Cornerstone Foundation
Cornerstone Foundation is a private foundation, based in Gig Harbor, WA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $630K in total assets. In 2025, it awarded 3 grants totaling $8K. Net investment income was $255K.
Cornerstone Foundation at a glance
In short: Cornerstone Foundation gave $8K across 3 grants in 2025 (avg $3K), mostly in California. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $8,292
- -15.6% vs 2024
- Grants made (2025)
- 3
- +0.0% vs 2024
- Average grant
- $2,764
- -15.6% vs 2024
- Median grant
- $1,292
- Total assets
- $629,529
- +73.2% vs 2024
- Primary geography
- California (72% 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 Foundation funds
How this funder distributes its grants
Top Recipients
Top 3 recipients in 2025
The largest 2025 recipient was BCMF ($6K). Together the top 3 received $8K.
Grant Size Distribution
9 grants across all recorded years
The most common grant size was under $50K: 9 grants of 9 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of 2025 grant dollars across all 3 itemized grants.
States
Cities
How Cornerstone Foundation gives
- Giving grew 163% from 2022 to 2025. Method
- In 2025 it paid out 45% of its IRS minimum distribution (the 5% rule). Foundations have until the end of the next year to meet it. 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 2019 to 2025, annual grant giving ranged from $1K (2023) to $10K (2024). In 2025 it made 3 grants totaling $8K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| BCMF Irvine, CA | Donation | $6,000 |
| Compassion International Colorado Springs, CO | Donation | $1,292 |
| BatGap Non-Profit Fairfield, IA | Donation | $1,000 |
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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 | $629,529 | $24,380 | $8,292 | $8,292 | 3 | $8,292 | $255,389 | $18,525 |
| 2024 | $363,430 | $33,257 | $9,824 | $9,824 | 3 | $9,824 | — | $16,984 |
| 2023 | $339,997 | $27,821 | $1,140 | $1,140 | 1 | $1,140 | — | $15,618 |
| 2022 | $314,456 | $7,735 | $3,510 | $3,150 | 1 | $3,510 | — | $10,309 |
| 2021 | $315,967 | $10,133 | $4,232 | $4,232 | 1 | $4,232 | — | $16,416 |
| 2020 | $334,893 | $30,009 | $7,148 | $7,148 | 1 | — | $13,493 | $14,644 |
| 2019 | $291,032 | $12,673 | $9,084 | $9,084 | 1 | — | — | $12,938 |
Under IRS private-foundation payout rules, Cornerstone Foundation reported a distributable amount of $19K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Cornerstone Foundation is led by Dani Groff, President on every filing since 2019; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Dani Groff
President
On filings since 2019
No compensation reported
Yizhu Sun
Treasurer
On filings since 2019
No compensation reported
Former officers (2)
- Former: Becky Wenger (2019–2023) — Secretary
- Former: Mildred Groff (2019–2021) — Vice President
Data from IRS Form 990 filings, 2019–2025. "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 Foundation
How much does Cornerstone Foundation give each year?
Cornerstone Foundation gave $8K across 3 grants in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $10K across 3 grants.
What is Cornerstone Foundation's typical grant size?
Cornerstone Foundation's median grant in 2025 was $1,292, and its average grant was $2,764, across 3 grants on its 2025 IRS Form 990-PF.
Where does Cornerstone Foundation give grants?
Cornerstone Foundation gives mostly in California: 72% of the grant dollars itemized on its 2025 IRS Form 990-PF went to recipients there. The next largest states were Colorado (16%) and Iowa (12%).
Does Cornerstone Foundation give general operating support?
Not in 2025: none of the 3 grants with a stated purpose on Cornerstone Foundation's 2025 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Donation" (3 grants).
How large is Cornerstone Foundation?
Cornerstone Foundation reported $630K in total assets on its 2025 IRS Form 990-PF. It paid out $8K in qualifying distributions that year, against a required minimum of $19K (roughly 5% of its investment assets). Falling short in one year is not a violation: foundations have until the end of the next year to meet the minimum.
What is Cornerstone Foundation's EIN?
Cornerstone Foundation's EIN (Employer Identification Number) is 91-1997803. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 4, 2025)
- Updated Form 990-PF for fiscal year 2025 (received by the IRS May 3, 2026)
- Added Form 990-PF for fiscal year 2019 (received by the IRS May 11, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 2, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS April 25, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS April 8, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 14, 2024)
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