The William K Warren Foundation
The William K Warren Foundation is a private foundation, based in Tulsa, OK. IRS filing data is available from 2020 through 2024. As of 2024, the organization holds $331.4M in total assets. In 2024, it awarded 1 grant totaling $22.2M. Net investment income was $22.1M.
The William K Warren Foundation at a glance
In short: The William K Warren Foundation gave $22.2M across 1 grant in 2024 (avg $22.2M), mostly in Oklahoma. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $22,185,143
- +4.2% vs 2023
- Grants made (2024)
- 1
- +0.0% vs 2023
- Average grant
- $22,185,143
- +4.2% vs 2023
- Median grant
- $22,185,143
- Total assets
- $331,363,796
- +2.0% vs 2023
- Primary geography
- Oklahoma (100% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated September 2026.
How to apply to The William K Warren Foundation
Open Grants
1 open opportunity from The William K Warren Foundation
Who The William K Warren Foundation funds
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was Statement 29A ($22.2M).
Grant Size Distribution
5 grants across all recorded years
The most common grant size was $5M or more: 5 grants of 5 (100%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
Share of the 2024 grant dollars on its one itemized grant.
States
Cities
How The William K Warren Foundation gives
- Giving grew 28% from 2021 to 2024. Method
- In 2024 it paid out 94% 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 2020 to 2024, annual grant giving ranged from $14.2M (2020) to $22.2M (2024). In 2024 it made 1 grant totaling $22.2M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Statement 29A Tulsa, OK | Statement 29A | $22,185,143 |
Ready to take the next step with The William K Warren 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 |
|---|---|---|---|---|---|---|---|---|
| 2024 | $331,363,796 | $28,720,838 | $28,385,574 | $22,185,143 | 1 | $23,002,482 | $22,140,584 | $24,581,577 |
| 2023 | $324,945,641 | $26,542,294 | $27,729,284 | $21,283,613 | 1 | $22,071,784 | $22,432,198 | $22,950,664 |
| 2022 | $326,242,777 | $34,266,089 | $25,642,380 | $21,106,890 | 1 | $21,792,818 | $29,594,399 | $22,100,193 |
| 2021 | $318,898,600 | $38,179,587 | $23,960,329 | $17,306,916 | 1 | $17,898,468 | $37,756,278 | $21,669,541 |
| 2020 | $303,630,989 | $44,494,480 | $20,801,216 | $14,186,718 | 1 | — | $37,995,317 | $17,869,467 |
Under IRS private-foundation payout rules, The William K Warren Foundation reported a distributable amount of $24.6M for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
The William K Warren Foundation is led by J-K C Warren, CEO & Chairman since 2024 (on filings since 2020); 9 of 14 officers listed in 2024 are compensated.
Officers on the 2024 filing
J-K C Warren
CEO & Chairman
CEO & Vice Chairman → CEO & Chairman, 2024
On filings since 2020
40 hrs/week
$589K (2020) → $761K (2024)
T. Cooper
President & Director
President → President & Director, 2024
On filings since 2020
40 hrs/week
$700K (2020) → $759K (2024)
W. R. Lissau
Director & Chairman of Board
On filings since 2020
10 hrs/week
$500 (2020) → $0 (2024)
F W Murphy III
Director
On filings since 2020
0.5 hrs/week
$500 (2020) → $500 (2024)
S K Warren
Director & Senior Vice President
On filings since 2020
40 hrs/week
$183K (2020) → $214K (2024)
W. W. O'Connor
Director
On filings since 2020
0.5 hrs/week
$500 (2020) → $500 (2024)
W K WARREN Jr.
Director & Chairman Emeritus
On filings since 2020
5 hrs/week
No compensation reported
A. N. Warren
Director
On filings since 2021
0.5 hrs/week
No compensation reported
M. S. Blankenship
Director
On filings since 2021
0.5 hrs/week
No compensation reported
M. E. Young
Director
New on the 2024 filing
0.5 hrs/week
No compensation reported
D. Affeldt
Assistant Treasurer
On filings since 2020
40 hrs/week
$185K (2020) → $191K (2024)
D. McManus
Assistant Secretary
On filings since 2021
40 hrs/week
$81K (2021) → $89K (2024)
J. Adams
Secretary
On filings since 2021
40 hrs/week
$89K (2021) → $111K (2024)
J. Pierce
Treasurer
On filings since 2023
40 hrs/week
$184K (2023) → $216K (2024)
Former officers (7)
- Former: M. E. Howard (2020–2023) — Director
- Former: P. Glenn (2020–2023) — Treasurer
- Former: E. W. Blankenship (2020–2021) — Director
- Former: Devra McManus (2020) — Assistant Secretary
- Former: Julianna Adams (2020) — Secretary
- Former: R. Young (2020) — Secretary
- Former: T. Edmondson (2020) — Ast Secretary
Data from IRS Form 990 filings, 2020–2024. "On filings since" is the earliest filing we hold that lists the person; hours are average hours per week as reported.
