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    3. Jeff and Marieke Rothschild Foundation

    Jeff and Marieke Rothschild Foundation

    ActivePhilanthropy & Voluntarism
    PALO ALTO, CA6508047100
    EIN (Tax ID): 83-4574297

    About Jeff and Marieke Rothschild Foundation

    The Jeff and Marieke Rothschild Foundation makes a small number of very large gifts focused on institutional capital and operating needs, primarily in the Bay Area and in conservation. Their funding flows to food security (major support for Second Harvest of Silicon Valley), land and species protection (local land trust and international rewilding), and higher‑education campus infrastructure and operations. Grants are multi‑million and targeted to established organizations rather than many small projects.

    Focus Areas

    Regional food security and emergency food system capacity (Second Harvest of Silicon Valley)Local land conservation and stewardship (Land Trust of Santa Cruz County)Higher education campus infrastructure and operations (Colby College residence hall; UCSF Parnassus campus)Biodiversity and island rewilding/conservation projects (Rewild — Guafo Island project)

    Who They Fund

    school-aged children in African countries (school feeding recipients)smallholder farmers and dairy cooperativescoastal/island ecosystems and marine species

    About Jeff and Marieke Rothschild Foundation

    Jeff and Marieke Rothschild Foundation gives a small number of very large grants, with several awards at or above $5 million in the latest file. The clearest pattern is institutional support: Second Harvest of Silicon Valley received $5.5 million for capital campaign and operating support in 2025, while the University of California San Francisco Foundation and Colby College each received $5 million that same year for campus operations or residence life. That scale continues across the portfolio, where the foundation pairs major operating and capital gifts with project-specific support for conservation, food systems, and research. Environmental and land-protection work is a recurring thread. The Land Trust of Santa Cruz County received $8.1 million for nature conservation in 2023 and another $1 million for general support in 2025, and Rewild received $2.5 million for the Guafo Island project. The foundation also funds organizations tied to food security and human services, including school feeding and dairy development, as well as selected medical, climate, and advocacy projects. Overall, the grants point to an established funder that works through large, targeted awards to organizations with substantial operating or infrastructure needs.

    What Jeff and Marieke Rothschild Foundation Funds

    Food security appears in both Bay Area and international-linked work. Second Harvest of Silicon Valley received $5.5 million for capital campaign and operating support, and Food for Education Foundation Inc received $1.6 million for school feeding programs in Africa. In conservation, the Land Trust of Santa Cruz County received $8.1 million for nature conservation, while Santa Cruz Mountains Trail Stewardship received $250,000 for the Cotoni-Coast Dairies project. The foundation also backed Rewild with $2.5 million for the Guafo Island project and Great Barrier Reef Foundation USA Inc with $500,000 for solutions for protecting coral reefs. Education and campus infrastructure are another clear theme. The University of California San Francisco Foundation received $5 million for Parnassus campus and operations, and President & Trustees of Colby College received $5 million for a residence hall and residence life.

    How Jeff and Marieke Rothschild Foundation Gives

    Typical grants are large: the 25th percentile is $178,900, the median is $225,000, and the 75th percentile is $1,618,750. The pattern is highly concentrated at the top, with multiple multi-million-dollar grants in 2025. Recurring awards show up in several relationships: Second Harvest of Silicon Valley, Land Trust of Santa Cruz County, and Kenyan Kids Foundation each received more than one grant across different years. The foundation is a grantmaker, not an individual-giving or program-related-investment funder. The recent record also shows targeted support types such as operating support, capital campaign funding, and project-specific grants.

    Financial Snapshot

    Annual Giving

    $68.3M

    Total Assets

    $428.2M

    Total Revenue

    $62M

    Total Expenses

    $71.8M

    Typical Grant Size

    Most grants fall between $179K and $1.6M, with a median of $225K.

