· Private foundation
Diffenbaugh Foundation
Its FY2025 filing reports that it accepted unsolicited grant applications.
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2018 to 2024.
Where the money goes
Grants by size, and the largest recipients.
| Recipient | Amount |
|---|---|
| Vermillion Sea Institute | $7,000 |
| Individual grant recipient | $2,000 |
| Marine Mammal Center | $2,000 |
| The Teaching Well | $1,500 |
| Growing Together Bay Area | $500 |
Does the money reach high-need areas?
Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.
Dollar for dollar, its grants (FY18–25) land where the poverty rate runs at 8%, against an area that typically sits at 7%. 100% of its dollars go to grantees based in above-average-need neighborhoods. Most of its grants land in higher-need ZIPs.
How this is measured
How this is measured
Who it funds again
Organizations funded in more than one year, against those funded once.
Grantees it renews have grown median revenue +37% since the first grant, against 0% for those funded once.
8 repeat relationships: 3 still active in FY2025, 5 since wound down; 2 grantees were first funded in FY2025 (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 FY2025, 85% of grant dollars renewed an existing relationship; $2k went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
Backed again, and grew
- TMTHE MARINE MAMMAL CENTER8× · 2018–2025 · $25k · revenue +93%
- WWILDCARE5× · 2018–2022 · $15k · revenue +368%
- VSVERMILION SEA INSTITUTE5× · 2021–2025 · $13k · revenue +27%
Funded once
- SHSECOND HARVEST OF SILICON VALLEYone grant, 2024 · $1k · revenue 0%
How this is measured
Repeat means funded in two or more distinct years. Growth and survival are read from each grantee’s own subsequent IRS filings.
Closest unfunded matches
The nonprofits that most resemble its grantees but are not funded by it, scored along the direction from the rest of the field toward the portfolio. A resemblance in what they say they do, not a recommendation.
The resource renewal institute facilitates the creation, development and implementation of practical strategies to solve the entire complex environmental problem by addressing it comprehensively.
Wwf's mission is to conserve nature and reduce the most pressing threats to the diversity of life on earth. (continued on schedule o)
Hubbs-SeaWorld Research Institute (the Institute) was organized pursuant to the General Nonprofit Corporation Law of the State of California. The primary purpose for which the Institute was formed is to conduct biological, environmental,…
Nature collective's mission is to drive a passion for nature for all. we think inclusively and diversely when serving those devoid of nature those who remember nature and want to connect back to it and those who have an affinity with…
To promote community stewardship and advance scientific knowledge of watersheds through reserarch, monitoring and education for the benefit of the Sierra Nevada region and beyond.
To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.
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…
Wildlife alliance is the leader in direct protection of forests and wildlife in tropical asia. our mission is to combat deforestation, biodiversity loss, climate change, and poverty by partnering with local communities and governments.…
Our mission is to spark wonder and intellectual curiosity in each child. We achieve this through a purposeful blend of:Engaging academics custom-tailored to each child's abilities, strengths and interests;An unparalleled social-emotional…
Create and publish educational materials, conduct professional development, promote awareness, and sponsor research on the spectacular biological diversity of the State of CA.
How this is measured
8 grantees tracked through their own filings, 2017–2025.
Each grant beside the grantee’s revenue from every source, year by year.
How this is measured
Counted here: distinct organizations funded across 2017 to 2025, not grant rows in a single year, so this will not match the grant count on the cover. 8 of the 11 grantees resolved in that span have returns of their own we could reconcile.
Each grantee is resolved to its own IRS returns. Association, dated; never a causal claim.
Where the money sits, by cause and then by grantee
Each grantee by its size and the funder’s share of it; top left is load-bearing
Grantee by grantee: a decade per organization, before and after funding
A decade per grantee: revenue shaded, grants as bars, all rows on one timeline.
How much its grantees rely on government
Each dot is one organization Diffenbaugh Foundation funds: left to right is the share of its income from government, bottom to top the share from Diffenbaugh Foundation. Bigger dots raise more.
How this is measured
Play a game based on Diffenbaugh’s filings →