Cornerstone Security Foundation
Cornerstone Security Foundation is a private foundation, based in Reston, VA. IRS filing data is available from 2020 through 2025. As of 2025, the organization holds $2.2M in total assets. In 2025, it awarded 7 grants totaling $164K. Net investment income was $151K.
Cornerstone Security Foundation at a glance
In short: Cornerstone Security Foundation gave $164K across 7 grants in 2025 (avg $23K), mostly in Virginia. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $164,250
- -30.1% vs 2024
- Grants made (2025)
- 7
- -30.0% vs 2024
- Average grant
- $23,464
- -0.2% vs 2024
- Median grant
- $11,000
- Total assets
- $2,192,389
- +5.8% vs 2024
- Primary geography
- Virginia (94% of itemized 2025 grant dollars)
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated September 2026.
Who Cornerstone Security Foundation funds
How this funder distributes its grants
Top Recipients
Top 7 recipients in 2025
The largest 2025 recipient was The Falls Church Anglican ($82K). Together the top 7 received $164K.
Grant Size Distribution
31 grants across all recorded years
The most common grant size was under $50K: 26 grants of 31 (84%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 7 itemized grants.
Cities
How Cornerstone Security Foundation gives
- Giving held roughly steady from 2022 to 2025 (+7%). Method
- In 2025 it paid out 154% of 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 2025, annual grant giving ranged from $154K (2022) to $749K (2020). In 2025 it made 7 grants totaling $164K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The Falls Church Anglican Falls Church, VA | Charitable | $82,250 |
| Five Talents USA Falls Church, VA | Charitable | $36,000 |
| Daniel Boone Baptist Church Gate City, VA | Charitable | $15,000 |
| Five Talents International Vienna, VA | Charitable | $11,000 |
| Oasis Life Network Falls Church, VA | Charitable | $10,000 |
| Csehy Summer School of Music Fountainville, PA | Charitable | $5,000 |
| Old Faithful Christian Idaho Falls, ID | Charitable | $5,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2025 | $2,192,389 | $274,040 | $168,096 | $164,250 | 7 | $164,458 | $151,411 | $106,535 |
| 2024 | $2,072,462 | $145,993 | $241,358 | $235,000 | 10 | $239,389 | $102,024 | $103,974 |
| 2023 | $2,168,520 | $286,999 | $166,687 | $160,000 | 6 | $164,573 | $61,736 | $99,518 |
| 2022 | $2,048,081 | $197,088 | $160,870 | $153,750 | 4 | $158,011 | $35,289 | $95,860 |
| 2021 | $2,012,312 | $155,231 | $188,936 | $181,511 | 4 | $185,787 | $97,446 | $106,561 |
| 2020 | $2,046,053 | $1,002,427 | $755,759 | $749,000 | 5 | — | $81,518 | $121,239 |
Under IRS private-foundation payout rules, Cornerstone Security Foundation reported a distributable amount of $107K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Cornerstone Security Foundation is led by Charles T. Quillin Jr., President on every filing since 2020 — the only officer listed, and uncompensated.
Officers on the 2025 filing
Charles T. Quillin Jr.
President
On filings since 2020
5 hrs/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 Cornerstone Security Foundation
How much does Cornerstone Security Foundation give each year?
Cornerstone Security Foundation gave $164K across 7 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $235K across 10 grants.
What is Cornerstone Security Foundation's typical grant size?
Cornerstone Security Foundation's median grant in 2025 was $11,000, and its average grant was $23,464, across 7 grants on its 2025 IRS Form 990-PF.
Where does Cornerstone Security Foundation give grants?
Cornerstone Security Foundation gives mostly in Virginia: 94% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The most frequent recipient cities were Falls Church, VA (3 grants).
Does Cornerstone Security Foundation give general operating support?
Not in 2025: none of the 7 grants with a stated purpose on Cornerstone Security Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Charitable" (7 grants).
Who are Cornerstone Security Foundation's largest grantees?
Cornerstone Security Foundation's largest 2025 grantees include The Falls Church Anglican ($82,250), Five Talents USA ($36,000) and Daniel Boone Baptist Church ($15,000), according to its 2025 IRS Form 990-PF. Together they received 81% of its itemized 2025 grant dollars.
How large is Cornerstone Security Foundation?
Cornerstone Security Foundation reported $2.2M in total assets on its 2025 IRS Form 990-PF. It paid out $164K in qualifying distributions that year, against a required minimum of $107K (roughly 5% of its investment assets).
What is Cornerstone Security Foundation's EIN?
Cornerstone Security Foundation's EIN (Employer Identification Number) is 27-1509055. IRS Form 990 filing data is available on this page for 2020–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(2)
When this profile's IRS filing data changed on Grantable
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 15, 2026)
- IRS filings on file for fiscal years 2020–2024
Live grants for the work Cornerstone Security Foundation funds
Philanthropy, Voluntarism & Grantmaking Open opportunities, soonest deadline first.
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Browse active grant opportunities in Cornerstone Security Foundation's focus areas in our free grants database
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