Mount Rainier above forested ridges in Washington

Form 990-PFTax year 2025EIN 91-1997803

Cornerstone Foundation

A private foundation in Gig Harbor, WA. Its return for tax year 2025 lists 3 grants and $8,292 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

Accepts applications

The return gives an application contact and rules, as below.

Contact
Dani Groff
6606 64th Ave NW
Gig Harbor, WA 98335
Form and materials
Basic Request
Deadlines
None
Restrictions
None

Assets and giving by year

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

    $8,292

    Grants listed
    3
    Assets, end of year
    $629,529
  • Tax year 2024

    $9,824

    Grants listed
    3
    Assets, end of year
    $363,430
  • Tax year 2023

    $1,140

    Grants listed
    1
    Assets, end of year
    $339,997
  • Tax year 2022

    $3,150

    Grants listed
    1
    Assets, end of year
    $314,456
  • Tax year 2021

    $4,232

    Grants listed
    1
    Assets, end of year
    $315,967
  • Tax year 2020

    $7,148

    Grants listed
    1
    Assets, end of year
    $334,893
  • Tax year 2019

    $9,084

    Grants listed
    1
    Assets, end of year
    $291,032
  • Tax year 2018

    $8,780

    Grants listed
    1
    Assets, end of year
    $287,443

Grants paid in 2025

3 grants, largest first

As listed on the return.

  1. BCMFIrvine, CA

    Donation

    $6,000
  2. Compassion InternationalColorado SPGS, CO

    Donation

    $1,292
  3. BatGap Non-ProfitFairfield, IA

    Donation

    $1,000

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 $1,29256% of the total
  2. Religion1 grant $1,00044% of the total

By State

Grants to organizations with a US address, latest year.

  1. California1 grant $6,000
  2. Colorado1 grant $1,292
  3. Iowa1 grant $1,000

Officers, directors and trustees

2 people as filed

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

  • Yizhu SunTreasurer Hours 0Pay $0
  • Dani GroffPresident Hours 0Pay $0

The return

More foundations

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

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  3. The E-Boys ClubMercer Island, WA 18 grants Preselected only $9,621 giving
  4. The TT FoundationSeattle, WA 5 grants Preselected only $10,700 giving
  5. JTM FoundationWoodinville, WA 2 grants Accepts applications $11,200 giving