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· Private foundation

Hidden Spring Foundation

Its FY2025 filing reports that it accepted unsolicited grant applications.

$75k
Granted FY2025still arriving
19
Grants FY2025still arriving
5
States reached
$10k
Largest
01What it funds
0199% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2020 to 2025.

Education$107kReligion$96kHuman Services$40kArts & Culture$33kHealth$30kFood & Nutrition$20kInternational$15kScience & Tech$13kOther$0
02FY2025 · 19 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k18 grants · $65k
  • $10k–50k1 grant · $10k
$3,750
Median grant
5
States reached
$1.4M
Total assets
Largest grants
RecipientAmount
SALVE REGINA ACADEMY$10,000
BOSTON HEALTHCARE FOR THE HOMELESS$8,031
HARVARD PUBLIC CULTURE PROJECT$5,022
GROTON SCHOOL$5,007
PLANNED PARENTHOOD$5,007
BELMONT HILL SCHOOL$5,000
ECCLESIA MINISTRIES$5,000
Individual grant recipient$4,500
LOAVES AND FISHES FOOD PANTRY$4,000
EPIPHANY SCHOOL$3,750
HORIZONS FOR HOMELESS CHILDREN$3,522
SORRENTO LIBRARY$2,500
MANO EN MANO$2,500
WOMEN FOR HEALTHY RURAL LIVING$2,500
EPIPHANY SCHOOL EARLY LEARNING CENTER$2,250
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:

Its human-services grants (FY20–25, $27k) land where the poverty rate runs at 16%, against an area that typically sits at 9%. 100% of those dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.

area typical 9%BOSTON HEALTHCARE FOR THE HOMELESS: $8k → 16%BOSTON HEALTHCARE FOR THE HOMELESS: $6k → 16%BOSTON HEALTHCARE FOR THE HOMELESS: $6k → 16%BOSTON HEALTHCARE FOR THE HOMELESS: $1k → 16%ST FRANCIS HOUSE: $3k → 16%HORIZONS FOR HOMELESS CHILDREN: $4k → 16%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.

Which US states its grants reach

ME
NH
NY
MA
IA
OH
CA
DC
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 grantees
repeat funding

Who it funds again

Organizations funded in more than one year, against those funded once.

84%of every dollar goes to organizations it has funded before.
$328k · 25 repeat orgs$61k to everyone else

25 repeat relationships: 14 still active in FY2025, 11 since wound down; 5 grantees were first funded in FY2025 (too recent to call).

How the two cohorts compare

Re-uppedFunded once

Organizations

25
12

Total granted

$328k
$36k

Median revenue growth · since first grant

+21%
+30%

Still filing today

56%
58%

New vs renewed · share of each year

In FY2025, 66% of grant dollars renewed an existing relationship; $25k went to new ones.

50%100%’20’21’22’23’24’25
RenewedFirst-time

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

’20’21’22’23’24’25
EducationHuman ServicesArts & CultureHousing & ShelterInternationalFood & NutritionOther
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.

Backed again, and grew

  • THE EPIPHANY SCHOOL INC
    6× · 2020–2025 · $43k · revenue +185%
  • GROTON SCHOOL
    6× · 2020–2025 · $22k · revenue +32%
  • BOSTON HEALTH CARE FOR THE HOMELESS PROGRAM INC
    4× · 2022–2025 · $20k · revenue +49%

Funded once

  • HC
    HARVARD COLLECTION OF HISTORICAL SCIENTIFIC INSTRUMENTS
    one grant, 2022 · $7k
  • CO
    COLLECTION OF HISTORICAL SCIENTIFIC INSTRUMENTS HARVARD UNIVERSITY
    one grant, 2020 · $6k
  • EM
    ECCELSIA MINISTRIES
    one grant, 2023 · $6k
How this is measured

Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.

04Its 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
Boston Architectural College

The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.

—
2
Home for Aged Women in Salem

The organization's mission is to encourage and support the facility's residents in maintaining family and life long relationships through the operation of a 36-bed residential care facility in salem, massachusetts. brookhouse home welcomes…

—
3
President and Trustees of Bates College

Bates is a college of the liberal arts and sciences, and is a coeducational, nonsectarian, residential college with special commitments to academic rigor, and to assuring in all of its efforts the dignity of each individual, and access to…

Education
4
Managers of Boston Port and Seamen's Aid Society
—
5
Maine Historical Society

Maine Historical Society, founded in 1822, is a private non-profit whose mission is to preserve and share Maine's story. Based in Portland, we work closely with communities and partners throughout the state, and serve a statewide and…

Arts & Culture
6
Trustees of Dartmouth College

Dartmouth College educates the most promising students and prepares them for a lifetime of learning and of responsible leadership, through a faculty dedicated to teaching and the creation of knowledge.

