Harold J Miossi Charitable Trust
The Harold J. Miossi Charitable Trust is a private foundation based in San Luis Obispo, California. It provides assistance to organizations working to improve quality of life for residents of San Luis Obispo and the surrounding area, with a focus on animal-related programs, education, the environment, the Catholic Church, fine arts, and youth development.
Harold J Miossi Charitable Trust at a glance
In short: Harold J Miossi Charitable Trust gave $2.7M across 25 grants in 2025 (avg $107K), mostly in California. 32% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $2,682,108
- +51.5% vs 2024
- Grants made (2025)
- 25
- +25.0% vs 2024
- Average grant
- $107,284
- +21.2% vs 2024
- Median grant
- $17,000
- Total assets
- $4,594,401
- -30.0% vs 2024
- New grantees (estimate)
- 32% first-time grantees (8 of 25, 2025)
- Primary geography
- California (100% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026. New grantees are estimated by matching recipient names across years (methodology).
How to apply to Harold J Miossi Charitable Trust
- How to Apply
-
Submit the application package and materials described above. The Trust’s filing says it does not restrict giving to preselected organizations.
- Review Cycle
- The filing states an annual application period of January 1 through May 30. The 2026 period has passed.
- Deadline
- The filing states an annual application period of January 1 through May 30.
- Contact
Application contact: Howard Carroll Trustee
Mailing address: PO Box 1025, San Luis Obispo, CA 93406-1025
Phone: (805) 541-0178
Website: https://miossicharitabletrust.org
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Open Grants
1 open opportunity from Harold J Miossi Charitable Trust
Who Harold J Miossi Charitable Trust funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was SLO Museum of Arts ($1.6M). Together the top 10 received $2.5M.
Grant Size Distribution
104 grants across all recorded years
The most common grant size was under $50K: 73 grants of 104 (70%).
Geographic Focus
Where this funder awards grants
The Trust focuses on San Luis Obispo and the surrounding area. Its website says organizations in other geographic areas may be considered when their work supports residents of that area. The 2025 filing specifies California-based charitable organizations and projects benefiting San Luis Obispo County residents. All 2025 grant dollars went to recipients in California.
Grant Distribution by State
Share of 2025 grant dollars across all 25 itemized grants.
States
Cities
Is Harold J Miossi Charitable Trust open to new grantees?
32%
first-time grantees, 2025
In 2025, 8 of 25 grantees (32%) were first-time recipients. First grants averaged $70K; repeat grants $125K. How we count
Medians: $14K first-time, $20K repeat.
- 60% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (+13%). Method
- In 2025 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2019–2025). 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 2019 to 2025, annual grant giving ranged from $770K (2021) to $2.7M (2025). In 2025 it made 25 grants totaling $2.7M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| SLO Museum of Arts San Luis Obispo, CA | Capital Campaign & Financial MGR | $1,600,000 |
| SLO Botanical Garden San Luis Obispo, CA | Reconstruct Parking Lot | $310,355 |
| San Luis Coastal Education San Luis Obispo, CA | Paddle Raise - Pow for 3RDH and 4TH | $137,200 |
| Central Coast Salmon Enhancement Arroyo Grande, CA | Pow 4TH & 5TH, SLO Re-Wilding & Restoration | $120,700 |
| Pacific Wildlife Care Morro Bay, CA | Ridenour Center | $100,000 |
| The Land Conservancy of SLO San Luis Obispo, CA | Torro Preserve Phase II | $100,000 |
| Community Counseling Center of SLO San Luis Obispo, CA | Therapy programs to support psychological healing and emotional well-being. | $75,000 |
| The Bay Foundation of Morro Bay Morro Bay, CA | Bioassessment Monitoring of the Morro Bay Watershed | $31,453 |
| French Medical Center Foundation San Luis Obispo, CA | Dog Therapy | $20,900 |
| Big Brothers Big Sisters San Luis Obispo, CA | School based programs at pacheco and hawthorne elementary schools | $20,000 |
Ready to take the next step with Harold J Miossi Charitable Trust?
Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2025 | $4,594,401 | $872,822 | $2,842,259 | $2,682,108 | 25 | $2,741,315 | $771,878 | $253,010 |
| 2024 | $6,563,838 | $739,989 | $1,959,278 | $1,769,912 | 20 | $1,833,655 | $614,366 | $356,649 |
| 2023 | $7,783,127 | $1,125,902 | $1,438,317 | $1,233,471 | 23 | $1,296,365 | $983,950 | $360,812 |
| 2022 | $8,095,542 | $583,120 | $2,595,973 | $2,369,234 | 17 | $2,436,391 | $423,538 | $461,271 |
| 2021 | $10,108,395 | $1,177,107 | $964,156 | $770,069 | 19 | $832,493 | $1,045,444 | $450,466 |
| 2020 | $9,895,444 | $1,218,370 | $1,658,931 | $1,474,456 | 21 | — | $652,197 | $469,071 |
| 2019 | $10,336,005 | $1,761,738 | $2,477,669 | $2,291,895 | 25 | — | $637,053 | $473,095 |
Under IRS private-foundation payout rules, Harold J Miossi Charitable Trust reported a distributable amount of $253K for 2025 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The Trust’s stated mission is to assist organizations seeking to improve quality of life for residents of the City and surrounding area of San Luis Obispo. Its guidelines describe support for animal protection and rights, education—including college readiness and access—environmental protection, programs and improvements for staff and parishioners of Mission San Luis Obispo and other historic missions in the county, public art and nonprofit arts projects, and youth development. It has a particular interest in dog protection and rights. Support is generally for program or project expenses; one-time capital improvements may be considered. General operating support is generally not considered, and the Trust does not support individuals or endowment campaigns. Children’s camp requests are not considered unless the organization has been specifically invited to apply.
