INATURALIST: Form 990, tax year 2025

View the entire original 990 at ProPublica ↗

Organization
INATURALIST (EIN 92-1296468)
Tax period
2025-01-01 to 2025-12-31
Filed
2026-09-15
IRS object ID
202632589349301113
Schema version
2025v4.2
Source
Download XML · Original 990 at ProPublica

Every field in the e-filed return. Faint text is the IRS element name, for citing.

Return header ReturnHeader

FieldValueIRS element (for citing)
Return2026-09-15T11:23:01-05:00ReturnTs
Tax Period End2025-12-31TaxPeriodEndDt

Preparer Firm PreparerFirmGrp

FieldValueIRS element (for citing)
Preparer Firm EIN946214841PreparerFirmEIN

Preparer Firm Name PreparerFirmName

FieldValueIRS element (for citing)
Business Name Line1Armanino Advisory LLCBusinessNameLine1Txt

Preparer US Address PreparerUSAddress

FieldValueIRS element (for citing)
Address Line12700 Camino Ramon Ste 350AddressLine1Txt
CitySan RamonCityNm
State AbbreviationCAStateAbbreviationCd
ZIP945835004ZIPCd
FieldValueIRS element (for citing)
Return Type990ReturnTypeCd
Tax Period Begin2025-01-01TaxPeriodBeginDt

Filer Filer

FieldValueIRS element (for citing)
EIN921296468EIN

Business Name BusinessName

FieldValueIRS element (for citing)
Business Name Line1iNaturalistBusinessNameLine1Txt
FieldValueIRS element (for citing)
Business Name ControlINATBusinessNameControlTxt
Phone4153206269PhoneNum

US Address USAddress

FieldValueIRS element (for citing)
Address Line11020 B StreetAddressLine1Txt
CitySan RafaelCityNm
State AbbreviationCAStateAbbreviationCd
ZIP94901ZIPCd

Business Officer BusinessOfficerGrp

FieldValueIRS element (for citing)
PersonScott LoariePersonNm
Person TitleExecutive DirectorPersonTitleTxt
Phone4152781220PhoneNum
Signature2026-09-11SignatureDt
Discuss With Paid PreparerYes (1)DiscussWithPaidPreparerInd

Preparer Person PreparerPersonGrp

FieldValueIRS element (for citing)
Preparer PersonKaty BrownPreparerPersonNm
PTINP00650274PTIN
Phone9257902600PhoneNum
Preparation2026-09-11PreparationDt
FieldValueIRS element (for citing)
Tax2025TaxYr

Form 990 IRS990

FieldValueIRS element (for citing)
Principal OfficerScott LoariePrincipalOfficerNm

