· Private foundation
The Hideo Sasaki 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 FY2017–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k19 grants · $42k
- $10k–50k4 grants · $46k
| Recipient | Amount |
|---|---|
| TRUSTEES OF TUFTS COLLEGE | $15,000 |
| CHINATOWN COMMUNITY LAND TRUST | $10,500 |
| BOSTON PUBLIC HOUSING CORPORATION | $10,000 |
| RESIST INC | $10,000 |
| SOCIEDAD LATINA INC | $5,500 |
| FOUR CORNERS MAIN STREET INC | $5,500 |
| AYNI INSTITUTE | $5,000 |
| THE HARBORKEEPERS | $5,000 |
| EAST END HOUSE INC | $3,000 |
| FRIENDS OF BALDWIN SCHOOL INC | $2,000 |
| PROJECT RESTORE US INC | $2,000 |
| CITIZENS OF THE WORLD INC | $2,000 |
| COMMUNITY ART CENTER INC | $2,000 |
| SPONSOR INC DBA MISSION EARTH | $2,000 |
| ON THE RISE INC | $1,184 |
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 (FY22–24, $30k) land where the poverty rate runs at 12%, against an area that typically sits at 8%. 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.
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.
29 repeat relationships — 13 still active in FY2024, 16 since wound down; 10 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, 76% of grant dollars renewed an existing relationship; $21k 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
Trustees of Tufts College2× · 2023–2024 · $30k · revenue +16%
THE CENTER FOR INDEPENDENT DOCUMENTARY INC2× · 2022–2023 · $15k · revenue +88%- GBGive Black Alliance2× · 2018–2019 · $15k · revenue +831%
Funded once
- BHBOSTON HOUSING AUTHORITY JONATHAN TARLETONone grant, 2019 · $10k
- HEHOME ENERGY EFFICIENCY TEAMNATHAN PHILLIPSone grant, 2020 · $10k
- IGIndividual grant recipientone grant, 2019 · $10k
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.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
Central square theater, the oldest female-led theater organization in greater boston, is an innovator in the non-profit arts field in collaborative leadership. cst engages over 35,000 people annually through live performance, rigorous…
The mission of the cambridge chamber of commerce is to make cambridge a better place in which to live, to work, to do business, to visit and to study.
Ace builds the power of communities of color and low-income communities in massachusetts to eradicate environmental racism and classism, create healthy, sustainable communities, and achieve environmental justice.
The corporation is organized to improve the quality of life in bostons urban communities by building capacity, environmental health, and providing economic opportunity in a manner that responds directly to community needs, interests, and…
Our mission is to ensure that the people of greater boston benefit from a vibrant, resilient, and inclusive waterfront, harbor, and islands; these spaces are equitable, accessible, and adapted to climate change; and to ensure our public,…
Ceres is a nonprofit advocacy organization working to accelerate the transition to a cleaner, more just, and resilient world. through education and research, we make the business case for action on the most pressing sustainability…
The southwest boston community development corporation is led by principles of racial equity and inclusion, to alleviate social and economic disparities that impact people's quality of life and future opportunities. it shall be led by and…
The organization's mission is to provide management and supporting services for related organizations which own and operate low-income housing units for qualified individuals in the city of cambridge, ma.
Necp believes that social change happens when those most impacted by issues of systemic injustice, organize at the block level to address issues within their neighborhoods. through their involvement at a community level, residents engage…
Culturehouse improves livability in local communities by transforming underutilized spaces into vibrant social infrastructure.
For reference, the grantee most central to the portfolio’s shape is Third Sector New England Inc and the most unlike its peers is Theharborkeepers. 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 29 years old; the field is 17. You back the established end — and your money leans older still.
The field is 20% startups (under 5 years old) — 6% of your grantees by number, and just 3% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 10% 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.
35 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. 35 of the 59 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 Trustees of Tufts College ↗
- Who funds CHARLES RIVER CONSERVANCY INC ↗
- Who funds RESIST INC ↗
- Who funds THE DOROTHY AND CHARLES MOSESIAN CENTER FOR THE ARTS INC ↗
- Who funds THE CENTER FOR INDEPENDENT DOCUMENTARY INC ↗
- Who funds Give Black Alliance ↗
- Who funds BOSTON PUBLIC HOUSING CORPORATION ↗
- Who funds GROUNDWORK SOMERVILLE INC ↗
- Who funds CLIMABLE INC ↗
- Who funds CHINATOWN COMMUNITY LAND TRUST INC ↗
- Who funds THEHARBORKEEPERS ↗
- Who funds AYNI INSTITUTE INC ↗
- Who funds YOUTH DESIGN INC ↗
- Who funds EAST END HOUSE INC ↗
- Who funds SOCIEDAD LATINA INC ↗
- Who funds FOUR CORNERS MAIN STREET INC ↗
- Who funds BOSTON CHINATOWN NEIGHBORHOOD CENTER INC ↗
- Who funds HOME ENERGY EFFICIENCY TEAM INC ↗
- Who funds CAMBRIDGE COMMUNITY CENTER INC ↗
- Who funds COMMUNITY ART CENTER INC ↗
- Who funds CONSERVATION LAW FOUNDATION INC ↗
- Who funds GREENROOTS INC ↗
- Who funds ON THE RISE INC ↗
- Who funds Green Cambridge 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: Boston Foundation Inc · Barr Foundation · Eastern Bank Foundation · United Way Of Massachusetts Bay Inc · Cambridge Community Foundation · Liberty Mutual Foundation Inc · Cambridge Savings Charitable Foundation Inc · Cummings Foundation Grants Inc (Fka Oneworld Boston Inc) · Philanthropy Massachusetts Inc · The Lander Family Charitable Foundation · Wagner Foundation · Adelard & Valeda Roy Foundation
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 Hideo Sasaki 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, a single department, or state — and drag the year to watch it move.
- Transition House Inc — 39% of income from government
- On the Rise Inc — 39% of income from government
- Boston Chinatown Neighborhood Center Inc — 38% of income from government
- Sociedad Latina Inc — 15% of income from government
- Cambridge Camping Association Inc — 14% of income from government
- Community Art Center Inc — 14% of income from government
- Trustees of Tufts College — 13% of income from government
- Groundwork Somerville Inc — 12% of income from government
- Arts & Business Council of Greater Boston Inc — 8% of income from government
- Cambridge Community Center Inc — 8% of income from government
- The Center for Independent Documentary Inc — 6% of income from government
- Third Sector New England Inc — 3% of income from government
- East End House Inc — 3% of income from government
- Cambridge Young Women's Christian Association — 3% of income from government
- Resist Inc — 2% of income from government
- Greenroots Inc — 1% of income from government
- Lesley University — 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.
Warm introductions · Powered by PlinthPlus
How do I get to The Hideo Sasaki Foundation?
Find your warmest path to The Hideo Sasaki 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.