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Form 990-PFTax year 2024EIN 20-2777268

Troper Wojcicki Foundation

A private foundation in San Francisco, CA. Its return for tax year 2024 lists 60 grants and $15.8 million paid in grants.

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Tax year 2024 (period ending Dec 31, 2024), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

4 returns on file
Grants paid by tax year. The latest year is in blue.

  • Tax year 2024

    $15,829,456

    Grants listed
    60
    Assets, end of year
    $339,320,002

  • Tax year 2023

    $17,595,579

    Grants listed
    49
    Assets, end of year
    $289,144,583

  • Tax year 2022

    $11,630,204

    Grants listed
    47
    Assets, end of year
    $229,782,808

  • Tax year 2021

    $14,301,176

    Grants listed
    76
    Assets, end of year
    $311,543,592

Grants paid in 2024

60 grants, largest first

As listed on the return.

  1. Memorial Sloan-Kettering Cancer CenterNew York, NY

    A first-in-human clinical trial of engineered tumor infiltrating lymphocytes with membrane bound il15 plus acetazolamide in metastatic NSCLC

    $1,000,000
  2. Rainforest TrustWarrenton, VA

    General operating support

    $1,000,000
  3. Room to ReadSan Francisco, CA

    General operating support

    $1,000,000
  4. International Rescue Committee IncNew York, NY

    General operating support

    $750,000
  5. Partners in HealthBoston, MA

    General operating support

    $750,000
  6. Dana-Farber Cancer Institute IncBoston, MA

    Ampvax: a disruptive personal cancer vaccine

    $606,667
  7. California Academy of SciencesSan Francisco, CA

    General support ($470k/year) and science trustees table at the annual gala ($30k/year)

    $500,000
  8. EarthjusticeSan Francisco, CA

    General operating support

    $500,000
  9. Environmental Defense Fund IncorporatedNew York, NY

    General operating support

    $500,000
  10. Hamilton FamiliesSan Francisco, CA

    General operating support

    $500,000
  11. La Jolla Institute for ImmunologyLa Jolla, CA

    To support efficient isolation and validation of neoag-specific TCRS from primary PBMC

    $500,000
  12. Natural Resources Defense Council IncNew York, NY

    General operating support

    $500,000
  13. President and Fellows of Harvard CollegeCambridge, MA

    Climate and sustainability seed grant program

    $500,000
  14. The Regents of the University of California San FranciscoSan Francisco, CA

    Clinical tumor tme acquired resistance

    $460,000
  15. Dana-Farber Cancer Institute IncBoston, MA

    Improving treatment of erbb2 lung cancers (identifying synergistic combination via crispr screen)

    $414,000
  16. American Friends of the Ocean Cleanup FoundationNew York, NY

    General operating support

    $400,000
  17. UC Berkeley FoundationBerkeley, CA

    Marco troper scholarship

    $400,000
  18. Medecins Sans Frontiers USA IncNew York, NY

    General operating support

    $333,333
  19. Happy Lungs ProjectAustin, TX

    General operational support

    $306,667
  20. The University of Texas MD Anderson Cancer CenterHouston, TX

    To support the investigation of secondary her2 mutations and their impact on her2 tki sensitivity under the stewardship of the chair of thoracic/head and neck medical oncology

    $300,816
  21. Board of Trustees of the Leland Stanford Junior UniversityStanford, CA

    Support the troper-wojcicki for til cell therapy research fund in the school of medicine

    $300,000
  22. Boys & Girls Clubs of the PeninsulaMenlo Park, CA

    General operating support

    $250,000
  23. Friends of the OsaWashington, DC

    General operating support

    $250,000
  24. The Malala FundWashington, DC

    General operating support

    $250,000
  25. The Nature ConservancyArlington, VA

    General operating support

    $250,000
  26. Population Services InternationalWashington, DC

    Reproductive health & lifeskills programs (maverick portfolio)

    $250,000
  27. Second Harvest of Silicon ValleySan Jose, CA

    General operating support

    $250,000
  28. Water Org IncKansas City, MO

    General operating support

    $250,000
  29. Vanderbilt UniversityNashville, TN

    Circulating tumor cell derived organoids for NSCLC

    $228,000
  30. The Regents of the University of California San FranciscoSan Francisco, CA