US Address USAddress

FieldValueIRS element (for citing)
Address Line11020 B StreetAddressLine1Txt
CitySan RafaelCityNm
State AbbreviationCAStateAbbreviationCd
ZIP94901ZIPCd
FieldValueIRS element (for citing)
Gross Receipts$9,011,958GrossReceiptsAmt
Group Return For Affiliates0GroupReturnForAffiliatesInd
Organization501c3Yes (X)Organization501c3Ind
Website Addresswww.inaturalist.orgWebsiteAddressTxt
Type Of Organization CorpYes (X)TypeOfOrganizationCorpInd
Formation2022FormationYr
Legal Domicile StateCALegalDomicileStateCd
Activity Or MissionTo connect people to nature & advance biodiversity science & conservationActivityOrMissionDesc
Voting Members Governing Body9VotingMembersGoverningBodyCnt
Voting Members Independent8VotingMembersIndependentCnt
Total Employee21TotalEmployeeCnt
Total Volunteers1508033TotalVolunteersCnt
Total Gross UBI$0TotalGrossUBIAmt
Net Unrelated Bus Txbl Incm$0NetUnrelatedBusTxblIncmAmt
PY Contributions Grants$4,436,376PYContributionsGrantsAmt
CY Contributions Grants$8,580,779CYContributionsGrantsAmt
PY Program Service Revenue$100,974PYProgramServiceRevenueAmt
CY Program Service Revenue$172,178CYProgramServiceRevenueAmt
PY Investment Income$173,470PYInvestmentIncomeAmt
CY Investment Income$264,681CYInvestmentIncomeAmt
PY Other Revenue$540PYOtherRevenueAmt
CY Other Revenue-$5,680CYOtherRevenueAmt
PY Total Revenue$4,711,360PYTotalRevenueAmt
CY Total Revenue$9,011,958CYTotalRevenueAmt
PY Grants And Similar Paid$0PYGrantsAndSimilarPaidAmt
CY Grants And Similar Paid$0CYGrantsAndSimilarPaidAmt
PY Benefits Paid To Members$0PYBenefitsPaidToMembersAmt
CY Benefits Paid To Members$0CYBenefitsPaidToMembersAmt
PY Salaries Comp Emp Bnft Paid$2,129,224PYSalariesCompEmpBnftPaidAmt
CY Salaries Comp Emp Bnft Paid$2,791,962CYSalariesCompEmpBnftPaidAmt
PY Total Prof Fndrsng Expns$0PYTotalProfFndrsngExpnsAmt
CY Total Prof Fndrsng Expns$26,900CYTotalProfFndrsngExpnsAmt
CY Total Fundraising Expense$612,102CYTotalFundraisingExpenseAmt
PY Other Expenses$922,353PYOtherExpensesAmt
CY Other Expenses$1,138,500CYOtherExpensesAmt
PY Total Expenses$3,051,577PYTotalExpensesAmt
CY Total Expenses$3,957,362CYTotalExpensesAmt
PY Revenues Less Expenses$1,659,783PYRevenuesLessExpensesAmt
CY Revenues Less Expenses$5,054,596CYRevenuesLessExpensesAmt
Total Assets BOY$5,932,237TotalAssetsBOYAmt
Total Assets EOY$12,269,983TotalAssetsEOYAmt
Total Liabilities BOY$105,184TotalLiabilitiesBOYAmt
Total Liabilities EOY$1,388,334TotalLiabilitiesEOYAmt
Net Assets Or Fund Balances BOY$5,827,053NetAssetsOrFundBalancesBOYAmt
Net Assets Or Fund Balances EOY$10,881,649NetAssetsOrFundBalancesEOYAmt
Info In Schedule O Part IIIYes (X)InfoInScheduleOPartIIIInd
MissioniNaturalist's mission is to connect people to nature and advance biodiversity science and conservation. Its vision is a world where everyone can understand and sustain biodiversity through the practice of observing wild organisms and sharing information about them.MissionDesc
Significant New Program SrvcYes (1)SignificantNewProgramSrvcInd
Significant Change0SignificantChangeInd
Expense$2,974,115ExpenseAmt
Revenue$172,178RevenueAmt
DesciNaturalist connects people to nature through open-source technology that enables individuals worldwide to record and learn about biodiversity while contributing to science and conservation. In 2025, iNaturalist advanced its exempt purpose across community engagement, scientific discovery, and global conservation:Community Engagement & Global Reach-Supported over 1.4 million active individuals who directly contributed biodiversity observations or verified identifications for others.-Engaged approximately 2 million monthly active users across the iNaturalist and Seek mobile applications, and over 4 million monthly website visitors.-Surpassed 250 million total verifiable global biodiversity observations recorded on the platform to date.Scientific Innovation & Open Data Access-Released 8 updated computer vision models and location-based geomodels assisting in the identification of over 110,000 taxa.-Launched the open-access iNaturalist Open Range Map Dataset, using machine learning across millions of observations to generate species range maps for over 100,000 taxa.-Enabled scientific research, resulting in over 1,100 peer-reviewed scientific publications citing or using iNaturalist data in 2025.Applied Conservation ImpactsiNaturalist data serves as vital infrastructure used by researchers, land managers, and conservationists to discover new species, track invasive and endangered taxa, refine species distributions, support protected area management, and inform climate change response.Desc
Total Program Service Expenses$2,974,115TotalProgramServiceExpensesAmt
Described In Section501c3Yes (1)DescribedInSection501c3Ind
Schedule B RequiredYes (1)ScheduleBRequiredInd
Political Campaign Acty0PoliticalCampaignActyInd
Lobbying Activities0LobbyingActivitiesInd
Subject To Proxy Tax0SubjectToProxyTaxInd
Donor Advised Fund0DonorAdvisedFundInd
Conservation Easements0ConservationEasementsInd
Collections Of Art0CollectionsOfArtInd
Credit Counseling0CreditCounselingInd
Donor Rstr Or Quasi EndowmentsYes (1)DonorRstrOrQuasiEndowmentsInd
Report Land Building EquipmentYes (1)ReportLandBuildingEquipmentInd
Report Investments Other Sec0ReportInvestmentsOtherSecInd
Report Program Related Invst0ReportProgramRelatedInvstInd
Report Other Assets0ReportOtherAssetsInd
Report Other Liabilities0ReportOtherLiabilitiesInd
Include FIN48 FootnoteYes (1)IncludeFIN48FootnoteInd
Independent Audit Fincl StmtYes (1)IndependentAuditFinclStmtInd
Consolidated Audit Fincl Stmt0ConsolidatedAuditFinclStmtInd
School Operating0SchoolOperatingInd
Foreign Office0ForeignOfficeInd
Foreign Activities0ForeignActivitiesInd
More Than5000 K To Org0MoreThan5000KToOrgInd
More Than5000 K To Individuals0MoreThan5000KToIndividualsInd
Professional FundraisingYes (1)ProfessionalFundraisingInd
Fundraising Activities0FundraisingActivitiesInd
Gaming Activities0GamingActivitiesInd
Operate Hospital0OperateHospitalInd
Grants To Organizations0GrantsToOrganizationsInd
Grants To Individuals0GrantsToIndividualsInd
Schedule J RequiredYes (1)ScheduleJRequiredInd
Tax Exempt Bonds0TaxExemptBondsInd
Engaged In Excess Benefit Trans0EngagedInExcessBenefitTransInd
PY Excess Benefit Trans0PYExcessBenefitTransInd
Loan Outstanding0LoanOutstandingInd
Grant To Related Person0GrantToRelatedPersonInd
Business Rln With Org Mem0BusinessRlnWithOrgMemInd
Business Rln With Fam Mem0BusinessRlnWithFamMemInd
Business Rln With35 Ctrl Ent0BusinessRlnWith35CtrlEntInd
Deductible Non Cash Contri0DeductibleNonCashContriInd
Deductible Art Contribution0DeductibleArtContributionInd
Terminate Operations0TerminateOperationsInd
Partial Liquidation0PartialLiquidationInd
Disregarded Entity0DisregardedEntityInd
Related Entity0RelatedEntityInd
Related Organization Ctrl Ent0RelatedOrganizationCtrlEntInd
Trnsfr Exmpt Non Chrtbl Rltd Org0TrnsfrExmptNonChrtblRltdOrgInd
Activities Conducted Prtshp0ActivitiesConductedPrtshpInd
Schedule O RequiredYes (1)ScheduleORequiredInd
IRP Document8IRPDocumentCnt
IRP Document W2 G0IRPDocumentW2GCnt
Backup Wthld ComplianceYes (1)BackupWthldComplianceInd
Employee21EmployeeCnt
Employment Tax Returns FiledYes (1)EmploymentTaxReturnsFiledInd
Unrelated Bus Incm Over Limit0UnrelatedBusIncmOverLimitInd
Foreign Financial Account0ForeignFinancialAccountInd
Prohibited Tax Shelter Trans0ProhibitedTaxShelterTransInd
Taxable Party Notification0TaxablePartyNotificationInd
Nondeductible Contributions0NondeductibleContributionsInd
Quid Pro Quo Contributions0QuidProQuoContributionsInd
Form8282 Property Disposed Of0Form8282PropertyDisposedOfInd
Rcv Fnds To Pay Prsnl Bnft Cntrct0RcvFndsToPayPrsnlBnftCntrctInd
Pay Premiums Prsnl Bnft Cntrct0PayPremiumsPrsnlBnftCntrctInd
Indoor Tanning Services0IndoorTanningServicesInd
Subj To Tax Rmnrtn Ex Prcht Pymt0SubjToTaxRmnrtnExPrchtPymtInd
Subject To Excs Tax Net Invst Inc0SubjectToExcsTaxNetInvstIncInd
Info In Schedule O Part VIYes (X)InfoInScheduleOPartVIInd
Governing Body Voting Members9GoverningBodyVotingMembersCnt
Independent Voting Member8IndependentVotingMemberCnt
Family Or Business Rln0FamilyOrBusinessRlnInd
Delegation Of Mgmt Duties0DelegationOfMgmtDutiesInd
Change To Org Documents0ChangeToOrgDocumentsInd
Material Diversion Or Misuse0MaterialDiversionOrMisuseInd
Members Or Stockholders0MembersOrStockholdersInd
Election Of Board Members0ElectionOfBoardMembersInd
Decisions Subject To Approva0DecisionsSubjectToApprovaInd
Minutes Of Governing BodyYes (1)MinutesOfGoverningBodyInd
Minutes Of Committees0MinutesOfCommitteesInd
Officer Mailing Address0OfficerMailingAddressInd
Local Chapters0LocalChaptersInd
Form990 Provided To Gvrn BodyYes (1)Form990ProvidedToGvrnBodyInd
Conflict Of Interest PolicyYes (1)ConflictOfInterestPolicyInd
Annual Disclosure Covered PrsnYes (1)AnnualDisclosureCoveredPrsnInd
Regular Monitoring EnfrcYes (1)RegularMonitoringEnfrcInd
Whistleblower PolicyYes (1)WhistleblowerPolicyInd
Document Retention PolicyYes (1)DocumentRetentionPolicyInd
Compensation Process CEOYes (1)CompensationProcessCEOInd
Compensation Process OtherYes (1)CompensationProcessOtherInd
Investment In Joint Venture0InvestmentInJointVentureInd
States Where Copy Of Return Is FldCAStatesWhereCopyOfReturnIsFldCd
Own WebsiteYes (X)OwnWebsiteInd
Upon RequestYes (X)UponRequestInd

