Porter E & Helenmae Thompson Foundation
The Porter E & Helenmae Thompson Foundation is a private foundation based in Lafayette, California. Its 2023 filing is marked as a final return, indicating that the foundation appears to have wound down or stopped grantmaking.
Porter E & Helenmae Thompson Foundation at a glance
In short: Porter E & Helenmae Thompson Foundation gave $75K across 1 grant in 2023 (avg $75K), mostly in Missouri. Source: 2023 IRS Form 990-PF.
- Annual giving (2023)
- $75,292
- -98.2% vs 2022
- Grants made (2023)
- 1
- +0.0% vs 2022
- Average grant
- $75,292
- -98.2% vs 2022
- Median grant
- $75,292
- Primary geography
- Missouri (100% of itemized 2023 grant dollars)
- Latest 990 filing
- Form 990-PF, 2023 View filing
Data from IRS Form 990-PF, 2023; updated October 2026.
How to apply to Porter E & Helenmae Thompson Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation stated that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. This is not a current application opportunity; the 2023 filing is marked as final.
- Contact
Mailing address: PO Box 417, Lafayette, CA 94549
Phone: (925) 324-4488
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Porter E & Helenmae Thompson Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2023
The largest 2023 recipient was Greater Horizons ($75K).
Grant Size Distribution
43 grants across all recorded years
The most common grant size was under $50K: 41 grants of 43 (95%).
Geographic Focus
Where this funder awards grants
All reported 2023 grant dollars went to a recipient in Missouri.
Grant Distribution by State
Share of the 2023 grant dollars on its one itemized grant.
Cities
How Porter E & Helenmae Thompson Foundation gives
- Giving fell 63% from 2020 to 2023. Method
- In 2023 it paid out well above 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 2023, annual grant giving ranged from $75K (2023) to $4.1M (2022). In 2023 it made 1 grant totaling $75K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Greater Horizons Kansas City, MO | General Purpose | $75,292 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2023 | — | $7 | $100,678 | $75,292 | 1 | $75,292 | — | $3,208 |
| 2022 | $100,671 | $148,788 | $4,153,552 | $4,138,364 | 1 | $4,138,364 | $134,827 | $178,387 |
| 2021 | $2,398,748 | $196,170 | $253,859 | $237,000 | 20 | $237,000 | $186,204 | $201,997 |
| 2020 | $2,456,437 | $155,333 | $230,175 | $206,000 | 21 | — | $142,743 | $173,843 |
Under IRS private-foundation payout rules, Porter E & Helenmae Thompson Foundation reported a distributable amount of $3K for 2023 — 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 available grant record shows support for Greater Horizons. Greater Horizons describes itself as a provider of charitable giving services for philanthropists, families, and companies, powered by the Greater Kansas City Community Foundation.
Grantmaking
In 2023, the foundation reported one grant totaling $75,292. Its sole listed grant was $75,292 to Greater Horizons for general purpose.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2023 filing lists Barbara J Cadle as president, Carolyn Cadle as treasurer, and Suzanne Cadle Glaubitz as secretary.
Porter E & Helenmae Thompson Foundation is led by Barbara J. Cadle, President on every filing since 2020; none of the 3 officers listed in 2023 report compensation.
Officers on the 2023 filing
Barbara J. Cadle
President
On filings since 2020
0.4 hrs/week
No compensation reported
Carolyn Cadle
Treasurer
On filings since 2020
0.1 hrs/week
No compensation reported
Suzanne Cadle Glaubitz
Secretary
On filings since 2020
0.1 hrs/week
No compensation reported
Data from IRS Form 990 filings, 2020–2023. "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 Porter E & Helenmae Thompson Foundation
How much does Porter E & Helenmae Thompson Foundation give each year?
Porter E & Helenmae Thompson Foundation gave $75K across 1 grant in 2023, according to its 2023 IRS Form 990-PF. In 2022 it gave $4.1M across 1 grant.
What does Porter E & Helenmae Thompson Foundation fund?
The available grant record shows support for Greater Horizons. Greater Horizons describes itself as a provider of charitable giving services for philanthropists, families, and companies, powered by the Greater Kansas City Community Foundation. See mission & focus areas ↑
How do I apply for a grant from Porter E & Helenmae Thompson Foundation?
The foundation stated that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
Where does Porter E & Helenmae Thompson Foundation make grants?
All reported 2023 grant dollars went to a recipient in Missouri.
How much is Porter E & Helenmae Thompson Foundation required to give away each year?
Private foundations must generally distribute about 5% of their assets annually. For 2023, Porter E & Helenmae Thompson Foundation reported a distributable amount of $3K on its IRS Form 990-PF — the minimum it must pay out in qualifying distributions.
What is Porter E & Helenmae Thompson Foundation's EIN?
Porter E & Helenmae Thompson Foundation's EIN (Employer Identification Number) is 94-2831112. IRS Form 990 filing data is available on this page for 2020–2023.
Does Porter E & Helenmae Thompson Foundation accept unsolicited proposals?
No, according to Grantable's research on the foundation's published guidelines. See how to apply ↑
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2023
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The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from Porter E & Helenmae Thompson 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.
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