The Virginia State Capitol

Form 990-PFTax year 2025EIN 27-1509055

Cornerstone Security Foundation

A private foundation in Reston, VA. Its return for tax year 2025 lists 7 grants and $164,250 paid in grants.

Tax year 2025 (period ending Dec 31, 2025), read from the IRS e-file on Nov 11, 2026. Returns reach the IRS 5 to 18 months after the year they describe.

How to apply

Preselected only

The return checks the box saying the foundation gives only to preselected organizations and does not accept unsolicited requests.

Assets and giving by year

8 returns on file
Grants paid by tax year. The latest year is in blue.
  • Tax year 2025

    $164,250

    Grants listed
    7
    Assets, end of year
    $2,192,389
  • Tax year 2024

    $235,000

    Grants listed
    10
    Assets, end of year
    $2,072,462
  • Tax year 2023

    $160,000

    Grants listed
    6
    Assets, end of year
    $2,168,520
  • Tax year 2022

    $153,750

    Grants listed
    4
    Assets, end of year
    $2,048,081
  • Tax year 2021

    $181,511

    Grants listed
    4
    Assets, end of year
    $2,012,312
  • Tax year 2020

    $749,000

    Grants listed
    5
    Assets, end of year
    $2,046,053
  • Tax year 2019

    $492,400

    Grants listed
    5
    Assets, end of year
    $1,799,350
  • Tax year 2018

    $74,500

    Grants listed
    7
    Assets, end of year
    $2,055,286

Grants paid in 2025

7 grants, largest first

As listed on the return.

  1. The Falls Church AnglicanFalls Church, VA

    Charitable

    $82,250
  2. Five Talents USAFalls Church, VA

    Charitable

    $36,000
  3. Daniel Boone Baptist ChurchGate City, VA

    Charitable

    $15,000
  4. Five Talents InternationalVienna, VA

    Charitable

    $11,000
  5. Oasis Life NetworkFalls Church, VA

    Charitable

    $10,000
  6. Csehy Summer School of MusicFountainville, PA

    Charitable

    $5,000
  7. Old Faithful ChristianIdaho Falls, ID

    Charitable

    $5,000

Where the money goes

By cause: grants to organizations we matched to the IRS list of exempt organizations, by their category.

  1. International aid1 grant $11,00042% of the total
  2. Human services1 grant $10,00038% of the total
  3. Arts and culture1 grant $5,00019% of the total

By State

Grants to organizations with a US address, latest year.

  1. Virginia5 grants $154,250
  2. Idaho1 grant $5,000
  3. Pennsylvania1 grant $5,000

Officers, directors and trustees

1 person as filed

As filed on the return, with average hours per week and pay from the foundation.

  • Charles T Quillin JrPRESIDENT Hours 5Pay $0

The return

More foundations

Similar foundations

Same main cause (international aid), giving between a quarter and four times this foundation’s where possible, nearby first.

  1. Gowanus Falls FoundationReston, VA 5 grants Preselected only $165,000 giving
  2. Rae of Hope FoundationReston, VA 41 grants Preselected only $165,925 giving
  3. Krumland FoundationReston, VA 6 grants Preselected only $155,000 giving
  4. Latin American Community FoundationReston, VA 6 grants Preselected only $208,300 giving
  5. Westphalia FoundationReston, VA 6 grants Preselected only $308,100 giving