Books In Care Of Detail BooksInCareOfDetail

Business Name BusinessName

FieldValueIRS element (for citing)
Business Name Line1Adrienne Pettit Director of Finance & HR CFOBusinessNameLine1Txt
FieldValueIRS element (for citing)
Phone4153206269PhoneNum

US Address USAddress

FieldValueIRS element (for citing)
Address Line11020 B StreetAddressLine1Txt
CitySan RafaelCityNm
State AbbreviationCAStateAbbreviationCd
ZIP94901ZIPCd

Form990 Part VII Section A Form990PartVIISectionAGrp (19 entries)

TitleTitleTxtAverage Hours Per WeekAverageHoursPerWeekRtIndividual Trustee Or DirectorIndividualTrusteeOrDirectorIndOfficerOfficerIndReportable Comp From OrgReportableCompFromOrgAmtReportable Comp From Rltd OrgReportableCompFromRltdOrgAmtOther CompensationOtherCompensationAmtKey EmployeeKeyEmployeeIndHighest Compensated EmployeeHighestCompensatedEmployeeInd
Scott Loarie
Executive Director, Secretary40.00Yes (X)Yes (X)$193,491$0$36,012
Dick Raines
Board Chair, President4.00Yes (X)Yes (X)$0$0$0
Catherine Chang
Director2.00Yes (X)$0$0$0
Nick Grandy
Director2.00Yes (X)$0$0$0
Kelly Jin
Director2.00Yes (X)$0$0$0
Lucas Joppa
Director2.00Yes (X)$0$0$0
Aileen Lee
Director2.00Yes (X)$0$0$0
Amber Mace
Director2.00Yes (X)$0$0$0
Marcia Marsh
Director2.00Yes (X)$0$0$0
Dan Rademacher
Director (Thru 10/25)2.00Yes (X)$0$0$0
Jason Walthall
Head of Admin., CFO/Treasurer20.00Yes (X)$86,742$0$4,495
Carrie Seltzer
Head of Engagement40.00$187,786$0$20,160Yes (X)
Jeanne Braha
Head of Development40.00$164,015$0$15,709Yes (X)
Kirk Van Gorkom
Head of Engineering (thru 10/25)40.00$150,905$0$22,548Yes (X)
Patrick Leary
SR. Staff Software and Devops Eng.40.00$195,472$0$18,508Yes (X)
Ken-Ichi Ueda
Co-Founder, Staff Software Engineer40.00$181,773$0$16,823Yes (X)
Abhas Misraraj
Staff UI/UX Designer40.00$148,283$0$16,597Yes (X)
Dorothea Skaff
Dir. of Dig. Fundraising & Engmt40.00$135,679$0$26,874Yes (X)
Alison Young
Director of Outreach Programs40.00$129,399$0$20,894Yes (X)
FieldValueIRS element (for citing)
Total Reportable Comp From Org$1,573,545TotalReportableCompFromOrgAmt
Tot Reportable Comp Rltd Org$0TotReportableCompRltdOrgAmt
Total Other Compensation$198,620TotalOtherCompensationAmt
Indiv Rcvd Greater Than100 K12IndivRcvdGreaterThan100KCnt
Former Ofcr Employees Listed0FormerOfcrEmployeesListedInd
Total Comp Greater Than150 KYes (1)TotalCompGreaterThan150KInd
Compensation From Other Srcs0CompensationFromOtherSrcsInd

