Funding search · EIN 260799587 · Los Altos, CA

The Heising-Simons Foundation

A private foundation (files IRS Form 990-PF). Most private foundations do not take unsolicited applications; the route in is usually a program officer.

2,038
grants reported
$442.6M
total given
2022–2024
filing years
$149,014
median grant

Based on grants this organization reported to the IRS for tax years 20222024. This is what they filed, not a complete record of their giving, and recent years may be incomplete because filings lag.

What they fund

fellowshipjusticecaliforniadevelopmentearlyresearchpegasiwork

Funder website ↗Full IRS filings ↗How this is builtReport an error

Funding pattern

What this funder pays for, at what size, and how to position adjacent work. Read from their filings, with every number checked against the record.

Where the money goes

  • Early childhood education, preschool-to-third-grade systems, child care workforce
  • Climate and clean energy policy: power markets, transportation electrification
  • Multilingual/emerging bilingual learners and family math engagement
  • Astronomy and fundamental physics instrumentation (exoplanets, quantum gravity)
  • Immigrant rights, democracy, and youth justice organizing
  • Science journalism and STEM education pipelines

Typical grant

Median grant is about $149,000, with the middle half between $77,500 and $250,000. The seven-figure checks go to national policy intermediaries and pooled funds (EDF, NRDC, Emerging Bilingual Collaborative, Alliance for Early Success), while university research awards cluster at $400,000 to $800,000, often multi-year phases. Giving repeats heavily: the same recipients appear year over year, and 2,038 grants across only 596 recipients means most grantees get multiple awards.

Their words

Phrases from their own grant descriptions, worth speaking back to them.

  • FOR GENERAL SUPPORT
  • TO ADVANCE CLIMATE AND CLEAN ENERGY POLICIES
  • FOR CAPACITY BUILDING SUPPORT
  • TRANSPORTATION ELECTRIFICATION
  • MULTILINGUAL LEARNERS

Positioning adjacent work

  • Name a specific phase of work, as in 'the second development phase of MAGAOX' or 'ECPIHE Phase III'.
  • For instrument or physics research, ask $430,000 to $630,000 and frame as staged development.
  • Connect early-childhood work to UPK/TK implementation, the child care workforce, or family math engagement.
  • Emphasize practitioner and family voice; they fund Parent Voices CA, Practitioners' Voice CA, PIQE.

Worth knowing: Heavily California-centered (894 of 2,038 grants) with a second cluster in DC for national policy shops and fiscal sponsors like New Venture Fund, Tides, and Windward. The portfolio is unusually barbelled: large policy and early-education intermediaries alongside a small, stable set of astronomy and fundamental physics grantees at Caltech, UC campuses, and Arizona, which reads as relationship-driven and hard to enter cold.

1 grant matching “organiza · $200,000

  • $200,000

    The Goodnation Foundation · New York, NY · 2024

    For the organiza tx project

Top recipients

Repeat recipients are the strongest signal of whether a funder has an open door or quietly re-funds the same organizations.

  • Environmental Defense Fund6 grants · $13.0M
  • Natural Resources Defense Council6 grants · $10.6M
  • Regents of the University of California at Berkeley31 grants · $9.5M
  • New Venture Fund24 grants · $8.6M
  • California Institute of Technology37 grants · $8.6M
  • Tides Foundation29 grants · $6.9M
  • Tides Center25 grants · $6.8M
  • Regents of the University of California Santa Cruz37 grants · $6.0M
  • Partnership Project13 grants · $5.6M
  • Regents of the University of California at San Diego21 grants · $5.5M

Giving over time

$141.8M
2022
$151.4M
2023
$149.4M
2024

Grant history

The 100 largest of 2,038 grants.

