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New York · Private foundation

High Tide 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.

$2.3M
Granted FY2024(still arriving)
2
Grants FY2024
1
Organizations funded FY2023
100%
First-time grantees FY2023
Read the full brief
Median grant, FY2024
$2,000,000
Largest grant, FY2024
$2,000,000
Organizations funded a year
1 to 83
FY2017 to FY2023
States reached, FY2024
2
Total assets, FY2024
$141M
Applications
Preselected organizations only
Per its most recent filing; check its own site

How open it is to new grantees

In FY2023, 100% of the organizations High Tide Foundation funded were first-time grantees, receiving 100% of its grant dollars.

New vs renewed · share of each year

In FY2023, 0% of grant dollars renewed an existing relationship; $10k went to new ones.

50%100%’19’20’21’22’23
RenewedFirst-time

Where new relationships form · theme of each grantee’s first grant

’19’20’21’22’23
EnvironmentInternationalCommunity ImprovementScience & TechPublic BenefitCivil RightsOther
How this is measured
First-time means a grantee’s first year in the filing window; renewed means funded in an earlier year too. The renewed share climbs naturally as a portfolio matures, so the signal is a year that bucks it (a wave of new grantees). The earliest year is left-censored: relationships that predate the data read as new. Theme is the grantee’s IRS cause.
The numbers by year
Fiscal yearOrganizations fundedTo those organizationsFirst-time grantees
FY2024still arriving2$2.3M100%
FY20231$10k100%
FY20221$312k0%
FY20217$3.1M29%
FY202036$9.4M42%
FY201964$18M84%
FY201783$9.6Mn/a
99% classified

What it funded, over time

Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.

Environment$34MPhilanthropy$3.6MEducation$3.3MHealth$1.6MInternational$855kScience & Tech$640kPublic Benefit$590kSocial Science$333kOther$0

Where its grants go

Grant dollars by states, across the years we hold.

Which US states its grants reach

ME
IL
MI
NY
MA
OR
OH
PA
NJ
CT
RI
CA
CO
KY
WV
VA
MD
AZ
NM
TN
SC
DC
GA
TX
FL

Top grantees

Largest recipients by total granted, FY2017 to FY2024, and the share of each one’s budget the grants supplied at peak.

