Civic Intelligence

Arboretum Foundation

990T • Fiscal year 2025 • EIN 91-0613583

Jul 01, 2024 to Jun 30, 2025 • Filed on Mar 19, 2026

Organization ProfileWWW.ARBORETUMFOUNDATION.ORG

View Organization Page

2300 Arboretum Drive ESeattle, WA 98112

(206) 325-4510

Siviq Scores

Scores are not available for this record yet.

Balance Sheet

Assets

-

No earlier filing loaded for comparison.

Net Assets

-

No earlier filing loaded for comparison.

Liabilities

-

No earlier filing loaded for comparison.

Revenue And Expenses

Revenue

-

No earlier filing loaded for comparison.

Expenses

-

No earlier filing loaded for comparison.

Net Income

-

No earlier filing loaded for comparison.

Historical Trend

Balance Sheet Trend

The highlighted filing sits inside the broader history for assets, liabilities, and net assets.

$15M$10M$5.0M$0Assets 2010: $2,592,055Liabilities 2010: $257,287Net Assets 2010: $2,334,7682010Assets 2011: $4,003,249Liabilities 2011: $194,028Net Assets 2011: $3,809,2212011Assets 2012: $3,368,320Liabilities 2012: $217,751Net Assets 2012: $3,150,5692012Assets 2013: $3,602,092Liabilities 2013: $106,730Net Assets 2013: $3,495,3622013Assets 2014: $3,809,844Liabilities 2014: $109,722Net Assets 2014: $3,700,1222014Assets 2015: $3,749,246Liabilities 2015: $98,183Net Assets 2015: $3,651,0632015Assets 2016: $3,751,772Liabilities 2016: $129,929Net Assets 2016: $3,621,8432016Assets 2017: $4,069,714Liabilities 2017: $186,569Net Assets 2017: $3,883,1452017Assets 2018: $4,285,305Liabilities 2018: $130,726Net Assets 2018: $4,154,5792018Assets 2019: $5,665,575Liabilities 2019: $99,960Net Assets 2019: $5,565,6152019Assets 2020: $5,481,104Liabilities 2020: $220,465Net Assets 2020: $5,260,6392020Assets 2021: $6,821,589Liabilities 2021: $202,085Net Assets 2021: $6,619,5042021Assets 2022: $8,009,608Liabilities 2022: $111,863Net Assets 2022: $7,897,7452022Assets 2023: $10,433,351Liabilities 2023: $256,676Net Assets 2023: $10,176,6752023Assets 2024: $11,699,187Liabilities 2024: $220,441Net Assets 2024: $11,478,7462024Assets 2025: $14,446,067Liabilities 2025: $219,471Net Assets 2025: $14,226,5962025

Latest loaded filing

2025

Assets$14,446,067
Liabilities$219,471
Net Assets$14,226,596
Open 2025 Filing

Operations Trend

Revenue, expenses, and net income across loaded years, with this filing highlighted.

$10M$5.0M$0-$5.0MExpenses 2010: $1,527,6522010Revenue 2011: $2,340,114Expenses 2011: $1,080,853Net Income 2011: $1,259,2612011Expenses 2012: $1,473,4232012Expenses 2013: $1,148,6842013Revenue 2014: $1,096,130Expenses 2014: $1,285,624Net Income 2014: -$189,4942014Revenue 2015: $1,001,511Expenses 2015: $1,051,593Net Income 2015: -$50,0822015Revenue 2016: $1,181,313Expenses 2016: $1,107,313Net Income 2016: $74,0002016Revenue 2017: $1,206,415Expenses 2017: $1,228,490Net Income 2017: -$22,0752017Revenue 2018: $1,732,743Expenses 2018: $1,509,158Net Income 2018: $223,5852018Revenue 2019: $3,193,213Expenses 2019: $1,793,010Net Income 2019: $1,400,2032019Revenue 2020: $1,607,358Expenses 2020: $1,864,205Net Income 2020: -$256,8472020Revenue 2021: $2,456,689Expenses 2021: $1,885,963Net Income 2021: $570,7262021Revenue 2022: $4,956,558Expenses 2022: $2,837,334Net Income 2022: $2,119,2242022Revenue 2023: $4,785,446Expenses 2023: $2,906,886Net Income 2023: $1,878,5602023Revenue 2024: $4,043,563Expenses 2024: $3,363,272Net Income 2024: $680,2912024Revenue 2025: $7,864,410Expenses 2025: $3,622,465Net Income 2025: $4,241,9452025

