SEISMOLOGICAL SOCIETY OF AMERICA: Form 990, tax year 2025

View the entire original 990 at ProPublica ↗

Organization
SEISMOLOGICAL SOCIETY OF AMERICA (EIN 94-6078791)
Tax period
2025-02-01 to 2026-01-31
Filed
2026-09-11
IRS object ID
202612549349301586
Schema version
2025v4.1
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)
Return2026-09-11T15:59:46-07:00ReturnTs
Tax Period End2026-01-31TaxPeriodEndDt

Preparer Firm PreparerFirmGrp

FieldValueIRS element (for citing)
Preparer Firm EIN204994635PreparerFirmEIN

Preparer Firm Name PreparerFirmName

FieldValueIRS element (for citing)
Business Name Line1Iryna ACBusinessNameLine1Txt

Preparer US Address PreparerUSAddress

FieldValueIRS element (for citing)
Address Line11000 Broadway Ste 200-CAddressLine1Txt
CityOaklandCityNm
State AbbreviationCAStateAbbreviationCd
ZIP94607ZIPCd
FieldValueIRS element (for citing)
Return Type990ReturnTypeCd
Tax Period Begin2025-02-01TaxPeriodBeginDt

Filer Filer

FieldValueIRS element (for citing)
EIN946078791EIN

Business Name BusinessName

FieldValueIRS element (for citing)
Business Name Line1Seismological Society of AmericaBusinessNameLine1Txt
FieldValueIRS element (for citing)
Business Name ControlSEISBusinessNameControlTxt
Phone5105255474PhoneNum

US Address USAddress

FieldValueIRS element (for citing)
Address Line1400 Evelyn Ave Ste 201AddressLine1Txt
CityAlbanyCityNm
State AbbreviationCAStateAbbreviationCd
ZIP94706ZIPCd

Business Officer BusinessOfficerGrp

FieldValueIRS element (for citing)
PersonNan BroadbentPersonNm
Person TitleExecutive DirectorPersonTitleTxt
Signature2026-09-10SignatureDt
Discuss With Paid PreparerYes (true)DiscussWithPaidPreparerInd

Preparer Person PreparerPersonGrp

FieldValueIRS element (for citing)
Preparer PersonKostyantyn Oreshkov EAPreparerPersonNm
PTINP00923916PTIN
Phone5104679506PhoneNum
FieldValueIRS element (for citing)
Tax2025TaxYr

Form 990 IRS990

FieldValueIRS element (for citing)
Principal OfficerNan BroadbentPrincipalOfficerNm

