· Private foundation
Nion Robert Thieriot 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 $10k1 grant · $5k
- $50k–250k6 grants · $605k
- $250k+1 grant · $252k
| Recipient | Amount |
|---|---|
| GREENAGERS | $252,000 |
| BERKSHIRE NATURAL RESOURCES COUNCIL | $175,000 |
| NEW MARLBOROUGH LAND TRUST | $150,000 |
| SONOMA LAND TRUST | $130,000 |
| MONTEREY PRESERVATION LAND TRUST | $50,000 |
| MASSACHUSETTS SPCA | $50,000 |
| THE NATURE CONSERVANCY | $50,000 |
| STURGEON'S MILL RESTORATION PROJECT | $5,000 |
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.
Dollar for dollar, your grants (FY17–25) land where the poverty rate runs at 12%, against an area that typically sits at 8%. 100% of your 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.
8 repeat relationships — 7 still active in FY2025, 1 since wound down.
How the two cohorts compare
Organizations
Total granted
Still filing today
New vs renewed · share of each year
In FY2025, 100% of grant dollars renewed an existing relationship; $0 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
- BNBERKSHIRE NATURAL RESOURCES COUNCIL INC9× · 2017–2025 · $2.0M · revenue +173%
- NMNEW MARLBOROUGH LAND TRUST INC3× · 2023–2025 · $430k · revenue +246% · 60% of their budget
MASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS9× · 2017–2025 · $395k · revenue +115%
Funded once
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.
Conservation and preservation of land.
Kestrel land trust conserves and cares for forests, farms, and riverways in the connecticut river valley of western massachusetts while nurturing an enduring love of the land
Land conservation
We connect people to natural places by protecting open land and creating outdoor experiences in north central massachusetts.
Acquire, preserve and maintain natural resources and wildlife habitat areas (land conservation).
The wildlands trust works throughout southeastern massachusetts to conserve and permanently protect native habitats, farmland, and lands of high ecologic and scenic value that serve to keep our communities healthy and our residents…
The nantucket conservation foundation owns, protects, and stewards over 9,000 acres of land and coastal shoreline, conserves nantucket's rare and significant natural resources, and engages in impactful ecological research to inform…
Overview - founded in boston by pioneering landscape architect and open space visionary charles eliot in 1891, the trustees is the nation's first and the commonwealth's largest conservation and preservation nonprofit.
To protect the nature of massachusetts for people and for wildlife through education, land conservation, advocacy, scientific research, and habitat stewardship/restoration.
The princeton land trust was formed to preserve the natural beauty and rural character of the town of princeton.
To provide the general public with woodland trails through a wildlife sanctuary in a natural state for their appreciation and enjoyment
For reference, the grantee most central to the portfolio’s shape is Berkshire Natural Resources Council Inc and the most unlike its peers is Sturgeons Mill Restoration Project. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
9 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.
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 BERKSHIRE NATURAL RESOURCES COUNCIL INC ↗
- Who funds THE NATURE CONSERVANCY ↗
- Who funds NEW MARLBOROUGH LAND TRUST INC ↗
- Who funds MASSACHUSETTS SOCIETY FOR THE PREVENTION OF CRUELTY TO ANIMALS ↗
- Who funds GREENAGERS INC ↗
- Who funds SONOMA LAND TRUST ↗
- Who funds MONTEREY PRESERVATION LAND TRUST INC ↗
- Who funds NEW ENGLAND FORESTRY FOUNDATION INC ↗
- Who funds STURGEONS MILL RESTORATION PROJECT ↗
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: Donor Advised Charitable Giving Inc · Fidelity Investments Charitable Gift Fund
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 Nion Robert Thieriot 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.
- New England Forestry Foundation Inc — 88% of income from government
- Greenagers Inc — 7% of income from government
- Berkshire Natural Resources Council Inc — 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 Nion Robert Thieriot Foundation?
Find your warmest path to Nion Robert Thieriot 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.