Civic Intelligence

Glenbrook High School Foundation

EIN 30-0512492 • 501(c)3 • Glenview, IL

Profile

Support the activities of Glenbrook High School

3801 W Lake AveGlenview, IL 60026-5806

www.glenbrookfoundation.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

Score unavailable

No value available

Liabilities-to-assets requires both liabilities and assets on the latest valid filing.

Source year 2024

Liabilities / Revenue

Score unavailable

No value available

Liabilities-to-revenue requires both liabilities and revenue on the latest valid filing.

Source year 2024

Net Margin

8th percentile

-130%

Higher net margin than 8% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2024

Top Officer Pay

84th percentile

$0

Higher top officer pay than 84% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2022

Asset Growth

43rd percentile

-6.3%

Faster asset growth than 43% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2022 to 2024

Revenue Growth

74th percentile

22%

Faster revenue growth than 74% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2022 to 2024

Balance Sheet
Liabilities / AssetsScore unavailable

Assets

Down

$146,074

Down $35,965 (-20%) from 2023

Liabilities

-

No earlier filing loaded for comparison.

Net Assets

Down

$146,074

Down $35,965 (-20%) from 2023

Operations
Liabilities / RevenueScore unavailableNet Margin8th percentile

Revenue

Down

$27,750

Down $44,419 (-62%) from 2023

Expenses

Up

$63,715

Up $7,359 (+13%) from 2023

Net Income

Down

-$35,965

Down $51,778 (-327%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth43rd percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$300K$200K$100K$0Assets 2020: $213,277Net Assets 2020: $213,2772020Assets 2021: $196,073Net Assets 2021: $196,0732021Assets 2022: $166,226Net Assets 2022: $166,2262022Assets 2023: $182,039Net Assets 2023: $182,0392023Assets 2024: $146,074Net Assets 2024: $146,0742024

Highlighted filing

2024

Assets$146,074
Liabilities-
Net Assets$146,074
Open 2024 Filing

Operations Trend

Revenue Growth74th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$100K$50K$0-$50KRevenue 2020: $28,520Expenses 2020: $29,776Net Income 2020: -$1,2562020Revenue 2021: $58,932Expenses 2021: $76,136Net Income 2021: -$17,2042021Revenue 2022: $18,658Expenses 2022: $48,505Net Income 2022: -$29,8472022Revenue 2023: $72,169Expenses 2023: $56,356Net Income 2023: $15,8132023Revenue 2024: $27,750Expenses 2024: $63,715Net Income 2024: -$35,9652024

Highlighted filing

2024

Revenue$27,750
Expenses$63,715
Net Income-$35,965
Open 2024 Filing

Filings

Most recent year

2024 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$146,074
Liabilities
-
Net assets
$146,074
Revenue
$27,750
Expenses
$63,715
Net income
-$35,965
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$1.46$1.46$0.28$0.64$0.36
2023Detailed filing. Detailed filing data is available for this year.$1.82$1.82$0.72$0.56$0.16
2022Detailed filing. Detailed filing data is available for this year.$1.66$1.66$0.19$0.49$0.30
2021Detailed filing. Detailed filing data is available for this year.$1.96$1.96$0.59$0.76$0.17
2020Detailed filing. Detailed filing data is available for this year.$2.13$2.13$0.29$0.30$0.01
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Oct 21, 2025
Return Version
2024v5.2
Gross Receipts
$37,099
Mission and Program Overview

Mission

Support the activities of Glenbrook High School

Program Services

DescriptionGrantsExpenses
Scholarships to graduating students-$10,000
Innovation grants to teachers-$4,188
Compensation and Service Providers
Top Officer Pay84th percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
Adam MatheinSecretary-$0--
Paul PrymaTrustee-$0--
Bill KnappTrustee-$0--
Gabrielle TwoTrustee-$0--
Matthew SaffarChairman-$0--
Neale WilliamsTrustee-$0--
Charles JohnsSuperintendent-$0--
Maren OkrzynskiTreasurer-$0--
Monique CollinTrustee-$0--
Ed LeszynskiTrustee-$0--
Timothy HeubleinTrustee-$0--
Michael KupferTrustee-$0--
Fundraising, Events, and Gaming

