· Private foundation
Storm Castle Foundation
Its FY2024 filing reports that it accepted unsolicited grant applications.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2020–2024.
Where the money goes
Your grants by size, and where they go.
By grant size · FY2024
- Under $10k16 grants · $59k
- $10k–50k17 grants · $355k
- $50k–250k5 grants · $350k
| Recipient | Amount |
|---|---|
| PENINSULA BRIDGE | $100,000 |
| HARVARD LAW SCHOOL | $100,000 |
| UNIVERSITY OF MICHIGAN | $50,000 |
| BOWDOIN COLLEGE | $50,000 |
| MAYO FOUNDATION | $50,000 |
| STPAULS EPISCOPAL CHURCH | $35,000 |
| YALE UNIVERSITY | $30,000 |
| STANFORD UNIVERSITY | $30,000 |
| DARTMOUTH COLLEGE | $30,000 |
| SECOND HARVEST FOOD BANK | $25,000 |
| Individual grant recipient | $25,000 |
| INTERNATIONAL RESCUE | $25,000 |
| LIFE MOVES | $20,000 |
| TEACH FOR AMERICA | $20,000 |
| THE SMITHSONIAN INSTITUTION | $20,000 |
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 (FY20–24, $10k) land where the poverty rate runs at 14%, against an area that typically sits at 10%. 50% of those dollars go to grantees based in above-average-need neighborhoods. Your grants spread fairly evenly across need levels.
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 +35% since the first grant, against +13% for the ones you funded once.
38 repeat relationships — 30 still active in FY2024, 8 since wound down; 5 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, 90% of grant dollars renewed an existing relationship; $72k 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
- BCBowdoin College5× · 2020–2024 · $3.2M · revenue +38%
- TPTHE PENINSULA BRIDGE PROGRAM4× · 2020–2024 · $400k · revenue +59%
- EIEpiscopal Impact Fund FKA Episcopal Charities3× · 2020–2022 · $150k · revenue +20%
Funded once
- UOUS OLYMPIC COMMITTEEone grant, 2021 · $103k
- BSBIG SKY SCHOOL DISTRICTone grant, 2021 · $50k
EQUAL JUSTICE INITIATIVEone grant, 2020 · $30k · revenue -63%
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 mission of mit is to advance knowledge and educate students in science, technology, and other areas of scholarship that will best serve the nation and the world in the 21st century.
The bac is committed to provide excellence in design education grounded in practice and accessible to diverse communities.
The museum's mission statement is: "to discover, interpret, and disseminate - through scientific research and education - knowledge about human cultures, the natural world, and the universe."
The academy is a renowned scientific and educational institution with a mission to regenerate the natural world through science, learning, and collaboration. based in san francisco's golden gate park, it is home to a world-class aquarium,…
Research, education and general - princeton university is a private not-for-profit, non-sectarian institution of higher learning with approximately 5,700 undergraduate and 3,300 graduate students. 2,500 students graduated in the 2024-2025…
Undergraduate, graduate, and professional education and research across a broad array of academic domains.
Throughout its history, pomona college has educated men and women of exceptional promise. we gather individuals, regardless of financial circumstances, into a small residential community that is strongly rooted in southern california yet…
The central mission of the university of southern california is the development of human beings and society as a whole through the cultivation and enrichment of the human mind and spirit. the principal means by which our mission is…
The Museum of Modern Art is a private, non-profit institution chartered by the State of New York Department of Education in 1929 to foster public awareness of modern and contemporary art. (Continued in Schedule O)
The mission of lowell observatory is to pursue the study of astronomy, especially the study of our solar system and its evolution; to conduct pure research in astronomical phenomena; and to maintain quality public education and outreach…
Education and Research
See Form 990, Part I, Line 1, Description of Organization Mission.
For reference, the grantee most central to the portfolio’s shape is San Francisco Symphony and the most unlike its peers is Piedmont Triad Charitable Foundation D/B/a Wyndham Championship. 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 48 years old; the field is 16. You back the established end — and your money leans older still.
The field is 22% startups (under 5 years old) — 0% of your grantees by number, and just 0% of your money.
The orgs you fund almost never close — 0.0% lost their exemption, against 13% 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.
40 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. 40 of the 63 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 Bowdoin College ↗
- Who funds Trustees of Dartmouth College ↗
- Who funds THE PENINSULA BRIDGE PROGRAM ↗
- Who funds Episcopal Impact Fund FKA Episcopal Charities ↗
- Who funds International Rescue Committee INC ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds University of Michigan ↗
- Who funds Teach for America Inc ↗
- Who funds HILLSBOROUGH SCHOOLS FOUNDATION ↗
- Who funds SMITHSONIAN INSTITUTION ↗
- Who funds SAN FRANCISCO MUSEUM OF MODERN ART ↗
- Who funds CRYSTAL SPRINGS UPLANDS SCHOOL ↗
- Who funds SAN FRANCISCO SYMPHONY ↗
- Who funds LIFEMOVES ↗
- Who funds AMERICAN CONSERVATORY THEATRE FOUNDATION ↗
- Who funds CORPORATION OF THE FINE ARTS MUSEUMS ↗
- Who funds EQUAL JUSTICE INITIATIVE ↗
- Who funds GALLATIN VALLEY LAND TRUST ↗
- Who funds FRIENDS OF BIG SKY EDUCATION ↗
- Who funds Eagle Mount ↗
- Who funds MONTEREY BAY AQUARIUM FOUNDATION ↗
- Who funds SAN FRANCISCO BALLET ASSOCIATION ↗
- Who funds PIEDMONT TRIAD CHARITABLE FOUNDATION D/B/A WYNDHAM CHAMPIONSHIP ↗
- Who funds FOUNDATION FOR A COLLEGE EDUCATION ↗
- Who funds MUSEUM OF THE ROCKIES 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: Silicon Valley Community Foundation · National Philanthropic Trust · The Goldman Sachs Charitable Gift Fund · The San Francisco Foundation · Morgan Stanley Global Impact Funding Trust Inc · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · Charities Aid Foundation America · American Endowment Foundation · Vanguard Charitable Endowment Program · The Bank of America Charitable Foundation Inc · Donor Advised Charitable Giving Inc · American Online Giving Foundation 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 Storm Castle 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 Storm Castle Foundation?
Find your warmest path to Storm Castle 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.