US Address USAddress

FieldValueIRS element (for citing)
Address Line1400 Evelyn Ave Ste 201AddressLine1Txt
CityAlbanyCityNm
State AbbreviationCAStateAbbreviationCd
ZIP947061375ZIPCd
FieldValueIRS element (for citing)
Gross Receipts$3,704,560GrossReceiptsAmt
Group Return For AffiliatesfalseGroupReturnForAffiliatesInd
Organization501c3Yes (X)Organization501c3Ind
Website Addresswww.seismosoc.orgWebsiteAddressTxt
Type Of Organization CorpYes (X)TypeOfOrganizationCorpInd
Formation1906FormationYr
Legal Domicile StateCALegalDomicileStateCd
Activity Or MissionThe Seismological Society of America (SSA) is an international scientific society devoted to the advancement of seismology and the understanding of earthquakes for the benefit of societyActivityOrMissionDesc
Voting Members Governing Body13VotingMembersGoverningBodyCnt
Voting Members Independent13VotingMembersIndependentCnt
Total Employee7TotalEmployeeCnt
Total Volunteers800TotalVolunteersCnt
Total Gross UBI$0TotalGrossUBIAmt
PY Contributions Grants$319,503PYContributionsGrantsAmt
CY Contributions Grants$393,100CYContributionsGrantsAmt
PY Program Service Revenue$3,032,026PYProgramServiceRevenueAmt
CY Program Service Revenue$3,110,347CYProgramServiceRevenueAmt
PY Investment Income$192,242PYInvestmentIncomeAmt
CY Investment Income$201,113CYInvestmentIncomeAmt
CY Other Revenue$0CYOtherRevenueAmt
PY Total Revenue$3,543,771PYTotalRevenueAmt
CY Total Revenue$3,704,560CYTotalRevenueAmt
PY Grants And Similar Paid$101,477PYGrantsAndSimilarPaidAmt
CY Grants And Similar Paid$125,728CYGrantsAndSimilarPaidAmt
CY Benefits Paid To Members$0CYBenefitsPaidToMembersAmt
PY Salaries Comp Emp Bnft Paid$948,720PYSalariesCompEmpBnftPaidAmt
CY Salaries Comp Emp Bnft Paid$1,115,815CYSalariesCompEmpBnftPaidAmt
CY Total Prof Fndrsng Expns$0CYTotalProfFndrsngExpnsAmt
CY Total Fundraising Expense$29,610CYTotalFundraisingExpenseAmt
PY Other Expenses$2,393,143PYOtherExpensesAmt
CY Other Expenses$2,271,537CYOtherExpensesAmt
PY Total Expenses$3,443,340PYTotalExpensesAmt
CY Total Expenses$3,513,080CYTotalExpensesAmt
PY Revenues Less Expenses$100,431PYRevenuesLessExpensesAmt
CY Revenues Less Expenses$191,480CYRevenuesLessExpensesAmt
Total Assets BOY$7,356,593TotalAssetsBOYAmt
Total Assets EOY$8,289,580TotalAssetsEOYAmt
Total Liabilities BOY$1,038,446TotalLiabilitiesBOYAmt
Total Liabilities EOY$1,024,398TotalLiabilitiesEOYAmt
Net Assets Or Fund Balances BOY$6,318,147NetAssetsOrFundBalancesBOYAmt
Net Assets Or Fund Balances EOY$7,265,182NetAssetsOrFundBalancesEOYAmt
MissionThe Seismological Society of America (SSA) is an international scientific society devoted to the advancement of seismology and the understanding of earthquakes for the benefit of societyMissionDesc
Significant New Program SrvcfalseSignificantNewProgramSrvcInd
Significant ChangefalseSignificantChangeInd
Expense$2,988,889ExpenseAmt
Grant$125,728GrantAmt
Revenue$3,110,347RevenueAmt
DescSSA published three journals and organized two international meetings. The Society serves more than 2500 seismologists from around the world, providing workshops, training, mentoring, more than 40 travel grants and other such services, as well as producing the journals and conferences.Desc
Total Program Service Expenses$2,988,889TotalProgramServiceExpensesAmt
Described In Section501c3Yes (true)DescribedInSection501c3Ind
Schedule B RequiredYes (true)ScheduleBRequiredInd
Political Campaign ActyfalsePoliticalCampaignActyInd
Lobbying ActivitiesfalseLobbyingActivitiesInd
Subject To Proxy TaxfalseSubjectToProxyTaxInd
Donor Advised FundfalseDonorAdvisedFundInd
Conservation EasementsfalseConservationEasementsInd
Collections Of ArtfalseCollectionsOfArtInd
Credit CounselingfalseCreditCounselingInd
Donor Rstr Or Quasi EndowmentsYes (true)DonorRstrOrQuasiEndowmentsInd
Report Land Building EquipmentYes (true)ReportLandBuildingEquipmentInd
Report Investments Other SecfalseReportInvestmentsOtherSecInd
Report Program Related InvstfalseReportProgramRelatedInvstInd
Report Other AssetsfalseReportOtherAssetsInd
Report Other LiabilitiesYes (true)ReportOtherLiabilitiesInd
Include FIN48 FootnoteYes (true)IncludeFIN48FootnoteInd
Independent Audit Fincl StmtYes (true)IndependentAuditFinclStmtInd