Contractor Compensation ContractorCompensationGrp (2 entries)

Address Line1ContractorAddress/ForeignAddress/AddressLine1TxtCityContractorAddress/ForeignAddress/CityNmCountryContractorAddress/ForeignAddress/CountryCdServicesServicesDescCompensationCompensationAmt
Adansonia Tech
94 Avenue du General LeclercSaintMaurdesFossesFRTechnical Consulting$196,569
Johannes Klein
Auf der Aue 5KraichtalGMTechnical Consulting$166,593
FieldValueIRS element (for citing)
Cntrct Rcvd Greater Than100 K2CntrctRcvdGreaterThan100KCnt
Government Grants$69,141GovernmentGrantsAmt
All Other Contributions$8,511,638AllOtherContributionsAmt
Total Contributions$8,580,779TotalContributionsAmt

Program Service Revenue ProgramServiceRevenueGrp (2 entries)

DescDescBusinessBusinessCdTotal Revenue ColumnTotalRevenueColumnAmtRelated Or Exempt Func IncomeRelatedOrExemptFuncIncomeAmt
Consulting Services813312$170,131$170,131
Corporate Sponsorships813312$2,047$2,047
FieldValueIRS element (for citing)
Total Program Service Revenue$172,178TotalProgramServiceRevenueAmt

Investment Income InvestmentIncomeGrp

FieldValueIRS element (for citing)
Total Revenue Column$264,681TotalRevenueColumnAmt
Exclusion$264,681ExclusionAmt

Royalties Revenue RoyaltiesRevenueGrp

FieldValueIRS element (for citing)
Total Revenue Column$3,293TotalRevenueColumnAmt
Exclusion$3,293ExclusionAmt

Other Revenue Misc OtherRevenueMiscGrp (2 entries)

DescDescBusinessBusinessCdTotal Revenue ColumnTotalRevenueColumnAmtExclusionExclusionAmt
Other Income900099$241$241
Loss on Curr. Exchange900099-$9,214-$9,214
FieldValueIRS element (for citing)
Other Revenue Total-$8,973OtherRevenueTotalAmt

Total Revenue TotalRevenueGrp

FieldValueIRS element (for citing)
Total Revenue Column$9,011,958TotalRevenueColumnAmt
Related Or Exempt Func Income$172,178RelatedOrExemptFuncIncomeAmt
Unrelated Business Revenue$0UnrelatedBusinessRevenueAmt
Exclusion$259,001ExclusionAmt
FieldValueIRS element (for citing)
Info In Schedule O Part IXYes (X)InfoInScheduleOPartIXInd

Comp Current Ofcr Directors CompCurrentOfcrDirectorsGrp

FieldValueIRS element (for citing)
Total$881,863TotalAmt
Program Services$447,082ProgramServicesAmt
Management And General$190,496ManagementAndGeneralAmt
Fundraising$244,285FundraisingAmt

Other Salaries And Wages OtherSalariesAndWagesGrp

FieldValueIRS element (for citing)
Total$1,538,553TotalAmt
Program Services$1,464,785ProgramServicesAmt
Management And General$28,110ManagementAndGeneralAmt
Fundraising$45,658FundraisingAmt

Pension Plan Contributions PensionPlanContributionsGrp

FieldValueIRS element (for citing)
Total$62,568TotalAmt
Program Services$57,614ProgramServicesAmt
Management And General$968ManagementAndGeneralAmt
Fundraising$3,986FundraisingAmt

Other Employee Benefits OtherEmployeeBenefitsGrp

FieldValueIRS element (for citing)
Total$125,863TotalAmt
Program Services$87,780ProgramServicesAmt
Management And General$17,117ManagementAndGeneralAmt
Fundraising$20,966FundraisingAmt

Payroll Taxes PayrollTaxesGrp

FieldValueIRS element (for citing)
Total$183,115TotalAmt
Program Services$133,032ProgramServicesAmt
Management And General$19,458ManagementAndGeneralAmt
Fundraising$30,625FundraisingAmt

Fees For Services Accounting FeesForServicesAccountingGrp

FieldValueIRS element (for citing)
Total$51,715TotalAmt
Management And General$51,715ManagementAndGeneralAmt

Fees For Services Prof Fundraising FeesForServicesProfFundraising

FieldValueIRS element (for citing)
Total$26,900TotalAmt
Fundraising$26,900FundraisingAmt