Fundraising Events

EventGross ReceiptsGross RevenueDirect ExpensesNet Income
Theater event$16,889$16,889$9,349$7,540
Total Events$16,889$16,889$9,349$7,540
Filing and Contact Details

Filer

Filer Name
Glenbrook High School Foundation
EIN
30-0512492
Address
3801 W Lake Ave, Glenview, IL 60026-5806

Signing Officer

Name
Maren Okrzynski
Title
Treasurer
Signed
2025-10-21
Discuss with paid preparer
Yes

Preparer

Firm
Rosetree & Company
Address
8831 Kenneth, Skokie, IL 60076
Preparer
Richard Rosenbaum
Phone
8476734010
Supplemental Narrative

Additional Explanations

Form 990-EZ, Part I, Line 8, Other Revenue

“Miscellaneous 2,978”

Form 990-EZ, Part I, Line 10, Grants Paid

“Activity , Grantee Glenbrok High School Dist 225 2300 Shermer Northbrook IL 60062, Relationship , Description of Property wide format printer, Purpose of Payment program support, Book Value 0, Method Used to Determine BV purchase price, Fair Market Value 30,429, Method Used to Determine FMV purchase price, Date Received 6/24/2024”

Form 990-EZ, Part I, Line 16, Other Expenses

“Supplies 1,056”

Form 990-EZ, Part I, Line 16, Other Expenses

“Administrative expenses 7,559”

Form 990-EZ, Part I, Line 16, Other Expenses

“Advertising 3,485”

Form 990-EZ, Part I, Line 16, Other Expenses

“Innovation grants 4,188”

Form 990-EZ, Part I, Line 16, Other Expenses

“Bank charges 188”

Form 990-EZ, Part I, Line 16, Other Expenses

“Distinguished Alumni award 2,000”

Form 990-EZ, Part I, Line 16, Other Expenses

“Filing fees 10”

Form 990-EZ, Part I, Line 16, Other Expenses

“Miscellaneous 22”

Form 990-EZ, Part I, Line 16, Other Expenses

“Recognition gift 219”

Form 990-EZ, Part I, Line 16, Other Expenses

“Other programs 3,804”

Raw XML Appendix212 raw XML fields

This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.

