Civic Intelligence

Rotary Club of Tiburon Sunset Foundation

EIN 68-0458461 • 501(c)3 • Tiburon, CA

Profile

Charity: support of local programs for public benefit

PO Box 236Tiburon, CA 94920-0236

n/A

Siviq Scores

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

Liabilities / Assets

77th percentile

0.08x

Higher debt load relative to assets than 77% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Liabilities / Revenue

87th percentile

0.20x

Higher debt load relative to revenue than 87% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Net Margin

79th percentile

26%

Higher net margin than 79% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Top Officer Pay

81st percentile

$0

Higher top officer pay than 81% of similar nonprofits.

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

501(c)3 • <$500k nonprofits • Source year 2025

Asset Growth

69th percentile

11%

Faster asset growth than 69% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Revenue Growth

56th percentile

2.0%

Faster revenue growth than 56% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets77th percentile

Assets

Up

$263,606

Up $26,241 (+11%) from 2024

Liabilities

Down

$21,256

Down $1,152 (-5.1%) from 2024

Net Assets

Up

$242,350

Up $27,393 (+13%) from 2024

Operations
Liabilities / Revenue87th percentileNet Margin79th percentile

Revenue

Up

$104,827

Up $2,096 (+2.0%) from 2024

Expenses

Up

$77,434

Up $17,839 (+30%) from 2024

Net Income

Down

$27,393

Down $15,743 (-36%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth69th percentile

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

$300K$200K$100K$0Assets 2011: $44,956Liabilities 2011: $02011Assets 2012: $47,782Liabilities 2012: $02012Assets 2013: $56,823Liabilities 2013: $02013Assets 2014: $71,665Liabilities 2014: $02014Assets 2015: $72,223Net Assets 2015: $72,2232015Assets 2016: $86,820Net Assets 2016: $86,8202016Assets 2017: $87,994Net Assets 2017: $87,9942017Assets 2018: $92,794Net Assets 2018: $92,7942018Assets 2019: $121,527Net Assets 2019: $121,5272019Assets 2020: $133,265Net Assets 2020: $133,2652020Assets 2021: $139,130Net Assets 2021: $139,1302021Assets 2022: $145,539Liabilities 2022: $6,291Net Assets 2022: $139,2482022Assets 2023: $186,554Liabilities 2023: $14,733Net Assets 2023: $171,8212023Assets 2024: $237,365Liabilities 2024: $22,408Net Assets 2024: $214,9572024Assets 2025: $263,606Liabilities 2025: $21,256Net Assets 2025: $242,3502025

Highlighted filing

2025

Assets$263,606
Liabilities$21,256
Net Assets$242,350
Open 2025 Filing

Operations Trend

Revenue Growth56th percentile

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

$150K$100K$50K$0Revenue 2011: $32,629Expenses 2011: $25,575Net Income 2011: $7,0542011Revenue 2012: $27,500Expenses 2012: $24,674Net Income 2012: $2,8262012Revenue 2013: $29,876Expenses 2013: $20,835Net Income 2013: $9,0412013Revenue 2014: $44,778Expenses 2014: $29,936Net Income 2014: $14,8422014Revenue 2015: $31,019Expenses 2015: $30,461Net Income 2015: $5582015Revenue 2016: $49,878Expenses 2016: $35,281Net Income 2016: $14,5972016Revenue 2017: $31,314Expenses 2017: $30,140Net Income 2017: $1,1742017Revenue 2018: $36,320Expenses 2018: $31,520Net Income 2018: $4,8002018Revenue 2019: $69,052Expenses 2019: $40,319Net Income 2019: $28,7332019Revenue 2020: $48,841Expenses 2020: $37,606Net Income 2020: $11,2352020Revenue 2021: $58,294Expenses 2021: $51,939Net Income 2021: $6,3552021Revenue 2022: $60,873Expenses 2022: $57,980Net Income 2022: $2,8932022Revenue 2023: $83,484Expenses 2023: $50,911Net Income 2023: $32,5732023Revenue 2024: $102,731Expenses 2024: $59,595Net Income 2024: $43,1362024Revenue 2025: $104,827Expenses 2025: $77,434Net Income 2025: $27,3932025