    25th Percentile

    $179K

    Median

    $225K

    75th Percentile

    $1.6M

    Geographic Reach

    National10 states funded
    Funding intensity
    Low
    High
    Headquarters

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    Privacy PolicyTerms of ServiceSystem Status
    Latest Form 990:
    2025
    Total assets: $428.2M
    3 filings on record
    Find their full 990 filing →
    See If You're a Fit — FreeFree account · instant fit score · similar funders
    research and scientific communities (medical and AI researchers)
    students and campus communities
    youth athletes / program participants (running academy)
    residents of Ethiopia, Kenya, South Sudan

    Giving Approach

    Highly concentrated, large-dollar grants to a handful of institutional grantees; preference for capital campaigns and core operating support, with occasional repeat grants to the same organizations and a regional (Bay Area/Santa Cruz) emphasis alongside select national/international conservation investments.

    Funding Style

    general/unrestricted supportcapital campaign fundingoperating supportproject-specific / research grantscapacity-building for service delivery

    Notable grantees: Second Harvest of Silicon Valley, Land Trust of Santa Cruz County, University of California San Francisco Foundation, President & Trustees of Colby College, Rewild

    Topics

    nature and marine conservation (island, coral reef, bay projects)sustainable agriculture and dairy developmentschool feeding and child nutrition programs (Africa)medical and longevity research (rapamycin, drug repurposing, eye hospital)climate and earth-data mapping (MapBiomas / climate work)education and youth development (residence life, running academy)

    Where Jeff and Marieke Rothschild Foundation Makes Grants

    Grant recipients are overwhelmingly in the United States, with 26 grants listed to U.S. organizations. California is the most frequent recipient state, and several awards land in the Bay Area and nearby coastal counties: San Jose, San Francisco, Santa Cruz, Palo Alto, and Greenbrae all appear in the recent grants list. Outside California, awards went to organizations in Waterville, Maine; New York, New York; Washington, DC; Orlando, Florida; Boulder, Colorado; Seaford, New York; and Jenkintown, Pennsylvania. The recipient country distribution in the data shows U.S. grants only.

    Frequently Asked Questions About Jeff and Marieke Rothschild Foundation

    What sizes of grants does Jeff and Marieke Rothschild Foundation عادة make?

    The distribution is skewed toward large awards: the 25th percentile is $178,900, the median grant is $225,000, and the 75th percentile is $1,618,750. The recent file also includes several grants in the $5 million range.

    Does the foundation support the same organizations more than once?

    Yes. Second Harvest of Silicon Valley received grants in 2023 and 2025, Land Trust of Santa Cruz County received awards in 2023 and 2025, and Kenyan Kids Foundation appears multiple times across 2023 and 2025.

    What kinds of causes does the foundation fund?

    The grant record shows support for food security, conservation, campus infrastructure, school feeding programs, climate work, medical research, and advocacy. Named examples include Second Harvest of Silicon Valley, Land Trust of Santa Cruz County, UCSF Foundation, Rewild, and Every Cure Inc.

    Where are grants concentrated geographically?

    California is the top state by grant count, and 50% of grants go to recipients in the foundation’s headquarters state. Recent recipients include organizations in San Jose, San Francisco, Santa Cruz, Palo Alto, and Greenbrae.

    Is the foundation a source of grants to individuals or program-related investments?

    No. The provided data says the foundation funds individuals is false and makes program-related investments is false, so its activity is shown through grants to organizations rather than direct individual support or PRIs.

    Latest 990 Filing

    2025

    Source: IRS Form 990-PF, fiscal year 2025.

    Recent Grants

    Most recent grants reported to the IRS.