Latest loaded filing

2025

Revenue$7,864,410
Expenses$3,622,465
Net Income$4,241,945
Open 2025 Filing
Jump To
Filing Snapshot
Filing Period
Jul 1, 2024 to Jun 30, 2025
Signed
Mar 19, 2026
Return Version
2024v5.5
Mission and Program Overview

Mission

The arboretum foundation promotes, protects, and enhances the washington park arboretum for current and future generations by strengthening and building a diverse and engaged community of donors, volunteers, and advocates.

Filing and Contact Details

Filer

Filer Name
Arboretum Foundation
EIN
91-0613583
Phone
2063254510
Address
2300 ARBORETUM DRIVE E, SEATTLE, WA 98112

Signing Officer

Name
MARIBETH O'CONNOR
Title
President
Phone
2063254510
Signed
2026-03-19
Discuss with paid preparer
Yes

Preparer

Firm
Greenwood Ohlund Ps
Address
4241 21ST AVE W SUITE 400, SEATTLE, WA 98199
Preparer
Eric L Kimpton
Phone
2067821767
Raw XML Appendix86 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
IRS990T/BooksInCareOfDetail/PersonNm0MARIBETH O'CONNOR
IRS990T/BooksInCareOfDetail/PhoneNum02063254510
IRS990T/BooksInCareOfDetail/USAddress/AddressLine1Txt02300 ARBORETUM DRIVE E
IRS990T/BooksInCareOfDetail/USAddress/CityNm0SEATTLE
IRS990T/BooksInCareOfDetail/USAddress/StateAbbreviationCd0WA
IRS990T/BooksInCareOfDetail/USAddress/ZIPCd098112
IRS990T/BookValueAssetsEOYAmt014446067
IRS990T/CharitableContributionsDedAmt00
IRS990T/ForeignAccountsQuestionInd00
IRS990T/ForeignTrustQuestionInd00
IRS990T/Form990TScheduleAAttachedCnt01
IRS990T/Organization501cCorporationInd0X
IRS990T/Organization501IndicatorGrp/Organization501cTypeTxt0c3
IRS990T/Organization501IndicatorGrp/Organization501Ind0X
IRS990T/OtherTaxesAmt00
IRS990T/PaidTaxLiabilityAmt00
IRS990T/Post2017NOLCarryoverGrp/AvlblPost2017NOLCarryoverAmt022
IRS990T/Post2017NOLCarryoverGrp/PrincipalBusinessActivityCd0541800
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/AdvertisedPeriodicalNameTxt0ARBORETUM BULLETIN
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/AdvertisingGainLossAmt01332
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/DirectAdvertisingCostAmt00
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/ExcessReadershipCostsAmt02400
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/ExcessReadershipCostsDedAmt01332
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/GrossAdvertisingIncomeAmt01332
IRS990TScheduleA/AdvertisingIncmPeriodicalGrp/ReadershipCostsAmt02400
IRS990TScheduleA/NetAdvertisingIncomeAmt01332
IRS990TScheduleA/NetOperatingLossDeductionAmt00
IRS990TScheduleA/PrincipalBusinessActivityCd0541800
IRS990TScheduleA/SequenceReferenceNum01
IRS990TScheduleA/SequenceTotalNum01
IRS990TScheduleA/TotalAllocableDeductionsAmt00
IRS990TScheduleA/TotalCtrlOrgDeductionAmt00
IRS990TScheduleA/TotalCtrlOrgPymtGrossIncmAmt00
IRS990TScheduleA/TotalDeductionsAmt01332
IRS990TScheduleA/TotalDeductionSetAsidesAmt00
IRS990TScheduleA/TotalDirectAdvertisingCostAmt00
IRS990TScheduleA/TotalDividendsReceivedDedAmt00
IRS990TScheduleA/TotalGrossAdvertisingIncomeAmt01332
IRS990TScheduleA/TotalGrossDebtFinancedIncmAmt00
IRS990TScheduleA/TotalInvestmentIncomeAmt00
IRS990TScheduleA/TotalRentDeductionsAmt00
IRS990TScheduleA/TotalRentIncomeAmt00
IRS990TScheduleA/TotalUnrelatedBusinessCompAmt00
IRS990TScheduleA/TotExcessReadershipCostsDedAmt01332
IRS990TScheduleA/TotNetUnrltTrdBusIncmAmt01332
IRS990TScheduleA/TotUnrltTrdBusIncmAmt01332
IRS990TScheduleA/TotUnrltTrdBusIncmExpnssAmt00
IRS990TScheduleA/TradeOrBusinessDesc0ARBORETUM BULLETIN
IRS990TScheduleA/UBIBeforeNOLDedAmt00
IRS990T/SpecificDeductionAmt01000
IRS990T/SubsidiaryCorporationInd00
IRS990T/TaxableCorporationAmt00
IRS990T/TaxLessCreditsAmt00
IRS990T/TotalDeductionAmt01000
IRS990T/TotalTaxAmt00
IRS990T/TotalTaxComputationAmt00
IRS990T/TotalUBTIAmt00
IRS990T/TotalUBTIComputedAmt00
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0MARIBETH O'CONNOR
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0PRESIDENT
ReturnHeader/BusinessOfficerGrp/PhoneNum02063254510
ReturnHeader/BusinessOfficerGrp/SignatureDt02026-03-19
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0ARBORETUM FOUNDATION
ReturnHeader/Filer/BusinessNameControlTxt0ARBO
ReturnHeader/Filer/EIN0910613583
ReturnHeader/Filer/PhoneNum02063254510
ReturnHeader/Filer/USAddress/AddressLine1Txt02300 ARBORETUM DRIVE E
ReturnHeader/Filer/USAddress/CityNm0SEATTLE
ReturnHeader/Filer/USAddress/StateAbbreviationCd0WA
ReturnHeader/Filer/USAddress/ZIPCd098112
ReturnHeader/IRSResponsiblePrtyInfoCurrInd01
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0910873571
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0GREENWOOD OHLUND PS
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt04241 21ST AVE W SUITE 400
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0SEATTLE
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0WA
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd098199
ReturnHeader/PreparerPersonGrp/PhoneNum02067821767
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0ERIC L KIMPTON
ReturnHeader/ReturnTs02026-03-20T15:08:14-05:00
ReturnHeader/ReturnTypeCd0990T
ReturnHeader/TaxPeriodBeginDt02024-07-01
ReturnHeader/TaxPeriodEndDt02025-06-30
ReturnHeader/TaxYr02024

