Nathan & Marlene Addlestone Foundation Inc
Nathan & Marlene Addlestone Foundation Inc is a private foundation based in Charleston, South Carolina, established in 1980. The foundation operates as a 501(c)(3) organization and focuses on philanthropic giving primarily within South Carolina and select locations across the United States.
Key facts about Nathan & Marlene Addlestone Foundation Inc
- EIN
- 57-0697712
- Latest 990 filing
- Form 990-PF, 2025
- Annual giving (2025)
- $67,225
- Grants made (2025)
- 30
- Average grant
- $2,241
- Median grant
- $1,750
- New grantees (estimate)
- 13% first-time grantees (4 of 30, 2025)
- Primary geography
- South Carolina (80% of itemized 2025 grant dollars)
- How to apply
- The foundation maintains tight relationships with established partners. Full details ↓
Data from IRS Form 990-PF, 2025; updated September 2026. New grantees are estimated by matching recipient names across years (methodology). Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Nathan & Marlene Addlestone Foundation Inc funds
By grant dollars, the top recipient states for Nathan & Marlene Addlestone Foundation Inc's 30 itemized 2025 grants were South Carolina (80%) and Illinois (5%). The most frequent recipient cities were Charleston, SC (16 grants), North Charleston, SC (2 grants), N Charleston, SC (2 grants) and Johns Island, SC (2 grants). None of its 30 grants with a stated purpose were described as general or operating support. Recurring purposes include "Support of Community" (12 grants), "Support of Education" (11 grants) and "Support for Education" (5 grants).
Is Nathan & Marlene Addlestone Foundation Inc open to new grantees?
13%
first-time grantees, 2025
In 2025, 4 of 30 grantees (13%) were first-time recipients. First grants averaged $2K; repeat grants $2K. How we count
Medians: $2K first-time, $2K repeat.
Estimate from itemized IRS Form 990-PF grant lists (2020–2025). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Next steps with Nathan & Marlene Addlestone Foundation Inc
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Financial Overview
From 2025 IRS Form 990-PF · View filing
Total Assets
—
Annual Giving
$67K
-4.0% YoY
Grant Count
30
+7.1% YoY
Avg Grant Size
$2K
-10.4% YoY
Mission & Focus Areas
The foundation's primary funding areas include:
- Education (K-12, higher education, and specialized educational programs)
- Jewish charitable organizations and community support
- Community development and social services
- Human services
Grantmaking
Grant Range
$1,500
Average Grant
amount: Varies by year
How to Apply
**
Ready to take the next step with Nathan & Marlene Addlestone Foundation Inc?
Geographic Focus
Where this funder awards grants
The foundation demonstrates strong geographic concentration in South Carolina, with 80% of all grants awarded within the state. Within South Carolina, funding concentrates in:
- Charleston: 66% of grants
- North Charleston: 8-10% of grants
- Other South Carolina locations: Remaining percentage
The foundation also makes grants in select locations outside South Carolina, including Connecticut, New York, Michigan, and Illinois.
Grant Distribution by State
Share of all 30 itemized 2025 grant dollars.
Cities
Financial History
Multi-year comparison from IRS filings
Most Recent Fiscal Year (2025):
- Total Assets: $1,292,801
- Total Revenue: $50,882
- Total Expenses: $84,328
- Net Income: -$33,446
- Charitable Disbursements: $67,225
Revenue Sources (2025):
- Dividends: $69,033
- Sales of Assets: -$18,151
- Contributions Received: $0
- Interest Revenue: $0
Historical Assets (2024):
- Total Assets: $1,418,296
The foundation carries no liabilities and maintains a net asset position. Funding has declined approximately 12% over an eight-year period, suggesting reduced grant opportunities or shifting foundation priorities.
| Metric | 2025 | 2024 | 2023 |
|---|---|---|---|
| Total Assets | — | — | — |
| Revenue | — | — | — |
| Expenses | — | — | — |
| Qualifying Distributions | — | — | — |
| Net Investment Income | — | — | — |
| Distributable Amount | — | — | — |
Data update history
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 17, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 16, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 11, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 13, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS April 23, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 12, 2026)
- IRS filings on file for fiscal years 2020–2024
Giving Over Time
Total grant dollars and number of grants per year
Grant Insights
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2025
Grant Size Distribution
144 grants across all recorded years
Giving History
Grant recipients and amounts by year
Among its reported 2025 grants, the largest recipients include Jewish Endowment Foundation ($10,000), Trident Technical College ($6,500), Trident Literacy Association ($5,000).
| Recipient | Purpose | Amount |
|---|---|---|
| JEWISH ENDOWMENT FOUNDATION Charleston, SC | SUPPORT OF EDUCATION | $10,000 |
| TRIDENT TECHNICAL COLLEGE North Charleston, SC | SUPPORT OF EDUCATION | $6,500 |
| TRIDENT LITERACY ASSOCIATION N Charleston, SC | SUPPORT OF EDUCATION | $5,000 |
| AMERICAN LUNG ASSOCIATION Chicago, IL | SUPPORT OF COMMUNITY | $3,600 |
| TEMPLE ISRAEL WESTPORT Westport, CT | SUPPORT OF COMMUNITY | $3,125 |
| CHARLESTON JEWISH FEDERATION Charleston, SC | SUPPORT OF COMMUNITY | $2,500 |
| COLLEGE OF CHARLESTON NUOVO CINEMA Charleston, SC | SUPPORT OF EDUCATION | $2,500 |
| LOWCOUNTRY LOCAL FIRST Charleston, SC | SUPPORT OF EDUCATION | $2,500 |
| CHARLES WEBB CENTER Charleston, SC | SUPPORT FOR EDUCATION | $2,500 |
| KIDS ON POINT Charleston, SC | SUPPORT OF COMMUNITY | $2,500 |
Leadership & Key People
Leadership team and compensation from IRS filings
The foundation is governed by three unpaid board members serving as President, Vice President, and Secretary/Treasurer. No executive compensation is reported.
Compensation Overview
No officer or director reported compensation in the available filings.
From 2025 IRS filing
| Name | Title | Hours | Compensation |
|---|---|---|---|
| Marlene Addlestone Bursten | President | — | — |
| Susan Addlestone | Vice-President | — | — |
| Edward Kronsberg | Sec/Treas | 1 | — |
Subject Areas
Focus areas based on grantmaking activity
Frequently Asked Questions
What does Nathan & Marlene Addlestone Foundation Inc fund?
The foundation's primary funding areas include: • Education (K-12, higher education, and specialized educational programs) • Jewish charitable organizations and community support • Community development and social services • Human services
How do I apply for a grant from Nathan & Marlene Addlestone Foundation Inc?
The foundation maintains tight relationships with established partners. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
Where does Nathan & Marlene Addlestone Foundation Inc make grants?
The foundation demonstrates strong geographic concentration in South Carolina, with 80% of all grants awarded within the state. Within South Carolina, funding concentrates in: • Charleston: 66% of grants • North Charleston: 8-10% of grants • Other South Carolina locations: Remaining percentage The foundation also makes grants in select locations outside South Carolina, including Connecticut, New York, Michigan, and Illinois.
What size grants does Nathan & Marlene Addlestone Foundation Inc award?
In 2025, Nathan & Marlene Addlestone Foundation Inc awarded 30 grants totaling $67K — an average of about $2K per grant, based on its IRS Form 990 filings.
What is Nathan & Marlene Addlestone Foundation Inc's EIN?
Nathan & Marlene Addlestone Foundation Inc's EIN (Employer Identification Number) is 57-0697712. IRS Form 990 filing data is available on this page for 2020–2025.
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Data last updated September 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.