    RecipientLocationAmountYearPurpose
    SECOND HARVEST OF SILICON VALLEYSAN JOSE, CA$5,500,0002025CAPITAL CAMPAIGN/OPERATING SUPPORT
    UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATIONSAN FRANCISCO, CA$5,000,0002025PARNASSUS CAMPUS AND OPERATIONS
    PRESIDENT & TRUSTEES OF COLBY COLLEGEWATERVILLE, ME$5,000,0002025RESIDENCE HALL/RESIDENCE LIFE
    REWILDAUSTIN, TX$2,500,0002025GUAFO ISLAND PROJECT
    NATIONAL PHILANTHROPIC TRUSTJENKINTOWN, PA$2,000,0002025ICONIQ IMPACT OCEAN CO-LAB
    FOOD FOR EDUCATION FOUNDATION INCNEW YORK, NY$1,600,0002025SCHOOL FEEDING PROGRAMS IN AFRICA
    AVINA AMERICAS INCWASHINGTON, DC$1,000,0002025MAPBIOMAS WORK ON CLIMATE
    HUMAN RIGHTS WATCH INCNEW YORK, NY$1,000,0002025GENERAL SUPPORT
    CLEAN SLATE INITIATIVE INCORLANDO, FL$1,000,0002025AUDACIOUS PROJECT
    LAND TRUST OF SANTA CRUZ COUNTYSANTA CRUZ, CA$1,000,0002025GENERAL SUPPORT
    EVERY CURE INCNEW YORK, NY$1,000,0002025AI PLATFORM FOR DRUG REPURPOSING
    RAINBOW WORLD FUNDSAN FRANCISCO, CA$1,000,0002025GENERAL SUPPORT
    GREAT BARRIER REEF FOUNDATION USA INCWASHINGTON, DC$500,0002025SOLUTIONS FOR PROTECTING CORAL REEFS
    LIFESPAN EXTENSION ADVOCACY FOUNDATION INCSEAFORD, NY$263,0002025RAPAMYCIN AND EXERCISE PERFORMANCE FOR LONGEVITY RESEARCH PROJECT
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$250,0002025CO-OPERATIVE DAIRY DEVELOPMENT PROJECT
    NP2GREENBRAE, CA$250,0002025GENERAL SUPPORT
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$150,0002025TRANSCEND RUNNING ACADEMY
    INKOMOKOCLINTON, WA$100,0002025IMPROVE LIVES IN ETHIOPIA, KENYA AND SOUTH SUDAN
    SECOND HARVEST OF SILICON VALLEYSAN JOSE, CA$7,100,0002024CAPITAL CAMPAIGN/OPERATING SUPPORT
    VANDERBILT UNIVERSITYNASHVILLE, TN$5,000,0002024GENERAL SUPPORT
    UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATIONSAN FRANCISCO, CA$5,000,0002024PARNASSUS CAMPUS AND OPERATIONS
    SAN FRANCISCO OPERA ASSOCIATIONSAN FRANCISCO, CA$5,000,0002024GENERAL SUPPORT
    NATIONAL PHILANTHROPIC TRUSTJENKINTOWN, PA$2,000,0002024ICONIQ IMPACT OCEAN CO-LAB
    RAINBOW WORLD FUNDSAN FRANCISCO, CA$1,500,0002024AMERICANS FOR AFGHANS CAMPAIGN
    LIFE LAB SCIENCE PROGRAMSANTA CRUZ, CA$1,000,0002024GIANT STEPS: GROWING MORE SCIENTISTS & ENVIRONMENTAL STEWARDS CAMPAIGN
    NEW VENTURE FUNDWASHINGTON, DC$1,000,0002024CLEAN SLATE INITIATIVE
    HUMAN RIGHTS WATCH INCNEW YORK, NY$300,0002024GENERAL SUPPORT & LIFE WITHOUT PAROLE PROJECT
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$285,0002024TRANSCEND RUNNING ACADEMY
    NEXTGEN CLIMATE AMERICA INCSACRAMENTO, CA$250,0002024CIVIC SPACE FOUNDATION PROJECT
    MONTEFIORE MEDICAL CENTERBRONX, NY$250,0002024ALZHEIMER'S DISEASE RESEARCH
    SANTA CRUZ MOUNTAINS TRAIL STEWARDSHIPSANTA CRUZ, CA$250,0002024GENERAL SUPPORT
    NP2GREENBRAE, CA$200,0002024GENERAL SUPPORT
    FIAT LUX FOUNDATIONPALO ALTO, CA$200,0002024GENERAL SUPPORT
    THE AMERICAS HEPATO-PANCREATO-BILIARY FOUNDATION INCPRAIRIE VILLAGE, KS$182,4002024LATIN AMERICAN HPB SURGERY FELLOWSHIP
    UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATIONSAN FRANCISCO, CA$150,0002024CHANCELLOR'S CIRCLE
    HUMAN RIGHTS WATCH INCNEW YORK, NY$100,0002024VOICES FOR JUSTICE SILICON VALLEY CELEBRATION
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$90,0002024CO-OPERATIVE DAIRY DEVELOPMENT PROJECT
    LAND TRUST OF SANTA CRUZ COUNTYSANTA CRUZ, CA$8,114,2452023NATURE CONSERVATION
    SECOND HARVEST OF SILICON VALLEYSAN JOSE, CA$5,500,0002023CAPITAL CAMPAIGN/OPERATING SUPPORT
    THE WILD FOUNDATIONBOULDER, CO$325,0002023BAY OF LIFE PROJECT
    SANTA CRUZ MOUNTAINS TRAIL STEWARDSHIPSANTA CRUZ, CA$250,0002023COTONI-COAST DAIRIES PROJECT
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$200,0002023SCHOOL FEEDING PROGRAM
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$196,8662023EFFICIENT AND SUSTAINABLE MILK PROCESSING
    FIAT LUX FOUNDATIONPALO ALTO, CA$125,0002023KENYA CHERANGANY HILLS EYE HOSPITAL
    KENYAN KIDS FOUNDATIONLOUISVILLE, KY$75,0002023TRANSCEND RUNNING ACADEMY

