Troper Wojcicki Foundation
The Troper Wojcicki Foundation is a private foundation based in San Francisco, California. Its 2024 grants supported organizations working in areas including cancer research, environmental protection, education, humanitarian response, and family homelessness.
Troper Wojcicki Foundation at a glance
In short: Troper Wojcicki Foundation gave $15.8M across 60 grants in 2024 (avg $264K), top state California. 29% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $15,829,456
- -10.0% vs 2023
- Grants made (2024)
- 60
- +22.4% vs 2023
- Average grant
- $263,824
- -26.5% vs 2023
- Median grant
- $210,122
- Total assets
- $339,320,002
- +17.4% vs 2023
- New grantees (estimate)
- 29% first-time grantees (16 of 55, 2024)
- Primary geography
- California (44% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Troper Wojcicki Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: 1660 Bush Street Suite 300, San Francisco, CA 94109
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Troper Wojcicki Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Dana-Farber Cancer Institute Inc ($1.0M across 2 grants). Together the top 10 received $7.7M.
Grant Size Distribution
232 grants across all recorded years
The most common grant size was under $50K: 60 grants of 232 (26%).
Geographic Focus
Where this funder awards grants
In 2024, California organizations received 44% of grant dollars, followed by organizations in New York (19%), Massachusetts (14%), Virginia (6%), and Texas (4%).
Grant Distribution by State
Share of 2024 grant dollars across all 60 itemized grants.
States
Cities
Is Troper Wojcicki Foundation open to new grantees?
29%
first-time grantees, 2024
In 2024, 16 of 55 grantees (29%) were first-time recipients. First grants averaged $189K; repeat grants $328K. How we count
Medians: $133K first-time, $250K repeat.
- 60% of 2024 grantees were also funded in 2023. Method
- Giving held roughly steady from 2021 to 2024 (+11%). Method
- In 2024 it paid out 135% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2021–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2021 to 2024, annual grant giving ranged from $11.6M (2022) to $17.6M (2023). In 2024 it made 60 grants totaling $15.8M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Memorial Sloan-Kettering Cancer Center New 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 |
| Rainforest Trust Warrenton, VA | General Operating Support | $1,000,000 |
| Room to Read San Francisco, CA | General Operating Support | $1,000,000 |
| International Rescue Committee Inc San Jose, CA | General Operating Support | $750,000 |
| Partners in Health Boston, MA | General Operating Support | $750,000 |
| Dana-Farber Cancer Institute Inc Boston, MA | Ampvax: a Disruptive Personal Cancer Vaccine | $606,667 |
| California Academy of Sciences San Francisco, CA | General support ($470k/year) and science trustees table at the annual gala ($30k/year) | $500,000 |
| Earthjustice San Francisco, CA | General Operating Support | $500,000 |
| Environmental Defense Fund Incorporated New York, NY | General Operating Support | $500,000 |
| Hamilton Families San Francisco, CA | General Operating Support | $500,000 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2024 | $339,320,002 | $33,262,240 | $21,659,053 | $15,829,456 | 60 | $20,662,802 | $14,216,824 | $15,334,815 |
| 2023 | $289,144,583 | $36,764,309 | $19,057,464 | $17,595,579 | 49 | $18,284,737 | $23,487,188 | $12,915,633 |
| 2022 | $229,782,808 | $28,505,551 | $12,540,682 | $11,630,204 | 47 | $11,943,577 | $17,245,065 | $13,002,960 |
| 2021 | $311,543,592 | $38,595,659 | $14,736,954 | $14,301,176 | 76 | $14,437,131 | $11,945,645 | $13,306,237 |
Under IRS private-foundation payout rules, Troper Wojcicki Foundation reported a distributable amount of $15.3M for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No foundation mission statement is provided. Its 2024 grants included support for cancer research and treatment, environmental organizations, education, humanitarian work, and services addressing family homelessness. For example, Memorial Sloan Kettering Cancer Center describes its mission as advancing cancer prevention, treatment, and cure through patient care, research, outreach, and education. Room to Read says it envisions a world free from illiteracy and gender inequality, while Hamilton Families states that its mission is to end family homelessness in the San Francisco Bay Area.
