Riester Conservation Foundation
Riester Conservation Foundation is a private foundation focused on Environment & Animals, based in Phoenix, AZ. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $27K in total assets. In 2024, it awarded 6 grants totaling $26K. Net investment income was $921.
Riester Conservation Foundation at a glance
In short: Riester Conservation Foundation gave $26K across 6 grants in 2024 (avg $4K), top state California. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $25,850
- +16.1% vs 2023
- Grants made (2024)
- 6
- +20.0% vs 2023
- Average grant
- $4,308
- -3.3% vs 2023
- Median grant
- $2,500
- Total assets
- $26,731
- +50.1% vs 2023
- Primary geography
- California (32% 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 Riester Conservation Foundation funds
How this funder distributes its grants
Top Recipients
Top 6 recipients in 2024
The largest 2024 recipient was Asociacion Crema ($13K). Together the top 6 received $26K.
Grant Size Distribution
26 grants across all recorded years
The most common grant size was under $50K: 26 grants of 26 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2024 grant dollars across all 6 itemized grants.
Cities
How Riester Conservation Foundation gives
- Giving grew 135% from 2021 to 2024. Method
- In 2024 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 2024, annual grant giving ranged from $11K (2021) to $27K (2020). In 2024 it made 6 grants totaling $26K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Asociacion Crema | Charitable | $13,450 |
| David Sheldrick Wildlife Trust Laguna Hills, CA | Charitable | $5,000 |
| Big Life Foundation Arlington, VA | Charitable | $3,000 |
| Sierra Club Foundation Oakland, CA | Charitable | $2,000 |
| Amigos De Chocola Los Angeles, CA | Charitable | $1,400 |
| ADI Corozalito | Charitable | $1,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $26,731 | $36,360 | $27,429 | $25,850 | 6 | $27,429 | $921 | $1,300 |
| 2023 | $17,804 | $30,840 | $23,680 | $22,270 | 5 | $23,680 | $271 | $977 |
| 2022 | $10,644 | $4,419 | $27,450 | $22,600 | 5 | $27,450 | $19 | $636 |
| 2021 | $33,675 | $38,208 | $16,260 | $11,000 | 4 | $16,260 | $17 | $1,502 |
| 2020 | $11,727 | $30,958 | $32,090 | $26,900 | 6 | — | $13 | $557 |
Under IRS private-foundation payout rules, Riester Conservation Foundation reported a distributable amount of $1K for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Riester Conservation Foundation is led by Gary Kaasa, President on every filing since 2020; none of the 7 officers listed in 2024 report compensation.
Officers on the 2024 filing
Gary Kaasa
President
On filings since 2020
No compensation reported
Mirja Riester
Chair
On filings since 2020
No compensation reported
Alan Perkel
Director
On filings since 2020
No compensation reported
John Lindsay
Director
On filings since 2020
No compensation reported
Michael Hopkins
Director
On filings since 2020
No compensation reported
Tim Riester
Director
On filings since 2020
No compensation reported
Tom Ortega
Treasurer
On filings since 2020
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 Riester Conservation Foundation
How much does Riester Conservation Foundation give each year?
Riester Conservation Foundation gave $26K across 6 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $22K across 5 grants.
What is Riester Conservation Foundation's typical grant size?
Riester Conservation Foundation's median grant in 2024 was $2,500, and its average grant was $4,308, across 6 grants on its 2024 IRS Form 990-PF.
Where does Riester Conservation Foundation give grants?
Riester Conservation Foundation's top state is California, with 32% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest state was Virginia (12%).
Does Riester Conservation Foundation give general operating support?
Not in 2024: none of the 6 grants with a stated purpose on Riester Conservation Foundation's 2024 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Charitable" (6 grants).
Who are Riester Conservation Foundation's largest grantees?
Riester Conservation Foundation's largest 2024 grantees include Asociacion Crema ($13,450), David Sheldrick Wildlife Trust ($5,000) and Big Life Foundation ($3,000), according to its 2024 IRS Form 990-PF. Together they received 83% of its itemized 2024 grant dollars.
How large is Riester Conservation Foundation?
Riester Conservation Foundation reported $27K in total assets on its 2024 IRS Form 990-PF. It paid out $27K in qualifying distributions that year, against a required minimum of $1K (roughly 5% of its investment assets).
What is Riester Conservation Foundation?
Riester Conservation Foundation is a private foundation focused on Environment & Animals, based in Phoenix, AZ. It holds $27K in total assets as of 2024.
What is Riester Conservation Foundation's EIN?
Riester Conservation Foundation's EIN (Employer Identification Number) is 86-1033524. 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
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