Highlighted filing

2025

Revenue$104,827
Expenses$77,434
Net Income$27,393
Open 2025 Filing

Filings

Most recent year

2025 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$263,606
Liabilities
$21,256
Net assets
$242,350
Revenue
$104,827
Expenses
$77,434
Net income
$27,393
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$2.64$0.21$2.42$1.05$0.77$0.27
2024Detailed filing. Detailed filing data is available for this year.$2.37$0.22$2.15$1.03$0.60$0.43
2023Detailed filing. Detailed filing data is available for this year.$1.87$0.15$1.72$0.83$0.51$0.33
2022Detailed filing. Detailed filing data is available for this year.$1.46$0.06$1.39$0.61$0.58$0.03
2021Detailed filing. Detailed filing data is available for this year.$1.39$1.39$0.58$0.52$0.06
2020Detailed filing. Detailed filing data is available for this year.$1.33$1.33$0.49$0.38$0.11
2019Detailed filing. Detailed filing data is available for this year.$1.22$1.22$0.69$0.40$0.29
2018Detailed filing. Detailed filing data is available for this year.$0.93$0.93$0.36$0.32$0.05
2017Detailed filing. Detailed filing data is available for this year.$0.88$0.88$0.31$0.30$0.01
2016Detailed filing. Detailed filing data is available for this year.$0.87$0.87$0.50$0.35$0.15
2015Detailed filing. Detailed filing data is available for this year.$0.72$0.72$0.31$0.30$0.01
2014Summary only. Only limited summary data is available for this year.$0.72$0.00$0.45$0.30$0.15
2013Summary only. Only limited summary data is available for this year.$0.57$0.00$0.30$0.21$0.09
2012Summary only. Only limited summary data is available for this year.$0.48$0.00$0.28$0.25$0.03
2011Summary only. Only limited summary data is available for this year.$0.45$0.00$0.33$0.26$0.07
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jul 1, 2024 to Jun 30, 2025
Signed
Sep 23, 2025
Return Version
2024v5.1
Gross Receipts
$129,603
Mission and Program Overview

Mission

To make charitable donations and perform related social services

Charity: support of local programs for public benefit

Program Services

DescriptionGrantsExpenses
Alzheimer Association Book Exchange Homeward Bound Huckleberry Youth Landmarks Society Marin Catholic Scholarship Computer Marin Symphony Marin Villages Painted Bins,Paula Little Flower Fund Point Reyes National Seashore Association Prandi Children Foundation Reed Elementary School RYLA,SF Marin Food Bank St. Vinent de Paul of Marin,$43,378$43,378
Tiburon Peninsula Library Foundation: Promotion of literacy in the local area.$10,000$10,000
Wildlife Relief Fund: Assistance with recovery from California wildfires.$6,250$6,250
Shelterbox: Disaster relief.$5,700$5,700
All Grantees are listed on Schedule O$0$0
Compensation and Service Providers
Top Officer Pay81st percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
Brian SwiftPresident And Trustee-$0--
Robert HendryTreasurer And Trustee-$0--
Valerie CastellaSecretary And Trustee-$0--
Kenneth NemzerAssistant Treasurer-$0--
Wayne WagnerTrustee-$0--
David BennettTrustee-$0--
Mary Beth LaMotteTrustee-$0--
Harry MillerTrustee-$0--
Fundraising, Events, and Gaming

Fundraising Events

EventGross ReceiptsGross RevenueDirect ExpensesNet Income
Auction$18,653$18,653$3,380$15,273
Event 2$0$0$0$0
Total Events$18,653$18,653$3,380$15,273
Filing and Contact Details

Filer

Filer Name
Rotary Club of Tiburon Sunset Foundation
EIN
68-0458461
Address
PO BOX 236, TIBURON, CA 94920-0236

Signing Officer

Name
Kenneth Press Nemzer
Title
Assistant Treasurer
Phone
4153083408
Signed
2025-09-23
Supplemental Narrative

Additional Explanations

Part I, line 8

“| Other Revenues:, Amount:| No other revenue, $0|”

Part I, line 10

“| Grants And Similar Amounts Paid:, Amount:| Grants to charitable organizations in the United States primarily based in Marin County California., $65328|”

Part I, line 16

“| Other Expenses:, Amount:| Aministration of Foundation; Community Relations., $12106|”

Part II, line 24

“| Explanation:, BOYAmount:, EOYAmount:| Other Assets: Receivables, $17873, $2216|”

