· Private foundation
Marguerite Sours 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 $10k27 grants · $85k
- $10k–50k3 grants · $30k
| Recipient | Amount |
|---|---|
| RAMPART VIGILANCE FOUNDATION | $10,000 |
| MISSION HAUS FOUNDATION | $10,000 |
| MERCY HEALTH FOUNDATION | $10,000 |
| HANGRY DONKEY SANCTUARY | $6,500 |
| MUSIC IN THE MOUNTAINS | $6,000 |
| CENTRAL CATHOLIC HIGH SCHOOL SCHOLARSHIP | $5,000 |
| FUREVER SUNNY ANIMAL RESCUE | $5,000 |
| HUTCHINSON COMMUNITY COLLEGE | $5,000 |
| SOUTHWEST WILDLIFE CONSERVATION CENTER | $5,000 |
| ST MARY'S UNIVERSITY SCHOOL OF LAW | $5,000 |
| POLAR BEARS INTERNATIONAL | $5,000 |
| STEPHEN SILLER TUNNEL TO TOWERS FOUNDATION | $5,000 |
| ST COLUMBIA SCHOOL | $5,000 |
| GUIDE DOGS OF TEXAS | $4,000 |
| BIG BROTHERS BIG SISTERS OF SOUTHWEST COLORADO | $3,000 |
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 (FY17–25, $41k) land where the poverty rate runs at 16%, 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
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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +52% since the first grant, against +38% for the ones you funded once.
54 repeat relationships — 20 still active in FY2025, 34 since wound down; 10 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, 62% of grant dollars renewed an existing relationship; $44k 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
- MIMUSIC IN THE MOUNTAINS9× · 2017–2025 · $42k · revenue +60%
- SMSt Mary's University3× · 2021–2025 · $25k · revenue +24%
- GDGuide Dogs of Texas Inc9× · 2017–2025 · $21k · revenue +304%
Funded once
- IGIndividual grant recipientone grant, 2017 · $25k
- TWTHE WINNIPEG FOUNDATIONone grant, 2021 · $20k
- OAODYSSEY AFTER SCHOOL ENRICHMENTone grant, 2019 · $13k
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 compassionately serve pets and the people who love them.
Provide veterinary and shelter services for displaced and wayward animals in the township and outlying area of port aransas, texas.
Ark-Valley Humane Society's (AVHS) Mission is ensuring the welfare of companion animals through compassion and care. AVHS operated an open-admission animal shelter for Chaffee County, Colorado.
We are dedicated to rescuig animals left homeless for whatever reason, animals in public shelters where they are at high risk of euthanasia, animals given up by their owners because of difficult circumstances, and those in danger of abuse…
Animal Care and Adoption - ARR's mission is to save the lives of homeless and abandoned dogs and cats. Our goal is reaching a no-kill society in the United States.
To reduce the number of homeless pets through adoption, rescue and spay and neuter programs.
NTASR helps rescue and rehabilitate Australian Shepherds, Border Collies, and mixes of the two.Thus far, several other breeds have made their way through the rescue including a doodle, a dachshund, a frenchie, and a shar pei. NTASR takes…
We specialize in saving the most at-risk and critical needs dogs facing unnecessary euthanasia in our local shelters. We provide every resource they need to ultimately become adoptable to their perfect forever home.
To protect and improve the lives of dogs and cats by providing shelter, care, adoption, rescue, spay & neuter programs and community education.
None
Community dog rescue focused on saving and rehoming street dogs in Houston.
For reference, the grantee most central to the portfolio’s shape is Arizona Humane Society and the most unlike its peers is Furever Sunny. 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 38 years old; the field is 12. You back the established end — and your money leans older still.
The field is 26% startups (under 5 years old) — 13% of your grantees by number, and just 10% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 15% 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.
29 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. 29 of the 104 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 HUMANE SOCIETY OF ARANSAS COUNTY ↗
- Who funds MUSIC IN THE MOUNTAINS ↗
- Who funds St Mary's University ↗
- Who funds Guide Dogs of Texas Inc ↗
- Who funds DURANGO ARTS CENTER INC ↗
- Who funds POLAR BEARS INTERNATIONAL ↗
- Who funds Camp Aranzazu Inc ↗
- Who funds FISHER HOUSE INC ↗
- Who funds THE HANGRY DONKEY SANCTUARY INC ↗
- Who funds Furever Sunny ↗
- Who funds SOUTHWEST WILDLIFE CONSERVATION CENTER ↗
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: Ed Rachal Foundation · Margaret Sue Rust Foundation · Barrow Foundation · Coastal Bend Community Foundation · Dallas Jewish Community Foundation · Steps Foundation fka The Powers Private Foundation · Greater Houston Community Foundation · Shell USA Company Foundation · Baird Foundation Inc · Jpmorgan Chase Foundation · The Pfizer Foundation Inc · Morgan Stanley Global Impact Funding Trust 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 Marguerite Sours 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.
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.