William K Warren Foundation

The William K. Warren Foundation operates from a deeply rooted Catholic philanthropic tradition established in Tulsa, Oklahoma in 1945 by William Kelly Warren and Natalie Overall Warren. With $331.4 million in assets and $27.7 million in total annual giving (FY2023), it ranks among the largest private funders in the state — but its giving is intensely concentrated rather than broadly distributed. CEO John-Kelly C. Warren, the founders' grandson, has articulated a philosophy of meaningful, transformative impact: the foundation provides 'proportionately significant financial assistance in relatively few areas of need' rather than spreading resources thinly.

First-time applicants must understand the ecosystem: Saint Francis Health System (founded by the Warrens in 1959) and the Laureate Institute for Brain Research (founded in 1989) are the foundation's anchor grantees, likely absorbing $15–17 million of the $21.3 million in annual grants paid. The remaining pool available to outside organizations — approximately $4–6 million annually — is real but highly competitive. The foundation receives approximately 300 grant requests each year and funds only a small fraction.

The application process is deliberately old-fashioned: hard copy mail only, no email, no online portal, addressed to the Chairman of the Grants Committee at PO Box 470372, Tulsa, OK 74147-0372. This is not a bureaucratic oversight — it is a filter. Organizations that cannot follow basic submission instructions are unlikely to manage programs with rigor. There is no formal letter of inquiry (LOI) stage; applicants submit the complete package directly and wait 12 weeks for a decision.

The foundation's IRS filings explicitly state 'PREFERENCE TO LOCAL CATHOLIC HEALTH CARE FACILITIES,' and this preference is real. Catholic organizations — particularly those affiliated with the Diocese of Tulsa, Catholic Charities of Oklahoma, or the Alliance for Catholic Education — begin with a structural advantage. Secular organizations can succeed, but must demonstrate strong alignment with the foundation's values: solidarity with the suffering, human dignity, evidence-based community empowerment, and long-term impact.

For first-time applicants outside the Saint Francis/Laureate ecosystem, the most viable entry points are: Catholic educational programs in the Diocese of Tulsa, mental health and neuroscience research affiliated with Tulsa universities, health education programs serving underserved populations in northeast Oklahoma, and community empowerment initiatives with demonstrated self-sufficiency outcomes. The foundation does not make grants to individuals, political organizations, labor unions, sports programs, or foreign-based institutions.

The William K. Warren Foundation's financial profile reveals a mature, well-capitalized institution with consistent and growing grantmaking over a decade. Total assets have expanded from $280.5 million (FY2012) to $331.4 million (FY2024), a 18% increase even through volatile market cycles. Annual total giving has ranged from $20.8 million (FY2020, pandemic-year low) to $27.7 million (FY2023, recent peak), a 33% range demonstrating moderate resilience.

A critical nuance separates 'grants paid' from 'total giving' in the foundation's financials. In FY2023, grants paid were $21.3 million against total giving of $27.7 million — the $6.4 million gap flows through the foundation's direct operating programs: Saint Francis Health System capital support and the William K. Warren Medical Research Center. For grant-seekers outside the anchor institutions, the relevant competition pool is the $21.3 million in grants paid, of which an estimated 70–80% ($15–17 million) goes to Saint Francis and Laureate. The accessible external pool is approximately $4–6 million per year.

Multi-year trend in grants paid: $19.3M (FY2012), $20.2M (FY2013), $15.1M (FY2014), $17.5M (FY2015), $17.7M (FY2019), $14.2M (FY2020), $17.3M (FY2021), $21.1M (FY2022), $21.3M (FY2023). The post-pandemic recovery from $14.2M to $21.3M represents a 50% increase in three years — the most active grantmaking period in a decade.

Investment income is the engine: net investment income was $22.4 million in FY2023, $29.6 million in FY2022, and $37.8 million in FY2020. The foundation's strong FY2023–2024 portfolio performance (revenue of $28.7M on $331.4M assets, an 8.7% return) positions it for continued elevated grantmaking through FY2025–2026.

Geographic concentration is absolute: 100% of identified grantee state allocations are Oklahoma, with Tulsa as the epicenter. All five IRS-reported grants reference Oklahoma recipients. The foundation's two operating programs — a tree farm servicing Tulsa beautification projects and Saint Francis campus ($97K expenses) and ACE Housing for Catholic school teachers ($11K expenses) — further illustrate the hyper-local commitment. Sector-wise, healthcare and medical research absorb the dominant share; Catholic initiatives and community programs account for the balance. No arts, sports, environmental, or international funding is evident.