Part II, line 26

“| Explanation:, BOYAmount:, EOYAmount:| Line 26 Liabiities: Checks in Process, $22408, $21256|”

Raw XML Appendix357 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/PrintingPublicationsPostageAmt00
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IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus3YearsAmt025000
IRS990ScheduleA/SubstantialContributorsAmtGrp/CurrentTaxYearMinus4YearsAmt025000
IRS990ScheduleA/SubstantialContributorsAmtGrp/TotalAmt0150800
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearAmt00
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus1YearAmt00
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus2YearsAmt00
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus3YearsAmt00
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/CurrentTaxYearMinus4YearsAmt00
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft509Grp/TotalAmt00
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY509Ind0X
IRS990ScheduleA/Total509Grp/CurrentTaxYearAmt0112124
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus1YearAmt083967
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus2YearsAmt061705
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus3YearsAmt043075
IRS990ScheduleA/Total509Grp/CurrentTaxYearMinus4YearsAmt043135
IRS990ScheduleA/Total509Grp/TotalAmt0344006
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearAmt0129603
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt0102731
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt083484
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt044118
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt043577
IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt0403513
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/CharitableDistributionRqrInd0false
IRS990ScheduleG/CntrctWith3rdPrtyForGameRevInd0false
IRS990ScheduleG/DistributedAmt00
IRS990ScheduleG/ExplanationIfNoTxt0The gaming is "raffle" type once per year permitted to be used by nonprofit organizations registered for raffles by the California Attorney General. The filers registration number is RF0012
IRS990ScheduleG/FundraisingEventInformationGrp/CashPrizesEvent1Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/CashPrizesEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/CashPrizesOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/CashPrizesTotalEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/CharitableContributionsTotAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/CharitableContriEvent1Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/CharitableContriEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/CharitableContriOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/DirectExpenseSummaryEventsAmt03380
IRS990ScheduleG/FundraisingEventInformationGrp/EntertainmentEvent1Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/EntertainmentEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/EntertainmentOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/EntertainmentTotalEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/Event1Nm0Auction
IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageEvent1Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/FoodAndBeverageTotalEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent1Amt018653
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/GrossReceiptsTotalAmt018653
IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent1Amt018653
IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/GrossRevenueTotalEventsAmt018653
IRS990ScheduleG/FundraisingEventInformationGrp/NetIncomeSummaryAmt015273
IRS990ScheduleG/FundraisingEventInformationGrp/NonCashPrizesEvent1Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/NonCashPrizesEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/NonCashPrizesOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/NonCashPrizesTotalEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/OthDirectExpnssTotalEventsAmt03380
IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent1Amt03380
IRS990ScheduleG/FundraisingEventInformationGrp/OtherDirectExpensesEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/RentFacilityCostsEvent1Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/RentFacilityCostsEvent2Amt00
IRS990ScheduleG/FundraisingEventInformationGrp/RentFcltyCostsOtherEventsAmt00
IRS990ScheduleG/FundraisingEventInformationGrp/RentFcltyCostsTotalEventsAmt00
IRS990ScheduleG/GamingInformationGrp/CashPrizesBingoAmt00
IRS990ScheduleG/GamingInformationGrp/CashPrizesOtherGamingAmt03400