Fees For Services Other FeesForServicesOtherGrp

FieldValueIRS element (for citing)
Total$500,058TotalAmt
Program Services$458,636ProgramServicesAmt
Management And General$8,611ManagementAndGeneralAmt
Fundraising$32,811FundraisingAmt

Advertising AdvertisingGrp

FieldValueIRS element (for citing)
Total$15,689TotalAmt
Program Services$15,305ProgramServicesAmt
Fundraising$384FundraisingAmt

Office Expenses OfficeExpensesGrp

FieldValueIRS element (for citing)
Total$67,378TotalAmt
Program Services$793ProgramServicesAmt
Management And General$2,521ManagementAndGeneralAmt
Fundraising$64,064FundraisingAmt

Information Technology InformationTechnologyGrp

FieldValueIRS element (for citing)
Total$342,018TotalAmt
Program Services$223,606ProgramServicesAmt
Management And General$7,255ManagementAndGeneralAmt
Fundraising$111,157FundraisingAmt

Occupancy OccupancyGrp

FieldValueIRS element (for citing)
Total$8,900TotalAmt
Program Services$4,850ProgramServicesAmt
Management And General$4,050ManagementAndGeneralAmt

Travel TravelGrp

FieldValueIRS element (for citing)
Total$102,760TotalAmt
Program Services$63,142ProgramServicesAmt
Management And General$16,408ManagementAndGeneralAmt
Fundraising$23,210FundraisingAmt

Conferences Meetings ConferencesMeetingsGrp

FieldValueIRS element (for citing)
Total$15,816TotalAmt
Program Services$11,877ProgramServicesAmt
Management And General$3,887ManagementAndGeneralAmt
Fundraising$52FundraisingAmt

Depreciation Depletion DepreciationDepletionGrp

FieldValueIRS element (for citing)
Total$3,598TotalAmt
Program Services$3,598ProgramServicesAmt

Insurance InsuranceGrp

FieldValueIRS element (for citing)
Total$14,800TotalAmt
Management And General$14,800ManagementAndGeneralAmt

Other Expenses OtherExpensesGrp (2 entries)

DescDescTotalTotalAmtFundraisingFundraisingAmtProgram ServicesProgramServicesAmtManagement And GeneralManagementAndGeneralAmt
Event Expenses$8,004$8,004
Employee Training$7,764$2,015$5,749

Total Functional Expenses TotalFunctionalExpensesGrp

FieldValueIRS element (for citing)
Total$3,957,362TotalAmt
Program Services$2,974,115ProgramServicesAmt
Management And General$371,145ManagementAndGeneralAmt
Fundraising$612,102FundraisingAmt

Cash Non Interest Bearing CashNonInterestBearingGrp

FieldValueIRS element (for citing)
BOY$317,257BOYAmt
EOY$690,193EOYAmt

Savings And Temp Cash Invst SavingsAndTempCashInvstGrp

FieldValueIRS element (for citing)
BOY$5,443,612BOYAmt
EOY$9,495,674EOYAmt

Pledges And Grants Receivable PledgesAndGrantsReceivableGrp

FieldValueIRS element (for citing)
BOY$131,652BOYAmt
EOY$2,015,055EOYAmt

Accounts Receivable AccountsReceivableGrp

FieldValueIRS element (for citing)
BOY$772BOYAmt
EOY$20,381EOYAmt

Prepaid Expenses Defrd Charges PrepaidExpensesDefrdChargesGrp

FieldValueIRS element (for citing)
BOY$17,425BOYAmt
EOY$30,759EOYAmt
FieldValueIRS element (for citing)
Land Bldg Equip Cost Or Other Bss$26,229LandBldgEquipCostOrOtherBssAmt
Land Bldg Equip Accum Deprec$8,308LandBldgEquipAccumDeprecAmt

Land Bldg Equip Basis Net LandBldgEquipBasisNetGrp

FieldValueIRS element (for citing)
BOY$21,519BOYAmt
EOY$17,921EOYAmt

Total Assets TotalAssetsGrp

FieldValueIRS element (for citing)
BOY$5,932,237BOYAmt
EOY$12,269,983EOYAmt

Accounts Payable Accr Expnss AccountsPayableAccrExpnssGrp

FieldValueIRS element (for citing)
BOY$105,184BOYAmt
EOY$170,381EOYAmt

Deferred Revenue DeferredRevenueGrp

FieldValueIRS element (for citing)
EOY$1,217,953EOYAmt

Total Liabilities TotalLiabilitiesGrp

FieldValueIRS element (for citing)
BOY$105,184BOYAmt
EOY$1,388,334EOYAmt
FieldValueIRS element (for citing)
Organization Follows FASB117Yes (X)OrganizationFollowsFASB117Ind

No Donor Restriction Net Assets NoDonorRestrictionNetAssetsGrp

FieldValueIRS element (for citing)
BOY$4,786,435BOYAmt
EOY$8,502,456EOYAmt

Donor Restriction Net Assets DonorRestrictionNetAssetsGrp

FieldValueIRS element (for citing)
BOY$1,040,618BOYAmt
EOY$2,379,193EOYAmt

Total Net Assets Fund Balance TotalNetAssetsFundBalanceGrp

FieldValueIRS element (for citing)
BOY$5,827,053BOYAmt
EOY$10,881,649EOYAmt

Tot Liab Net Assets Fund Balance TotLiabNetAssetsFundBalanceGrp

FieldValueIRS element (for citing)
BOY$5,932,237BOYAmt
EOY$12,269,983EOYAmt
FieldValueIRS element (for citing)
Reconcilation Revenue Expnss$5,054,596ReconcilationRevenueExpnssAmt
Other Changes In Net Assets$0OtherChangesInNetAssetsAmt
Method Of Accounting AccrualYes (X)MethodOfAccountingAccrualInd
Accountant Compile Or Review0AccountantCompileOrReviewInd
FS AuditedYes (1)FSAuditedInd