Education
7
Laboure College of Healthcare Inc

Laboure college provides high-quality education and prepares women and men for careers in nursing and allied health fields.

—
8
Children's Hospital Corporation

Provider of pediatric healthcare, education, research & community service

Health
9
Brookview House Inc

Brookview's mission is to help homeless and at risk families learn the skills necessary to break the cycle of homelessness and poverty.

Human Services
10
Harbor Homes Inc

Harbor Care's mission is to provide vital services, including housing and healthcare to all in our communities needing assistance. Our vision is one where everyone gets to live safe, stable, and healthy lives, filled with purpose, respect…

Housing & Shelter
11
Beth Israel Deaconess Hospital-Plymouth Inc

The mission of the beth israel deaconess hospital-plymouth, inc. (bid-plymouth or hospital) is to improve the health and well-being of its patients and communities by providing a full continuum of healthcare services with excellence and…

Health
12
Project Hope Boston Inc

Project hope is a multi service agency that moves families up and out of poverty.project hope works in partnership with women and families in the dorchester and roxbury neighborhoods of boston on their journeys up and out of poverty. we do…

Human Services
How this is measured
The grantee most central to the portfolio’s shape is Saint Francis House Inc; the most unlike its peers is Armenian International Dental Association Inc. 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

22 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. 22 of the 42 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)
2
Early backer (in before they grew)
22/22
Grantees still filing
13/22
Grew since first funded

Where the money sits, by cause and then by grantee

ECCLESIA MINISTRIES INC: $46,653 · OtherECCLESIA MINISTRIES INCCHURCH OF THE REDEEMER: $23,002 · OtherCHURCH OF THE REDEEMERPLANNED PARENTHOOD: $13,596 · OtherPLANNED PARENTHOODPLANNED PARENTHOOD LEAGUE OF MASS: $12,007 · OtherPLANNED PARENTHOOD LEAGUE OF MASSCENTER FOR POLICING EQUITY: $11,000 · OtherCENTER FOR POLICING EQUITYSALVE REGINA ACADEMY: $10,000 · OtherHARVARD COLLECTION OF HISTORICAL SCIENTIFIC INSTRUMENTS: $6,958 · Other+19 more: $68,705 · Other+19 moreTHE EPIPHANY SCHOOL INC: $42,732 · EducationTHE EPIPHANY SCHOOL INCGROTON SCHOOL: $22,314 · EducationGROTON SCHOOLBELMONT HILL SCHOOL INC: $19,500 · EducationBELMONT HILL SCHOOL INCLITTLE SAPLINGS CHILD CARE CENTER: $10,720 · EducationLITTLE SAPLINGS CHILD CARE CENT…SORRENTO PUBLIC LIBRARY: $5,762 · EducationHand in Hand Mano en Mano: $4,500 · EducationThe President and Trustees of Colby College: $4,000 · EducationBOSTON HEALTH CARE FOR THE HOMELESS PROGRAM INC: $20,489 · Human ServicesHORIZONS FOR HOMELESS CHILDREN: $3,522 · Human ServicesSAINT FRANCIS HOUSE INC: $2,500 · Human ServicesAmerican National Red Cross & Its Constituent Chapters and Branches: $2,500 · Human ServicesPEABODY ESSEX MUSEUM INC: $26,811 · Arts & CulturePENOBSCOT MARINE MUSEUM: $1,000 · Arts & CultureLOAVES AND FISHES FOOD PANTRY: $15,838 · Food & NutritionARMENIAN INTERNATIONAL DENTAL ASSOCIATION INC: $8,500 · InternationalINTERNATIONAL INSTITUTE OF NEW ENGLAND INC: $6,000 · Civil Rights
Other$191,921Education$109,528Human Services$29,011Arts & Culture$27,811Food & Nutrition$15,838International$8,500Civil Rights$6,000