  • $4.0M

    Environmental Defense Fund · San Francisco, CA · 2023

    To advance climate and clean energy policies

  • $4.0M

    Environmental Defense Fund · San Francisco, CA · 2022

    For general support

  • $3.6M

    Environmental Defense Fund · San Francisco, CA · 2024

    To advance climate and clean energy policies

  • $3.3M

    Natural Resources Defense Council · San Francisco, CA · 2024

    To advance climate and clean energy policies

  • $3.1M

    Natural Resources Defense Council · San Francisco, CA · 2023

    To advance climate and clean energy policies

  • $3.0M

    Natural Resources Defense Council · San Francisco, CA · 2022

    To advance climate and clean energy policies

  • $2.6M

    Alliance for Early Success · Leawood, KS · 2022

    For general support

  • $2.1M

    Amalgamated Charitable Foundation · Washington, DC · 2024

    For the democracy frontlines fund

  • $2.0M

    Global Impact · Alexandria, VA · 2024

    For the emerging bilingual collaborative

  • $2.0M

    California Education Partners · San Francisco, CA · 2022

    For a multi-district, early grades continuous improvement collaboration

  • $1.9M

    National Association for Family School and Community Engagement · Alexandria, VA · 2024

    For the center for family math

  • $1.6M

    Las Cumbres Observatory Global Telescope Network · Goleta, CA · 2022

    To fabricate, install, and commission the muscat4 imager on the faulkes south telescope

  • $1.6M

    Regents of the University of California at Berkeley · Berkeley, CA · 2023

    To test the quantum coherence of gravity

  • $1.6M

    Third Sector New England · Boston, MA · 2023

    For the early childhood investment collaborative

  • $1.5M

    California Education Partners · San Francisco, CA · 2024

    For the preschool to third grade coherence collaboration (p3cc)

  • $1.5M

    New Venture Fund · Washington, DC · 2024

    For the emerging bilingual collaborative

  • $1.5M

    California Education Partners · San Francisco, CA · 2023

    For a multi-district early grades continuous improvement collaboration

  • $1.5M

    Edvance · Modesto, CA · 2023

    For general support

  • $1.5M

    Regents of the University of California at San Diego · San Diego, CA · 2023

    For the completion of the simons observatory

  • $1.5M

    San Francisco State University · San Francisco, CA · 2023

    For upgrading the planetarium at san francisco state university

  • $1.3M

    The Regents of the University of California Los Angeles · Los Angeles, CA · 2022

    For instrumentation and its application to carbonate clumped isotope analysis

  • $1.3M

    Arizona State University Foundation for a New American University · Tempe, AZ · 2024

    For the children's equity project

  • $1.3M

    Tides Foundation · San Francisco, CA · 2023

    For the heising-simons foundation organizational capacity responsive fund

  • $1.2M

    Climate and Clean Energy Equity Fund · Washington, DC · 2024

    For general support

  • $1.2M

    California Association for Research in Astronomy · Kamuela, HI · 2023

    To support development of the scales instrument

  • $1.2M

    Powermylearning · New York, NY · 2022

    For family playlists in the early grades

  • $1.2M

    Regents of the University of California at Berkeley · Berkeley, CA · 2024

    For the center for the study of child care employment

  • $1.2M

    Regents of the University of California at Berkeley · Berkeley, CA · 2023

    For the center for the study of child care employment

  • $1.2M

    Regents of the University of California at Berkeley · Berkeley, CA · 2022

    For the center for the study of child care employment

  • $1.1M

    Tides Foundation · San Francisco, CA · 2024

    For practitioners' voice ca 2.0

  • $1.1M

    Climate and Clean Energy Equity Fund · Washington, DC · 2023

    For general support

  • $1.1M

    Climateworks Foundation · San Francisco, CA · 2023

    To advance climate finance, decarbonize global shipping, and support the mission of climateworks foundation