FS Audited Basis FSAuditedBasisGrp

FieldValueIRS element (for citing)
Separate Basis Fincl StmtYes (X)SeparateBasisFinclStmtInd
FieldValueIRS element (for citing)
Audit CommitteeYes (1)AuditCommitteeInd
Federal Grant Audit Required0FederalGrantAuditRequiredInd

Schedule A IRS990ScheduleA

FieldValueIRS element (for citing)
Public Organization170Yes (X)PublicOrganization170Ind

Gifts Grants Contri Rcvd170 GiftsGrantsContriRcvd170Grp

FieldValueIRS element (for citing)
Current Tax Year Minus2 Years$4,987,614CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$4,436,376CurrentTaxYearMinus1YearAmt
Current Tax Year$8,580,779CurrentTaxYearAmt
Total$18,004,769TotalAmt

Total Calendar Year170 TotalCalendarYear170Grp

FieldValueIRS element (for citing)
Current Tax Year Minus2 Years$4,987,614CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$4,436,376CurrentTaxYearMinus1YearAmt
Current Tax Year$8,580,779CurrentTaxYearAmt
Total$18,004,769TotalAmt
FieldValueIRS element (for citing)
Substantial Contributors Tot$6,330,809SubstantialContributorsTotAmt
Public Support Total170$11,673,960PublicSupportTotal170Amt

Gross Investment Income170 GrossInvestmentIncome170Grp

FieldValueIRS element (for citing)
Current Tax Year Minus2 Years$58,433CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$180,258CurrentTaxYearMinus1YearAmt
Current Tax Year$267,974CurrentTaxYearAmt
Total$506,665TotalAmt
FieldValueIRS element (for citing)
Total Support$18,511,434TotalSupportAmt
Gross Receipts Rltd Activities$780,964GrossReceiptsRltdActivitiesAmt
First5 Years170Yes (X)First5Years170Ind

Schedule B IRS990ScheduleB

Contributor Information ContributorInformationGrp

FieldValueIRS element (for citing)
ContributorRESTRICTEDContributorNum

Contributor Business Name ContributorBusinessName

FieldValueIRS element (for citing)
Business Name Line1RESTRICTEDBusinessNameLine1

Contributor US Address ContributorUSAddress

FieldValueIRS element (for citing)
Address Line1RESTRICTEDAddressLine1
Address Line2RESTRICTEDAddressLine2
CityRESTRICTEDCity
StateRESTRICTEDState
ZIP CodeRESTRICTEDZIPCode
FieldValueIRS element (for citing)
Total ContributionsRESTRICTEDTotalContributionsAmt

Schedule D IRS990ScheduleD

CY Endwmt Fund CYEndwmtFundGrp

FieldValueIRS element (for citing)
Contributions$1,000ContributionsAmt
Investment Earnings Or Losses$18InvestmentEarningsOrLossesAmt
End Year Balance$1,018EndYearBalanceAmt
FieldValueIRS element (for citing)
Prmnnt Endowment Balance EOY0.98232PrmnntEndowmentBalanceEOYPct
Term Endowment Balance EOY0.01768TermEndowmentBalanceEOYPct
Endowments Held Unrelated Org0EndowmentsHeldUnrelatedOrgInd
Endowments Held Related Org0EndowmentsHeldRelatedOrgInd

Equipment EquipmentGrp

FieldValueIRS element (for citing)
Other Cost Or Other Basis$26,229OtherCostOrOtherBasisAmt
Depreciation$8,308DepreciationAmt
Book Value$17,921BookValueAmt
FieldValueIRS element (for citing)
Total Book Value Land Buildings$17,921TotalBookValueLandBuildingsAmt
Footnote TextYes (X)FootnoteTextInd
Total Rev Etc Audited Fincl Stmt$10,443,453TotalRevEtcAuditedFinclStmtAmt
Donated Services And Use Fclts$1,431,495DonatedServicesAndUseFcltsAmt
Revenue Not Reported$1,431,495RevenueNotReportedAmt
Revenue Subtotal$9,011,958RevenueSubtotalAmt
Revenue Not Reported Fincl Stmt$0RevenueNotReportedFinclStmtAmt
Total Revenue Per Form990$9,011,958TotalRevenuePerForm990Amt
Tot Expns Etc Audited Fincl Stmt$5,388,857TotExpnsEtcAuditedFinclStmtAmt
Donated Services Use Fclts$1,431,495DonatedServicesUseFcltsAmt
Expenses Not Reported$1,431,495ExpensesNotReportedAmt
Expenses Subtotal$3,957,362ExpensesSubtotalAmt
Expenses Not Rpt Fincl Stmt$0ExpensesNotRptFinclStmtAmt
Total Expenses Per Form990$3,957,362TotalExpensesPerForm990Amt

Supplemental Information Detail SupplementalInformationDetail

FieldValueIRS element (for citing)
Form And Line ReferencePart X, Line 2:FormAndLineReferenceDesc
ExplanationThere is no provision for federal or state taxes on income as iNaturalist is a tax-exempt entity under Internal Revenue Code Section 501(c)(3) and California Revenue and Taxation Code 23701d. iNaturalist has evaluated its current tax positions and has concluded that as of December 31, 2025, it does not have any significant uncertain tax positions for which a reserve would be necessary.ExplanationTxt

