Ancient Oaks Foundation
Ancient Oaks Foundation is a private foundation focused on Environment & Animals, based in Lake Zurich, IL. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $73K in total assets. In 2025, it made $29K in qualifying distributions.
Ancient Oaks Foundation at a glance
- Total assets
- $72,630
- -3.2% vs 2024
- Revenue (2025)
- $28,910
- -12.7% vs 2024
- Qualifying distributions (2025)
- $29,317
- +37.0% vs 2024
- Expenses (2025)
- $31,341
- +34.3% vs 2024
- Latest 990 filing
- Form 990-PF, 2025 View filing
Data from IRS Form 990-PF, 2025; updated October 2026.
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Qualifying Distributions | Distributable Amount |
|---|---|---|---|---|---|
| 2025 | $72,630 | $28,910 | $31,341 | $29,317 | $3,626 |
| 2024 | $75,061 | $33,106 | $23,339 | $21,394 | $3,456 |
| 2023 | $65,294 | $45,642 | $21,507 | $16,549 | $2,621 |
| 2022 | $41,159 | $43,614 | $29,270 | $20,660 | $1,674 |
| 2021 | $26,815 | $36,024 | $28,700 | $27,420 | $1,140 |
| 2020 | $19,491 | $26,243 | $18,052 | — | $856 |
| 2019 | $11,300 | $22,073 | $20,364 | — | $571 |
Under IRS private-foundation payout rules, Ancient Oaks Foundation reported a distributable amount of $4K for 2025 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Ancient Oaks Foundation is led by Brian Sullivan, Executive Director on the 2025 filing; 1 of 8 officers listed in 2025 is compensated.
Officers on the 2025 filing
Brian Sullivan
Executive Director
New on the 2025 filing
5 hrs/week
$9K (2025)
Mary Kozub
President
Director → President, 2022
On filings since 2019
25 hrs/week
No compensation reported
Patrick John Doyle
Director
On filings since 2023
5 hrs/week
No compensation reported
Frederick Cline
Director
New on the 2025 filing
5 hrs/week
No compensation reported
Matt Bucher
Director
New on the 2025 filing
5 hrs/week
No compensation reported
Michael Kleeman
Vice President
On filings since 2019
10 hrs/week
No compensation reported
Kevin Mulvey
Treasurer
Director → Treasurer, 2025
On filings since 2022
10 hrs/week
No compensation reported
Claudia Marie Ronayne
Secretary
Director → Secretary, 2025
On filings since 2023
5 hrs/week
No compensation reported
Former officers (7)
- Former: Alicia Timm (2019–2024) — Director
- Former: John Thode (2019–2024) — Treasurer
- Former: Charles Keegan Shiner (2022–2024) — Executive Director
- Former: David Mock (2019–2022) — Director
- Former: Judith K. Thode (2019–2022) — Director
- Former: Michelle Titterton (2021–2022) — Director
- Former: Shannon Westphal (2019–2020) — Director
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.
Compensation Overview
From 2025 IRS filing
The highest reported compensation on the 2025 filing was $9K, to Brian Sullivan (Executive Director).
Frequently asked questions about Ancient Oaks Foundation
How large is Ancient Oaks Foundation?
Ancient Oaks Foundation reported $73K in total assets on its 2025 IRS Form 990-PF. It paid out $29K in qualifying distributions that year, against a required minimum of $4K (roughly 5% of its investment assets).
What is Ancient Oaks Foundation?
Ancient Oaks Foundation is a private foundation focused on Environment & Animals, based in Lake Zurich, IL. It holds $73K in total assets as of 2025.
What is Ancient Oaks Foundation's EIN?
Ancient Oaks Foundation's EIN (Employer Identification Number) is 47-1766283. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated October 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 August 17, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS May 4, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS July 20, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS May 8, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS May 6, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS May 15, 2025)
- Added Form 990-PF for fiscal year 2025 (received by the IRS May 22, 2026)
- IRS filings on file for fiscal years 2019–2024
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