JK Irwin Foundation
JK Irwin Foundation is a private foundation, based in San Francisco, CA. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $449K in total assets. In 2024, it awarded 7 grants totaling $56K. Net investment income was $37K.
JK Irwin Foundation at a glance
In short: JK Irwin Foundation gave $56K across 7 grants in 2024 (avg $8K), mostly in California. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $55,500
- -59.5% vs 2023
- Grants made (2024)
- 7
- -53.3% vs 2023
- Average grant
- $7,929
- -13.2% vs 2023
- Median grant
- $5,000
- Total assets
- $448,636
- -4.3% vs 2023
- Primary geography
- California (86% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated September 2026.
Who JK Irwin Foundation funds
How this funder distributes its grants
Top Recipients
Top 7 recipients in 2024
The largest 2024 recipient was SF State Foundation ($25K). Together the top 7 received $56K.
Grant Size Distribution
66 grants across all recorded years
The most common grant size was under $50K: 66 grants of 66 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2024 grant dollars across all 7 itemized grants.
Cities
How JK Irwin Foundation gives
- Giving fell 61% from 2021 to 2024. Method
- In 2024 it paid out 293% of its IRS minimum distribution (the 5% rule). Method
From the foundation's IRS Form 990-PF filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2020 to 2024, annual grant giving ranged from $56K (2024) to $144K (2021). In 2024 it made 7 grants totaling $56K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| SF State Foundation San Francisco, CA | Financial Support for San Francisco State University Foundation. | $25,000 |
| City Surf Project San Francisco, CA | We ensure Bay Area youth have equitable access to the ocean, and through surf instruction. | $10,000 |
| Uncommon Law Oakland, CA | Financial Support for Uncommon Law | $5,000 |
| Drug Policy Alliance New York, NY | To Broaden the Public Debate on DRU | $5,000 |
| Uc Berkeley Foundation Berkeley, CA | The UC Berkeley Foundation supports and advances the University of California at Berkeley to assure its place as a preeminent global institution by encouraging private philanthropy, providing leadership and serving as an advisory council and steady source of assistance to Berkeleys Chancellor and to the campus as a whole. | $5,000 |
| Headlands Center for the Arts Sausalito, CA | Headlands Center for the Arts provides an unparalleled environment for the creative process and the development of new work and ideas. | $3,000 |
| Voice for Program Ed Fund Washington, DC | alvanizes the advocacy of business leaders, entrepreneurs, philanthropists, and other prominent individuals who unite to champion a healthy climate and environment, strengthen our democracy, and ensure economic and social justice for all. | $2,500 |
Ready to take the next step with JK Irwin Foundation?
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 | $448,636 | $39,947 | $72,127 | $55,500 | 7 | $69,305 | $37,125 | $23,678 |
| 2023 | $468,972 | $35,032 | $143,565 | $137,000 | 15 | $140,978 | $32,445 | $26,365 |
| 2022 | $552,749 | $22,195 | $126,118 | $123,700 | 16 | $124,783 | $20,860 | $32,927 |
| 2021 | $772,139 | $66,235 | $153,684 | $143,500 | 15 | $148,463 | $61,014 | $41,179 |
| 2020 | $813,318 | $42,698 | $139,845 | $134,000 | 13 | — | $39,599 | $40,037 |
Under IRS private-foundation payout rules, JK Irwin Foundation reported a distributable amount of $24K for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
JK Irwin Foundation is led by Marsha Rosenbaum, President on every filing since 2020; none of the 4 officers listed in 2024 report compensation.
Officers on the 2024 filing
Marsha Rosenbaum
President
On filings since 2020
5 hrs/week
No compensation reported
Anne Irwin
Vice President
On filings since 2020
1 hr/week
No compensation reported
Drummond Pike
Treasurer
On filings since 2020
1 hr/week
No compensation reported
Suzanne Gollin
Secretary
On filings since 2020
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2024. "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 JK Irwin Foundation
How much does JK Irwin Foundation give each year?
JK Irwin Foundation gave $56K across 7 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $137K across 15 grants.
What is JK Irwin Foundation's typical grant size?
JK Irwin Foundation's median grant in 2024 was $5,000, and its average grant was $7,929, across 7 grants on its 2024 IRS Form 990-PF.