    Antibody directed release of targeted therapies for overcoming on-target toxicity in her2-mutant NSCLC

    $220,243
  31. Israaid US IncPalo Alto, CA

    General operating support

    $200,000
  32. Planned Parenthood Federation of America IncNew York, NY

    General operating support

    $200,000
  33. Save the Redwoods LeagueSan Francisco, CA

    General operating support

    $200,000
  34. Sempervirens FundMountain View, CA

    General operating support

    $200,000
  35. IogeneticsMadison, WI

    In vitro mass spectrometry analysis of peptide cleavage

    $166,230
  36. Amigos of Costa Rica IncWest Chester, PA

    General operating support

    $150,000
  37. Anti-Defamation LeagueNew York, NY

    General operating support

    $100,000
  38. Camfed USA FoundationSan Francisco, CA

    General operating support

    $100,000
  39. CodeorgSeattle, WA

    General operating support

    $100,000
  40. International Association for the Study of Lung CancerDenver, CO

    Young investigators grant program

    $100,000
  41. LifemovesSanta Clara, CA

    General operating support

    $100,000
  42. University of CambridgeCambridge, United Kingdom

    For the charitable activities of the lung cancer workshop being organized by the early cancer institute

    $75,000
  43. Growing Together Bay Area IncOakland, CA

    Farms to communities program

    $50,000
  44. Heifer Project InternationalLittle Rock, AR

    General operating support

    $50,000
  45. Teensmart InternationalMorrisville, NC

    General operating support

    $50,000
  46. UC Berkeley FoundationBerkeley, CA

    General operating support of grizzlycorps

    $50,000
  47. Bay Area Friendship CirclePalo Alto, CA

    General operating support

    $30,000
  48. The Center for Jewish Life IncStanford, CA

    General operating support

    $30,000
  49. Forever Family FoundationOceanside, NY

    General operating support

    $25,000
  50. Grassroots EcologyPalo Alto, CA

    General operating support

    $25,000
  51. Tawonga Jewish Community CorporationSan Francisco, CA

    General operating support

    $25,000
  52. InnoceanaKentfield, CA

    General operating support

    $20,000
  53. UCLA FoundationLos Angeles, CA

    $10,000 for the boa fund and $10,000 for the john wooden leadership fellows program

    $20,000
  54. Beyond FistulaLos Altos, CA

    General operating support

    $15,000
  55. Bay Area Friendship CirclePalo Alto, CA

    Dry rot repair

    $10,000
  56. Resource Area for TeachingSan Jose, CA

    General operating support

    $10,000
  57. Los Altos Mountain View Community FoundationLos Altos, CA

    In support of marco's mission

    $3,500
  58. Amigos of Costa Rica IncWest Chester, PA

    In support of centro israelita sionista

    $3,000
  59. Insight Meditation Center of the Mid-PeninsulaRedwood City, CA

    General operating support

    $1,000
  60. The Tech InteractiveSan Jose, CA

    General operating support

    $1,000

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. Education9 grants $2,458,00020% of the total
  2. International aid7 grants $2,303,00019% of the total
  3. Environment7 grants $2,175,00018% of the total
  4. Health3 grants $1,950,00016% of the total
  5. Medical research3 grants $1,327,33411% of the total
  6. Arts and culture2 grants $501,0004% of the total
  7. 8 other causes11 grants $1,306,00011% of the total

By State

Grants to organizations with a US address, latest year.

  1. California32 grants $6,970,743
  2. New York8 grants $3,058,333
  3. Massachusetts4 grants $2,270,667
  4. Virginia1 grant $1,000,000
  5. Texas2 grants $607,483
  6. District of Columbia2 grants $500,000
  7. Pennsylvania3 grants $403,000
  8. Missouri1 grant $250,000
  9. Tennessee1 grant $228,000
  10. Wisconsin1 grant $166,230

Officers, directors and trustees

4 people as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Dennis Troper as of 924PRESIDENT Hours 0.5Pay $0
  • Stephen Magowan as of 924TREASURER/SECRETARY Hours 0.5Pay $0
  • Susan Wojcicki Until 924PRESIDENT Hours 0.5Pay $0
  • Dennis Troper Until 924TREASURER/SECRETARY Hours 0.5Pay $0

The return

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