Show all 104 grantees
All grantees of High Tide Foundation by total granted
GranteeTotal grantedYearsShare of their budget
Cool Effect Inc$6,000,140258%
The Partnership Project Inc$1,250,00023%
Environmental Defense Fund Incorporated$1,010,81120%
South Kent School Corporation$1,001,00018%
The Jeremy and Hannelore Grantham Environmental Trust$1,000,00017%
Conservative Energy Network$912,000211%
Climateworks Foundation$891,24911%
Sustainable Markets Foundation$813,12525%
Rocky Mountain Institute$755,58521%
American Flood Coalition Inc$750,000211%
Advanced Energy Institute$665,50027%
George Mason University Foundation Inc$600,00020%
Bowdoin College$528,00010%
University of California San Francisco Foundation$506,96920%
Ceres Inc$380,00031%
Cdp North America Inc$375,00032%
Yale University$371,5681n/a
Activate Global Inc$350,00019%
The Rand Corporation$333,33410%
Oil Change International Inc$325,000110%
Taxpayers for Common Sense$310,000212%
Center for International Environmental Law Inc$300,00017%
Environmental Integrity Project$300,00025%
Stand$250,00016%
Institute for Governance and Sustainable Development$250,00012%
Deployus Inc$220,000111%
Rep Environmental Education Foundation$210,000248%
Adm Capital Foundation Inc$200,000138%
United Nations Foundation Inc$200,00020%
Clean Air Task Force Inc$200,00012%
Goodpower Education Fund Inc$200,00024%
Vote Solar$200,00013%
Solar United Neighbors Inc$193,00014%
Greenfaith Inc$170,00027%
Worldview Development USA Inc$155,0001100%
The Niskanen Center Inc$150,00022%
CalCef Innovations$120,00015%
Stockholm Environment Institute US Inc$111,96532%
Earthjustice$100,00010%
Voices for Children$100,0001n/a
Texas SolarStorage Association$100,000119%
World Resources Institute$81,09410%
Partnership for Transparency Fund Inc$75,000115%
International Collaborative For$61,0001n/a
Siempre Unidos$60,000113%
Sierra Buttes Trail Stewardship$50,00022%
Yale University$50,0001n/a
Texas Organizing Project Education Fund$50,00011%
State Voices$50,00010%
Jolt Initiative$50,00014%
Marin Trail Stewards$48,000234%
Pan-Massachusetts Challenge Inc$40,90010%
Dickinson College$30,00010%
The Bay School of San Francisco$30,00010%
Bipartisan Policy Center Action Inc$25,00011%
Rare$25,00010%
San Domenico School$25,0001n/a
Capital Public Radio Fdba Kxpr/Kxjz Inc$25,00020%
Center for American Progress$25,00010%
Amazon Frontlines$25,00011%
Berea College$20,00010%
Virginia Organizing Inc$20,00020%
Medshare International Inc$17,00010%
Trees Water and People$16,00021%
Canal Alliance$15,00010%
Halleck Creek Ranch$15,00012%
Forest Trends Association$15,00010%
Sustainable Berea Inc$15,000114%
Aim High$12,0001n/a
Beginning With Children Foundation Inc$10,00010%
CONSULTATIVE GROUP ON BIOLOGICAL DIVERSITY INC Biodiversity Funders Grp$10,00010%
Creo Inc$8,5001n/a
Planned Parenthood Federation of America Inc$7,50010%
San Francisco General Hospital Foundation$5,00010%
Community Venture Partners Inc$5,00013%
The Art Institute of Chicago$5,00010%
Governor Dummer Academy the Governor's Academy$5,00010%
Trips for Kids National$5,00012%
By the Bay Health$5,00010%
Arca$4,00010%
Coalfield Development Corporation$3,00010%
Detroit Food & Entrepreneurship Academy$3,00011%
League of Conservation Voters Inc$2,50010%
World Wildlife Fund Inc$2,00010%
Marin General Hospital Foundation$2,00010%
Apa Family Support Services$2,0001n/a
Bonita House Inc$2,00010%
Globalgiving Foundation Inc$1,50010%
San Francisco Education Fund$1,00010%
Animal Welfare Institute$1,00010%
The Committee for the Great Salt Pond$1,0001n/a
Adopt a Family of Marin$1,00010%
High Watch Recovery Center Inc$1,00010%
Asian Law Caucus$1,00010%
Kqed Inc$1,00010%
Global AIDS Interfaith Alliance (Gaia)$50010%
Accion International$50010%
The Bridge School$30010%
Center for Domestic Peace$30010%
Audubon Canyon Ranch Inc$20010%
Marin Agricultural Land Trust$20010%
Lark Theater$20010%
Marin Humane Society$20010%
Marin Audubon Society$10010%

Plus 53 recipients with no EIN on record ($19M), not named here.

Where it is load-bearing

High Tide Foundation supplied at least a quarter of the budget for 5 of its grantees at some point. The chart plots its 95 largest grantees; load-bearing ones sit top left.