Consolidated Audit Fincl StmtfalseConsolidatedAuditFinclStmtInd
School OperatingfalseSchoolOperatingInd
Foreign OfficefalseForeignOfficeInd
Foreign ActivitiesYes (true)ForeignActivitiesInd
More Than5000 K To OrgYes (true)MoreThan5000KToOrgInd
More Than5000 K To IndividualsYes (true)MoreThan5000KToIndividualsInd
Professional FundraisingfalseProfessionalFundraisingInd
Fundraising ActivitiesfalseFundraisingActivitiesInd
Gaming ActivitiesfalseGamingActivitiesInd
Operate HospitalfalseOperateHospitalInd
Grants To OrganizationsfalseGrantsToOrganizationsInd
Grants To IndividualsYes (true)GrantsToIndividualsInd
Schedule J RequiredYes (true)ScheduleJRequiredInd
Tax Exempt BondsfalseTaxExemptBondsInd
Engaged In Excess Benefit TransfalseEngagedInExcessBenefitTransInd
PY Excess Benefit TransfalsePYExcessBenefitTransInd
Loan OutstandingfalseLoanOutstandingInd
Grant To Related PersonfalseGrantToRelatedPersonInd
Business Rln With Org MemfalseBusinessRlnWithOrgMemInd
Business Rln With Fam MemfalseBusinessRlnWithFamMemInd
Business Rln With35 Ctrl EntfalseBusinessRlnWith35CtrlEntInd
Deductible Non Cash ContrifalseDeductibleNonCashContriInd
Deductible Art ContributionfalseDeductibleArtContributionInd
Terminate OperationsfalseTerminateOperationsInd
Partial LiquidationfalsePartialLiquidationInd
Disregarded EntityfalseDisregardedEntityInd
Related EntityfalseRelatedEntityInd
Related Organization Ctrl EntfalseRelatedOrganizationCtrlEntInd
Trnsfr Exmpt Non Chrtbl Rltd OrgfalseTrnsfrExmptNonChrtblRltdOrgInd
Activities Conducted PrtshpfalseActivitiesConductedPrtshpInd
Schedule O RequiredYes (true)ScheduleORequiredInd
IRP Document29IRPDocumentCnt
IRP Document W2 G0IRPDocumentW2GCnt
Backup Wthld ComplianceYes (true)BackupWthldComplianceInd
Employee7EmployeeCnt
Employment Tax Returns FiledYes (true)EmploymentTaxReturnsFiledInd
Unrelated Bus Incm Over LimitfalseUnrelatedBusIncmOverLimitInd
Foreign Financial AccountfalseForeignFinancialAccountInd
Prohibited Tax Shelter TransfalseProhibitedTaxShelterTransInd
Taxable Party NotificationfalseTaxablePartyNotificationInd
Nondeductible ContributionsfalseNondeductibleContributionsInd
Quid Pro Quo ContributionsfalseQuidProQuoContributionsInd
Form8282 Property Disposed OffalseForm8282PropertyDisposedOfInd
Form8282 Filed0Form8282FiledCnt
Rcv Fnds To Pay Prsnl Bnft CntrctfalseRcvFndsToPayPrsnlBnftCntrctInd
Pay Premiums Prsnl Bnft CntrctfalsePayPremiumsPrsnlBnftCntrctInd
Form8899 FiledindfalseForm8899Filedind
Form1098 C FiledfalseForm1098CFiledInd
Indoor Tanning ServicesfalseIndoorTanningServicesInd
Subj To Tax Rmnrtn Ex Prcht PymtfalseSubjToTaxRmnrtnExPrchtPymtInd
Subject To Excs Tax Net Invst IncfalseSubjectToExcsTaxNetInvstIncInd
Info In Schedule O Part VIYes (X)InfoInScheduleOPartVIInd
Governing Body Voting Members13GoverningBodyVotingMembersCnt
Independent Voting Member13IndependentVotingMemberCnt
Family Or Business RlnfalseFamilyOrBusinessRlnInd
Delegation Of Mgmt DutiesfalseDelegationOfMgmtDutiesInd
Change To Org DocumentsfalseChangeToOrgDocumentsInd
Material Diversion Or MisusefalseMaterialDiversionOrMisuseInd
Members Or StockholdersYes (true)MembersOrStockholdersInd
Election Of Board MembersYes (true)ElectionOfBoardMembersInd
Decisions Subject To ApprovaYes (true)DecisionsSubjectToApprovaInd
Minutes Of Governing BodyYes (true)MinutesOfGoverningBodyInd
Minutes Of CommitteesYes (true)MinutesOfCommitteesInd
Officer Mailing AddressfalseOfficerMailingAddressInd
Local ChaptersfalseLocalChaptersInd
Form990 Provided To Gvrn BodyYes (true)Form990ProvidedToGvrnBodyInd
Conflict Of Interest PolicyYes (true)ConflictOfInterestPolicyInd
Annual Disclosure Covered PrsnYes (true)AnnualDisclosureCoveredPrsnInd
Regular Monitoring EnfrcYes (true)RegularMonitoringEnfrcInd
Whistleblower PolicyYes (true)WhistleblowerPolicyInd
Document Retention PolicyYes (true)DocumentRetentionPolicyInd
Compensation Process CEOYes (true)CompensationProcessCEOInd
Compensation Process OtherYes (true)CompensationProcessOtherInd
Investment In Joint VenturefalseInvestmentInJointVentureInd
States Where Copy Of Return Is FldCAStatesWhereCopyOfReturnIsFldCd
Other WebsiteYes (X)OtherWebsiteInd
Upon RequestYes (X)UponRequestInd

