
- Who funds The Commonwealth Institute for ↗
- Who funds NEO Philanthropy Inc ↗
- Who funds OKLAHOMA POLICY INC ↗
- Who funds KENTUCKY CENTER FOR ECONOMIC POLICY INC ↗
- Who funds WEST VIRGINIA CENTER ON BUDGET AND POLICY INC ↗
- Who funds TIDES CENTER ↗
- Who funds FAITH IN ACTION NETWORK ↗
- Who funds THE ALLUVIAL COLLECTIVE ↗
- Who funds ALLIANCE FOR YOUTH ORGANIZING ↗
- Who funds HOPEWELL FUND ↗
- Who funds BALLOT INITIATIVE STRATEGY CENTER FOUNDATION ↗
- Who funds INSTITUTE ON TAXATION AND ECONOMIC POLICY ↗
- Who funds THE URBAN INSTITUTE ↗
- Who funds New Jersey Policy Perspective ↗
- Who funds Native Peoples Action Community Fund ↗
- Who funds PUSHBLACK ↗
- Who funds PROGEORGIA STATE TABLE INC ↗
- Who funds Fair Elections Center ↗
- Who funds BROOKLINE COMMUNITY FOUNDATION INC ↗
- Who funds RURAL ARIZONA ENGAGEMENT ↗
- Who funds ONE ARIZONA ↗
- Who funds THE COMMUNITY FOUNDATION OF LOUISVILLE INC ↗
- Who funds NEW YORK WOMEN'S FOUNDATION INC ↗
- Who funds WINDWARD FUND ↗
- Who funds VOTERIDERS ↗
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: New Venture Fund · Hopewell Fund · Amalgamated Charitable Foundation Inc · Annie E Casey Foundation Inc · Center on Budget and Policy Priorities · Tides Foundation · The Ford Foundation · Chestnut Fund · Mary Reynolds Babcock Foundation Incorporated · Wellspring Philanthropic Fund Inc · NEO Philanthropy Inc · Economic Policy Institute
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 Limestone 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.
- Beth Israel Deaconess Medical Center Inc — 6% of income from government
- Boston Symphony Orchestra Inc — 0% 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.
Warm introductions · Powered by PlinthPlus
How do I get to Limestone Foundation?
Find your warmest path to Limestone 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.