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Tidemark Foundation at a glance

· Private foundation

Tidemark Foundation

Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.

$73k
Granted FY2025still arriving
11
Grants FY2025still arriving
3
States reached
$30k
Largest
01What it fundsRead
02The needRead
03Its fieldRead
01What it funds
01FY2025 · 11 grants

Where the money goes

Grants by size, and the largest recipients.

By grant size · FY2025

  • Under $10k9 grants · $23k
  • $10k–50k2 grants · $50k
$3,178
Median grant
3
States reached
$3.2M
Total assets
Largest grants
RecipientAmount
UC SANTA BARBARA FOUNDATION$30,000
IRVINE SOCCER CLUB$20,000
MISSION PLASTICOS$5,000
NATIONAL MS SOCIETY$3,178
ALZHEIMER'S ASSOCIATION$3,178
JF SHEA THERAPEUTIC RIDING CENTER$3,178
LEAGUE TO SAVE LAKE TAHOE$3,178
SERVITE HIGH SCHOOL - SERVITE RUGBY$2,500
SECOND HARVEST FOOD BANK OF ORANGE COUNTY INC$1,000
FR33 PLAY PROJECT$1,000
WORLD VISION INC$590
02The need
02

Does the money reach high-need areas?

Each grant placed by the hardship in its grantee’s ZIP, against the area’s typical level.

show:

Dollar for dollar, its grants (FY25–25) land where the poverty rate runs at 12%, against an area that typically sits at 11%. 51% of its dollars go to grantees based in above-average-need neighborhoods. Its grants spread fairly evenly across need levels.

area typical 11%LEAGUE TO SAVE LAKE TAHOE: $3k → 8%SECOND HARVEST FOOD BANK OF ORANGE COUNTY INC: $1k → 10%NATIONAL MS SOCIETY: $3k → 14%UC SANTA BARBARA FOUNDATION: $30k → 14%ALZHEIMER'S ASSOCIATION: $3k → 14%SERVITE HIGH SCHOOL - SERVITE RUGBY: $3k → 10%IRVINE SOCCER CLUB: $20k → 10%MISSION PLASTICOS: $5k → 10%JF SHEA THERAPEUTIC RIDING CENTER: $3k → 10%0%20%40%50%more need →
grant to an above-average-need area below average· circle size = grant amount
How this is measured
Matched: human-services grants are those whose grantee’s IRS cause code is Human Services. Placed by people below the poverty line in the grantee’s ZIP, averaged from the tracts in that ZIP.
How this is measured
US grants placed by each grantee’s ZIP, which can differ from where services are delivered. Need from public data (U.S. Census/ACS, CDC PLACES, Eviction Lab, USDA), shown as context about the area, never attributed to the funder’s giving.
03Its field

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.

1
University of Southern California

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…

Education
2
Doheny Eye Institute

To further the conservation, improvement and restoration of human eyesight" (mrs. doheny - 1947).

—
3
American Board of Medical Specialties

In collaboration with its member boards, abms creates standards for initial and continuing board certification of physicians and medical specialists. (continued in sch o)

—
4
Federation of State Medical Boards of the United States Inc

The fsmb serves as the voice for state medical boards, supporting them through education, assessment, research and advocacy while providing services and initiatives that promote patient safety, quality health care and regulatory best…

Health
5
Ocean Conservancy

Ocean conservancy unites science, people, and policy to protect our ocean, today and for generations to come.

Environment
6
The Union of Concerned Scientists Inc

The union of concerned scientists puts rigorous, independent science into action, developing solutions and advocating for a healthy, safe, and just future.

International
7
Society for Vascular Surgery

To improve the prevention, diagnosis, and management of patients withvascular disease by promoting clinical and basic research; providingcontinuing education; developing post-graduate training; advocating onbehalf of members; promoting the…

—
8
Sustainable Fisheries Partnership Foundation

To engage and catalyze global seafood supply chains in rebuilding depleted fish stocks and reducing the environmental impacts of fishing and fish farming.

Animals
9
Banner -University Medical Group

Assist banner health complete its mission to make health care easier so life can be better by providing integrated & coordinated care & population health management.

