· Private foundation
The Riggs 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 FY2021–2025.
Where the money goes
Your grants by size, and where they go.
| Recipient | Amount |
|---|---|
| SHERIDAN WYO RODEO BOARD | $6,000 |
| CHAPS EQUINE ASSISTED SERVICES | $3,500 |
| GOOSE CREEK LIVESTOCK 4-H CLUB | $3,500 |
| THE BRINTON MUSEUM | $3,000 |
| WHITNEY RINK IN THE M&M'S CENTER | $500 |
| MEMORIAL HOSPITAL FOUNDATION | $400 |
| WORLDS OF MUSIC | $300 |
| BIG HORN EQUESTRIAN CENTER | $250 |
| WYO THEATER | $250 |
| THE HUB ON SMITH | $250 |
| DOG & CAT SHELTER INC | $250 |
| GENESIS FOUNDATION | $100 |
| BIG HORN DEVELOPMENT CENTER | $100 |
| CITY OF SHERIDAN PUBLIC ARTS | $100 |
| ADVOCACY & RESOURCE CENTER | $100 |
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 (FY21–25, $3k) land where the poverty rate runs at 10%, against an area that typically sits at 9%. 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.
And the relationships you keep tend to grow: grantees you re-up on have seen median revenue of +18% since the first grant, against 0% for the ones you funded once.
17 repeat relationships — 16 still active in FY2025, 1 since wound down; 4 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, 78% of grant dollars renewed an existing relationship; $4k 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
- TNTHE NEW MUSEUM AT THE BRADFORD BRINTON RANCH3× · 2022–2025 · $4k · revenue +12%
- BHBIG HORN EQUESTRIAN CENTER INC4× · 2022–2025 · $1k · revenue +18%
- WTWYO THEATRE INC5× · 2021–2025 · $1k · revenue +14%
Funded once
- SCSHERIDAN COUNTY YOUTH MARKET LIVESTone grant, 2023 · $4k
- WWWYO WEST WARRIOR FOUNDATIONone grant, 2023 · $750 · revenue -18%
- SPSAMARITAN'S PURSEone grant, 2024 · $500 · revenue 0%
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.
Preserve and share our rich heritage, engaging present and future generations.
To serve victims of domestic violence, sexual assault, child abuse and other crimes committted in big horn county, wyoming
Cowboy state daily's mission is to provide high-quality local and statewide reporting on the issues that impact wyoming, featuring stories that capture wyoming's wonderful "small town with long streets" vibe.
To promote science-based wildlife management that fosters ecosystem health and dynamic equilibrium between species throughout the state of wyoming.
Help families and caregivers of those with Alzheimers and Dementia related illnesses care for their loved ones. Direct services provide: support, encouragement, access to community resources & techniques to help meet challenges of caring…
To provide students a learning environment where they can develop independence, cultivate passions, and grow the skill sets needed to be successful and fulfilled in life
Assist disabled and needy veterans.
The purpose of the entity is to provide activities, wellness and nutrition programs for senior citizens in shoshoni, wy and the surrounding area.
The mission shall be to bring together those people interested in history and especially the history of sheridan county, ks. understanding the history of our community is basic to our democratic way of life, gives us a better understanding…
Museum
For reference, the grantee most central to the portfolio’s shape is Advocacy & Resource Center and the most unlike its peers is Samaritan's Purse. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
15 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. 15 of the 31 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 THE NEW MUSEUM AT THE BRADFORD BRINTON RANCH ↗
- Who funds CHAPS EQUINE ASSISTED SERVICES ↗
- Who funds BIG HORN EQUESTRIAN CENTER INC ↗
- Who funds WYO THEATRE INC ↗
- Who funds DOG & CAT SHELTER INC ↗
- Who funds WYO WEST WARRIOR FOUNDATION ↗
- Who funds SENIOR CITIZEN COUNCIL ↗
- Who funds SAMARITAN'S PURSE ↗
- Who funds GENESIS FOUNDATION INC ↗
- Who funds ADVOCACY & RESOURCE CENTER ↗
- Who funds CHILDREN'S CENTER ↗
- Who funds CHILD DEVELOPMENT CENTER - REGION II INC ↗
- Who funds SHERIDAN COUNTY LIBRARY FOUNDATION ↗
- Who funds HILLSDALE COLLEGE ↗
- Who funds TURNING POINT USA 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: First Interstate BancSystem Foundation Inc · Homer A Scott & Mildred S Scott Foundation · Wyoming Community Foundation · The Roberts Family Foundation · Muriel and Seymour Thickman Family Foundation · Joe and Arlene Watt Foundation Inc · Wolf Creek Charitable Foundation · Homer A Jr & Janet Scott Family Foundation · The Seidler Foundation · Forrest E Mars Jr Sheridan Charitable · Ec & Edith Gwillim Memorial Fund · The Herbert & Dorothy Zullig 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 Riggs 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.
Warm introductions · Powered by PlinthPlus
How do I get to The Riggs Foundation?
Find your warmest path to The Riggs 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.