  • $1.0M

    Amalgamated Charitable Foundation · Washington, DC · 2023

    For the democracy frontlines fund

  • $1.0M

    Family Values at Work a Multi-State Consortium · Milwaukee, WI · 2023

    For general support

  • $1.0M

    Alliance for Early Success · Washington, DC · 2024

    For general support

  • $1.0M

    Center for Community Change · Washington, DC · 2024

    For general support

  • $1.0M

    Environmental Defense Fund · San Francisco, CA · 2024

    To validate methanesat measurements

  • $1.0M

    International Council On Clean Transportation · Washington, DC · 2024

    For general support

  • $1.0M

    Neo Philanthropy · New York, NY · 2024

    For the four freedoms fund

  • $1.0M

    Philanthropic Ventures Foundation · Oakland, CA · 2024

    To support quality upk implementation in california

  • $1.0M

    Powermylearning · New York, NY · 2024

    For family playlists and organizational effectiveness support

  • $1.0M

    Rocky Mountain Institute · Boulder, CO · 2024

    To advance u.s. Power ($600,000) and transportation sector transformation ($400,000)

  • $1.0M

    Third Sector New England · Boston, MA · 2024

    For the raising child care fund

  • $1.0M

    Neo Philanthropy · New York, NY · 2023

    For the four freedoms fund

  • $1.0M

    New Venture Fund · Washington, DC · 2023

    For child care for every family network

  • $1.0M

    Powermylearning · New York, NY · 2023

    For family playlists in the early grades

  • $1.0M

    Regents of the University of California Davis · Davis, CA · 2023

    For the center for violence prevention research in honor of deanna gomby

  • $1.0M

    Climateworks Foundation · San Francisco, CA · 2022

    To advance climate finance ($700,000), decarbonize global shipping ($300,000), and support the mission of climateworks foundation ($100,000)

  • $1.0M

    International Council On Clean Transportation · Washington, DC · 2022

    For general support

  • $1.0M

    National Association for Family School and Community Engagement · Alexandria, VA · 2022

    For general support

  • $1.0M

    Neo Philanthropy · New York, NY · 2022

    For the four freedoms fund

  • $1.0M

    New Venture Fund · Washington, DC · 2022

    For the emerging bilingual collaborative

  • $1.0M

    The Board of Trustees of the Leland Stanford Junior University · Redwood City, CA · 2022

    For rapid 2022 and the early learning initiative

  • $950,000

    United States Energy Foundation · San Francisco, CA · 2023

    To advance clean vehicle standards, transportation electrification, and equitable transportation policy

  • $950,000

    Lowell Observatory · Flagstaff, AZ · 2022

    To support observing time for the expres 100 earths survey

  • $950,000

    United States Energy Foundation · San Francisco, CA · 2022

    To advance clean vehicle standards ($700,000), transportation electrification ($150,000), and equitable transportation policy ($100,000)

  • $940,911

    California Institute of Technology · Pasadena, CA · 2022

    To repurpose the caltech submillimeter observatory telescope

  • $925,000

    New Venture Fund · Washington, DC · 2023

    For the early childhood governance and financing project

  • $922,413

    Trustees of Purdue University · W Lafayette, IN · 2023

    To develop and evaluate math language resources for emerging bilinguals

  • $900,000

    Advanced Energy Institute · Washington, DC · 2024

    To reform wholesale power markets, expand transmission, engage in utility planning in key states ($800,000), and defend clean energy tax credits ($100,000).

  • $900,000

    Society for Research in Child Development · Washington, DC · 2022

    For the srcd policy fellowship

  • $850,000

    Climate Power Education Fund · Washington, DC · 2024

    For general support

  • $850,000

    Climate Power Education Fund · Washington, DC · 2023

    For climate power education fund

  • $850,000

    Climate Power Education Fund · Sacramento, CA · 2022

    For climate power education fund

  • $828,100

    Tides Foundation · San Francisco, CA · 2022

    For the heising simons capacity building fund

  • $817,770

    Society for Research in Child Development · Washington, DC · 2024

    For the srcd policy fellowship

  • $810,113

    Education Development Center · Waltham, MA · 2022

    For young mathematicians in worcester

  • $800,000

    Advanced Energy Works · Washington, DC · 2023

    To reform wholesale power markets, expand transmission, and engage in utility planning in key states

