Sunstone Foundation
Sunstone Foundation is a private foundation based in Wilmington, Delaware. Its 2024 filing reports 102 grants totaling $945,904 to charitable organizations, including organizations working in literacy, youth services, and other areas.
Sunstone Foundation at a glance
In short: Sunstone Foundation gave $946K across 102 grants in 2024 (avg $9K), top state Pennsylvania. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $945,904
- +22.0% vs 2023
- Grants made (2024)
- 102
- +3.0% vs 2023
- Average grant
- $9,274
- +18.4% vs 2023
- Median grant
- $3,702
- Total assets
- $473,620
- -15.4% vs 2023
- Primary geography
- Pennsylvania (25% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
How to apply to Sunstone Foundation
- Accepts unsolicited proposals
- No
- How to Apply
-
The foundation 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 Sunstone Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was The Education Partnership ($174K). Together the top 10 received $522K.
Grant Size Distribution
215 grants across all recorded years
The most common grant size was under $50K: 212 grants of 215 (99%).
Geographic Focus
Where this funder awards grants
The foundation’s 2024 grant dollars went to recipients in multiple states. The largest reported shares were Pennsylvania (25%), North Carolina (17%), New York (9%), Washington (7%), and Tennessee (6%).
Grant Distribution by State
Share of 2024 grant dollars across all 102 itemized grants.
States
Cities
How Sunstone Foundation gives
- 59% of 2024 grantees were also funded in 2023. Method
- In 2024 it paid out well above its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2024). 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 2022 to 2024, annual grant giving ranged from $37K (2022) to $946K (2024). In 2024 it made 102 grants totaling $946K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The Education Partnership Pittsburgh, PA | General & Unrestricted | $173,759 |
| Book Fairies Inc Freeport, NY | General & Unrestricted | $77,185 |
| Governors Early Literacy Foundation Nashville, TN | General & Unrestricted | $55,000 |
| Reading Is Fundamental Pittsburg Pittsburgh, PA | General & Unrestricted | $35,000 |
| Treehouse Seattle, WA | General & Unrestricted | $35,000 |
| Lambert House Seattle, WA | General & Unrestricted | $29,612 |
| Band Together Raleigh, NC | General & Unrestricted | $25,000 |
| Everyones Dream Come True Austin, TX | Dream Achiever Wrap-Around Program | $25,000 |
| North Carolina Business Leaders for Education Cary, NC | General & Unrestricted | $25,000 |
| Promising Pages Charlotte, NC | General & Unrestricted | $25,000 |
Ready to take the next step with Sunstone Foundation?
Financial History
Multi-year comparison from IRS filings
The foundation reported that its 2024 distributions came from sources other than current income and resulted in a substantial contraction of assets. It stated that it had no plans for dissolution.
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Qualifying Distributions | Net Investment Income | Distributable Amount |
|---|---|---|---|---|---|---|---|---|
| 2024 | $473,620 | $1,187,854 | $1,237,252 | $945,904 | 102 | $1,197,846 | $386,458 | $20,380 |
| 2023 | $559,926 | $530,373 | $1,154,611 | $775,480 | 99 | $1,114,591 | $476,950 | $26,272 |
| 2022 | $1,160,690 | $1,264,389 | $118,763 | $36,644 | 14 | $100,785 | $235,993 | $8,193 |
Under IRS private-foundation payout rules, Sunstone Foundation reported a distributable amount of $20K for 2024 — 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 is available for this foundation in the provided information. Its 2024 grants included support for organizations with varied missions. For example, Book Fairies says it redistributes books to under-resourced communities, while Treehouse describes its work as supporting children who have experienced foster care. Lambert House says it empowers LGBTQ youth through leadership, social, and life skills development.
Grantmaking
In 2024, the foundation reported 102 grants totaling $945,904. Grants ranged from $25 to $173,759, with a median grant of $3,702. Many of the largest listed grants were designated “General & Unrestricted.”