Its 2025 grants illustrate support for arts, conservation, wildlife care, education, and youth-serving programs. Central Coast Salmon Enhancement describes its work as restoring and conserving coastal watershed and marine ecosystems and delivering conservation science education. Pacific Wildlife Care says it supports San Luis Obispo County wildlife through rehabilitation and educational outreach. Central Coast Aquarium describes itself as a marine science education center and community resource serving visitors and county residents.
Grantmaking
In filing year 2025, the Trust reported 25 grants totaling $2,682,108. Grant amounts ranged from $2,500 to $1,600,000, with a median of $17,000. The largest awards included $1,600,000 to SLO Museum of Arts for a capital campaign and financial management, $310,355 to SLO Botanical Garden to reconstruct a parking lot, $137,200 to San Luis Coastal Education for a paddle-raising program, and $120,700 to Central Coast Salmon Enhancement for education and restoration work. Other notable awards were $100,000 each to Pacific Wildlife Care for the Ridenour Center and The Land Conservancy of SLO for Torro Preserve Phase II, and $75,000 to Community Counseling Center of SLO for therapy programs.
The Trust’s 2025 filing lists an application package that includes a grant application, organization summary, description of the specific request, monitoring and evaluation information, organizational and project budgets, other funding sources, a board-member list, tax-status letter, and financial statements. The filing states that awards are restricted to California-based charitable organizations for projects benefiting San Luis Obispo County residents. The website says applications are available beginning January 1 and proposals are preferred by email.
Leadership & Key People
Leadership team and compensation from IRS filings
Howard Carroll is listed as trustee on the 2025 filing and is named as trustee in the Trust’s application materials.
Harold J Miossi Charitable Trust is led by Howard Caroll, Trustee on every filing since 2019 — the only officer listed, and compensated.
Officers on the 2025 filing
Howard Caroll
Trustee
On filings since 2019
20 hrs/week
$70K (2019) → $80K (2025)
Data from IRS Form 990 filings, 2019–2025. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $80K, to Howard Caroll (Trustee).
Frequently asked questions about Harold J Miossi Charitable Trust
How much does Harold J Miossi Charitable Trust give each year?
Harold J Miossi Charitable Trust gave $2.7M across 25 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $1.8M across 20 grants.
What is Harold J Miossi Charitable Trust's typical grant size?
Harold J Miossi Charitable Trust's median grant in 2025 was $17,000, and its average grant was $107,284, across 25 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Harold J Miossi Charitable Trust that year got $70K on average.
Where does Harold J Miossi Charitable Trust give grants?
Harold J Miossi Charitable Trust gives mostly in California: 100% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were San Luis Obispo, CA (15 grants), Morro Bay, CA (2 grants), Arroyo Grande, CA (2 grants) and Avila Beach, CA (2 grants).
Does Harold J Miossi Charitable Trust give general operating support?
Not in 2025: none of the 25 grants with a stated purpose on Harold J Miossi Charitable Trust's 2025 IRS Form 990-PF were described as general or operating support.
Who are Harold J Miossi Charitable Trust's largest grantees?
Harold J Miossi Charitable Trust's largest 2025 grantees include SLO Museum of Arts ($1,600,000), SLO Botanical Garden ($310,355) and San Luis Coastal Education ($137,200), according to its 2025 IRS Form 990-PF. Together they received 76% of its itemized 2025 grant dollars.
How large is Harold J Miossi Charitable Trust?
Harold J Miossi Charitable Trust reported $4.6M in total assets on its 2025 IRS Form 990-PF. It paid out $2.7M in qualifying distributions that year, against a required minimum of $253K (roughly 5% of its investment assets).
What does Harold J Miossi Charitable Trust fund?
The Trust’s stated mission is to assist organizations seeking to improve quality of life for residents of the City and surrounding area of San Luis Obispo. See mission & focus areas ↑
How do I apply for a grant from Harold J Miossi Charitable Trust?
Submit the application package and materials described above. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Harold J Miossi Charitable Trust's EIN?
Harold J Miossi Charitable Trust's EIN (Employer Identification Number) is 26-4703396. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2019 (received by the IRS August 13, 2020)
- Added Form 990-PF for fiscal year 2025 (received by the IRS August 7, 2026)
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
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Cite this profile
Grantable. (2026). Harold J Miossi Charitable Trust funder profile. GrantGraph. Retrieved October 13, 2026, from https://grantable.co/funders/harold-j-miossi-charitable-trust-morg_ff2ecf6333364deda058e331b86bab79
BibTeX
@misc{grantable_264703396_2026,
author = {{Grantable}},
title = {{Harold J Miossi Charitable Trust funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/harold-j-miossi-charitable-trust-morg_ff2ecf6333364deda058e331b86bab79},
note = {Accessed 2026-10-13. 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 Harold J Miossi Charitable Trust'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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