Bill & Marian Cook Foundation
The Bill & Marian Cook Foundation is a private foundation based in Scottsdale, Arizona. Its 2024 grants supported organizations working in areas including research, public policy, vision services, cancer care, and grazing education.
Bill & Marian Cook Foundation at a glance
In short: Bill & Marian Cook Foundation gave $1.7M across 26 grants in 2024 (avg $65K), top state Arizona. 48% of 2024 grantees were new. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $1,701,000
- Grants made (2024)
- 26
- Average grant
- $65,423
- Median grant
- $50,000
- Total assets
- $26,472,460
- +0.6% vs 2023
- New grantees (estimate)
- 48% first-time grantees (10 of 21, 2024; small sample)
- Primary geography
- Arizona (26% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026. Covers 15 months (fiscal year-end changed). New grantees are estimated by matching recipient names across years (methodology).
How to apply to Bill & Marian Cook Foundation
- How to Apply
-
The filing lists Ninon Tantet as the contact, “990” under form and materials, and “limit” under restrictions on awards.
- Review Cycle
- 12/31.
- Deadline
- 12/31.
- Contact
Application contact: Ninon Tantet
Mailing address: 23233 N Pima Rd Ste 113 Pmb 359, Scottsdale, AZ 85255
Phone: (480) 561-5805
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Bill & Marian Cook Foundation funds
How this funder distributes its grants
Top Recipients
Top 10 recipients in 2024
The largest 2024 recipient was Goldwater Institute ($300K across 2 grants). Together the top 10 received $1.4M.
Grant Size Distribution
115 grants across all recorded years
The most common grant size was under $50K: 64 grants of 115 (56%).
Geographic Focus
Where this funder awards grants
In 2024, the largest shares of grant dollars went to recipients in Arizona (23%), Montana (22%), and Pennsylvania (14%). Minnesota and North Carolina each received 6% of grant dollars.
Grant Distribution by State
Share of 2024 grant dollars across all 26 itemized grants.
States
Cities
Is Bill & Marian Cook Foundation open to new grantees?
48%
first-time grantees, 2024
In 2024, 10 of 21 grantees (48%) were first-time recipients. With only 21 grantees, that is a small sample: one grantee more or less moves the share by about 5 points. First grants averaged $53K; repeat grants $107K. How we count
Medians: $30K first-time, $75K repeat.
- 33% of 2024 grantees were also funded in 2023. Method
- In 2024 it paid out 109% of its IRS minimum distribution (the 5% rule). Method
Estimate from itemized grant lists in IRS Form 990-PF filings (2019–2024). Recipient names are matched across years, so a renamed or misspelled grantee can look new; grants to individuals are left out. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2024, annual grant giving ranged from $979K (2023) to $1.7M (2024, 15 months). In 2024 it made 26 grants totaling $1.7M.
*2024: Covers 15 months (fiscal year-end changed).
Grants by year
Grant recipients and amounts by year
*2024: Covers 15 months (fiscal year-end changed).
| Recipient | Purpose | Amount |
|---|---|---|
| Drexel University Philadelphia, PA | research | $175,000 |
| Goldwater Institute Phoenix, AZ | support sound public policy | $150,000 |
| Greater Missoula Family Missoula, MT | For Building 4 Yr Commitment | $150,000 |
| Goldwater Institute Phoenix, AZ | support sound public policy | $150,000 |
| Focus On Lyme Paradise Valley, AZ | research for Lyme | $105,000 |
| Minnesota Lions Vision St. Paul, MN | help the visually impaired | $80,000 |
| St Patrick Hospital Foundation Missoula, MT | cancer research | $75,000 |
| The V Foundation Cary, NC | 100% Directed to Cancer Research and Funding | $75,000 |
| Yale University Foundation New Haven, CT | For Lupus fellowship | $75,000 |
| Drexel University Philadelphia, PA | research | $75,000 |
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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 |
|---|---|---|---|---|---|---|---|---|
| 2024* | $26,472,460 | $2,372,310 | $2,205,501 | $1,701,000 | 26 | $1,701,000 | $1,839,720 | $1,566,347 |
| 2023 | $26,305,651 | $914,831 | $1,373,607 | $978,661 | 17 | $1,215,119 | $756,343 | $1,434,255 |
| 2022 | $26,764,428 | $2,550,708 | $1,797,552 | $1,383,516 | 22 | $1,610,381 | $2,419,559 | $1,460,245 |
| 2021 | $26,011,272 | $2,066,748 | $1,843,741 | $1,477,000 | 23 | — | $1,918,047 | $1,619,426 |
| 2020 | $25,788,265 | $42,304 | $1,484,144 | $1,188,698 | 27 | — | $552,179 | — |
| 2019 | $27,230,105 | $751,452 | $1,446,489 | $1,180,000 | 23 | — | $656,673 | — |
*2024: Covers 15 months (fiscal year-end changed).
Under IRS private-foundation payout rules, Bill & Marian Cook Foundation reported a distributable amount of $1.6M for 2024 — the minimum it must pay out in qualifying distributions.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
No foundation mission statement is provided. Its 2024 grants show support for research—including cancer, Lyme disease, dental research, and a lupus fellowship—as well as public policy, services for people with visual impairments, grazing education, and emergency support for families affected by cancer.
