William & Pamela Ayer Foundation
William & Pamela Ayer Foundation is a private foundation, based in Bellevue, WA. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $5.2M in total assets. In 2025, it awarded 1 grant totaling $300K. Net investment income was $887K.
William & Pamela Ayer Foundation at a glance
In short: William & Pamela Ayer Foundation gave $300K across 1 grant in 2025 (avg $300K), mostly in Washington. Source: 2025 IRS Form 990-PF.
- Annual giving (2025)
- $300,000
- +10.8% vs 2024
- Grants made (2025)
- 1
- +0.0% vs 2024
- Average grant
- $300,000
- +10.8% vs 2024
- Median grant
- $300,000
- Total assets
- $5,194,782
- +12.8% vs 2024
- Primary geography
- Washington (100% 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 William & Pamela Ayer Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2025
The largest 2025 recipient was Four Winds Inc ($300K).
Grant Size Distribution
6 grants across all recorded years
The most common grant size was in the $250–500K range: 4 grants of 6 (67%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2025 grant dollars on its one itemized grant.
States
Cities
How William & Pamela Ayer Foundation gives
- Giving held roughly steady from 2022 to 2025 (+9%). Method
- In 2025 it paid out 117% 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 2019 to 2025, annual grant giving ranged from $250K (2019) to $300K (2025). In 2025 it made 1 grant totaling $300K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Four Winds Inc Deer Harbor, WA | Unrestricted | $300,000 |
Ready to take the next step with William & Pamela Ayer Foundation?
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 | $5,194,782 | $905,660 | $315,156 | $300,000 | 1 | $300,000 | $886,919 | $256,097 |
| 2024 | $4,604,278 | $441,680 | $278,523 | $270,725 | 1 | $270,725 | $430,267 | $247,289 |
| 2023 | $4,441,121 | $240,089 | $282,557 | $275,500 | 2 | $275,500 | $228,877 | $233,717 |
| 2022 | $4,483,589 | $524,992 | $284,423 | $275,000 | 2 | $275,000 | $202,144 | $233,142 |
| 2021 | $4,243,018 | $642,356 | $10,050 | — | — | — | $339,031 | $231,184 |
| 2020 | $3,610,712 | $329,047 | $6,297 | — | — | — | $319,585 | $186,213 |
| 2019 | $3,287,962 | $182,599 | $256,901 | $250,000 | 1 | — | $172,488 | $184,391 |
Under IRS private-foundation payout rules, William & Pamela Ayer Foundation reported a distributable amount of $256K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
William & Pamela Ayer Foundation's 2025 filing lists 2 officers; none of the 2 officers listed in 2025 report compensation.
Officers on the 2025 filing
Pamela L. Ayer
Trustee
On filings since 2019
2 hrs/week
No compensation reported
William S Ayer
Trustee
On filings since 2019
2 hrs/week
No compensation reported
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 William & Pamela Ayer Foundation
How much does William & Pamela Ayer Foundation give each year?
William & Pamela Ayer Foundation gave $300K across 1 grant in 2025, according to its 2025 IRS Form 990-PF. In 2024 it gave $271K across 1 grant.
How large is William & Pamela Ayer Foundation?
William & Pamela Ayer Foundation reported $5.2M in total assets on its 2025 IRS Form 990-PF. It paid out $300K in qualifying distributions that year, against a required minimum of $256K (roughly 5% of its investment assets).
Where does William & Pamela Ayer Foundation operate?
William & Pamela Ayer Foundation has awarded grants in Washington.
What is William & Pamela Ayer Foundation's EIN?
William & Pamela Ayer Foundation's EIN (Employer Identification Number) is 46-6434173. 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
(8)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS July 2, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 12, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS May 12, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 5, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS April 29, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS April 30, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 12, 2026)
- IRS filings on file for fiscal years 2019–2024
Explore Open Grants
Browse active grant opportunities in William & Pamela Ayer Foundation's focus areas in our free grants database
Similar Funders
Funders with grantees in common
McKesson Foundation Inc
Dallas, TX
The McKesson Foundation funds cancer support and care, healthcare workforce pathways, and emergency response, with grants mainly supporting organizations in the United States and Canada. Its 2025 grants had a median of $100,000, though amounts ranged from $10,000 to about $2.47 million. Its filing says it does not accept unsolicited requests, while its application page describes an online application process with stated submission windows.
Assets
$1.6M
Grants
76
Total Given
$16.6M
Chism Catherine Tuw FBO Kidney CNTR
Las Vegas, NV
Assets
—
Grants
1
Total Given
$228K
Gates Philanthropy Partners
Seattle, WA
The mission of Gates Philanthropy Partners is to work in partnership with the gates foundation and philanthropists to promote global development, global health, and U.S. education through grantmaking and the direct conduct of charitable activities.
Assets
$85.5M
Grants
3
Total Given
$1.9M
The San Simeon Fund Inc
San Francisco, CA
Assets
$75.0M
Grants
4
Total Given
$1.5M
Reed & Sarah Hunt Fund
Walnut Creek, CA
Assets
$57K
Grants
6
Total Given
$6K
Sam and Peggy Grossman Family Foundation
Phoenix, AZ
The foundation supports charitable organizations carrying out the purposes of the Arizona Community Foundation, with recent grants spanning arts, education, environment, health, and other causes. Its 2025 grants ranged from $7,500 to $50,000, with a median of $20,000, and went to organizations in several states, mostly Idaho, California, New York, Pennsylvania, and Colorado. The profile does not state whether it accepts unsolicited requests.
Assets
$21.9M
Grants
11
Total Given
$243K
More similar funders
More Funders in Washington
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from William & Pamela Ayer 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.
William & Pamela Ayer Foundation down — hundreds of funders to go?