Carol and Warren Sinsheimer is a nonprofit organization focused on Education, based in San Luis Obispo, CA. IRS filing data is available from 2019 through 2025. In 2025, it awarded 23 grants totaling $12K.
Key facts about Carol and Warren Sinsheimer
- EIN
- 77-0457296
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $11,800
- Grants made (2025)
- 23
- Average grant
- $513
- Median grant
- $500
- Primary geography
- California (89% of itemized 2025 grant dollars)
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Carol and Warren Sinsheimer funds
By grant dollars, the top recipient states for Carol and Warren Sinsheimer's 23 itemized 2025 grants were California (89%). The most frequent recipient cities were San Luis Obispo, CA (15 grants) and Washington, DC (2 grants). 22% of grants with a stated purpose were for general or operating support. Recurring purposes include "Environmental Conservation" (5 grants), "Public Welfare" (4 grants) and "Support Arts in the Community" (4 grants).
How Carol and Warren Sinsheimer gives
Estimate from itemized IRS Form 990-PF grant lists (2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Next steps with Carol and Warren Sinsheimer
- How to evaluate Carol and Warren Sinsheimer as a funder
Our grant prospecting guide: read the 990-PF, check fit, and decide whether to apply.
- Draft an LOI to Carol and Warren Sinsheimer with AI
AI grant writing that drafts from your organization’s own materials, in your voice.
- Track this opportunity in a free grant tracker
A free Google Sheets or Excel template for deadlines, award terms, and reports due.
Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
—
Annual Giving
$12K
-16.9% YoY
Grant Count
23
+15.0% YoY
Avg Grant Size
$513.043
-27.7% YoY
About Carol and Warren Sinsheimer
Based on IRS filings
Carol and Warren Sinsheimer is a nonprofit organization focused on Education, based in San Luis Obispo, CA. IRS filing data is available from 2019 through 2025. In 2025, it awarded 23 grants totaling $12K.
Focus Areas
Ready to take the next step with Carol and Warren Sinsheimer?
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of all 23 itemized 2025 grant dollars.
Cities
Financial History
Multi-year comparison from IRS filings
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | — | — | — |
| Revenue | — | — | — |
| Expenses | — | — | — |
| Qualifying Distributions | — | — | — |
| Net Investment Income | — | — | — |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2019–2025
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
Grant Size Distribution
98 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2025 grants, the largest recipients include Slo Noor Foundation ($2,500), Meals That Connect ($1,000), Slo Repertory Theatre ($1,000).
| Recipient | Purpose | Amount |
|---|---|---|
| SLO NOOR FOUNDATION San Luis Obispo, CA | PUBLIC HEALTHCARE | $2,500 |
| MEALS THAT CONNECT San Luis Obispo, CA | NUTRITION AND SUPPORT FOR SENIORS | $1,000 |
| SLO REPERTORY THEATRE San Luis Obispo, CA | SUPPORT ARTS IN THE COMMUNITY | $1,000 |
| TRANSITIONS MENTAL HEALTH ASSOC San Luis Obispo, CA | PUBLIC WELFARE | $1,000 |
| SLO INTERNATIONAL FILM FESTIVAL San Luis Obispo, CA | SUPPORT ARTS IN THE COMMUNITY | $1,000 |
| COMMUNITY COUNSELING CENTER San Luis Obispo, CA | GENERAL FUND SUPPORT | $500 |
| HOSPICE OF SLO COUNTY San Luis Obispo, CA | GENERAL FUND SUPPORT | $500 |
| LUMINA ALLIANCE San Luis Obispo, CA | GENERAL FUND SUPPORT | $500 |
| MONO LAKE COMMITTEE Lee Vining, CA | ENVIRONMENTAL CONSERVATION | $500 |
| PLANNED PARENTHOOD San Luis Obispo, CA | PUBLIC HEALTHCARE | $500 |
Leadership & Key People
Officers and directors from IRS filings
Compensation Overview
No officer or director reported compensation in the available filings.
From 2025 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Warren a Sinsheimer III | President | 0.5 | — |
| Carol Sinsheimer | Secretary/VP | 0.5 | — |
| Warren Angus Sinsheimer | Director | — | — |
| Amy E Sinsheimer | Director | — | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What is Carol and Warren Sinsheimer?
Carol and Warren Sinsheimer is a nonprofit organization focused on Education, based in San Luis Obispo, CA. It holds — in total assets as of 2025.
Where does Carol and Warren Sinsheimer operate?
Carol and Warren Sinsheimer has awarded grants in Alabama, California, District of Columbia, Louisiana, New York, Utah, Virginia, Washington.
What size grants does Carol and Warren Sinsheimer award?
In 2025, Carol and Warren Sinsheimer awarded 23 grants totaling $12K — an average of about $513.043 per grant, based on its IRS Form 990 filings.
What is Carol and Warren Sinsheimer's EIN?
Carol and Warren Sinsheimer's EIN (Employer Identification Number) is 77-0457296. IRS Form 990 filing data is available on this page for 2019–2025.
Explore Open Grants
Browse active grant opportunities in Carol and Warren Sinsheimer's focus areas in our free grants database
Similar Funders
Funders that support many of the same organizations
Sol & Hilda Furst Foundation
Huntington, NY
Assets
$397K
Grants
11
Total Given
$44K
The Kroll Family Foundation
Briarcliff Manor, NY
Assets
$565K
Grants
38
Total Given
$27K
Noonmark Foundation
Mount Vernon, IA
Assets
—
Grants
82
Total Given
$16K
The Blum Family Foundation
Nashville, TN
Assets
$372K
Grants
92
Total Given
$405K
Ge Aerospace Foundation
Norwalk, CT
Assets
$22.5M
Grants
2,467
Total Given
$15.3M
The Arthur & Patricia Price Foundation
Encino, CA
Assets
$3.8M
Grants
77
Total Given
$254K
Helen J and Thomas Nelson Urban Sr
Des Moines, IA
Assets
—
Grants
43
Total Given
$68K
Silicon Valley Community Foundation
Mountain View, CA
Assets
$12.3B
Grants
3,576
Total Given
$3.2B
Tides Foundation
San Francisco, CA
Assets
$534.5M
Grants
2,110
Total Given
$382.1M
California Community Foundation
Los Angeles, CA
Assets
$2.2B
Grants
2,025
Total Given
$272.6M
The William & Flora Hewlett Foundation
Menlo Park, CA
Assets
$14.2B
Grants
2,001
Total Given
$625.0M
Sempra Foundation
San Diego, CA
Assets
$11.5M
Grants
1,501
Total Given
$1.8M
More Funders in California
Data last updated September 2026. Sourced from IRS Form 990-PF filings.