· Community foundation
Mammoth Mountain Community Foundation Inc
Mammoth Mountain Community Foundation believes that opportunity and access to the Eastern Sierra should be open and inclusive to all.
What you funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year — across FY2018–2024.
Where the money goes
Your grants by size, and where they go.
The 37 grants below total $721,384 — the rows itemised in this filing. The $966,539 headline is the total grant expense reported on the return, so the remaining $245,155 is giving the schedule does not break out: grants under the $5,000 itemisation floor, grants to individuals, and grants reported on other schedules. Every figure below describes the itemised rows only.
By grant size · FY2024
- Under $10k16 grants · $87k
- $10k–50k18 grants · $285k
- $50k–250k3 grants · $349k
| Recipient | Amount |
|---|---|
| Mammoth Unified School District | $150,000 |
| Bishop Union High School | $120,069 |
| Mammoth High School | $78,700 |
| Bishop Home Street Middle School | $49,382 |
| Mammoth Elementary School | $44,701 |
| Bishop Elementary School | $27,268 |
| Lee Vining Elementry School | $15,000 |
| Round Valley Emem School PTO | $14,168 |
| University of CA Santa Barbara | $13,170 |
| Mammoth Middle School | $11,500 |
| Bishop Area Bike Organization | $10,000 |
| Owens Valley Unified School Distric | $10,000 |
| Eastern Sierra Nordic Ski Associati | $10,000 |
| Mammoth Lakes Football Club | $10,000 |
| Eastern Sierra Unified School Distr | $10,000 |
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 (FY24–24, $5k) 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.
19 repeat relationships — 12 still active in FY2024, 7 since wound down; 14 grantees were first funded in FY2024 (too recent to call).
How the two cohorts compare
Organizations
Total granted
Still filing today
New vs renewed · share of each year
In FY2024, 84% of grant dollars renewed an existing relationship; $112k 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
- MUMammoth Unified School District7× · 2018–2024 · $1.3M
- BUBishop Union High School5× · 2019–2024 · $253k
- BHBishop Home Street Middle School5× · 2019–2023 · $76k
Funded once
- BPBig Pine Ski Clubone grant, 2020 · $15k
- MEMammoth Elementary Schoolone grant, 2023 · $10k
- BPBig Pine Ski And Snowboard Clubone grant, 2022 · $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.
Support morton ranch athletes
Support high school athletics
NPHS MTB Boosters is organized to support the students, parents, teachers, and administrative staff of The Newbury Park High School Mountain Biking program by raising funds, conducting events, and recruiting volunteers.
Providing support to & funding for service projects internationally, community, vocationally, & youth oriented. Generally in connection with & related to projects of Rotary International.
Sammamish High School Boosters provides funding for athletic, extra-curricular, and academic needs of Sammamish High School for the benefit of students and educators where funding is not otherwise available from the state or local school…
Eugene Rowing Club strives to build a team-oriented program. Our student athletesdevelop personal character, time management skills, an ethic of cooperation, and physical fitness with a team culture of crew and rowing. Athletes learn to…
High school athletics boosters association
Promotion of, and access to, the sport of nordic skiing for the greater Madison WI community of all ages.
Improve school & community relations
Middle and high school MT bike team
Encourage and support student activities
For reference, the grantee most central to the portfolio’s shape is Eastern Sierra Nordic Ski Association and the most unlike its peers is Eastside Student Center. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
9 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. 9 of the 44 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 MAMMOTH HIGH SCHOOL BOOSTER CLUB ↗
- Who funds EASTERN SIERRA NORDIC SKI ASSOCIATION ↗
- Who funds BISHOP ELEMENTARY SCHOOLS TOGETHER FOUNDATION ↗
- Who funds Bishop Swim Team ↗
- Who funds MAMMOTH LAKES RECREATION ↗
- Who funds EASTSIDE STUDENT CENTER ↗
- Who funds MONO ARTS COUNCIL ↗
- Who funds BOUNDLESS EMPOWERMENT ↗
- Who funds Rotary Club of Bishop -Sunrise ↗
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 set of overlaps that mostly run through you, not between each other.
Open a dossier: Amazonsmile 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 Mammoth Mountain Community Foundation Inc 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.
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