Health
10
Brightfocus Foundation

Brightfocus foundation funds exceptional research worldwide to defeat alzheimer's disease, macular degeneration, and glaucoma and provides expert information on these heartbreaking diseases. please refer to schedule o for a complete…

Health
11
Foundation for Sarcoidosis Research

The foundation for sarcoidosis research (fsr) is the leading international organization dedicated to finding a cure for sarcoidosis and improving care for sarcoidosis patients through research, education, and support. since its…

Philanthropy
12
Southern California University of Health Sciences

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,…

Education
How this is measured
The grantee most central to the portfolio’s shape is Uc Santa Barbara Foundation; the most unlike its peers is League to Save Lake Tahoe. Resemblance is measured on each organization’s own IRS 990 mission text; it reflects how work is described, not its quality or impact.
03the grantee network

9 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. 9 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.

0
Load-bearing (≥25% of a budget)
3
Early backer (in before they grew)
9/9
Grantees still filing
3/9
Grew since first funded

Where the money sits, by cause and then by grantee

UC SANTA BARBARA FOUNDATION: $30,000 · EducationUC SANTA BARBARA FOUNDATIONIRVINE SOCCER CLUB INC: $20,000 · Recreation & SportsIRVINE SOCCER CLUB INCJF SHEA THERAPEUTIC RIDING CENTER INC FKA FRAN JOSWICK THERAP RIDING CTR INC: $3,178 · Recreation & SportsJF SHEA THERAPEUTIC RIDING CENTER IN…Mission Plasticos: $5,000 · HealthMission PlasticosNATIONAL MULTIPLE SCLEROSIS SOCIETY: $3,178 · HealthNATIONAL MULTIPLE…ALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC: $3,178 · HealthALZHEIMER'S DISEA…SERVITE HIGH SCHOOL - SERVITE RUGBY: $2,500 · OtherFR33 PLAY PROJECT: $1,000 · OtherLEAGUE TO SAVE LAKE TAHOE: $3,178 · ReligionSECOND HARVEST FOOD BANK OF ORANGE COUNTY INC: $1,000 · Food & NutritionWORLD VISION INC: $590 · International
Education$30,000Recreation & Sports$23,178Health$11,356Other$3,500Religion$3,178Food & Nutrition$1,000International$590

Each grantee by its size and the funder’s share of it; top left is load-bearing

25%50%75%100%$10M$100Mgrantee revenue →↑ funder's share of their budgetUC SANTA BARBARA FOUNDATION: $30,000 over 1y, 0.0% of budgetNATIONAL MULTIPLE SCLEROSIS SOCIETY: $3,178 over 1y, 0.0% of budgetJF SHEA THERAPEUTIC RIDING CENTER INC FKA FRAN JOSWICK THERAP RIDING CTR INC: $3,178 over 1y, 0.0% of budgetALZHEIMER'S DISEASE & RELATED DISORDERS ASSOCIATION INC: $3,178 over 1y, 0.0% of budgetSECOND HARVEST FOOD BANK OF ORANGE COUNTY INC: $1,000 over 1y, 0.0% of budgetWORLD VISION INC: $590 over 1y, 0.0% of budget
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.

On method. Every financial figure here is read from IRS e-file XML, the funder’s own 990/990-PF, and from the multi-year returns of the 11 grantees we resolved, each linked to its source. Grantee outcomes are each organization’s own program-service reporting (Form 990, Part III), read as association with funding, never as caused by it. Low-confidence name matches are suppressed rather than guessed. How we build these →

How this is measured
Each figure carries one of six labels. Filed is what the funder reported on its return. Official is another government record about an organization, such as a federal award or a charity register, joined by name where no shared identifier exists. Resolved is an identity we worked out where the filing named a recipient without an EIN, kept only above a measured confidence threshold. Computed is arithmetic over those, like themes, portfolio clusters and co-funder strength. Context is a statistic about a place rather than about an organization, which is what the need overlay is: it describes the area a grantee’s address sits in, not where its work lands. Inferred is drawn by a model from text, like the partnerships read out of public news and organization websites. Each is labeled where it appears.

Generated from the IRS Form 990-PF e-file return for fiscal year 2025, released 2025. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

Play a game based on Tidemark’s filings →

More from the funding graph

The unnamed billions
grants reported with no recipient in the public record
The regranting layer
51% of grant dollars land in the regranting layer
The DAF merry-go-round
$9.7B circulates between donor-advised funds
The endowment market
who holds foundation money, and what just moved
The camps
funders cluster by geography, not ideology
By state
where grant money is based, and what stays home