Books In Care Of Detail BooksInCareOfDetail

FieldValueIRS element (for citing)
PersonJill SkinnerPersonNm
Phone5105255474PhoneNum

US Address USAddress

FieldValueIRS element (for citing)
Address Line1400 Evelyn Ave Ste 201AddressLine1Txt
CityAlbanyCityNm
State AbbreviationCAStateAbbreviationCd
ZIP94706ZIPCd

Form990 Part VII Section A Form990PartVIISectionAGrp (20 entries)

TitleTitleTxtAverage Hours Per WeekAverageHoursPerWeekRtAverage Hours Per Week Rltd OrgAverageHoursPerWeekRltdOrgRtOfficerOfficerIndReportable Comp From OrgReportableCompFromOrgAmtReportable Comp From Rltd OrgReportableCompFromRltdOrgAmtOther CompensationOtherCompensationAmtIndividual Trustee Or DirectorIndividualTrusteeOrDirectorInd
Nan Broadbent
Executive Dir.40.000.00Yes (X)$321,966$0$30,475
Andria Marcus
Meetings Director40.000.00$135,966$0$23,470
Katie Duffy
Publication Dir.40.000.00$130,316$0$740
Monica Lu
Membership officer40.000.00$101,608$0$17,436
Susan Bilek
President4.000.00Yes (X)$0$0$0Yes (X)
Heather DeShon
Past President2.000.00Yes (X)$0$0$0Yes (X)
Jake Walter
Treasurer1.000.00Yes (X)$0$0$0Yes (X)
Kris Pankow
Secretary1.000.00Yes (X)$0$0$0Yes (X)
Zhigang Peng
President-elect1.000.00Yes (X)$0$0$0Yes (X)
Annemarie Baltay
Board Member1.000.00$0$0$0Yes (X)
Jackie Caplan-Auerbach
Board Member1.000.00$0$0$0Yes (X)
Carl Tape
Board Member1.000.00$0$0$0Yes (X)
Roby Douilly
Board Member1.000.00$0$0$0Yes (X)
Ashly Cabas
Board Member1.000.00$0$0$0Yes (X)
Victor Huerfano
Board Member1.000.00$0$0$0Yes (X)
Ivan Wong
Board Member1.000.00$0$0$0Yes (X)
Andreas Fichtner
Board Member1.000.00$0$0$0Yes (X)
Aaron Velasco
Board Member0.100.00$0$0$0Yes (X)
Diego Melgar
Board Member0.250.00$0$0$0Yes (X)
Ruth Harris
Past President0.250.00Yes (X)$0$0$0Yes (X)
FieldValueIRS element (for citing)
Total Reportable Comp From Org$689,856TotalReportableCompFromOrgAmt
Total Other Compensation$72,121TotalOtherCompensationAmt
Indiv Rcvd Greater Than100 K4IndivRcvdGreaterThan100KCnt
Former Ofcr Employees ListedfalseFormerOfcrEmployeesListedInd
Total Comp Greater Than150 KYes (true)TotalCompGreaterThan150KInd
Compensation From Other SrcsfalseCompensationFromOtherSrcsInd

Contractor Compensation ContractorCompensationGrp (5 entries)