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$100k$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetTHE EPIPHANY SCHOOL INC: $42,732 over 6y, 0.1% of budgetPEABODY ESSEX MUSEUM INC: $26,811 over 6y, 0.0% of budgetGROTON SCHOOL: $22,314 over 6y, 0.0% of budgetBOSTON HEALTH CARE FOR THE HOMELESS PROGRAM INC: $20,489 over 4y, 0.0% of budgetBELMONT HILL SCHOOL INC: $19,500 over 5y, 0.0% of budgetLOAVES AND FISHES FOOD PANTRY: $15,838 over 4y, 0.8% of budgetLITTLE SAPLINGS CHILD CARE CENTER: $10,720 over 3y, 11% of budgetARMENIAN INTERNATIONAL DENTAL ASSOCIATION INC: $8,500 over 6y, 5.6% of budgetINTERNATIONAL INSTITUTE OF NEW ENGLAND INC: $6,000 over 2y, 0.1% of budgetSORRENTO PUBLIC LIBRARY: $5,762 over 3y, 6.4% of budgetHand in Hand Mano en Mano: $4,500 over 2y, 0.1% of budgetWOMEN FOR HEALTHY RURAL LIVING: $4,000 over 2y, 0.4% of budgetThe President and Trustees of Colby College: $4,000 over 2y, 0.0% of budgetHORIZONS FOR HOMELESS CHILDREN: $3,522 over 1y, 0.0% of budgetTRANSITION HOUSE INC: $2,500 over 3y, 0.0% of budgetSAINT FRANCIS HOUSE INC: $2,500 over 1y, 0.0% of budgetAmerican National Red Cross & Its Constituent Chapters and Branches: $2,500 over 1y, 0.0% of budgetCHARLES RIVER EPISCOPAL CO-HOUSING ENDEAVOR INC: $2,000 over 1y, 0.7% of budgetBREAKING GROUND HOUSING DEVELOPMENT FUND CORPORATION: $1,000 over 1y, 0.0% of budgetWOMEN'S LUNCH PLACE INC: $1,000 over 1y, 0.0% of budgetPENOBSCOT MARINE MUSEUM: $1,000 over 1y, 0.1% of budgetFRIENDS OF THE PUBLIC GARDEN INC: $715 over 1y, 0.0% 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.

  • Who funds THE EPIPHANY SCHOOL INC ↗
  • Who funds PEABODY ESSEX MUSEUM INC ↗
  • Who funds GROTON SCHOOL ↗
  • Who funds BOSTON HEALTH CARE FOR THE HOMELESS PROGRAM INC ↗
  • Who funds BELMONT HILL SCHOOL INC ↗
  • Who funds LOAVES AND FISHES FOOD PANTRY ↗
  • Who funds LITTLE SAPLINGS CHILD CARE CENTER ↗
  • Who funds ARMENIAN INTERNATIONAL DENTAL ASSOCIATION INC ↗
  • Who funds INTERNATIONAL INSTITUTE OF NEW ENGLAND INC ↗
  • Who funds SORRENTO PUBLIC LIBRARY ↗
  • Who funds Hand in Hand Mano en Mano ↗
  • Who funds WOMEN FOR HEALTHY RURAL LIVING ↗
  • Who funds The President and Trustees of Colby College ↗
  • Who funds HORIZONS FOR HOMELESS CHILDREN ↗
  • Who funds TRANSITION HOUSE INC ↗
  • Who funds SAINT FRANCIS HOUSE INC ↗
  • Who funds American National Red Cross & Its Constituent Chapters and Branches ↗
  • Who funds CHARLES RIVER EPISCOPAL CO-HOUSING ENDEAVOR INC ↗
  • Who funds BREAKING GROUND HOUSING DEVELOPMENT FUND CORPORATION ↗
  • Who funds WOMEN'S LUNCH PLACE INC ↗

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.

Maine Community Foundation IncME12.9× affinity4 shared granteesties to 3 of 3Hover any node to trace its alignments.Compare side by side →

Open a dossier: Maine Community 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.

How much its grantees rely on government

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

2024
’20’21’22’23’24’25
no gov · 40%1%4%8%15%funder's share of their income ↑0%15%30%45%60%share of the org’s income from government →median 8%
  • Transition House Inc: 39% of income from government
  • International Institute of New England Inc: 24% of income from government
  • Horizons for Homeless Children: 21% of income from government
  • Saint Francis House Inc: 18% of income from government
  • Women's Lunch Place Inc: 8% of income from government
  • Boston Health Care for the Homeless Program Inc: 8% of income from government
  • Peabody Essex Museum Inc: 3% of income from government
  • Friends of the Public Garden Inc: 1% of income from government
  • The Epiphany School Inc: 0% of income from government
no gov moneyreceives it· size = income
4get no government money at all
2report government grants on their 990 we could not trace to a source (not plotted)
0rely on government for over half their income
⤢ axis zoomed · 0–60%
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.
05Through Plinth

Warm introductions · Powered by PlinthPlus

How do I get to Hidden Spring Foundation?

Find your warmest path to Hidden Spring 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.

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 42 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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