· Public charity
The Martis Fund
THE MARTIS FUND supports programs to conserve open space; manage and restore habitat and forest lands; and promote opportunities for workforce housing and related community purposes in the martis valley region.
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
- $10k–50k2 grants · $65k
- $50k–250k5 grants · $520k
- $250k+2 grants · $750k
| Recipient | Amount |
|---|---|
| Sierra Community House | $400,000 |
| Tahoe Truckee Community Found | $350,000 |
| CONSERVATION SCIENCE PARTNERS | $150,000 |
| ADVOCATES FOR MENTALLY AMI | $140,000 |
| Tahoe Truckee Community Found | $100,000 |
| CONSERVATION SCIENCE PARTNERS | $80,000 |
| Tahoe Truckee Community Found | $50,000 |
| Sierra Business Council | $33,000 |
| CLEAN UP THE CAYES | $31,500 |
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 (FY24–24, $140k) land where the poverty rate runs at 6%, against an area that typically sits at 9%. 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.
Where the work is directed
The same grants, placed two ways — where each recipient sits, and where its stated purpose earmarks the money.
About 18% of The Martis Fund’s grant dollars are earmarked, by their stated purpose, for a different county than the recipient’s own address — money that lands at a nonprofit in one place but is meant to do its work in another. Read by recipient address, 90% of the giving stays in CA; read by stated purpose it is 84% — less of the work is directed home than the recipients' locations suggest.
Recipient view: each grant at its grantee’s ZIP, mapped to a county. Directed view: each grant at the county its stated purpose names, falling back to the recipient’s county when the purpose names no place; US grants only. A county shows only if it carries the top 95% of that view’s dollars. Purposes are read from the foundation’s own 990 grant descriptions.
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 +56% since the first grant, against +37% for the ones you funded once.
13 repeat relationships — 4 still active in FY2024, 9 since wound down; 2 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, 87% of grant dollars renewed an existing relationship; $172k 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
- TRTruckee River Watershed Council6× · 2017–2023 · $3.5M · revenue +212%
- CICRISIS INTERVENTION SERVICES DBA SIERRA COMMUNITY HOUSE5× · 2019–2024 · $1.5M · revenue +248%
- MAMountain Area Preservation Foundation7× · 2018–2024 · $923k · revenue +103% · 86% of their budget
Funded once
- CRCommunity Resources Incone grant, 2023 · $1.0M · revenue -16%
- TDTRUCKEE DONNER LAND TRUSTone grant, 2022 · $298k · revenue -50%
- NFNATIONAL FOREST FOUNDATIONgraduatedone grant, 2020 · $108k · revenue +216%
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 Sierra Fund (TSF) is a non-profit organization with a mission to restore ecosystem and community resiliency in the Sierra Nevada.
Sierra watch secures conservation outcomes to protect the natural resources, mountain communities, and timeless values of the tahoe sierra.
The Foundation envisions a thriving community created through meaningful philanthropy, inclusive communication, and the willingness to explore possibilities together.
The Sierra State Parks Foundation provides critically needed financial and professional support to the Lake Tahoe-Donner Sierra State Parks for Education, Restoration, and Cultural and Environmental Preservation in partnership with…
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.
To advance the natural history, conservation and ecosystem knowledge of the Tahoe region through science, education and outreach.
A membership organization dedicated to developing, promoting, and serving your business and community. Our goal is to sustain a high quality of life by achieving economic vitality, with sensitivity and respect for the environment.
CSERC protects water, wildlife, and wild places of the Northern Yosemite region.
To improve the visual quality of the Tahoe Basin portion of El Dorado County through community education, citizen involvement and enforcecment of litter and nuisance ordinances.
The Friends of the Inyos mission is to protect, and care for, the lands and waters of Californias Eastern Sierra.
We conserve the lands and waters of California's heartland.
Bear Yuba Land Trust exists to conserve and protect the natural, working, and cultural lands in the Bear and Yuba River watersheds and empower a healthy, resilient community through nature access and education.
For reference, the grantee most central to the portfolio’s shape is Tahoe Truckee Community Foundation and the most unlike its peers is Community Resources Inc. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
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 22 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 Truckee River Watershed Council ↗
- Who funds TAHOE TRUCKEE COMMUNITY FOUNDATION ↗
- Who funds CRISIS INTERVENTION SERVICES DBA SIERRA COMMUNITY HOUSE ↗
- Who funds Community Resources Inc ↗
- Who funds Mountain Area Preservation Foundation ↗
- Who funds SOUTH YUBA RIVER CITIZENS LEAGUE ↗
- Who funds Conservation Science Partners Inc ↗
- Who funds TRUCKEE DONNER LAND TRUST ↗
- Who funds Stephen J Wampler Foundation Camp WAMP ↗
- Who funds FAMILY RESOURCE CENTER OF TRUCKEE ↗
- Who funds Truckee Trails Foundation Inc ↗
- Who funds Advocates for the Mentally Ill Housing Inc ↗
- Who funds NATIONAL FOREST FOUNDATION ↗
- Who funds Pacific Housing Inc ↗
- Who funds Sierra Business Council ↗
- Who funds CLEAN UP THE CAYES dba CLEAN UP THE LAKE ↗
- Who funds LEAGUE TO SAVE LAKE TAHOE ↗
- Who funds SUGAR PINE FOUNDATION ↗
- Who funds TAHOE FUND ↗
- Who funds TAHOE EXPEDITION ACADEMY 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: Tahoe Truckee Community Foundation · Tahoe Community Foundation · Martis Camp Community Foundation Dba Martis Camp Foundation · Marin Community Foundation · The Corrigan-Walla Foundation · Community Foundation Santa Cruz County · Mightycause Charitable Foundation · The San Francisco Foundation · Truckee Donner Chamber of Commerce · Park L Loughlin Charitable Foundation · Rdh Foundation · Reissa 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 Martis Fund 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 Martis Fund?
Find your warmest path to The Martis Fund 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.