25%50%75%100%$1.0M$10M$100Mgrantee revenue →↑ funder's share of their budgetCool Effect Inc: $6,000,140 over 2y, 58% of budgetThe Partnership Project Inc: $1,250,000 over 2y, 3.0% of budgetEnvironmental Defense Fund Incorporated: $1,010,811 over 2y, 0.3% of budgetSouth Kent School Corporation: $1,001,000 over 1y, 8.0% of budgetThe Jeremy and Hannelore Grantham Environmental Trust: $1,000,000 over 1y, 6.6% of budgetConservative Energy Network: $912,000 over 2y, 11% of budgetClimateworks Foundation: $891,249 over 1y, 0.9% of budgetSustainable Markets Foundation: $813,125 over 2y, 4.5% of budgetRocky Mountain Institute: $755,585 over 2y, 1.1% of budgetAmerican Flood Coalition Inc: $750,000 over 2y, 11% of budgetAdvanced Energy Institute: $665,500 over 2y, 7.1% of budgetGeorge Mason University Foundation Inc: $600,000 over 2y, 0.3% of budgetBowdoin College: $528,000 over 1y, 0.2% of budgetUniversity of California San Francisco Foundation: $506,969 over 2y, 0.0% of budgetCeres Inc: $380,000 over 3y, 0.8% of budgetCdp North America Inc: $375,000 over 3y, 2.3% of budgetActivate Global Inc: $350,000 over 1y, 9.4% of budgetThe Rand Corporation: $333,334 over 1y, 0.1% of budgetOil Change International Inc: $325,000 over 1y, 9.7% of budgetTaxpayers for Common Sense: $310,000 over 2y, 12% of budgetCenter for International Environmental Law Inc: $300,000 over 1y, 6.8% of budgetEnvironmental Integrity Project: $300,000 over 2y, 4.5% of budgetStand: $250,000 over 1y, 5.7% of budgetInstitute for Governance and Sustainable Development: $250,000 over 1y, 2.2% of budgetDeployus Inc: $220,000 over 1y, 11% of budgetRep Environmental Education Foundation: $210,000 over 2y, 48% of budgetAdm Capital Foundation Inc: $200,000 over 1y, 38% of budgetUnited Nations Foundation Inc: $200,000 over 2y, 0.1% of budgetClean Air Task Force Inc: $200,000 over 1y, 1.8% of budgetGoodpower Education Fund Inc: $200,000 over 2y, 4.4% of budgetVote Solar: $200,000 over 1y, 2.9% of budgetSolar United Neighbors Inc: $193,000 over 1y, 3.8% of budgetGreenfaith Inc: $170,000 over 2y, 7.4% of budgetWorldview Development USA Inc: $155,000 over 1y, 100% of budgetThe Niskanen Center Inc: $150,000 over 2y, 1.6% of budgetCalCef Innovations: $120,000 over 1y, 4.5% of budgetStockholm Environment Institute US Inc: $111,965 over 3y, 1.8% of budgetEarthjustice: $100,000 over 1y, 0.1% of budgetTexas SolarStorage Association: $100,000 over 1y, 19% of budgetWorld Resources Institute: $81,094 over 1y, 0.1% of budgetPartnership for Transparency Fund Inc: $75,000 over 1y, 15% of budgetSiempre Unidos: $60,000 over 1y, 13% of budgetSierra Buttes Trail Stewardship: $50,000 over 2y, 1.9% of budgetTexas Organizing Project Education Fund: $50,000 over 1y, 0.6% of budgetState Voices: $50,000 over 1y, 0.3% of budgetJolt Initiative: $50,000 over 1y, 3.5% of budgetMarin Trail Stewards: $48,000 over 2y, 34% of budgetPan-Massachusetts Challenge Inc: $40,900 over 1y, 0.1% of budget

Tap a dot to name the grantee.

How this is measured
Share of budget is the funder’s grant in a year over the grantee’s total revenue that year, at its highest across the years we hold; revenue is from all sources. Only grantees confirmed against their own filings, whose grants do not exceed their revenue, are plotted: the largest 95.

Nonprofits that may fit its grantmaking

Co-funders

Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.

Climateworks FoundationCA33.8× affinity14 shared granteesties to 11 of 11Hover any node to trace its alignments.Compare side by side →

Open a dossier: Climateworks Foundation · The William & Flora Hewlett Foundation · United States Energy Foundation · Jewish Community Federation of San Francisco the Peninsula Marin & Sonoma · The Energy Foundation · Marin Community Foundation · The David and Lucile Packard Foundation · Rockefeller Brothers Fund Inc · The Schmidt Family Foundation · Gordon E and Betty I Moore Foundation · Sustainable Markets Foundation · New Venture Fund

How this is measured
Affinity is a Gamma-Poisson posterior co-funding rate, re-centered on the typical rate, so thin evidence shrinks toward no signal. Overlap is association, not proof of shared intent.

Compare High Tide Foundation with peer funders

Warm introductions · Powered by PlinthPlus

How do I get to High Tide Foundation?

Find your warmest path to High Tide 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.

About High Tide Foundation

How much does High Tide Foundation give?
High Tide Foundation reported 2 grants totaling $2,333,334 in its FY2024 IRS filing. It funded between 1 and 83 organizations a year over FY2017 to FY2023.
What does High Tide Foundation fund?
By grant dollars over FY2017 to FY2024, its largest causes are Environment (74%), Philanthropy (8%), Education (7%).
Who are High Tide Foundation's largest grantees?
By total granted over FY2017 to FY2024: Cool Effect Inc ($6.0M), The Partnership Project Inc ($1.3M), Environmental Defense Fund Incorporated ($1.0M).
Does High Tide Foundation fund new organizations?
In FY2023, 100% of the organizations it funded were first-time grantees.
Does High Tide Foundation accept unsolicited applications?
Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
Which funders back the same organizations as High Tide Foundation?
Its strongest co-funders, measured against what their size predicts, include Climateworks Foundation, The William & Flora Hewlett Foundation, United States Energy Foundation.
Where is High Tide Foundation based?
High Tide Foundation is based in NY.

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 167 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 2024, released 2024. Filings run roughly 12 to 24 months behind; figures are dated accordingly.

Source object · view filing

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