Address Line1ContractorAddress/USAddress/AddressLine1TxtCityContractorAddress/USAddress/CityNmState AbbreviationContractorAddress/USAddress/StateAbbreviationCdZIPContractorAddress/USAddress/ZIPCdServicesServicesDescCompensationCompensationAmt
Lumina Datamatics
600 Cordwainer Dr Unit 103NorwellMA02061Composition$259,669
Hilton Baltimore Inner Harbor
401 West Pratt StBaltimoreMD21201Hospitality$238,608
Projection
5803 Rolling Road 200SpringfieldVA22152AV Conference Services$124,094
Delta Think Inc
600 Arlingham RoadFlourtownPA19031Publishing Services$130,550
John Wiley & Sons Inc
111 River StHobokenNJ07030Editorial Services$113,477
FieldValueIRS element (for citing)
Cntrct Rcvd Greater Than100 K5CntrctRcvdGreaterThan100KCnt
Membership Dues$230,536MembershipDuesAmt
All Other Contributions$162,564AllOtherContributionsAmt
Total Contributions$393,100TotalContributionsAmt

Program Service Revenue ProgramServiceRevenueGrp (2 entries)

DescDescBusinessBusinessCdTotal Revenue ColumnTotalRevenueColumnAmtRelated Or Exempt Func IncomeRelatedOrExemptFuncIncomeAmt
MEETINGS813920$668,833$668,833
Publication Charges511120$2,441,514$2,441,514
FieldValueIRS element (for citing)
Total Program Service Revenue$3,110,347TotalProgramServiceRevenueAmt

Investment Income InvestmentIncomeGrp

FieldValueIRS element (for citing)
Total Revenue Column$201,113TotalRevenueColumnAmt
Exclusion$201,113ExclusionAmt

Incm From Invest Bond Proceeds IncmFromInvestBondProceedsGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt

Royalties Revenue RoyaltiesRevenueGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt

Net Rental Income Or Loss NetRentalIncomeOrLossGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt

Net Gain Or Loss Investments NetGainOrLossInvestmentsGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt

Net Incm From Fundraising Evt NetIncmFromFundraisingEvtGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt

Net Income From Gaming NetIncomeFromGamingGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt

Net Income Or Loss NetIncomeOrLossGrp

FieldValueIRS element (for citing)
Total Revenue Column$0TotalRevenueColumnAmt
FieldValueIRS element (for citing)
Other Revenue Total$0OtherRevenueTotalAmt

Total Revenue TotalRevenueGrp

FieldValueIRS element (for citing)
Total Revenue Column$3,704,560TotalRevenueColumnAmt
Related Or Exempt Func Income$3,110,347RelatedOrExemptFuncIncomeAmt
Exclusion$201,113ExclusionAmt

Grants To Domestic Orgs GrantsToDomesticOrgsGrp

FieldValueIRS element (for citing)
Total$5,000TotalAmt
Program Services$5,000ProgramServicesAmt

Grants To Domestic Individuals GrantsToDomesticIndividualsGrp

FieldValueIRS element (for citing)
Total$57,877TotalAmt
Program Services$57,877ProgramServicesAmt

Foreign Grants ForeignGrantsGrp

FieldValueIRS element (for citing)
Total$62,851TotalAmt
Program Services$62,851ProgramServicesAmt

Benefits To Members BenefitsToMembersGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Comp Current Ofcr Directors CompCurrentOfcrDirectorsGrp

FieldValueIRS element (for citing)
Total$352,441TotalAmt
Program Services$229,087ProgramServicesAmt
Management And General$105,732ManagementAndGeneralAmt
Fundraising$17,622FundraisingAmt

Comp Disqual Persons CompDisqualPersonsGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Other Salaries And Wages OtherSalariesAndWagesGrp

FieldValueIRS element (for citing)
Total$619,060TotalAmt
Program Services$552,421ProgramServicesAmt
Management And General$60,812ManagementAndGeneralAmt
Fundraising$5,827FundraisingAmt

Pension Plan Contributions PensionPlanContributionsGrp

FieldValueIRS element (for citing)
Total$39,672TotalAmt
Program Services$36,732ProgramServicesAmt
Management And General$2,790ManagementAndGeneralAmt
Fundraising$150FundraisingAmt

Other Employee Benefits OtherEmployeeBenefitsGrp

FieldValueIRS element (for citing)
Total$39,266TotalAmt
Program Services$32,022ProgramServicesAmt
Management And General$6,369ManagementAndGeneralAmt
Fundraising$875FundraisingAmt

Payroll Taxes PayrollTaxesGrp

FieldValueIRS element (for citing)
Total$65,376TotalAmt
Program Services$52,918ProgramServicesAmt
Management And General$10,935ManagementAndGeneralAmt
Fundraising$1,523FundraisingAmt