Where does JK Irwin Foundation give grants?
JK Irwin Foundation gives mostly in California: 86% of the grant dollars itemized on its 2024 IRS Form 990-PF went to recipients there. The next largest state was New York (9%). The most frequent recipient cities were San Francisco, CA (2 grants).
Does JK Irwin Foundation give general operating support?
Not in 2024: none of the 7 grants with a stated purpose on JK Irwin Foundation's 2024 IRS Form 990-PF were described as general or operating support.
Who are JK Irwin Foundation's largest grantees?
JK Irwin Foundation's largest 2024 grantees include SF State Foundation ($25,000), City Surf Project ($10,000) and Uncommon Law ($5,000), according to its 2024 IRS Form 990-PF. Together they received 72% of its itemized 2024 grant dollars.
How large is JK Irwin Foundation?
JK Irwin Foundation reported $449K in total assets on its 2024 IRS Form 990-PF. It paid out $69K in qualifying distributions that year, against a required minimum of $24K (roughly 5% of its investment assets).
What is JK Irwin Foundation's EIN?
JK Irwin Foundation's EIN (Employer Identification Number) is 56-2678107. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Live grants for the work JK Irwin Foundation funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
Explore Open Grants
Browse active grant opportunities in JK Irwin Foundation's focus areas in our free grants database
Similar Funders
Funders with grantees in common, and similar funders in California
Silicon Valley Community Foundation
Mountain View, CA
Silicon Valley Community Foundation funds work in areas such as housing, economic security, education, health, the environment, arts and culture, and civic engagement, with Community Action Grants supporting local, community-led organizations in San Mateo and Santa Clara counties. Its 2024 grants had a median of $51,716, though amounts varied widely; applications depend on the program, and SVCF states that it does not accept unsolicited proposals for advised funds.
Assets
$12.3B
Grants
3,576
Total Given
$3.2B
The James Irvine Foundation
San Francisco, CA
The James Irvine Foundation funds initiatives that help low-income Californians advance economically, including career opportunities, worker rights, inclusive local economies, and related policies and housing affordability. Its 2024 grants ranged from $150 to $11.15 million, with a median of $10,000; its focus is California. It does not accept unsolicited funding requests or inquiries and gives only to preselected organizations.
Assets
$3.4B
Grants
654
Total Given
$154.1M
The California Wellness Foundation
Los Angeles, CA
The California Wellness Foundation funds California-focused work to improve health and wellness, including community-led efforts, direct services, advocacy, and civic engagement. Its 2024 grants ranged from $150 to $1 million, with a median of $7,500. It is not accepting unsolicited requests in 2026.
Assets
$1.0B
Grants
681
Total Given
$48.8M
The Chicago Community Trust
Chicago, IL
The Chicago Community Trust funds eligible nonprofits working to narrow the wealth gap and meet urgent needs, with priorities including economic mobility, education, jobs, homeownership, and community development in metropolitan Chicago and Cook County. Its 2025 grants had a median of $26,500, though amounts varied widely; the profile does not state whether it accepts unsolicited requests.
Assets
$7.1B
Grants
4,316
Total Given
$1.2B
Marin Community Foundation
Novato, CA
Marin Community Foundation funds work in affordable housing and homelessness, community resilience and power, as well as social services, education, arts and conservation, with a focus on marginalized Marin County residents and some broader U.S. and international grantmaking. Its 2025 grants had a median of $25,000, though amounts varied widely. The profile does not state whether it accepts unsolicited requests.
Assets
$1.3B
Grants
1,573
Total Given
$186.1M
California Community Foundation
Los Angeles, CA
The California Community Foundation supports nonprofits through discretionary and donor-directed grants, with discretionary priorities including education, health, housing and immigration, alongside other areas such as arts, civic engagement and economic opportunity. Its 2025 grants had a median of $50,000, and its work is focused on Los Angeles County; prospective discretionary applicants are asked to contact the relevant program officer before submitting a letter of intent.
Assets
$2.3B
Grants
2,174
Total Given
$326.6M
More similar funders
More Funders in California
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from JK Irwin 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.
JK Irwin Foundation down — hundreds of funders to go?