Henry L Guenther Foundation
Seal Beach, CA · EIN 956026937 990-PF tax year 2024
Historical funder research: IRS Form 990-PF filings from US private foundations, showing who funded what in past years. This is not a list of currently open grant calls, and we do not track open RFPs from private foundations. From public IRS Form 990-PF filings (latest on file for this funder: tax year 2024). Coverage: tax years 2019–2025. Freshness: the IRS releases these returns 1.5–2+ years after the tax year ends, so 2025 is still partial and a funder's newest grants may not appear yet. Last updated: November 14, 2026. Filings can contain errors, so confirm current priorities and deadlines with the funder before applying.
Grants paid (tax yr 2024)
$4,199,500
Assets (fair market value)
$115,925,175
Median grant to orgs
$25,000
all loaded years
Grants in our data
155
since tax year 2022
Giving by tax year
$3,753,300
2022
51 grants
$3,462,000
2023
46 grants
$4,199,500
2024
58 grants
Year 2025 is still partial because many returns have not been filed or released yet. That is a freshness issue — coverage in our dataset is tax years 2019–2025.
Top recipient states
CA$11,414,800
Cause areas funded
Health Care12
Human Services24
Philanthropy & Voluntarism2
Science & Technology1
Education8
Food, Agriculture & Nutrition5
Mental Health & Crisis2
Youth Development5
Only 51.0% of this funder's organizational grants could be linked to an IRS cause code.
How to apply (from the 990-PF, tax year 2024)
- Form & materials
- The Guenther Foundation accepts applications for grants from qualified tax-exempt charitable organizations operating within the State of California. Applications are not accepted from individuals. Regular meetings of the Guenther Foundation Board of Directors are held semi-annually in the winter and summer to consider and take final action on pending applications for grants. Effective with the October 31, 2020 deadline, all applications must be submitted online; the Guenther Foundation will no longer accept mailed or hand-delivered paper copies. Applications must be fully completed directly on the henry L. Guenther Foundation website by October 31 for consideration at the board of directors meeting held in January, and by May 31 for consideration at the meeting held in July. Prospective applicants are requested to communicate with the Guenther Foundation office only by letter or email (no telephone calls please). Please visit guentherfoundation.org/how-to-apply/ for more information.
- Deadlines
- OCTOBER 31ST AND MAY 31ST
- Restrictions
- IN GENERAL, THE FOUNDATION APPLIES ITS RESOURCES TO PRESERVE AND ENRICH THE BENEFITS TO BE DERIVED BY CALIFORNIA RESIDENTS, AND PRINCIPALLY THOSE RESIDING IN SOUTHERN CALIFORNIA. THE FOUNDATION HAS ESTABLISHED POLICIES (ATTACHED) TO GUIDE ITS BOARD OF DIRECTORS IN ALLOCATING ITS DONATIONS. THESE POLICIES ARE NOT RIGID AND OCCASIONAL EXCEPTIONS MAY BE MADE TO SOME OF THEM UNDER UNUSUAL CIRCUMSTANCES.