Fees For Services Management FeesForServicesManagementGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Fees For Services Legal FeesForServicesLegalGrp

FieldValueIRS element (for citing)
Total$47,104TotalAmt
Management And General$47,104ManagementAndGeneralAmt

Fees For Services Accounting FeesForServicesAccountingGrp

FieldValueIRS element (for citing)
Total$100,310TotalAmt
Management And General$100,310ManagementAndGeneralAmt

Fees For Services Lobbying FeesForServicesLobbyingGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Fees For Services Prof Fundraising FeesForServicesProfFundraising

FieldValueIRS element (for citing)
Total$0TotalAmt

Fees For Srvc Invst Mgmnt Fees FeesForSrvcInvstMgmntFeesGrp

FieldValueIRS element (for citing)
Total$40,116TotalAmt
Management And General$40,116ManagementAndGeneralAmt

Fees For Services Other FeesForServicesOtherGrp

FieldValueIRS element (for citing)
Total$70,624TotalAmt
Program Services$62,296ProgramServicesAmt
Management And General$7,531ManagementAndGeneralAmt
Fundraising$797FundraisingAmt

Advertising AdvertisingGrp

FieldValueIRS element (for citing)
Total$181,934TotalAmt
Program Services$181,934ProgramServicesAmt

Office Expenses OfficeExpensesGrp

FieldValueIRS element (for citing)
Total$182,418TotalAmt
Program Services$103,760ProgramServicesAmt
Management And General$78,261ManagementAndGeneralAmt
Fundraising$397FundraisingAmt

Information Technology InformationTechnologyGrp

FieldValueIRS element (for citing)
Total$23,853TotalAmt
Program Services$19,307ProgramServicesAmt
Management And General$3,990ManagementAndGeneralAmt
Fundraising$556FundraisingAmt

Royalties RoyaltiesGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Occupancy OccupancyGrp

FieldValueIRS element (for citing)
Total$57,828TotalAmt
Program Services$46,808ProgramServicesAmt
Management And General$9,673ManagementAndGeneralAmt
Fundraising$1,347FundraisingAmt

Travel TravelGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Pymt Travel Entrtnmnt Pub Ofcl PymtTravelEntrtnmntPubOfclGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Conferences Meetings ConferencesMeetingsGrp

FieldValueIRS element (for citing)
Total$778,162TotalAmt
Program Services$760,283ProgramServicesAmt
Management And General$17,792ManagementAndGeneralAmt
Fundraising$87FundraisingAmt

Interest InterestGrp

FieldValueIRS element (for citing)
Total$74TotalAmt
Management And General$74ManagementAndGeneralAmt

Payments To Affiliates PaymentsToAffiliatesGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Depreciation Depletion DepreciationDepletionGrp

FieldValueIRS element (for citing)
Total$3,747TotalAmt
Program Services$3,033ProgramServicesAmt
Management And General$627ManagementAndGeneralAmt
Fundraising$87FundraisingAmt

Insurance InsuranceGrp

FieldValueIRS element (for citing)
Total$12,455TotalAmt
Program Services$10,081ProgramServicesAmt
Management And General$2,084ManagementAndGeneralAmt
Fundraising$290FundraisingAmt

Other Expenses OtherExpensesGrp (4 entries)

DescDescTotalTotalAmtProgram ServicesProgramServicesAmtManagement And GeneralManagementAndGeneralAmtFundraisingFundraisingAmt
Publication Cost$734,641$734,641
Awards$19,665$19,665
Dues, Fees & Other Charges$9,979$9,546$381$52
Bad debts expense$4,980$4,980

All Other Expenses AllOtherExpensesGrp

FieldValueIRS element (for citing)
Total$3,647TotalAmt
Program Services$3,647ProgramServicesAmt

Total Functional Expenses TotalFunctionalExpensesGrp

FieldValueIRS element (for citing)
Total$3,513,080TotalAmt
Program Services$2,988,889ProgramServicesAmt
Management And General$494,581ManagementAndGeneralAmt
Fundraising$29,610FundraisingAmt

