Troper Wojcicki Philanthropies
At a glance
This funder does not accept unsolicited applications. The foundation chooses the organisations it funds itself.
Key takeaways
- Troper Wojcicki Philanthropies says it does not accept unsolicited requests and works by invitation only, so a cold application is unlikely to be considered; a better first step is to build a relationship and then approach it with a proposal.
- Its stated themes are cancer research, clean energy transition, ecosystem conservation, humanitarian relief, women's equality, human rights and Bay Area communities, and its priority area is Bay Area counties in California such as Alameda, Contra Costa and Marin.
- About 8 in 10 of its 156 grants to organisations fall between $10,000 and $670,000, and half are about $220,000 or less, so a request in the lower part of that range is realistic, though its largest grant was about $2,000,000.
- In its filing, 78% of its grant dollars to organisations went to groups it had also funded in earlier filings, so its giving leans heavily towards existing grantees.
Overview
Troper Wojcicki Philanthropies is a US private foundation based in San Francisco, CA.
What they fund
Profile derived from the foundation's IRS Form 990-PF filings (TY2024, TY2023, TY2022) and its website, with every statement checked against those sources. Sources read on 7 October 2026.
Priority Areas
Troper Wojcicki Philanthropies deploys philanthropy and mission-related investments to organisations accelerating cancer research, tackling climate change and advancing human rights. In cancer, it supports ambitious projects developing innovations against the deadliest cancers, including lung and pancreatic cancers, through data-driven approaches; it focuses on molecular characterisation, personalised risk and treatment options, targeted therapies and immunotherapies. Its climate work invests in research and innovations for the global transition to clean energy and supports organisations preserving and protecting the planet’s most biodiverse ecosystems. Its humanitarian giving backs organisations that empower communities, elevate equal opportunities for women and girls, provide relief during humanitarian crises, and combat hate and discrimination. In the Bay Area, it supports organisations addressing the unique needs of its neighbours.
Themes
- Cancer research
- Clean energy transition
- Ecosystem conservation
- Humanitarian relief
- Women's equality
- Human rights
- Bay Area communities
Geographic Focus
Priority: Bay Area: Alameda, Contra Costa, Marin and 6 more counties in California. From its grants, not stated by the foundation: California; New York; Massachusetts; Virginia; District of Columbia; United Kingdom; Switzerland.
How to apply
The foundation states that it does not accept unsolicited requests.
Application success factors
- Repeat giving: In its TY2024 filing, 78% of its grant dollars to organisations went to organisations it had also funded in its TY2022 or TY2023 filing.
- Grant size: Across its TY2022, TY2023 and TY2024 filings, half of its 156 grants to organisations were about $220,000 or less.
Where grants go
From grants to organisations in the foundation’s filings for tax years 2022–2024.
Grant dollars by state
6 other states: 10%
Outside the US or with no state on the filing: 1%
- The largest single recipient received 6% of grant dollars to organisations.
- In tax year 2024, 78% of grant dollars went to organisations Troper Wojcicki Philanthropies had funded in earlier filings.
- <1% of grant dollars went directly to organisations outside the US (United Kingdom, Switzerland).
- 1% of grant dollars went to intermediaries that regrant to other organisations.
Grants
How much do they typically give?
Share of 60 grants in tax year 2024 by size
Median $210k (tax year 2024)
The largest grants to organisations in the foundation’s latest filing:
- Rainforest Trust · General operating support$1,000,0002024 tax year
- Room to Read · General operating support$1,000,0002024 tax year
- Memorial Sloan Kettering Cancer Center · A first-in-human clinical trial of engineered tumor infiltrating lymphocytes with membrane bound il15 plus acetazolamide in metastatic nsclc$1,000,0002024 tax year
- International Rescue Committee · General operating support$750,0002024 tax year
- Partners In Health · General operating support$750,0002024 tax year
- Dana-Farber Cancer Institute · Ampvax: a disruptive personal cancer vaccine$606,6672024 tax year
- La Jolla Institute for Immunology · To support efficient isolation and validation of neoag-specific tcrs from primary pbmc$500,0002024 tax year
- California Academy of Sciences · General support ($470k/year) and science trustees table at the annual gala ($30k/year)$500,0002024 tax year
Grants to organisations listed in the foundation’s Form 990-PF filings. Grants to individuals are not shown.
Officers and directors
- Dennis Troper — Treasurer / Secretary
- Susan Wojcicki — President
- Stephen Magowan As Of 924 — Treasurer / Secretary
- Dennis Troper As Of 924 — President
From the latest Form 990-PF filing
3 years of tax filings
| Year | Total expenses | Grants paid | Assets | Filing document |
|---|---|---|---|---|
| 2022 tax year | $12,540,682 | $11,630,204 | $229,782,808 | Filing for 2022 tax year |
| 2023 tax year | $19,057,464 | $17,595,579 | $289,144,583 | Filing for 2023 tax year |
| 2024 tax year | $21,659,053 | $15,829,456 | $339,320,002 | Filing for 2024 tax year |
Figures from the foundation’s IRS Form 990-PF filings. Assets are at fair market value at year end. The document icon links to each year’s filing on ProPublica Nonprofit Explorer.
Sources
Registers and filings
Other sources
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At a glance
Applying to Troper Wojcicki Philanthropies?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- info@twphilanthropies.org
- San Francisco, CA
- twphilanthropies.org
Applying to Troper Wojcicki Philanthropies?
Hinchilla drafts your answers around this funder's priorities, using your organisation's own documents.
No credit card required
Contact
- info@twphilanthropies.org
- San Francisco, CA
- twphilanthropies.org