The grantees’ own descriptions illustrate the kinds of organizations supported. The V Foundation says it funds research and scientists to accelerate progress against cancer. Roc Solid Foundation says it builds hope for children and families fighting cancer. LymeLight Foundation describes its work as providing treatment grants to eligible young people with Lyme disease and raising awareness. These are the grantees’ missions, not statements of the foundation’s own mission.
Grantmaking
The largest awards included $175,000 to Drexel University for research; $150,000 to Goldwater Institute to support sound public policy; $150,000 to Greater Missoula Family for a four-year commitment; and $105,000 to Focus On Lyme for research.
Other notable grants included $80,000 to Minnesota Lions Vision to help people with visual impairments; $75,000 each to St Patrick Hospital Foundation for cancer research, The V Foundation for cancer research and funding, and Yale University Foundation for a lupus fellowship; and $70,000 to Holistic Management International for grazing education.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2024 filing lists Ninon Tantet as President, Calvin T Christian as Vice President, and Paul Tantet as Director.
Bill & Marian Cook Foundation is led by Ninon Tantet, President since 2024 (on filings since 2019); all 3 officers listed in 2024 are compensated.
Officers on the 2024 filing
Ninon Tantet
President
Secretary & Treasurer → Secttres, 2023
Secttres → President, 2024
On filings since 2019
15 hrs/week
$48K (2019) → $16K (2024)
Paul Tantet
Director
Officer → Director, 2024
On filings since 2021
15 hrs/week
$56K (2021) → $16K (2024)
Calvin T Christian
Vice President
On filings since 2019
15 hrs/week
$48K (2019) → $16K (2024)
Former officers (1)
- Former: Marian F. Cook (2019–2020) — President
Data from IRS Form 990 filings, 2019–2024. "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 $16K, to Ninon Tantet (President). 3 officers or directors reported compensation on that filing.
Frequently asked questions about Bill & Marian Cook Foundation
How much does Bill & Marian Cook Foundation give each year?
Bill & Marian Cook Foundation gave $1.7M across 26 grants in 2024, according to its 2024 IRS Form 990-PF. The 2024 filing year covers 15 months because its fiscal year-end changed. In 2023 it gave $979K across 17 grants.
What is Bill & Marian Cook Foundation's typical grant size?
Bill & Marian Cook Foundation's median grant in 2024 was $50,000, and its average grant was $65,423, across 26 grants on its 2024 IRS Form 990-PF. Organizations receiving their first grant from Bill & Marian Cook Foundation that year got $53K on average.
Where does Bill & Marian Cook Foundation give grants?
Bill & Marian Cook Foundation's top state is Arizona, with 26% of the grant dollars itemized on its 2024 IRS Form 990-PF. The next largest states were Montana (24%) and Pennsylvania (16%). The most frequent recipient cities were Missoula, MT (6 grants), Phoenix, AZ (2 grants), Philadelphia, PA (2 grants) and Cary, NC (2 grants).
Does Bill & Marian Cook Foundation give general operating support?
Not in 2024: none of the 26 grants with a stated purpose on Bill & Marian Cook Foundation's 2024 IRS Form 990-PF were described as general or operating support. Recurring purposes include "Research" (3 grants).
Who are Bill & Marian Cook Foundation's largest grantees?
Bill & Marian Cook Foundation's largest 2024 grantees include Goldwater Institute ($300,000 across 2 grants), Drexel University ($250,000 across 2 grants) and Greater Missoula Family ($225,000 across 2 grants), according to its 2024 IRS Form 990-PF. Together they received 46% of its itemized 2024 grant dollars.
How large is Bill & Marian Cook Foundation?
Bill & Marian Cook Foundation reported $26.5M in total assets on its 2024 IRS Form 990-PF. It paid out $1.7M in qualifying distributions that year, against a required minimum of $1.6M (roughly 5% of its investment assets).
What does Bill & Marian Cook Foundation fund?
No foundation mission statement is provided. See mission & focus areas ↑
How do I apply for a grant from Bill & Marian Cook Foundation?
The filing lists Ninon Tantet as the contact, “990” under form and materials, and “limit” under restrictions on awards. Eligibility and process details are in the grantmaking section of this profile. See how to apply ↑
What is Bill & Marian Cook Foundation's EIN?
Bill & Marian Cook Foundation's EIN (Employer Identification Number) is 31-1492927. IRS Form 990 filing data is available on this page for 2019–2024.
Data last updated October 2026. Sourced from IRS Form 990-PF filings. Research dossier generated September 2026.
Data update history
(5)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS August 7, 2020)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS August 10, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS August 15, 2023)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS December 26, 2025)
- IRS filings on file for fiscal years 2019–2024
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Cite this profile
Grantable. (2026). Bill & Marian Cook Foundation funder profile. GrantGraph. Retrieved October 14, 2026, from https://grantable.co/funders/bill-and-marian-cook-foundation-morg_a5529e62640542b6b2ee591c99f92107
BibTeX
@misc{grantable_311492927_2026,
author = {{Grantable}},
title = {{Bill \& Marian Cook Foundation funder profile}},
howpublished = {GrantGraph},
year = {2026},
url = {https://grantable.co/funders/bill-and-marian-cook-foundation-morg_a5529e62640542b6b2ee591c99f92107},
note = {Accessed 2026-10-14. Data licensed CC BY 4.0}
}The figures on this page are open data under CC BY 4.0: reuse them with credit to Grantable and a link. Download the data.
Figures come from Bill & Marian Cook 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.
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