    SECOND HARVEST OF SILICON VALLEY

    $5,500,000
    SAN JOSE, CA2025

    CAPITAL CAMPAIGN/OPERATING SUPPORT

    UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION

    $5,000,000
    SAN FRANCISCO, CA2025

    PARNASSUS CAMPUS AND OPERATIONS

    PRESIDENT & TRUSTEES OF COLBY COLLEGE

    $5,000,000
    WATERVILLE, ME2025

    RESIDENCE HALL/RESIDENCE LIFE

    REWILD

    $2,500,000
    AUSTIN, TX2025

    GUAFO ISLAND PROJECT

    NATIONAL PHILANTHROPIC TRUST

    $2,000,000
    JENKINTOWN, PA2025

    ICONIQ IMPACT OCEAN CO-LAB

    FOOD FOR EDUCATION FOUNDATION INC

    $1,600,000
    NEW YORK, NY2025

    SCHOOL FEEDING PROGRAMS IN AFRICA

    AVINA AMERICAS INC

    $1,000,000
    WASHINGTON, DC2025

    MAPBIOMAS WORK ON CLIMATE

    HUMAN RIGHTS WATCH INC

    $1,000,000
    NEW YORK, NY2025

    GENERAL SUPPORT

    CLEAN SLATE INITIATIVE INC

    $1,000,000
    ORLANDO, FL2025

    AUDACIOUS PROJECT

    LAND TRUST OF SANTA CRUZ COUNTY

    $1,000,000
    SANTA CRUZ, CA2025

    GENERAL SUPPORT

    EVERY CURE INC

    $1,000,000
    NEW YORK, NY2025

    AI PLATFORM FOR DRUG REPURPOSING

    RAINBOW WORLD FUND

    $1,000,000
    SAN FRANCISCO, CA2025

    GENERAL SUPPORT

    GREAT BARRIER REEF FOUNDATION USA INC

    $500,000
    WASHINGTON, DC2025

    SOLUTIONS FOR PROTECTING CORAL REEFS

    LIFESPAN EXTENSION ADVOCACY FOUNDATION INC

    $263,000
    SEAFORD, NY2025

    RAPAMYCIN AND EXERCISE PERFORMANCE FOR LONGEVITY RESEARCH PROJECT

    KENYAN KIDS FOUNDATION

    $250,000
    LOUISVILLE, KY2025

    CO-OPERATIVE DAIRY DEVELOPMENT PROJECT

    NP2

    $250,000
    GREENBRAE, CA2025

    GENERAL SUPPORT

    KENYAN KIDS FOUNDATION

    $150,000
    LOUISVILLE, KY2025

    TRANSCEND RUNNING ACADEMY

    INKOMOKO

    $100,000
    CLINTON, WA2025

    IMPROVE LIVES IN ETHIOPIA, KENYA AND SOUTH SUDAN

    SECOND HARVEST OF SILICON VALLEY

    $7,100,000
    SAN JOSE, CA2024

    CAPITAL CAMPAIGN/OPERATING SUPPORT

    VANDERBILT UNIVERSITY

    $5,000,000
    NASHVILLE, TN2024

    GENERAL SUPPORT

    UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION

    $5,000,000
    SAN FRANCISCO, CA2024

    PARNASSUS CAMPUS AND OPERATIONS

    SAN FRANCISCO OPERA ASSOCIATION

    $5,000,000
    SAN FRANCISCO, CA2024

    GENERAL SUPPORT

    NATIONAL PHILANTHROPIC TRUST

    $2,000,000
