Alonzo Mather Foundation Trust
Alonzo Mather Foundation Trust is a private foundation, based in Grayslake, IL. IRS filing data is available from 2019 through 2024. As of 2024, the organization holds $32.4M in total assets. In 2024, it awarded 1 grant totaling $2.0M. Net investment income was $1.1M.
Alonzo Mather Foundation Trust at a glance
In short: Alonzo Mather Foundation Trust gave $2.0M across 1 grant in 2024 (avg $2.0M), mostly in Illinois. Source: 2024 IRS Form 990-PF.
- Annual giving (2024)
- $1,980,000
- -1.0% vs 2023
- Grants made (2024)
- 1
- +0.0% vs 2023
- Average grant
- $1,980,000
- -1.0% vs 2023
- Median grant
- $1,980,000
- Total assets
- $32,436,938
- -3.9% vs 2023
- Primary geography
- Illinois (100% of itemized 2024 grant dollars)
- Latest 990 filing
- Form 990-PF, 2024 View filing
Data from IRS Form 990-PF, 2024; updated October 2026.
Who Alonzo Mather Foundation Trust funds
How this funder distributes its grants
Top Recipients
Top recipient in 2024
The largest 2024 recipient was The Mather Foundation ($2.0M).
Grant Size Distribution
5 grants across all recorded years
The most common grant size was in the $1–5M range: 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 Alonzo Mather Foundation Trust gives
- Giving held roughly steady from 2021 to 2024 (+10%). Method
- In 2024 it paid out 102% 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 2024, annual grant giving ranged from $1.8M (2021) to $2.0M (2023). In 2024 it made 1 grant totaling $2.0M.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| The Mather Foundation Evanston, IL | General Operating Purposes | $1,980,000 |
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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 | $32,436,938 | $1,525,759 | $2,337,434 | $1,980,000 | 1 | $2,023,970 | $1,146,153 | $1,987,948 |
| 2023 | $33,739,385 | $1,939,543 | $2,236,552 | $2,000,000 | 1 | $2,142,616 | $1,845,607 | $1,913,105 |
| 2022 | $34,077,620 | $1,598,366 | $2,245,116 | $2,000,000 | 1 | $2,130,088 | $1,462,955 | $2,052,001 |
| 2021 | $34,891,666 | $2,843,199 | $2,081,347 | $1,800,000 | 1 | $1,940,612 | $2,702,464 | $2,158,250 |
| 2020 | $34,190,230 | $936,471 | $2,065,249 | $1,830,000 | 1 | — | $827,724 | $1,789,121 |
| 2019 | $35,471,630 | $865,461 | $2,171,675 | $1,920,000 | 1 | — | $820,488 | $1,849,084 |
Under IRS private-foundation payout rules, Alonzo Mather Foundation Trust reported a distributable amount of $2.0M for 2024 — the minimum it must pay out in qualifying distributions.
Leadership & Key People
Officers and directors from IRS filings
Alonzo Mather Foundation Trust's 2024 filing lists 2 officers; all 2 officers listed in 2024 are compensated.
Officers on the 2024 filing
David Watkins
Co-Trustee
On filings since 2019
3 hrs/week
$38K (2019) → $41K (2024)
The Chicago Trust CO
Co-Trustee
New on the 2024 filing
3 hrs/week
$143K (2024)
Former officers (4)
- Former: The Chicago Trust Company NA (2019–2023) — Co-Trustee
- Former: Thomas R. Hogan (2023) — Trust Officer
- Former: Leann Irlbeck (2022) — Trust Officer
- Former: Ethel R. Kaplan (2019–2021) — Trust Officer
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 $143K, to The Chicago Trust CO (Co-Trustee). 2 officers or directors reported compensation on that filing.
Frequently asked questions about Alonzo Mather Foundation Trust
How much does Alonzo Mather Foundation Trust give each year?
Alonzo Mather Foundation Trust gave $2.0M across 1 grant in 2024, according to its 2024 IRS Form 990-PF. In 2023 it gave $2.0M across 1 grant.
How large is Alonzo Mather Foundation Trust?
Alonzo Mather Foundation Trust reported $32.4M in total assets on its 2024 IRS Form 990-PF. It paid out $2.0M in qualifying distributions that year, against a required minimum of $2.0M (roughly 5% of its investment assets).
Where does Alonzo Mather Foundation Trust operate?
Alonzo Mather Foundation Trust has awarded grants in Illinois.
What is Alonzo Mather Foundation Trust's EIN?
Alonzo Mather Foundation Trust's EIN (Employer Identification Number) is 36-6015440. 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.
Data update history
(7)
When this profile's IRS filing data changed on Grantable
- Updated Form 990-PF for fiscal year 2019 (received by the IRS July 13, 2020)
- Updated Form 990-PF for fiscal year 2020 (received by the IRS October 4, 2021)
- Updated Form 990-PF for fiscal year 2021 (received by the IRS November 3, 2022)
- Updated Form 990-PF for fiscal year 2022 (received by the IRS October 4, 2023)
- Updated Form 990-PF for fiscal year 2023 (received by the IRS September 6, 2024)
- Updated Form 990-PF for fiscal year 2024 (received by the IRS November 17, 2025)
- IRS filings on file for fiscal years 2019–2024
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