Schedule G IRS990ScheduleG

FieldValueIRS element (for citing)
Mail SolicitationsYes (X)MailSolicitationsInd
Email SolicitationsYes (X)EmailSolicitationsInd
In Person SolicitationsYes (X)InPersonSolicitationsInd
Solicitation Of Non Govt GrantsYes (X)SolicitationOfNonGovtGrantsInd
Solicitation Of Govt GrantsYes (X)SolicitationOfGovtGrantsInd
Agrmt Prof Fundraising ActyYes (1)AgrmtProfFundraisingActyInd

Fundraiser Activity Info FundraiserActivityInfoGrp (2 entries)

Address Line1USAddress/AddressLine1TxtCityUSAddress/CityNmState AbbreviationUSAddress/StateAbbreviationCdZIPUSAddress/ZIPCdActivityActivityTxtFundraiser Control Of FundsFundraiserControlOfFundsIndGross ReceiptsGrossReceiptsAmtRetained By ContractorRetainedByContractorAmtNet To OrganizationNetToOrganizationAmt
K2D Strategies
4201 Wilson Blvd 300ArlingtonVA22203Direct Mail & Digital Fundraising Strategic Advisement,Campa0$94,994$21,900$73,094
Stefanie Mathew Strategies LLC
24 Courthouse Sq Apt 605RockvilleMD20850Corporate Giving & Partnerships Advisement0$2,047$5,000-$2,953
FieldValueIRS element (for citing)
Total Gross Receipts$97,041TotalGrossReceiptsAmt
Total Retained By Contractors$26,900TotalRetainedByContractorsAmt
Total Net To Organization$70,141TotalNetToOrganizationAmt
Licensed StatesALLicensedStatesCd
Licensed StatesAKLicensedStatesCd
Licensed StatesAZLicensedStatesCd
Licensed StatesARLicensedStatesCd
Licensed StatesCALicensedStatesCd
Licensed StatesCOLicensedStatesCd
Licensed StatesCTLicensedStatesCd
Licensed StatesDELicensedStatesCd
Licensed StatesFLLicensedStatesCd
Licensed StatesGALicensedStatesCd
Licensed StatesHILicensedStatesCd
Licensed StatesIDLicensedStatesCd
Licensed StatesILLicensedStatesCd
Licensed StatesINLicensedStatesCd
Licensed StatesIALicensedStatesCd
Licensed StatesKSLicensedStatesCd
Licensed StatesKYLicensedStatesCd
Licensed StatesLALicensedStatesCd
Licensed StatesMELicensedStatesCd
Licensed StatesMDLicensedStatesCd
Licensed StatesMALicensedStatesCd
Licensed StatesMILicensedStatesCd
Licensed StatesMNLicensedStatesCd
Licensed StatesMSLicensedStatesCd
Licensed StatesMOLicensedStatesCd
Licensed StatesMTLicensedStatesCd
Licensed StatesNELicensedStatesCd
Licensed StatesNVLicensedStatesCd
Licensed StatesNHLicensedStatesCd
Licensed StatesNJLicensedStatesCd
Licensed StatesNMLicensedStatesCd
Licensed StatesNYLicensedStatesCd
Licensed StatesNCLicensedStatesCd
Licensed StatesNDLicensedStatesCd
Licensed StatesOHLicensedStatesCd
Licensed StatesOKLicensedStatesCd
Licensed StatesORLicensedStatesCd
Licensed StatesPALicensedStatesCd
Licensed StatesRILicensedStatesCd
Licensed StatesSCLicensedStatesCd
Licensed StatesSDLicensedStatesCd
Licensed StatesTNLicensedStatesCd
Licensed StatesTXLicensedStatesCd
Licensed StatesUTLicensedStatesCd
Licensed StatesVTLicensedStatesCd
Licensed StatesVALicensedStatesCd
Licensed StatesWALicensedStatesCd
Licensed StatesWVLicensedStatesCd
Licensed StatesWILicensedStatesCd
Licensed StatesWYLicensedStatesCd

Schedule J IRS990ScheduleJ

FieldValueIRS element (for citing)
Board Or Committee ApprovalYes (X)BoardOrCommitteeApprovalInd
Severance Payment0SeverancePaymentInd
Supplemental Nonqual Rtr Plan0SupplementalNonqualRtrPlanInd
Equity Based Comp Arrngm0EquityBasedCompArrngmInd
Comp Based On Revenue Of Flng Org0CompBasedOnRevenueOfFlngOrgInd
Comp Bsd On Rev Related Orgs0CompBsdOnRevRelatedOrgsInd
Comp Bsd Net Earns Flng Org0CompBsdNetEarnsFlngOrgInd
Comp Bsd Net Earns Rltd Orgs0CompBsdNetEarnsRltdOrgsInd
Any Non Fixed Payments0AnyNonFixedPaymentsInd
Initial Contract Exception0InitialContractExceptionInd

Rltd Org Officer Trst Key Empl RltdOrgOfficerTrstKeyEmplGrp (9 entries)