  • $800,000

    Greenlining Institute · Oakland, CA · 2023

    For general support

  • $800,000

    Partnership Project · Washington, DC · 2023

    For the clean vehicles campaign

  • $800,000

    Advanced Energy Economy Institute · Washington, DC · 2022

    To advance wholesale power market reform, transmission expansion, and utility regulatory reform

  • $783,000

    Partnership Project · Washington, DC · 2023

    For the charge campaign

  • $780,000

    Learning Policy Institute · Palo Alto, CA · 2024

    For general support

  • $780,000

    Learning Policy Institute · Palo Alto, CA · 2022

    For general support

  • $775,000

    The Board of Trustees of the Leland Stanford Junior University · Redwood City, CA · 2024

    For the stanford center on early childhood

  • $775,000

    The Board of Trustees of the Leland Stanford Junior University · Redwood City, CA · 2023

    For the stanford center on early childhood

  • $770,000

    Public Media Group of Southern California · Burbank, CA · 2023

    For the family math initiative

  • $750,000

    American Indian College Fund · Denver, CO · 2024

    To strengthen indigenous early childhood pedagogy and workforce pathways at tribal colleges

  • $750,000

    English Learners Success Forum · Albuquerque, NM · 2024

    For general support

  • $750,000

    Teachers College Columbia University · New York, NY · 2024

    For ecpihe phase iii

  • $750,000

    United States Energy Foundation · San Francisco, CA · 2024

    To advance clean vehicle standards and transportation electrification

  • $750,000

    Mathtalk Pbc · Cambridge, MA · 2023

    For the math!everywhere! Project

  • $749,335

    Tntp · New York, NY · 2024

    To prototype a pipeline for tk educators ready to serve multilingual learners

  • $746,000

    Georgetown University · Washington, DC · 2023

    For the center on poverty and inequality

  • $725,345

    Carnegie Institution of Washington · Washington, DC · 2022

    For technology development and proof-of-concept demonstrations in support of the magellan infrared multi-object spectrograph

  • $722,650

    El Education · New York, NY · 2022

    To build out a k-2 english language development curriculum for multilingual learners

  • $721,735

    Oregon State University · Corvallis, OR · 2022

    To develop and test technologies for u/th radioisotope dating

  • $717,770

    Society for Research in Child Development · Washington, DC · 2023

    For the srcd policy fellowship

  • $700,000

    Center for American Progress · Washington, DC · 2024

    For the tackling climate and environmental injustice program

  • $700,000

    Climateworks Foundation · San Francisco, CA · 2024

    To advance climate finance

  • $700,000

    Edsource · Oakland, CA · 2024

    For general support

  • $700,000

    Gridlab · Berkeley, CA · 2024

    For general support

  • $700,000

    University of Washington · Seattle, WA · 2024

    To continue implementing the district innovation and leadership for early education (dial ee)

  • $700,000

    Bipartisan Policy Center · Washington, DC · 2022

    For the tribal communities initiative

  • $700,000

    Californians Dedicated To Education Foundation · Seattle, WA · 2022

    To continue implementing the district innovation and leadership for early education (dial ee)

  • $700,000

    Center for Applied Environmental Law & Policy · Boulder, CO · 2022

    For general support

  • $700,000

    Edsource · Oakland, CA · 2022

    For general support

  • $700,000

    Edvance · Modesto, CA · 2022

    For general support

  • $700,000

    Gridlab · Berkeley, CA · 2022

    For general support

  • $700,000

    Sierra Health Foundation Center for Health Program Management · Sacramento, CA · 2022

    To build community capacity in the central valley

View all 2,038 grants →

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Source: IRS Form 990-PF, Part XV, as filed by the foundation. These are grants already paid — a record of what this funder backs, not an open call.