Notable 2024 grants included $173,759 to The Education Partnership in Pittsburgh, Pennsylvania; $77,185 to Book Fairies Inc; $55,000 to Governor’s Early Literacy Foundation; $35,000 each to Reading Is Fundamental Pittsburg and Treehouse; and $29,612 to Lambert House. Other listed recipients received $25,000 each, including Band Together, Reading Quest, and Promising Pages.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists James Triandiflou as director and president, and Jody Foster, Lynn Franey, Amy Triandiflou, Annagrace Triandiflou, and Daniel Triandiflou as directors.
Sunstone Foundation is led by James Triandiflou, Director & President on every filing since 2022; 1 of 6 officers listed in 2024 is compensated.
Officers on the 2024 filing
James Triandiflou
Director & President
On filings since 2022
1 hr/week
No compensation reported
Annagrace Triandiflou
Director
On filings since 2022
1 hr/week
$15K (2022) → $13K (2024)
Amy Triandiflou
Director
On filings since 2022
1 hr/week
No compensation reported
Daniel Triandiflou
Director
On filings since 2022
1 hr/week
No compensation reported
Jody Foster
Director
On filings since 2022
1 hr/week
No compensation reported
Lynn Franey
Director
On filings since 2022
1 hr/week
No compensation reported
Data from IRS Form 990 filings, 2022–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $13K, to Annagrace Triandiflou (Dir).
Frequently asked questions about Sunstone Foundation
How much does Sunstone Foundation give each year?
Sunstone Foundation gave $946K across 102 grants in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $775K across 99 grants.
What is Sunstone Foundation's typical grant size?
Sunstone Foundation's median grant in 2024 was $3,702, and its average grant was $9,274, across 102 grants on its 2024 IRS Form 990-PF.
Where does Sunstone Foundation give grants?
Sunstone Foundation's top state is Pennsylvania, with 25% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were North Carolina (17%) and New York (9%). The most frequent recipient cities were Charlotte, NC (8 grants), Colorado SPGS, CO (6 grants), Pittsburgh, PA (5 grants) and Atlanta, GA (4 grants).
Does Sunstone Foundation give general operating support?
Yes: 98% of Sunstone Foundation's 2024 grants with a stated purpose (100 of 102) were for general or operating support, per its 2024 IRS Form 990-PF.
Who are Sunstone Foundation's largest grantees?
Sunstone Foundation's largest 2024 grantees include The Education Partnership ($173,759), Book Fairies Inc ($80,799 across 2 grants) and Governors Early Literacy Foundation ($55,000), according to its 2024 IRS Form 990-PF. Together they received 33% of its itemized 2024 grant dollars.
How large is Sunstone Foundation?
Sunstone Foundation reported $474K in total assets on its 2024 IRS Form 990-PF. It paid out $1.2M in qualifying distributions that year, against a required minimum of $20K (roughly 5% of its investment assets).
What does Sunstone Foundation fund?
No mission statement is available for this foundation in the provided information. Its 2024 grants included support for organizations with varied missions. See mission & focus areas ↑
How do I apply for a grant from Sunstone Foundation?
The foundation 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 Sunstone Foundation's EIN?
Sunstone Foundation's EIN (Employer Identification Number) is 88-1593190. IRS Form 990 filing data is available on this page for 2022–2024.
Does Sunstone 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 2022–2024
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Cite this profile
Grantable. (2026). Sunstone Foundation funder profile. GrantGraph. Retrieved October 10, 2026, from https://grantable.co/funders/sunstone-foundation-morg_ac41dfd8d2be49d491a39365cce2149d
BibTeX
@misc{grantable_881593190_2026,
author = {{Grantable}},
title = {{Sunstone Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/sunstone-foundation-morg_ac41dfd8d2be49d491a39365cce2149d},
note = {Accessed 2026-10-10. 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 Sunstone 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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