Glenbrook South Titan Booster Club Inc
Glenbrook South Titan Booster Club Inc is a public charity based in Chicago, Illinois. It is a volunteer parent-and-supporter organization that raises funds for interscholastic athletics at Glenbrook South High School in Glenview, Illinois, and describes its support as part of students’ educational experience.
Glenbrook South Titan Booster Club Inc at a glance
In short: Glenbrook South Titan Booster Club Inc reported $268K in grants paid in 2025 (a total; its filing lists no individual grants). Source: 2025 IRS Form 990.
- Grants paid (2025)
- $268,067 — reported as a total on the IRS filing, without an itemized list
- +660.7% vs 2024
- Total assets
- $225,179
- -36.3% vs 2024
- Revenue (2025)
- $162,236
- -4.0% vs 2024
- Net investment income (2025)
- $13,584
- +40.2% vs 2024
- Expenses (2025)
- $290,822
- +396.8% vs 2024
- Latest 990 filing
- Form 990, 2025 View filing
Data from IRS Form 990, 2025; updated September 2026.
How to apply to Glenbrook South Titan Booster Club Inc
- Contact
Mailing address: 70 West Madison St, Chicago, IL 60602
Phone: (847) 208-0455
Website: https://gbstitanboosterclub.com
Application details from Grantable's research on the foundation's public materials; confirm on its website before applying.
Who Glenbrook South Titan Booster Club Inc funds
How this funder distributes its grants
Grant Size Distribution
1 grant across all recorded years
The most common grant size was under $50K: 1 grant of 1 (100%).
Geographic Focus
Where this funder awards grants
The club supports athletics at Glenbrook South High School in Glenview, Illinois.
Grant Distribution by State
States
Cities
Giving History
Giving Over Time
Total grant dollars and number of grants per year
From 2024 to 2025, annual grant giving ranged from $35K (2024) to $268K (2025). In 2025 it reported $268K in grants paid, as a total without an itemized list.
Hatched bars: grants paid as reported on the IRS filing, which lists no individual grants for that year.
Grants by year
Grant recipients and amounts by year
| Recipient | Purpose | Amount |
|---|---|---|
| Glenbrook South High School Glenview, IL | — | $35,240 |
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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 | $225,179 | $162,236 | $290,822 | $268,067 | Total only | $13,584 |
| 2024 | $353,765 | $168,953 | $58,534 | $35,240 | 1 | $9,686 |
| 2023 | $243,346 | $116,256 | $80,148 | — | — | — |
"Total only": grants paid as reported on the IRS filing, which lists no individual grants for that year.
Research compiled by Grantable AI from public sources. Last updated September 2026.
Mission & Focus Areas
The organization’s 2025 filing states that its mission is to promote and encourage interest in Glenbrook South High School’s athletic department and generate school spirit for its programs. Its website describes fundraising to support a first-class athletic program.
The 2025 filing lists donations to Glenbrook South athletics for a weight-room remodel and equipment, a bathroom remodel, a HUDL subscription, and wish-list sports equipment for various sports and teams. The club’s website says it donated more than $140,000 for strength-training equipment for the new weight room.
Grantmaking
The 2024 filing reports one grant totaling $35,240. The 2023 and 2025 filings each report zero grants. No grantee or grant amount detail is provided for the 2024 grant, so a typical grant size and notable grantees cannot be identified from the available information.
Leadership & Key People
Leadership team and compensation from IRS filings
The 2025 filing lists:
- Ed Haravon — President
- Theresa Rasmussen — Vice President
- David Kim — Treasurer
- Lauri Niedermaier — Secretary
Glenbrook South Titan Booster Club Inc is led by Ed Haravon, President since 2025 (on filings since 2024); none of the 4 officers listed in 2025 report compensation.
Officers on the 2025 filing
Ed Haravon
President
Vice President → President, 2025
On filings since 2024
3 hrs/week
No compensation reported
David Kim
Treasurer
Director → Treasurer, 2025
On filings since 2024
2 hrs/week
No compensation reported
Lauri Niedermaier
Secretary
Director → Secretary, 2025
On filings since 2024
1 hr/week
No compensation reported
Theresa Rasmussen
Vice President
Secretary → Vice President, 2025
On filings since 2024
2 hrs/week
No compensation reported
Former officers (27)
- Former: Adam Koopersmith (2023–2024) — Treasurer
- Former: Katie Bauer (2023–2024) — President
- Former: Michelle Rupprecht (2023–2024) — Director
- Former: Anne Hoffer (2024) — Director
- Former: Anne Moss (2024) — Director
- Former: Bob Szafranski (2024) — Director
- Former: Chelle Costianas (2024) — Director
- Former: Christy Shellenbarger (2024) — Director
- Former: Colleen Wilkins (2024) — Director
- Former: Dana Ward (2024) — Director
- Former: Darrin Baim (2024) — Director
- Former: Jane Devine (2024) — Director
- Former: Jenny Courtad (2024) — Director
- Former: Jenny Gitelson (2024) — Director
- Former: Josh Holton (2024) — Director
- Former: Joy Lewis (2024) — Director
- Former: Katie Davis (2024) — Director
- Former: Kerry Ehlinger (2024) — Director
- Former: Krista Galat (2024) — Director
- Former: Lisa Lathrop (2024) — Director
- Former: Lynette Pollock (2024) — Director
- Former: Mark Peschke (2024) — Director
- Former: Natalie Stanzi (2024) — Director
- Former: Nicole Carlson (2024) — Director
- Former: Sonia Prikos (2024) — Director
- Former: Staci Willis (2024) — Director
- Former: Irene Benedict (2023) — President
Data from IRS Form 990 filings, 2023–2025. "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 Glenbrook South Titan Booster Club Inc
How much does Glenbrook South Titan Booster Club Inc give each year?
Glenbrook South Titan Booster Club Inc reported $268K in grants paid in 2025 on its 2025 IRS Form 990, as a total without an itemized list of grants. In 2024 it gave $35K across 1 grant.
How large is Glenbrook South Titan Booster Club Inc?
Glenbrook South Titan Booster Club Inc reported $225K in total assets on its 2025 IRS Form 990. Its revenue that year was $162K.
What does Glenbrook South Titan Booster Club Inc fund?
The organization’s 2025 filing states that its mission is to promote and encourage interest in Glenbrook South High School’s athletic department and generate school spirit for its programs. Its website describes fundraising to support a first-class athletic program. See mission & focus areas ↑
How do I apply for a grant from Glenbrook South Titan Booster Club Inc?
Glenbrook South Titan Booster Club Inc has no public application process in the sources Grantable reviewed. Check gbstitanboosterclub.com for current guidelines, or contact the foundation directly before submitting a request.
Where does Glenbrook South Titan Booster Club Inc make grants?
The club supports athletics at Glenbrook South High School in Glenview, Illinois.
What is Glenbrook South Titan Booster Club Inc's EIN?
Glenbrook South Titan Booster Club Inc's EIN (Employer Identification Number) is 93-4417242. IRS Form 990 filing data is available on this page for 2023–2025.
Data last updated September 2026. Sourced from IRS Form 990 filings. Research dossier generated September 2026.
Data update history
(4)
When this profile's IRS filing data changed on Grantable
- Updated Form 990 for fiscal year 2024 (received by the IRS May 13, 2025)
- Updated Form 990-EZ for fiscal year 2023 (received by the IRS May 9, 2024)
- Added Form 990 for fiscal year 2025 (received by the IRS May 29, 2026)
- IRS filings on file for fiscal years 2023–2024
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