California · Private foundation
Nancy and Geoffrey Stack Family Foundation
Its FY2025 filing reports that it funds preselected organizations and did not take unsolicited requests; check the foundation's own site before ruling it out.
- $1.1M
- Granted FY2025(still arriving)
- 15
- Grants FY2025
- 20
- Organizations funded FY2024
- 0%
- First-time grantees FY2024
- Median grant, FY2025
- $10,000
- Largest grant, FY2025
- $825,000
- Organizations funded a year
- 16 to 34
- FY2018 to FY2024
- States reached, FY2025
- 4
- Total assets, FY2025
- $2.7M
- Applications
- Preselected organizations only
- Per its most recent filing; check its own site
How open it is to new grantees
In FY2024, 0% of the organizations Nancy and Geoffrey Stack Family Foundation funded were first-time grantees, receiving 0% of its grant dollars.
New vs renewed · share of each year
In FY2024, 100% of grant dollars renewed an existing relationship; $0 went to new ones.
Where new relationships form · theme of each grantee’s first grant
How this is measured
The numbers by year
| Fiscal year | Organizations funded | To those organizations | First-time grantees |
|---|---|---|---|
| FY2025still arriving | 13 | $1.1M | 15% |
| FY2024 | 20 | $3.2M | 0% |
| FY2023 | 16 | $1.6M | 13% |
| FY2022 | 33 | $2.1M | 27% |
| FY2021 | 31 | $1.5M | 19% |
| FY2020 | 26 | $1.3M | 50% |
| FY2019 | 31 | $1.1M | 35% |
| FY2018 | 34 | $1.3M | 41% |
What it funded, over time
Every grant placed by its stated purpose and the recipient’s mission, by year, FY2017 to 2024.
Where its grants go
Grant dollars by states, across the years we hold.
Which US states its grants reach
Top grantees
Largest recipients by total granted, FY2017 to FY2025, and the share of each one’s budget the grants supplied at peak.
| Grantee | Total granted | Years | Share of their budget |
|---|---|---|---|
| United Way Inc | $4,375,000 | 7 | 2% |
| Uc San Diego Foundation | $3,300,000 | 3 | 1% |
| University of California Irvine Foundation | $1,650,000 | 5 | 0% |
| Cystinosis Research Foundation | $1,300,000 | 6 | 13% |
| Laura's House | $625,000 | 8 | 2% |
| The Uli Foundation | $265,000 | 6 | 1% |
| Hoag Hospital Foundation | $205,000 | 5 | 0% |
| Chapman University | $150,000 | 3 | 0% |
| Marine Corps Scholarship Foundation Inc | $127,000 | 9 | 0% |
| 24 Hours for Hank Inc | $106,000 | 2 | 1% |
Show all 57 grantees
What it could do for these grantees
Plus 32 recipients with no EIN on record ($1.5M), not named here.
Where it is load-bearing
Each grantee by its size and the share of its budget Nancy and Geoffrey Stack Family Foundation supplied at peak.
Tap a dot to name the grantee.
How this is measured
Co-funders
Grantmakers whose grantees overlap with this funder’s far more than size alone predicts. Closer means stronger alignment; arcs show where they also fund each other. Here they form a tightly interlocked group: most of these funders back each other's grantees too.
Open a dossier: Orange County Community Foundation · Argyros Family Foundation · Croul Family Foundation · Jewish Community Foundation of Orange County · The William Gillespie Foundation · The Beall Family Foundation · Gs Donor Advised Philanthropy Fund for Wealth Management Inc · California Community Foundation · Frome Family Foundation · Witte-Sakamoto Family Foundation · The Neisser Family Foundation · Ueberroth Family Foundation
How this is measured
Compare Nancy and Geoffrey Stack Family Foundation with peer funders
Warm introductions · Powered by PlinthPlus
How do I get to Nancy and Geoffrey Stack Family Foundation?
Find your warmest path to Nancy and Geoffrey Stack Family Foundation through trustees and officers whose names appear on both boards. Search for your organization and Plinth traces the shortest route it can evidence.
Each link is a name appearing on two organizations’ public IRS 990 filings, matched on that name and, where the filings support it, on location. A same-state match has geographic support, which is a second matching feature rather than confirmation that the two are one person; a cross-state one is the likeliest to be two people who share a name. Every hop shows its tier, low-confidence and distant paths are held back rather than guessed, and it is worth confirming the person before you use the introduction.
About Nancy and Geoffrey Stack Family Foundation
- How much does Nancy and Geoffrey Stack Family Foundation give?
- Nancy and Geoffrey Stack Family Foundation reported 15 grants totaling $1,120,500 in its FY2025 IRS filing. It funded between 16 and 34 organizations a year over FY2018 to FY2024.
- What does Nancy and Geoffrey Stack Family Foundation fund?
- By grant dollars over FY2017 to FY2025, its largest causes are Education (41%), Philanthropy (33%), Health (12%).
- Who are Nancy and Geoffrey Stack Family Foundation's largest grantees?
- By total granted over FY2017 to FY2025: United Way Inc ($4.4M), Uc San Diego Foundation ($3.3M), University of California Irvine Foundation ($1.6M).
- Does Nancy and Geoffrey Stack Family Foundation fund new organizations?
- In FY2024, 0% of the organizations it funded were first-time grantees.
- Does Nancy and Geoffrey Stack Family Foundation accept unsolicited applications?
- Its most recent filing reports that it funds preselected organizations and does not take unsolicited requests. Check the foundation's own site before ruling it out.
- Which funders back the same organizations as Nancy and Geoffrey Stack Family Foundation?
- Its strongest co-funders, measured against what their size predicts, include Orange County Community Foundation, Argyros Family Foundation, Croul Family Foundation.
- Where is Nancy and Geoffrey Stack Family Foundation based?
- Nancy and Geoffrey Stack Family Foundation is based in CA.
Play a game based on Nancy and Geoffrey Stack Family’s filings →