Recent grants to organizations
| Recipient | Location | Purpose (as filed) | Amount | Tax yr |
|---|---|---|---|---|
| Rady Children's Hospital- San Diego | San Diego, CA | support the Little Heroes League Care Coordination Program. | $500,000 | 2024 |
| Providence Little Company of Mary Foundation | Torrance, CA | support equipment and technology upgrades for the Del Vicario Cardiovascular Center of Excellence to improve the way in which we diagnose and treat cardiovascular care in community. | $450,000 | 2024 |
| Cedars-Sinai Medical Center | Los Angeles, CA | support Thermo Fisher Bigfoot Spectral Flow Cytometer and Cell Sorter which represents the greatest innovation in the field of research and provides exponential levels of resolution to identify rare single cells contributing to diseases. | $450,000 | 2024 |
| Glendale Adventist Medical Center Foundation | Glendale, CA | renovate four catheterization labs. | $300,000 | 2024 |
| Salk Institute for Biological Studies | La Jolla, CA | purchase an Axioscan 7 system. | $288,000 | 2024 |
| Long Beach Medical Center | Long Beach, CA | purchase a new laser system necessary for minimally invasive cardiovascular procedures including coronary and peripheral atherectomies, thoracic aortic aneurysm repair, endovascular abdominal aortic repair, and more. | $250,000 | 2024 |
| Saint John's Health Center Foundation | Santa Monica, CA | purchase the next-generation sequencer NextSeq2000. | $200,000 | 2024 |
| Braille Institute of America Inc | Los Angeles, CA | support library services. | $200,000 | 2024 |
| Jenesse Center Inc | Los Angeles, CA | renovate a recently purchased facility in an unserved/underserved section of South Los Angeles to provide comprehensive services to transition violence victims from crisis to stability and on to self-sufficiency. | $150,000 | 2024 |
| Mater Dei High School | Santa Ana, CA | support construction of a performing arts center to support the Mater Dei community as well as the broader Santa Ana and Orange County communities. | $100,000 | 2024 |
| Richstone Center Inc | Hawthorne, CA | To identify and implement a new County and State compliant electronic health record (EHR) system. | $85,000 | 2024 |
| Alzheimer's Greater Los Angeles | Los Angeles, CA | support the clinical team for dementia care to vulnerable patients. | $75,000 | 2024 |
| American Red Cross | Santa Ana, CA | purchase a new Ram ProMaster 3500. | $62,000 | 2024 |
| The Dragon Kim Foundation | Irvine, CA | expand opportunities for youth through equitable and inclusive entrepreneurship leadership training opportunities for high school students across Southern CA. | $50,000 | 2024 |
| Conejo Free Clinic | Thousand Oaks, CA | sustain and expand the Conejo Free Clinic's Senior Dentistry Program by supporting direct treatment, treatment supplies and advanced specialty dentures; completed care for over 400 low income seniors with no options for care. | $50,000 | 2024 |
| Union Station Homeless Services | Pasadena, CA | renovate the permanent supportive housing building Euclid Villa. | $50,000 | 2024 |
| Second Harvest Food Bank of Orange County | Irvine, CA | support operation of Harvest Solutions Farm. | $50,000 | 2024 |
| Madera County Food Bank | Madera, CA | provide current patrons with additional food support and expand the current number of patrons. | $50,000 | 2024 |
| Los Angeles House of Ruth | Los Angeles, CA | help cover the final costs of the building of a Community Building. | $50,000 | 2024 |
| House Institute Foundation | Los Angeles, CA | sustain and grow research, education, and hearing health care initiatives. | $50,000 | 2024 |
| Fallbrook Senior Citizens Service Club | Fallbrook, CA | buy food and pay staff for the Nutrition Program that aims to reduce both food insecurity and social isolation among older adults by offering nutritious meals, entertainment, and activities in a communal setting. | $45,000 | 2024 |
| St Anne's Family Services | Los Angeles, CA | support young women and girls impacted by foster care and juvenile justice in our Short-Term Residential Therapeutic Program (STRTP), ages 13-18, and Transitional Housing Program, ages 18-25, who are pregnant and parenting. | $40,000 | 2024 |
| Project Understanding of San Buenaventura | Ventura, CA | purchase a used truck to transport food donations. | $35,000 | 2024 |
| St Vincent De Paul Village Inc | San Diego, CA | purchase a panoramic radiograph and an oral surgery handpiece for dental clinic to improve access to - and quality of - oral health care for neighbors experiencing or at-risk of homelessness. | $32,000 | 2024 |
| United Through Reading | San Diego, CA | support Southern CA programming through book distribution events, ensure deploying units have equipment and supplies needed for story stations, operate the Mobile Story Station West, and train United Through Reading volunteers. | $30,000 | 2024 |
Grants to individuals are counted but not named.
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