Aristo Zeilstra Foundation
The Aristo Zeilstra Foundation is a private foundation based in Wilmington, Delaware. In its 2025 filing, it reported giving grants to charitable organizations, with the largest share of grant dollars going to recipients in South Carolina.
Aristo Zeilstra Foundation at a glance
In short: Aristo Zeilstra Foundation gave $47K across 10 grants in 2025 (avg $5K), mostly in South Carolina. 50% of 2025 grantees were new. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $47,100
- +3.5% vs 2024
- Grants made (2025)
- 10
- +0.0% vs 2024
- Average grant
- $4,710
- +3.5% vs 2024
- Median grant
- $1,000
- Total assets
- $242,972
- -16.2% vs 2024
- New grantees (estimate)
- 50% first-time grantees (5 of 10, 2025; small sample)
- Primary geography
- South Carolina (85% 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 Aristo Zeilstra Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation states that it makes contributions only to preselected charitable organizations and does not accept unsolicited requests for funds.
- Contact
Mailing address: Foundation Source 501 Silverside Rd, Wilmington, DE 19809-1377
Phone: (800) 839-1754
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Aristo Zeilstra Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
The largest 2025 recipient was The Medical University of South Carolina Foundatio ($35K). Together the top 10 received $47K.
Grant Size Distribution
68 grants across all recorded years
The most common grant size was under $50K: 68 grants of 68 (100%).
Geographic Focus
Where this funder awards grants
In 2025, 85% of grant dollars went to recipients in South Carolina. Other listed recipient-state shares were Ohio, Florida, and Washington at 3% each, and Virginia at 2%. The itemized grants also included recipients in Missouri and Kentucky.
Grant Distribution by State
Share of 2025 grant dollars across all 10 itemized grants.
States
Cities
Is Aristo Zeilstra Foundation open to new grantees?
50%
first-time grantees, 2025
In 2025, 5 of 10 grantees (50%) were first-time recipients. With only 10 grantees, that is a small sample: one grantee more or less moves the share by about 10 points. First grants averaged $720; repeat grants $9K. How we count
Medians: $1K first-time, $2K repeat.
- 40% of 2025 grantees were also funded in 2024. Method
- Giving held roughly steady from 2022 to 2025 (+1%). Method
- In 2025 it paid out 343% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2020–2025). 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 2020 to 2025, annual grant giving ranged from $5K (2021) to $48K (2023). In 2025 it made 10 grants totaling $47K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The Medical University of South Carolina Foundatio Charleston, SC | Scleroderma Center Endowment Fund | $35,000 |
| Citadel Foundation Charleston, SC | Cody Lee Green '22 Memorial Scholarship Fund | $5,000 |
| Friends of Baark Inc Ft Lauderdale, FL | General & Unrestricted | $1,500 |
| World Vision Federal Way, WA | Sponsor a Child Program | $1,500 |
| No One Left Behind Inc Arlington, VA | General & Unrestricted | $1,000 |
| University of Cincinnati Foundation Cincinnati, OH | Ohio Innocence Project | $1,000 |
| Veterans Community Project Kansas City, MO | General & Unrestricted | $1,000 |
| Foreverland Farm Amelia, OH | General & Unrestricted | $500 |
| Kentucky Humane Society Louisville, KY | Equine Care and General & Unrestricted | $500 |
| Center for Holocaust and Humanityeducation Cincinnati, OH | General & Unrestricted | $100 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $242,972 | $8,269 | $55,233 | $47,100 | 10 | $55,058 | $8,094 | $16,052 |
| 2024 | $289,936 | $8,322 | $53,478 | $45,500 | 10 | $53,303 | $7,536 | $18,840 |
| 2023 | $335,092 | $-21,067 | $56,151 | $48,454 | 19 | $56,104 | — | $20,097 |
| 2022 | $412,310 | $157,696 | $53,954 | $46,750 | 12 | $53,854 | — | $23,879 |
| 2021 | $308,568 | $31,198 | $10,458 | $5,394 | 17 | $10,378 | — | $18,092 |
| 2020 | $287,828 | $4,395 | $13,182 | $8,308 | 26 | — | $4,370 | $15,106 |
Under IRS private-foundation payout rules, Aristo Zeilstra Foundation reported a distributable amount of $16K 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
No mission statement for the foundation is provided. Its 2025 grants went to organizations working in areas including medical research, scholarships, animal welfare, humanitarian aid, veterans’ services, and Holocaust education. For example, Friends of BAARK describes its work as reducing animal homelessness and suffering; Veterans Community Project describes its work as addressing veteran homelessness through services and transitional housing; and No One Left Behind describes helping eligible Afghan and Iraqi wartime allies navigate visa applications and resettle in the United States. These are the grantees’ descriptions of their own missions.