IRS990ScheduleG/GamingInformationGrp/CashPrizesPullTabsAmt00
IRS990ScheduleG/GamingInformationGrp/CashPrizesTotalGamingAmt03400
IRS990ScheduleG/GamingInformationGrp/DirectExpenseSummaryGamingAmt021396
IRS990ScheduleG/GamingInformationGrp/GrossRevenueBingoAmt00
IRS990ScheduleG/GamingInformationGrp/GrossRevenueOtherGamingAmt024346
IRS990ScheduleG/GamingInformationGrp/GrossRevenuePullTabsAmt00
IRS990ScheduleG/GamingInformationGrp/GrossRevenueTotalGamingAmt024346
IRS990ScheduleG/GamingInformationGrp/NetGamingIncomeSummaryAmt02950
IRS990ScheduleG/GamingInformationGrp/NonCashPrizesBingoAmt00
IRS990ScheduleG/GamingInformationGrp/NonCashPrizesOtherGamingAmt00
IRS990ScheduleG/GamingInformationGrp/NonCashPrizesPullTabsAmt00
IRS990ScheduleG/GamingInformationGrp/NonCashPrizesTotalGamingAmt00
IRS990ScheduleG/GamingInformationGrp/OthDirectExpnssOtherGamingAmt017496
IRS990ScheduleG/GamingInformationGrp/OthDirectExpnssTotalGamingAmt017496
IRS990ScheduleG/GamingInformationGrp/OtherDirectExpensesBingoAmt00
IRS990ScheduleG/GamingInformationGrp/OtherDirectExpensesPullTabsAmt00
IRS990ScheduleG/GamingInformationGrp/RentFacilityCostsBingoAmt00
IRS990ScheduleG/GamingInformationGrp/RentFacilityCostsPullTabsAmt00
IRS990ScheduleG/GamingInformationGrp/RentFcltyCostsOtherGamingAmt0500
IRS990ScheduleG/GamingInformationGrp/RentFcltyCostsTotalGamingAmt0500
IRS990ScheduleG/GamingInformationGrp/VolunteerLaborOtherGamingInd0true
IRS990ScheduleG/GamingInformationGrp/VolunteerLaborOtherGamingPct01.00
IRS990ScheduleG/GamingManagerCompensationAmt00
IRS990ScheduleG/GamingManagerIsDirectorOfcrInd0X
IRS990ScheduleG/GamingManagerPersonNm0Brian Swift
IRS990ScheduleG/GamingManagerServicesProvTxt0Supervises raffle.
IRS990ScheduleG/GamingOtherFacilityPct01.00
IRS990ScheduleG/GamingWithNonmembersInd0false
IRS990ScheduleG/IndividualWithBooksNm0Robert Hendry
IRS990ScheduleG/LicensedInd0false
IRS990ScheduleG/LicenseSuspendedEtcInd0false
IRS990ScheduleG/MemberOfOtherEntityInd0false
IRS990ScheduleG/PersonsWithBooksUSAddress/AddressLine1Txt0PO Box 236
IRS990ScheduleG/PersonsWithBooksUSAddress/CityNm0Tiburon
IRS990ScheduleG/PersonsWithBooksUSAddress/StateAbbreviationCd0CA
IRS990ScheduleG/PersonsWithBooksUSAddress/ZIPCd094920
IRS990ScheduleG/SupplementalInformationDetail/ExplanationTxt0| PartandLinenumber:,Explanation:| Part III line 9b,The gaming is "raffle" type once per year permitted to be used by nonprofit organizations registered for raffles by the California Attorney General. The filers registration number is RF0012| Part III line 16,Supervises raffle.|
IRS990ScheduleG/SupplementalInformationDetail/FormAndLineReferenceDesc0Part III
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0| Other Revenues:, Amount:| No other revenue, $0|
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1| Grants And Similar Amounts Paid:, Amount:| Grants to charitable organizations in the United States primarily based in Marin County California., $65328|
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2| Other Expenses:, Amount:| Aministration of Foundation; Community Relations., $12106|
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3| Explanation:, BOYAmount:, EOYAmount:| Other Assets: Receivables, $17873, $2216|
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4| Explanation:, BOYAmount:, EOYAmount:| Line 26 Liabiities: Checks in Process, $22408, $21256|
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0Part I, line 8
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1Part I, line 10
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2Part I, line 16
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3Part II, line 24
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc4Part II, line 26
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0Kenneth Press Nemzer
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0Assistant Treasurer
ReturnHeader/BusinessOfficerGrp/PhoneNum04153083408
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-09-23
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0ROTARY CLUB OF TIBURON SUNSET FOUNDATION
ReturnHeader/Filer/BusinessNameControlTxt0ROTA
ReturnHeader/Filer/EIN0680458461
ReturnHeader/Filer/ForeignPhoneNum04153083408
ReturnHeader/Filer/USAddress/AddressLine1Txt0PO BOX 236
ReturnHeader/Filer/USAddress/CityNm0TIBURON
ReturnHeader/Filer/USAddress/StateAbbreviationCd0CA
ReturnHeader/Filer/USAddress/ZIPCd0949200236
ReturnHeader/ReturnTs02025-09-22T17:56:23-04:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02024-07-01
ReturnHeader/TaxPeriodEndDt02025-06-30
ReturnHeader/TaxYr02024

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