Cash Non Interest Bearing CashNonInterestBearingGrp

FieldValueIRS element (for citing)
BOY$155,922BOYAmt
EOY$269,569EOYAmt

Savings And Temp Cash Invst SavingsAndTempCashInvstGrp

FieldValueIRS element (for citing)
BOY$624,643BOYAmt
EOY$565,051EOYAmt

Pledges And Grants Receivable PledgesAndGrantsReceivableGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Accounts Receivable AccountsReceivableGrp

FieldValueIRS element (for citing)
BOY$109,697BOYAmt
EOY$108,093EOYAmt

Receivables From Officers Etc ReceivablesFromOfficersEtcGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Rcvbl From Disqualified Prsn RcvblFromDisqualifiedPrsnGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Oth Notes Loans Receivable Net OthNotesLoansReceivableNetGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Inventories For Sale Or Use InventoriesForSaleOrUseGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Prepaid Expenses Defrd Charges PrepaidExpensesDefrdChargesGrp

FieldValueIRS element (for citing)
BOY$93,160BOYAmt
EOY$65,233EOYAmt
FieldValueIRS element (for citing)
Land Bldg Equip Cost Or Other Bss$152,537LandBldgEquipCostOrOtherBssAmt
Land Bldg Equip Accum Deprec$147,812LandBldgEquipAccumDeprecAmt

Land Bldg Equip Basis Net LandBldgEquipBasisNetGrp

FieldValueIRS element (for citing)
BOY$5,240BOYAmt
EOY$4,725EOYAmt

Investments Pub Traded Sec InvestmentsPubTradedSecGrp

FieldValueIRS element (for citing)
BOY$6,124,664BOYAmt
EOY$7,083,997EOYAmt

Investments Other Securities InvestmentsOtherSecuritiesGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Investments Program Related InvestmentsProgramRelatedGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Intangible Assets IntangibleAssetsGrp

FieldValueIRS element (for citing)
EOY$0EOYAmt

Other Assets Total OtherAssetsTotalGrp

FieldValueIRS element (for citing)
BOY$243,267BOYAmt
EOY$192,912EOYAmt

Total Assets TotalAssetsGrp

FieldValueIRS element (for citing)
BOY$7,356,593BOYAmt
EOY$8,289,580EOYAmt

Accounts Payable Accr Expnss AccountsPayableAccrExpnssGrp

FieldValueIRS element (for citing)
BOY$183,007BOYAmt
EOY$154,374EOYAmt

Deferred Revenue DeferredRevenueGrp

FieldValueIRS element (for citing)
BOY$612,172BOYAmt
EOY$677,112EOYAmt

Other Liabilities OtherLiabilitiesGrp

FieldValueIRS element (for citing)
BOY$243,267BOYAmt
EOY$192,912EOYAmt

Total Liabilities TotalLiabilitiesGrp

FieldValueIRS element (for citing)
BOY$1,038,446BOYAmt
EOY$1,024,398EOYAmt
FieldValueIRS element (for citing)
Organization Follows FASB117Yes (X)OrganizationFollowsFASB117Ind

No Donor Restriction Net Assets NoDonorRestrictionNetAssetsGrp

FieldValueIRS element (for citing)
BOY$5,548,397BOYAmt
EOY$6,380,886EOYAmt

Donor Restriction Net Assets DonorRestrictionNetAssetsGrp

FieldValueIRS element (for citing)
BOY$769,750BOYAmt
EOY$884,296EOYAmt

Total Net Assets Fund Balance TotalNetAssetsFundBalanceGrp

FieldValueIRS element (for citing)
BOY$6,318,147BOYAmt
EOY$7,265,182EOYAmt

Tot Liab Net Assets Fund Balance TotLiabNetAssetsFundBalanceGrp

FieldValueIRS element (for citing)
BOY$7,356,593BOYAmt
EOY$8,289,580EOYAmt
FieldValueIRS element (for citing)
Reconcilation Revenue Expnss$191,480ReconcilationRevenueExpnssAmt
Net Unrlzd Gains Losses Invst$755,555NetUnrlzdGainsLossesInvstAmt
Method Of Accounting AccrualYes (X)MethodOfAccountingAccrualInd
Accountant Compile Or ReviewfalseAccountantCompileOrReviewInd
FS AuditedYes (true)FSAuditedInd

FS Audited Basis FSAuditedBasisGrp

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

Schedule A IRS990ScheduleA

FieldValueIRS element (for citing)
Publicly Supported Org509a2Yes (X)PubliclySupportedOrg509a2Ind