Grantmaking
In filing year 2025, the foundation reported 10 grants totaling $47,100. Grant amounts ranged from $100 to $35,000, with a median of $1,000. The largest award was $35,000 to the Medical University of South Carolina Foundation for its Scleroderma Center Endowment Fund. Other notable grants included $5,000 to the Citadel Foundation for the Cody Lee Green ’22 Memorial Scholarship Fund, and $1,500 each to Friends of BAARK and World Vision.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists Justin Zeilstra as treasurer and director; Mirja Zeilstra as director and vice president; Natasha Zeilstra as director; Raimond Zeilstra as director, president, and secretary; and Sophia Zeilstra as director.
Aristo Zeilstra Foundation is led by Raimond Zeilstra, Director, President & Secretary on every filing since 2020; none of the 5 officers listed in 2025 report compensation.
Officers on the 2025 filing
Raimond Zeilstra
Director, President & Secretary
On filings since 2020
1 hr/week
No compensation reported
Justin Zeilstra
Treasurer & Director
Treasurer → Treasurer & Director, 2021
On filings since 2020
1 hr/week
No compensation reported
Mirja Zeilstra
Director & Vice President
On filings since 2020
1 hr/week
No compensation reported
Sophia Zeilstra
Director
On filings since 2020
1 hr/week
No compensation reported
Natasha Zeilstra
Director
On filings since 2022
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2020–2025. "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 Aristo Zeilstra Foundation
How much does Aristo Zeilstra Foundation give each year?
Aristo Zeilstra Foundation gave $47K across 10 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $46K across 10 grants.
What is Aristo Zeilstra Foundation's typical grant size?
Aristo Zeilstra Foundation's median grant in 2025 was $1,000, and its average grant was $4,710, across 10 grants on its 2025 IRS Form 990-PF. Organizations receiving their first grant from Aristo Zeilstra Foundation that year got $720 on average.
Where does Aristo Zeilstra Foundation give grants?
Aristo Zeilstra Foundation gives mostly in South Carolina: 85% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Charleston, SC (2 grants) and Cincinnati, OH (2 grants).
Does Aristo Zeilstra Foundation give general operating support?
Yes: 60% of Aristo Zeilstra Foundation's 2025 grants with a stated purpose (6 of 10) were for general or operating support, per its 2025 IRS Form 990-PF.
Who are Aristo Zeilstra Foundation's largest grantees?
Aristo Zeilstra Foundation's largest 2025 grantees include The Medical University of South Carolina Foundatio ($35,000), Citadel Foundation ($5,000) and Friends of Baark Inc ($1,500), according to its 2025 IRS Form 990-PF. Together they received 88% of its itemized 2025 grant dollars.
How large is Aristo Zeilstra Foundation?
Aristo Zeilstra Foundation reported $243K in total assets on its 2025 IRS Form 990-PF. It paid out $55K in qualifying distributions that year, against a required minimum of $16K (roughly 5% of its investment assets).
What does Aristo Zeilstra Foundation fund?
No mission statement for the foundation is provided. Its 2025 grants went to organizations working in areas including medical research, scholarships, animal welfare, humanitarian aid, veterans’ services, and Holocaust education. See mission & focus areas ↑
How do I apply for a grant from Aristo Zeilstra Foundation?
The foundation states 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 ↑
What is Aristo Zeilstra Foundation's EIN?
Aristo Zeilstra Foundation's EIN (Employer Identification Number) is 84-2947815. IRS Form 990 filing data is available on this page for 2020–2025.
Does Aristo Zeilstra 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
(6)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS March 22, 2022)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS September 28, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS October 31, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS November 5, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS October 9, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 13, 2026)
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