Compensation Overview
From 2024 IRS filing
The highest reported compensation on the 2024 filing was $761K, to J-K C Warren (CEO & Chairman (Beg 5/24)). 9 officers or directors reported compensation on that filing.
Frequently asked questions about The William K Warren Foundation
How much does The William K Warren Foundation give each year?
The William K Warren Foundation gave $22.2M across 1 grant in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $21.3M across 1 grant.
How large is The William K Warren Foundation?
The William K Warren Foundation reported $331.4M in total assets on its 2024 IRS Form 990-PF. It paid out $23.0M in qualifying distributions that year, against a required minimum of $24.6M (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.
Where does The William K Warren Foundation operate?
The William K Warren Foundation has awarded grants in Oklahoma.
What is The William K Warren Foundation's EIN?
The William K Warren Foundation's EIN (Employer Identification Number) is 73-0609599. IRS Form 990 filing data is available on this page for 2020–2024.
Data last updated September 2026. Sourced from IRS Form 990-PF filings.
Data update history
(1)
When this profile's IRS filing data changed on Grantable
- IRS filings on file for fiscal years 2020–2024
Explore Open Grants
Browse active grant opportunities in The William K Warren Foundation's focus areas in our free grants database
Similar Funders
Similar funders in Oklahoma
Folds of Honor Foundation
Owasso, OK
Folds of Honor funds education scholarships for spouses and children of U.S. military service members and first responders killed or disabled in service, with awards available for K–12 and higher education in the United States and its territories. Awards are up to $5,000 per academic year, based on unmet need, and are paid directly to the school. It accepts scholarship applications through an online portal during its annual application window; it does not make grants to outside applicants.
Assets
$122.3M
Grants
1,551
Total Given
$37.6M
Tulsa Community Foundation
Tulsa, OK
Tulsa Community Foundation supports charitable causes through donor-advised grants and selected funds, including scholarships, emergency assistance, disaster relief, arts and humanities, healthcare, and financial literacy, primarily in the Tulsa metro area and eastern Oklahoma, with some giving elsewhere in the United States. Its 2024 median grant was $18,560; selected field-of-interest funds have application cycles, but the profile does not state whether it accepts unsolicited requests generally.
Assets
$1.1B
Grants
1,066
Total Given
$158.6M
Oklahoma City Community Foundation Inc
Oklahoma City, OK
The Oklahoma City Community Foundation funds community programs in children’s opportunities, health care, culture and community, older adults, parks and public space, and animal welfare, primarily in Oklahoma City and Central Oklahoma. In 2025, its grants had a median of $18,251; published ranges include up to $40,000 for Opportunities for Children and $30,000 for Culture & Community. Its website lists some programs as open, but the profile does not state whether it accepts unsolicited requests.
Assets
$1.1B
Grants
698
Total Given
$63.3M
The Anne and Henry Zarrow Foundation
Tulsa, OK
The foundation supports nonprofits addressing poverty through housing, shelter, basic needs, social services, health and mental healthcare, and community empowerment, along with education, Jewish life, culture, and racial-justice initiatives. It funds primarily in metropolitan Tulsa, with additional support across Oklahoma and in Israel; 2024 grants ranged from $200 to $2.2 million, with a median of about $24,000. It accepts unsolicited requests: eligible nonprofits can email an initial inquiry.
Assets
$281.0M
Grants
476
Total Given
$37.3M
George Kaiser Family Foundation
Tulsa, OK
George Kaiser Family Foundation funds early childhood development and education, family and community well-being, justice, affordable housing, and Tulsa neighborhood and civic initiatives, primarily in Tulsa and Oklahoma. Its 2024 grants ranged from $500 to $20.2 million, with a median of $50,000. It does not accept unsolicited proposals for its general work, though eligible nonprofits may apply through its Accelerator Grants initiative.
Assets
$5.1B
Grants
383
Total Given
$99.9M
Inasmuch Foundation
Oklahoma City, OK
Inasmuch Foundation funds community enhancement, education, human services, and journalism, with priorities including education reform, workforce development, Oklahoma journalism, homelessness prevention, and behavioral health. It focuses on Oklahoma, especially Oklahoma City; its 2024 median grant was $10,000, though awards ranged from $50 to $1.5 million. It accepts requests through open spring and fall application cycles.
Assets
$409.7M
Grants
351
Total Given
$19.5M
More similar funders
More Funders in Oklahoma
The filing figures on this page are open data under CC BY 4.0. About GrantGraph Open
Figures come from The William K Warren 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.
The William K Warren Foundation down — hundreds of funders to go?