Path#Value
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IRS990EZ/BooksInCareOfDetail/USAddress/CityNm0Glenview
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt80
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt90
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt100
IRS990EZ/OfficerDirectorTrusteeEmplGrp/CompensationAmt110
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm0Adam Mathein
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm1Paul Pryma
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm2Bill Knapp
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm3Gabrielle Two
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm4Matthew Saffar
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm5Neale Williams
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm6Charles Johns
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm7Maren Okrzynski
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm8Monique Collin
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm9Ed Leszynski
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm10Timothy Heublein
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm11Michael Kupfer
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt0Secretary
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt1Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt2Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt3Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt4Chairman
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt5Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt6Superintendent
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt7Treasurer
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt8Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt9Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt10Trustee
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt11Trustee
IRS990EZ/OperateHospitalInd0false
IRS990EZ/Organization501c3Ind0X
IRS990EZ/OrganizationDissolvedEtcInd0false
IRS990EZ/OrganizationHadUBIInd0false
IRS990EZ/OtherExpensesTotalAmt022531
IRS990EZ/OtherRevenueTotalAmt02978
IRS990EZ/PartVIHghstPdCntrctProfSrvcTxt0NONE
IRS990EZ/PartVIOfCompOfHghstPdEmplTxt0NONE
IRS990EZ/PoliticalCampaignActyInd0false
IRS990EZ/PrimaryExemptPurposeTxt0Support the activities of Glenbrook High School
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IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt010000
IRS990EZ/ProgramSrvcAccomplishmentGrp/ProgramServiceExpensesAmt14188
IRS990EZ/ProhibitedTaxShelterTransInd0false
IRS990EZ/RelatedOrganizationCtrlEntInd0false
IRS990EZ/SchoolOperatingInd0false
IRS990EZ/SpecialEventsDirectExpensesAmt09349
IRS990EZ/SpecialEventsNetIncomeLossAmt07540
IRS990EZ/SubjectToProxyTaxInd0false
IRS990EZ/TanningServicesProvidedInd0false
IRS990EZ/TaxImposedUnderIRC4911Amt00
IRS990EZ/TaxImposedUnderIRC4912Amt00
IRS990EZ/TaxImposedUnderIRC4955Amt00
IRS990EZ/TotalExpensesAmt063715
IRS990EZ/TotalProgramServiceExpensesAmt014188
IRS990EZ/TotalRevenueAmt027750
IRS990EZ/TransactionWithControlEntInd0false
IRS990EZ/TrnsfrExmptNonChrtblRltdOrgInd0false
IRS990EZ/TypeOfOrganizationCorpInd0X
IRS990EZ/WebsiteAddressTxt0www.glenbrookfoundation.org
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt032274
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt080649
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt027699
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt058919
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt031520
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt0231061
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt04825
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IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt0220
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt012
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt08
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IRS990ScheduleA/PublicOrganization170Ind0X
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IRS990ScheduleA/PublicSupportPY170Pct00.98360
IRS990ScheduleA/PublicSupportTotal170Amt0231061
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind0X
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt032274
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IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt031520
IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt0231061
IRS990ScheduleA/TotalSupportAmt0238848
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorNum0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine20RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt0RESTRICTED
IRS990ScheduleG/AgrmtProfFundraisingActyInd0false
IRS990ScheduleG/EmailSolicitationsInd0X
IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt09349
IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm0Theater event
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt016889
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IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt09349
IRS990ScheduleG/InPersonSolicitationsInd0X
IRS990ScheduleG/LicensedStatesCd0IL
IRS990ScheduleG/MailSolicitationsInd0X
IRS990ScheduleG/SpecialFundraisingEventsInd0X
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0Miscellaneous 2,978
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1Activity , Grantee Glenbrok High School Dist 225 2300 Shermer Northbrook IL 60062, Relationship , Description of Property wide format printer, Purpose of Payment program support, Book Value 0, Method Used to Determine BV purchase price, Fair Market Value 30,429, Method Used to Determine FMV purchase price, Date Received 6/24/2024
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2Supplies 1,056
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3Administrative expenses 7,559
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4Advertising 3,485
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt5Innovation grants 4,188
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt6Bank charges 188
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt7Distinguished Alumni award 2,000
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt8Filing fees 10
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt9Miscellaneous 22
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt10Recognition gift 219
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt11Other programs 3,804
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0Form 990-EZ, Part I, Line 8, Other Revenue
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1Form 990-EZ, Part I, Line 10, Grants Paid
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc4Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc5Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc6Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc7Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc8Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc9Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc10Form 990-EZ, Part I, Line 16, Other Expenses
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc11Form 990-EZ, Part I, Line 16, Other Expenses
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd0true
ReturnHeader/BusinessOfficerGrp/PersonNm0Maren Okrzynski
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0Treasurer
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-10-21
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0Glenbrook High School Foundation
ReturnHeader/Filer/BusinessNameControlTxt0GLEN
ReturnHeader/Filer/EIN0300512492
ReturnHeader/Filer/USAddress/AddressLine1Txt03801 W Lake Ave
ReturnHeader/Filer/USAddress/CityNm0Glenview
ReturnHeader/Filer/USAddress/StateAbbreviationCd0IL
ReturnHeader/Filer/USAddress/ZIPCd0600265806
ReturnHeader/IRSResponsiblePrtyInfoCurrInd0true
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0363314633
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0Rosetree & Company
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt08831 Kenneth
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0Skokie
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0IL
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd060076
ReturnHeader/PreparerPersonGrp/PhoneNum08476734010
ReturnHeader/PreparerPersonGrp/PreparationDt02025-11-06
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0Richard Rosenbaum
ReturnHeader/ReturnTs02025-11-06T10:21:09-00:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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