Grantmaking
In 2024, the foundation reported 60 grants totaling $15,829,456. Grant amounts ranged from $1,000 to $1,000,000, with a median of $210,122. Among the largest grants were $1,000,000 each to Memorial Sloan Kettering Cancer Center for a clinical trial and to Rainforest Trust and Room to Read for general operating support. Other notable grants included $750,000 to the International Rescue Committee and $750,000 to Partners in Health, both for general operating support, and $606,667 to Dana-Farber Cancer Institute for a personal cancer vaccine.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Dennis Troper as president as of September 2024 and Stephen Magowan as treasurer/secretary as of that date. Susan Wojcicki is listed as president until September 2024, and Dennis Troper as treasurer/secretary until then.
Troper Wojcicki Foundation's only listed officer is Stephen Magowan, Treasurer & Secretary on the 2024 filing (uncompensated).
Officers on the 2024 filing
Stephen Magowan
Treasurer & Secretary
New on the 2024 filing
0.5 hrs/week
No compensation reported
Former officers (3)
- Former: Dennis Troper (2021–2024) — President, Treasurer & Secretary · Filing note: Until 924
- Former: Susan Wojcicki (2021–2024) — President · Filing note: Until 924
- Former: Monica Gnanadev (2021–2023) — Audit Committee Chair
Data from IRS Form 990 filings, 2021–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Frequently asked questions about Troper Wojcicki Foundation
How much does Troper Wojcicki Foundation give each year?
Troper Wojcicki Foundation gave $15.8M across 60 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $17.6M across 49 grants.
What is Troper Wojcicki Foundation's typical grant size?
Troper Wojcicki Foundation's median grant in 2024 was $210,122, and its average grant was $263,824, across 60 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Troper Wojcicki Foundation that year got $189K on average.
Where does Troper Wojcicki Foundation give grants?
Troper Wojcicki Foundation's top state is California, with 44% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were New York (19%) and Massachusetts (14%). The most frequent recipient cities were San Francisco, CA (9 grants), New York, NY (7 grants), San Jose, CA (4 grants) and Palo Alto, CA (4 grants).
Does Troper Wojcicki Foundation give general operating support?
Yes: 67% of Troper Wojcicki Foundation's 2024 grants with a stated purpose (40 of 60) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Troper Wojcicki Foundation's largest grantees?
Troper Wojcicki Foundation's largest 2024 grantees include Dana-Farber Cancer Institute Inc ($1,020,667 across 2 grants), Memorial Sloan-Kettering Cancer Center ($1,000,000) and Rainforest Trust ($1,000,000), according to its 2024 IRS Form 990-PF. Together they received 19% of its itemized 2024 grant dollars.
How large is Troper Wojcicki Foundation?
Troper Wojcicki Foundation reported $339.3M in total assets on its 2024 IRS Form 990-PF. It paid out $20.7M in qualifying distributions that year, against a required minimum of $15.3M (roughly 5% of its investment assets).
What does Troper Wojcicki Foundation fund?
No foundation mission statement is provided. Its 2024 grants included support for cancer research and treatment, environmental organizations, education, humanitarian work, and services addressing family homelessness. See mission & focus areas ↑
How do I apply for a grant from Troper Wojcicki Foundation?
The foundation makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Troper Wojcicki Foundation's EIN?
Troper Wojcicki Foundation's EIN (Employer Identification Number) is 20-2777268. IRS Form 990 filing data is available on this page for 2021–2024.
Does Troper Wojcicki Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2021–2024
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Cite this profile
Grantable. (2026). Troper Wojcicki Foundation funder profile. GrantGraph. Retrieved October 10, 2026, from https://grantable.co/funders/troper-wojcicki-foundation-morg_16f8bb6d0ab8442582791aa4ea96ed04
BibTeX
@misc{grantable_202777268_2026,
author = {{Grantable}},
title = {{Troper Wojcicki Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/troper-wojcicki-foundation-morg_16f8bb6d0ab8442582791aa4ea96ed04},
note = {Accessed 2026-10-10. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Troper Wojcicki Foundation's IRS filings (methodology). AI-written summaries, news items and logos are not covered by the open licence. Spot an error? Email hello@grantable.co.
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