The following table compares the William K. Warren Foundation to its four closest asset-size peers, all classified in the Philanthropy & Grantmaking NTEE category:

The William K. Warren Foundation is exceptional among its asset-size peers for maintaining a publicly accessible, unsolicited application process — all four comparable foundations operate exclusively by invitation. This makes Warren simultaneously the most accessible and the most transparent funder in its cohort, publishing explicit application instructions, eligibility criteria, and submission requirements. However, accessibility should not be mistaken for openness: the ~300 annual applications against a small external funding pool means selectivity remains extremely high. Warren's strict Tulsa/northeast Oklahoma geographic focus creates a narrower but more navigable competitive landscape than the national-scope peers. For organizations located in and serving Tulsa, the Warren Foundation offers a rare opportunity to access major philanthropic capital that would be unreachable at comparable foundations elsewhere.

The most recent public announcement (March 24, 2026) involved the naming of Steven A. Corcelli as the William K. Warren Foundation Dean of the College of Science at the University of Notre Dame. This endowed deanship reflects the foundation's longstanding investment in Catholic higher education at the national level — a pattern distinct from but complementary to its local Tulsa grantmaking. Notre Dame's College of Science is a logical recipient given the foundation's medical research and science priorities.

Financially, FY2023 represented the foundation's strongest recent grantmaking year: $27.7 million in total giving and $21.3 million in grants paid, with assets of $324.9 million and net investment income of $22.4 million. The FY2024 data shows assets growing to $331.4 million on $28.7 million in total revenue, though FY2024 grants paid figures were not yet available in the IRS filing, suggesting continued robust capacity.

CEO John-Kelly C. Warren (compensation: $638K–$689K across recent years) and President T. Cooper (compensation: $710K–$735K) have maintained stable leadership. No executive transitions have been announced for 2025–2026. The treasurer role transitioned to J. Pierce beginning July 2023, per IRS records.

The foundation's two direct operating programs — the Tulsa tree farm (~$97K annually) and ACE Housing for Catholic school teachers (~$11K annually) — have continued without disruption, signaling organizational stability and ongoing commitment to the Diocese of Tulsa partnership that underpins the ACE program. No new program areas or geographic expansions have been announced.

Submit hard copy only — this is not optional. The foundation does not accept email or online submissions. Your packet must be physically mailed to: Chairman, Grants Committee, The William K. Warren Foundation, Post Office Box 470372, Tulsa, Oklahoma 74147-0372. Use organizational letterhead for the cover letter; it must be signed by an authorized representative. First-class mail with delivery confirmation is advisable.

Nail the cover letter length. The 1-2 page limit is firm. Lead with the specific dollar amount requested (not a range), your legal organizational name, and one clear sentence explaining what the money will accomplish. Reviewers read hundreds of applications — get to the point on page one.

Catholic or health alignment is your strongest differentiator. The IRS filing explicitly states 'PREFERENCE TO LOCAL CATHOLIC HEALTH CARE FACILITIES.' If your organization has formal ties to the Diocese of Tulsa, is a Catholic ministry or school, or serves as a health care partner to Saint Francis Health System or Laureate Institute, state this prominently. Secular organizations should frame their values alignment using the foundation's language: improving the human condition, solidarity with suffering, empowerment rather than dependency.

Medical research and mental health are the clearest entry points for first-time applicants. The foundation specifically funds 'research too novel for other funding sources' — this is a direct invitation for innovative neuroscience, psychiatry, or behavioral health research that NIH would consider too early-stage. Academic medical programs at Tulsa University or OU-Tulsa affiliates, or organizations partnering with Laureate's research programs, are particularly well-positioned.

Write a credible sustainability plan. The application narrative requires a program evaluation plan and a post-grant sustainability roadmap. The foundation will not automatically renew, and evaluators specifically look for evidence that the program will not collapse the day Warren support ends. Name your other funders, your earned revenue strategy, or your path to government funding.

Timing matters even on a rolling basis. Submit in January or early February to align with the foundation's likely internal planning cycle. The 12-week review clock means a January submission yields a decision by April, well before most fiscal year commitments are made. Avoid summer submissions when institutional decision-making typically slows.

Do not call to check on your application. The foundation's culture emphasizes written communication, and unsolicited follow-up calls are unlikely to help and may signal poor organizational judgment. If you have not heard after 14 weeks, a brief written inquiry is appropriate.