    JENKINTOWN, PA2024

    ICONIQ IMPACT OCEAN CO-LAB

    RAINBOW WORLD FUND

    $1,500,000
    SAN FRANCISCO, CA2024

    AMERICANS FOR AFGHANS CAMPAIGN

    LIFE LAB SCIENCE PROGRAM

    $1,000,000
    SANTA CRUZ, CA2024

    GIANT STEPS: GROWING MORE SCIENTISTS & ENVIRONMENTAL STEWARDS CAMPAIGN

    NEW VENTURE FUND

    $1,000,000
    WASHINGTON, DC2024

    CLEAN SLATE INITIATIVE

    HUMAN RIGHTS WATCH INC

    $300,000
    NEW YORK, NY2024

    GENERAL SUPPORT & LIFE WITHOUT PAROLE PROJECT

    KENYAN KIDS FOUNDATION

    $285,000
    LOUISVILLE, KY2024

    TRANSCEND RUNNING ACADEMY

    NEXTGEN CLIMATE AMERICA INC

    $250,000
    SACRAMENTO, CA2024

    CIVIC SPACE FOUNDATION PROJECT

    MONTEFIORE MEDICAL CENTER

    $250,000
    BRONX, NY2024

    ALZHEIMER'S DISEASE RESEARCH

    SANTA CRUZ MOUNTAINS TRAIL STEWARDSHIP

    $250,000
    SANTA CRUZ, CA2024

    GENERAL SUPPORT

    NP2

    $200,000
    GREENBRAE, CA2024

    GENERAL SUPPORT

    FIAT LUX FOUNDATION

    $200,000
    PALO ALTO, CA2024

    GENERAL SUPPORT

    THE AMERICAS HEPATO-PANCREATO-BILIARY FOUNDATION INC

    $182,400
    PRAIRIE VILLAGE, KS2024

    LATIN AMERICAN HPB SURGERY FELLOWSHIP

    UNIVERSITY OF CALIFORNIA SAN FRANCISCO FOUNDATION

    $150,000
    SAN FRANCISCO, CA2024

    CHANCELLOR'S CIRCLE

    HUMAN RIGHTS WATCH INC

    $100,000
    NEW YORK, NY2024

    VOICES FOR JUSTICE SILICON VALLEY CELEBRATION

    KENYAN KIDS FOUNDATION

    $90,000
    LOUISVILLE, KY2024

    CO-OPERATIVE DAIRY DEVELOPMENT PROJECT

    LAND TRUST OF SANTA CRUZ COUNTY

    $8,114,245
    SANTA CRUZ, CA2023

    NATURE CONSERVATION

    SECOND HARVEST OF SILICON VALLEY

    $5,500,000
    SAN JOSE, CA2023

    CAPITAL CAMPAIGN/OPERATING SUPPORT

    THE WILD FOUNDATION

    $325,000
    BOULDER, CO2023

    BAY OF LIFE PROJECT

    SANTA CRUZ MOUNTAINS TRAIL STEWARDSHIP

    $250,000
    SANTA CRUZ, CA2023

    COTONI-COAST DAIRIES PROJECT

    KENYAN KIDS FOUNDATION

    $200,000
    LOUISVILLE, KY2023

    SCHOOL FEEDING PROGRAM

    KENYAN KIDS FOUNDATION

    $196,866
    LOUISVILLE, KY2023

    EFFICIENT AND SUSTAINABLE MILK PROCESSING

    FIAT LUX FOUNDATION

    $125,000
    PALO ALTO, CA2023

    KENYA CHERANGANY HILLS EYE HOSPITAL

    KENYAN KIDS FOUNDATION

    $75,000
    LOUISVILLE, KY2023

    TRANSCEND RUNNING ACADEMY