· Private foundation
The Zaffaroni 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 $10k1 grant · $5k
- $50k–250k2 grants · $280k
| Recipient | Amount |
|---|---|
| BOYS & GIRLS CLUB OF THE PENINSULA | $150,000 |
| BOYS & GIRLS CLUB OF THE PENINSULA | $130,000 |
| Ashland Parks Foundation | $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.
Your human-services grants (FY17–19, $8k) land where the poverty rate runs at 7%, against an area that typically sits at 8%. 0% of those dollars go to grantees based in above-average-need neighborhoods. Your grants skew toward lower-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 +106% since the first grant, against -17% for the ones you funded once.
9 repeat relationships — 2 still active in FY2024, 7 since wound down.
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, 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
- BGBOYS & GIRLS CLUBS OF THE PENINSULA8× · 2017–2024 · $1.1M · revenue +133%
- POPENINSULA OPEN SPACE TRUST3× · 2017–2019 · $30k · revenue +164%
- APASHLAND PARKS FOUNDATION4× · 2020–2024 · $20k · revenue +45%
Funded once
ASANTE FOUNDATIONone grant, 2022 · $25k · revenue -82%- FCFirst Congregational United Church of Christone grant, 2022 · $10k
- SUSTANFORD UNIVERSITY OFFICE OF MEDICAL CENTER DEVELOPMENTone grant, 2017 · $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.
To ensure coast redwood forests in the santa cruz mountains thrive for generations to come. since 1900, sempervirens has protected more than 36,000 acres. learn more about our mission, vision, and strategic plan through 2030 at:…
MISSION STATEMENT: MISSION: CARING FOR OUR PATIENTS FIRST AND OUR PEOPLE ALWAYS. VISION: TO BE THE MOST COMPREHENSIVE, INTEGRATED AND CONNECTED HEALTH SYSTEM FOR GETTING AND STAYING WELL. VALUES: EXCELLENCE - We deliver high-quality,…
To ensure every companion animal has access to quality medical care, compassionate shelter, and a loving home.
Mission statement: mission: caring for our patients first and our people always. vision: to be the most comprehensive, integrated and connected health system for getting and staying well. values: excellence - we deliver high-quality,…
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 mission of the san diego history center is to preserve our region's history - tell the diverse story of our region's past, present, and future; educate and enrich our community; and foster civic pride.
See schedule osfmoma believes the art of our time is vital and shares it with passion and purpose, and that art and the creative process can open minds and help build a better world. for that reason, we assemble unparalleled collections,…
To change the future for nature and humanity by conserving birds of prey worldwide.
The Chile-California Council is a San Francisco-based nonprofit dedicated to developing and promoting joint endeavors and cooperative relations between Chile and California, as well as individuals, legal entities and other institutions in…
The mission of southern california university of health sciences (scu) is to educate students as competent, caring and successful practitioners of integrative healthcare. the university is committed to providing excellence in academics,…
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…
For reference, the grantee most central to the portfolio’s shape is Peninsula Humane Society & Spca and the most unlike its peers is San Francisco Opera Association. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
12 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. 12 of the 23 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 BOYS & GIRLS CLUBS OF THE PENINSULA ↗
- Who funds SAN FRANCISCO OPERA ASSOCIATION ↗
- Who funds PENINSULA OPEN SPACE TRUST ↗
- Who funds ASANTE FOUNDATION ↗
- Who funds ASHLAND PARKS FOUNDATION ↗
- Who funds PEACE HOUSE ↗
- Who funds CALIFORNIA FIRE FOUNDATION ↗
- Who funds THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY ↗
- Who funds MENLO CHARITY HORSE SHOW INC ↗
- Who funds GEOHAZARDS INTERNATIONAL ↗
- Who funds 10000 DEGREES ↗
- Who funds PENINSULA HUMANE SOCIETY & SPCA ↗
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: Vanguard Charitable Endowment Program · 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 The Zaffaroni 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.