TitleTitleTxtBase Compensation Filing OrgBaseCompensationFilingOrgAmtCompensation Based On Rltd OrgsCompensationBasedOnRltdOrgsAmtBonus Filing OrganizationBonusFilingOrganizationAmountBonus Related OrganizationsBonusRelatedOrganizationsAmtOther Compensation Filing OrgOtherCompensationFilingOrgAmtOther Compensation Rltd OrgsOtherCompensationRltdOrgsAmtDeferred Compensation Flng OrgDeferredCompensationFlngOrgAmtDeferred Comp Rltd OrgsDeferredCompRltdOrgsAmtNontaxable Benefits Filing OrgNontaxableBenefitsFilingOrgAmtNontaxable Benefits Rltd OrgsNontaxableBenefitsRltdOrgsAmtTotal Compensation Filing OrgTotalCompensationFilingOrgAmtTotal Compensation Rltd OrgsTotalCompensationRltdOrgsAmtComp Report Prior990 Filing OrgCompReportPrior990FilingOrgAmtComp Report Prior990 Rltd OrgsCompReportPrior990RltdOrgsAmt
Scott Loarie
Executive Director, Secretary$192,291$0$0$0$1,200$0$9,580$0$26,432$0$229,503$0$0$0
Patrick Leary
SR. Staff Software and Devops Eng.$194,272$0$0$0$1,200$0$9,826$0$8,682$0$213,980$0$0$0
Carrie Seltzer
Head of Engagement$186,586$0$0$0$1,200$0$9,503$0$10,657$0$207,946$0$0$0
Ken-Ichi Ueda
Co-Founder, Staff Software Engineer$180,573$0$0$0$1,200$0$8,397$0$8,426$0$198,596$0$0$0
Jeanne Braha
Head of Development$162,765$0$0$0$1,250$0$6,057$0$9,652$0$179,724$0$0$0
Kirk Van Gorkom
Head of Engineering (thru 10/25)$149,905$0$0$0$1,000$0$4,565$0$17,983$0$173,453$0$0$0
Abhas Misraraj
Staff UI/UX Designer$147,083$0$0$0$1,200$0$7,611$0$8,986$0$164,880$0$0$0
Dorothea Skaff
Dir. of Dig. Fundraising & Engmt$134,479$0$0$0$1,200$0$4,299$0$22,575$0$162,553$0$0$0
Alison Young
Director of Outreach Programs$128,299$0$0$0$1,100$0$5,332$0$15,562$0$150,293$0$0$0

Supplemental Information Detail SupplementalInformationDetail

FieldValueIRS element (for citing)
Form And Line ReferencePart I, Line 3FormAndLineReferenceDesc
Explanationin FY25, Executive Director compensation changes were approved by the Board. In prior years, the organization used an independent compensation consultant to establish an organizational pay scale, and that individual reviewed 990s of comparable organizations to arrive at final recommendations.ExplanationTxt

Schedule O IRS990ScheduleO

Supplemental Information Detail SupplementalInformationDetail (7 entries)

Form And Line ReferenceFormAndLineReferenceDescExplanationExplanationTxt
Form 990, Part III, line 2In 2025, iNaturalist introduced two new programmatic initiatives to expand global access and enhance community participation: -Next-Generation Mobile Application: Released an updated iOS mobile application featuring real-time in-camera species identification, streamlined photo import workflows, and expanded observation search capabilities. -iNaturalist Ambassador Program: Launched a formal community leadership program providing volunteers with training, presentation decks, educational guides, physical signage, and QR code tools to facilitate local biodiversity education and outreach worldwide.
Form 990, Part VI, Section A, line 8bThe board does not have committees.
Form 990, Part VI, Section B, line 11bThe Form 990 is prepared by an outside accounting firm with data provided by management. The return is reviewed by the CFO and then by the Leadership team. Prior to filing, the draft return is sent to the board of directors for final review and approval.
Form 990, Part VI, Section B, line 12cThe board of directors reviews and determines whether any transaction is a conflict of interest. Any person with a conflict of interest in a transaction must recuse themselves from any votes or decisions concerning the transaction. The organization will enter into the transaction only if the Board determines, by a majority vote of the non-interested directors then in office, that the transaction or arrangement is in the organization's best interests and for its own benefit; is fair and reasonable to the organization and, after exercising due diligence, determines that the organization cannot obtain a more advantageous transaction or arrangement with reasonable efforts under the circumstances. The following are the individuals covered with this policy: (i) a director or officer of the organization, or any member of a committee of the organization with Board-delegated powers, (ii) an employee of the organization earning $50,000 or more annually, (iii) any other person in a position to exercise substantial influence over the organization's affairs, or (iv) a family member of an individual described in (i), (ii) or (iii).
Form 990, Part VI, Section B, line 15In 2023, the organization hired an outside consulting firm to benchmark all top management positions based on market data. The compensation structure of top management is based on the data and finding and was adjusted for the prevailing inflation rate in 2024. The Board reviews and approves the compensation structure of top management annually.
Form 990, Part VI, Section C, line 19The organization's governing documents, conflict of interest policy and financial statements are available upon request.
Form 990, Part IX, line 11gPayroll Fees: Program service expenses 0. Management and general expenses 5,259. Fundraising expenses 0. Total expenses 5,259. HR Contractors: Program service expenses 1,680. Management and general expenses 3,352. Fundraising expenses 1,298. Total expenses 6,330. Technical Contractors: Program service expenses 442,025. Management and general expenses 0. Fundraising expenses 0. Total expenses 442,025. Communications Consultants: Program service expenses 14,931. Management and general expenses 0. Fundraising expenses 0. Total expenses 14,931. Other Professional Services: Program service expenses 0. Management and general expenses 0. Fundraising expenses 31,513. Total expenses 31,513.

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