Document Assets

No mirrored PDF or thumbnail assets are attached yet.

Filings

Displayed year

2025 • Form 990TFacts available. Structured filing facts are available, but richer extracted sections are limited.

Open filing
Assets
-
Liabilities
-
Net assets
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Revenue
-
Expenses
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Net income
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Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$14.4$0.22$14.2$7.86$3.62$4.24
2025Facts available. Structured filing facts are available, but richer extracted sections are limited.
2024XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$11.7$0.22$11.5$4.04$3.36$0.68
2023XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$10.4$0.26$10.2$4.79$2.91$1.88
2022Detailed filing. Detailed filing data is available for this year.$8.01$0.11$7.90$4.96$2.84$2.12
2021XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$6.82$0.20$6.62$2.46$1.89$0.57
2020Detailed filing. Detailed filing data is available for this year.$5.48$0.22$5.26$1.61$1.86$0.26
2019Detailed filing. Detailed filing data is available for this year.$5.67$0.10$5.57$3.19$1.79$1.40
2018Detailed filing. Detailed filing data is available for this year.$4.29$0.13$4.15$1.73$1.51$0.22
2017Detailed filing. Detailed filing data is available for this year.$4.07$0.19$3.88$1.21$1.23$0.02
2016Detailed filing. Detailed filing data is available for this year.$3.75$0.13$3.62$1.18$1.11$0.07
2015XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$3.75$0.10$3.65$1.00$1.05$0.05
2014Detailed filing. Detailed filing data is available for this year.$3.81$0.11$3.70$1.10$1.29$0.19
2013Facts available. Structured filing facts are available, but richer extracted sections are limited.$3.60$0.11$3.50$1.15
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$3.37$0.22$3.15$1.47
2011Summary only. Only limited summary data is available for this year.$4.00$0.19$3.81$2.34$1.08$1.26
2010Facts available. Structured filing facts are available, but richer extracted sections are limited.$2.59$0.26$2.33$1.53