Mammoth Amateur Hockey Association
To provide boys and girls in Evanston and neighboring communities the opportunity to learn and play hockey in a diverse program that is rooted in skills development, sportsmanship, outstanding coaching, leadership skills, strong character development and camaraderie.
Mammoth Amateur Hockey Association at a glance
- Total assets
- $227,031
- +51.1% vs 2024
- Revenue (2025)
- $870,627
- +5.7% vs 2024
- Net investment income (2025)
- $52
- +100.0% vs 2024
- Expenses (2025)
- $769,815
- -15.1% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
Who Mammoth Amateur Hockey Association funds
How this funder distributes its grants
Grant Size Distribution
3 grants across all recorded years
The most common grant size was under $50K: 2 grants of 3 (67%).
Geographic Focus
Where this funder awards grants
Grant Distribution by State
States
Cities
How Mammoth Amateur Hockey Association gives
- Giving grew 337% from 2019 to 2022. Method
From the foundation's IRS Form 990 filings. Methodology.
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2019 to 2022, annual grant giving ranged from $20K (2019) to $87K (2022). In 2022 it made 2 grants totaling $87K.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Evanston HS Hockey Evanston, IL | Programs | $74,038 |
| Robert Crown Center Evanston, IL | Programs - Ice Rink | $13,333 |
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Financial History
Multi-year comparison from IRS filings
| Filing year | Total Assets | Revenue | Expenses | Grants paid | Grants | Net Investment Income |
|---|---|---|---|---|---|---|
| 2025 | $227,031 | $870,627 | $769,815 | — | — | $52 |
| 2024 | $150,261 | $823,770 | $906,696 | — | — | $26 |
| 2023 | $236,483 | $1,026,478 | $1,071,195 | — | — | $31 |
| 2022 | $397,349 | $667,010 | $680,487 | $87,371 | 2 | $36 |
| 2021 | $389,618 | $751,108 | $756,563 | $40,000 | 1 | $20 |
| 2020 | $297,577 | $791,636 | $738,124 | — | — | $22 |
| 2019 | $196,172 | $880,889 | $801,491 | $20,000 | 1 | $26 |
About Mammoth Amateur Hockey Association
Based on IRS filings
Mammoth Amateur Hockey Association is a public charity focused on Recreation & Sports, based in Evanston, IL. IRS filing data is available from 2019 through 2025. As of 2025, the organization holds $227K in total assets. Net investment income was $52.
Focus Areas
Leadership & Key People
Officers and directors from IRS filings
Mammoth Amateur Hockey Association is led by Lisa Tjoe, President since 2025 (on filings since 2024); none of the 15 officers listed in 2025 report compensation.
Officers on the 2025 filing
Lisa Tjoe
President
Secretary → President, 2025
On filings since 2024
8 hrs/week
No compensation reported
Andy Bediz
Director
On filings since 2020
2 hrs/week
No compensation reported
Chris Steiner
Director
On filings since 2020
2 hrs/week
No compensation reported
Lane Howard
Director
On filings since 2020
2 hrs/week
No compensation reported
Zach Wotherspoon
Director
On filings since 2020
2 hrs/week
No compensation reported
Adam Coombe
Director
On filings since 2023
2 hrs/week
No compensation reported
Lauren Weiss
Director
On filings since 2023
2 hrs/week
No compensation reported
Jeremy Harbottle
Director
On filings since 2024
2 hrs/week
No compensation reported
Caroline Van Wassenhove
Director
New on the 2025 filing
2 hrs/week
No compensation reported
Clark McCarthy
Director
New on the 2025 filing
2 hrs/week
No compensation reported
Fred Wohlner
Director
New on the 2025 filing
2 hrs/week
No compensation reported
Mitch Polgar
Director
New on the 2025 filing
2 hrs/week
No compensation reported
Dominic Miretti
Vice President
Director → Vice President, 2025
On filings since 2024
8 hrs/week
No compensation reported
Becca Wadman
Treasurer
New on the 2025 filing
8 hrs/week
No compensation reported
Catherine Potts Watkins
Secretary
New on the 2025 filing
8 hrs/week
No compensation reported
Former officers (32)
- Former: Jared lee (2023–2024) — Director
- Former: Kate Knox (2023–2024) — Director
- Former: Matthew Graczyk (2023–2024) — Treasurer
- Former: Andrew Bediz (2024) — Director
- Former: Freddie Wohlner (2024) — Director
- Former: Matthew Simpson (2024) — President
- Former: Matt Simpson (2020–2023) — Director
- Former: Bob Galassi (2023) — Director
- Former: Ceannaich Ryan (2023) — President
- Former: Larissa Hennington (2023) — Director
- Former: Tom Schwarz (2023) — Secretary
- Former: Christine Perkins (2019–2022) — Director
- Former: Tim Riley (2019–2022) — President
- Former: Garry Shumaker (2020–2022) — Director
- Former: George Efstathiou (2020–2022) — Secretary
- Former: Justin Neal (2021–2022) — Director
- Former: Lindley Wisnewski (2021–2022) — Director
- Former: Brian Perkins (2022) — Director
- Former: Matt Grayczyk (2022) — Treasurer
- Former: Steve Nelson (2019–2021) — Treasurer
- Former: Laura McCabe (2021) — Director
- Former: Alex Bird (2019–2020) — Director
- Former: Jenny Dillman (2019–2020) — Director
- Former: Bradley Dunlap (2019) — President
- Former: Carolyn Ballard (2019) — Director
- Former: Dani Barker (2019) — Director
- Former: Delayon Morris (2019) — Director
- Former: Gary Destefano (2019) — Director
- Former: Joe Maguire (2019) — Director
- Former: Kim DiPadova (2019) — Secretary
- Former: Marina Marich (2019) — Director
- Former: Raj Ghate (2019) — 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.
Frequently asked questions about Mammoth Amateur Hockey Association
How large is Mammoth Amateur Hockey Association?
Mammoth Amateur Hockey Association reported $227K in total assets on its 2025 IRS Form 990. Its revenue that year was $871K.
What is Mammoth Amateur Hockey Association?
Mammoth Amateur Hockey Association is a public charity focused on Recreation & Sports, based in Evanston, IL. It holds $227K in total assets as of 2025.
Where does Mammoth Amateur Hockey Association operate?
Mammoth Amateur Hockey Association has awarded grants in Illinois.
What is Mammoth Amateur Hockey Association's EIN?
Mammoth Amateur Hockey Association's EIN (Employer Identification Number) is 23-7380547. IRS Form 990 filing data is available on this page for 2019–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings.
Data update history
(3)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2019 (received by the IRS January 4, 2020)
- Updated Form 990 for fiscal year 2021 (received by the IRS March 8, 2022)
- Updated Form 990 for fiscal year 2022 (received by the IRS January 4, 2023)
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Mammoth Amateur Hockey Association down — hundreds of funders to go?