· Private foundation
The Tietz Family 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 $10k7 grants · $28k
- $10k–50k6 grants · $75k
| Recipient | Amount |
|---|---|
| CENTER FOR SPIRITUAL LIVING | $20,000 |
| LANDPATHS | $15,000 |
| ALEXANDER VALLEY FILM SOCIETY | $10,000 |
| RUSSIAN RIVERKEEPER | $10,000 |
| PAJARO VALLEY SHELTER SERVICE | $10,000 |
| CERES COMMUNITY PROJECT | $10,000 |
| THE LIVING ROOM LIFE CENTER | $5,000 |
| PROJECT QUETZAL | $5,000 |
| STEWARDS OF THE COAST & REDWOODS | $5,000 |
| CORAZON HEALDSBURG | $5,000 |
| FARM TO PANTRY | $5,000 |
| Individual grant recipient | $2,000 |
| FOOD FOR THOUGHT | $1,000 |
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, $95k) 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.
20 repeat relationships — 12 still active in FY2024, 8 since wound down; 1 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, 95% of grant dollars renewed an existing relationship; $5k 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
- SRSANTA ROSA SYMPHONY ASSOCIATION4× · 2017–2020 · $100k · revenue +51%
- RRRussian Riverkeeper5× · 2020–2024 · $50k · revenue +125%
- PVPAJARO VALLEY SHELTER SERVICES5× · 2020–2024 · $40k · revenue +63%
Funded once
- PTPAUL TIETZ DONOR ADVISED FUNDone grant, 2020 · $2.1M
- KWKOOTENAI WINTER SPORTS SKI EDUCATION FOUNDATIONINCone grant, 2021 · $5k · revenue +11%
- APALAMEDA POINT COLLABORATIVEgraduatedone grant, 2020 · $5k · revenue +317%
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.
Sustainable Conservation advances the collaborative stewardship of Californias land, air, and water for the benefit of nature and people. For over three decades, Sustainable Conservation has built coalitions of people with different…
Sonoma County Conservation Action's mission is to better our quality of life in Sonoma County for all generations, through educating and directly engaging the public on local environmental issues and policies using grassroots organizing.
Address the homeless crisis in California.
We conserve the lands and waters of California's heartland.
At Yosemite Rivers Alliance, we unite conservation and community to protect and restore the three rivers that ?ow through the Yosemite Regionthe Tuolumne, Stanislaus, and Merced.
Homes for Sonoma is a nonprofit developer creating quality workforce housing options that support safe and sustainable community, and finds efficient, scalable solutions to address the housing crisis in Sonoma County and throughout…
To protect, restore, and sustain the natural and human environment in Amador and Calaveras counties for the benefit of current and future generations.
Our mission is to protect local nature and farmland to ensure a healthy environment for everyone.
To serve our community by providing direct access to sustainable sources of fresh produce and other unique foods, and provide education about food issues, both local and beyond.
Fort Ross Conservancy (FRC) is the not-for-profit partner of the Russian River Sector, Sonoma/Mendocino District of California State Parks. FRC works to preserve the nature and culture of the Sonoma Coast for the benefit of the public.
For reference, the grantee most central to the portfolio’s shape is Stewards of the Coast and Redwoods and the most unlike its peers is Fisher River Valley Fire Rescue Auxiliary. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
Your grantees are a median of 26 years old; the field is 19. You back the established end — and your money leans older still.
The field is 18% 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 10% 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.
20 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. 20 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 SONOMA COUNTY COMMUNITY FOUNDATION ↗
- Who funds SANTA ROSA SYMPHONY ASSOCIATION ↗
- Who funds LandPaths ↗
- Who funds Russian Riverkeeper ↗
- Who funds PAJARO VALLEY SHELTER SERVICES ↗
- Who funds THE CERES COMMUNITY PROJECT ↗
- Who funds TRUE WEST FILM CENTER ↗
- Who funds THE CARTER CENTER INC ↗
- Who funds SCOPA HAS A DREAM INC DBA CORAZON HEALDSBURG ↗
- Who funds Farm to Pantry ↗
- Who funds Womens Recovery ServicesA Unique Place ↗
- Who funds Fisher River Valley Fire Rescue Auxiliary ↗
- Who funds Stewards of the Coast and Redwoods ↗
- Who funds FOOD FOR THOUGHT ↗
- Who funds Sonoma County Beekeepers Association ↗
- Who funds KOOTENAI WINTER SPORTS SKI EDUCATION FOUNDATIONINC ↗
- Who funds ALAMEDA POINT COLLABORATIVE ↗
- Who funds Sonoma Ecology Center ↗
- Who funds The Climate Center ↗
- Who funds REDWOOD GOSPEL MISSIONS ↗
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: Sonoma County Community Foundation · Sonoma County Vintners Foundation · McNabb Foundation · The Heck Foundation · Marin Community Foundation · Anthony Crabb and Barbara Grasseschi Foundation · Bothin Foundation · The San Francisco Foundation · Trione Foundation · The Joseph and Vera Long Foundation · Clif Family Foundation · St Louis Community 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 The Tietz Family 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 Tietz Family Foundation?
Find your warmest path to The Tietz Family 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.