Gifts Grants Contris Rcvd509 GiftsGrantsContrisRcvd509Grp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$1,953,714CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$268,833CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$371,049CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$319,503CurrentTaxYearMinus1YearAmt
Current Tax Year$393,100CurrentTaxYearAmt
Total$3,306,199TotalAmt

Gross Receipts Admissions GrossReceiptsAdmissionsGrp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$2,456,627CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$2,607,248CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$2,817,588CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$3,032,026CurrentTaxYearMinus1YearAmt
Current Tax Year$3,110,347CurrentTaxYearAmt
Total$14,023,836TotalAmt

Gross Receipts Non Unrlt Bus GrossReceiptsNonUnrltBusGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Tax Rev Levied Orgnztnl Bnft509 TaxRevLeviedOrgnztnlBnft509Grp

FieldValueIRS element (for citing)
Total$0TotalAmt

Govt Furn Srvc Fclts Vl509 GovtFurnSrvcFcltsVl509Grp

FieldValueIRS element (for citing)
Total$0TotalAmt

Total509 Total509Grp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$4,410,341CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$2,876,081CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$3,188,637CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$3,351,529CurrentTaxYearMinus1YearAmt
Current Tax Year$3,503,447CurrentTaxYearAmt
Total$17,330,035TotalAmt

Amounts Rcvd Dsqlfy Person AmountsRcvdDsqlfyPersonGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Substantial Contributors Amt SubstantialContributorsAmtGrp

FieldValueIRS element (for citing)
Total$0TotalAmt
FieldValueIRS element (for citing)
Public Support Total509$17,330,035PublicSupportTotal509Amt

Gross Investment Income509 GrossInvestmentIncome509Grp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$138,031CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$153,438CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$174,026CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$192,242CurrentTaxYearMinus1YearAmt
Current Tax Year$201,113CurrentTaxYearAmt
Total$858,850TotalAmt

Post1975 UBTI Post1975UBTIGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Investment Income And UBTI InvestmentIncomeAndUBTIGrp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$138,031CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$153,438CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$174,026CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$192,242CurrentTaxYearMinus1YearAmt
Current Tax Year$201,113CurrentTaxYearAmt
Total$858,850TotalAmt

Net Income From Other UBI NetIncomeFromOtherUBIGrp

FieldValueIRS element (for citing)
Total$0TotalAmt

Other Income509 OtherIncome509Grp

FieldValueIRS element (for citing)
Total$0TotalAmt

Total Support Calendar Year TotalSupportCalendarYearGrp

FieldValueIRS element (for citing)
Current Tax Year Minus4 Years$4,548,372CurrentTaxYearMinus4YearsAmt
Current Tax Year Minus3 Years$3,029,519CurrentTaxYearMinus3YearsAmt
Current Tax Year Minus2 Years$3,362,663CurrentTaxYearMinus2YearsAmt
Current Tax Year Minus1 Year$3,543,771CurrentTaxYearMinus1YearAmt
Current Tax Year$3,704,560CurrentTaxYearAmt
Total$18,188,885TotalAmt
FieldValueIRS element (for citing)
Public Support CY5090.95280PublicSupportCY509Pct
Public Support PY5090.95770PublicSupportPY509Pct
Investment Income CY0.04720InvestmentIncomeCYPct
Investment Income PY0.04230InvestmentIncomePYPct
Thirty Thr Pct Suprt Tests CY509Yes (X)ThirtyThrPctSuprtTestsCY509Ind

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)
Beginning Year Balance$2,913,783BeginningYearBalanceAmt
Contributions$91,022ContributionsAmt
Investment Earnings Or Losses$467,373InvestmentEarningsOrLossesAmt
Administrative Expenses$19,278AdministrativeExpensesAmt
End Year Balance$3,452,900EndYearBalanceAmt

CY Minus1 Yr Endwmt Fund CYMinus1YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$2,391,816BeginningYearBalanceAmt
Contributions$229,876ContributionsAmt
Investment Earnings Or Losses$309,907InvestmentEarningsOrLossesAmt
Administrative Expenses$17,816AdministrativeExpensesAmt
End Year Balance$2,913,783EndYearBalanceAmt

CY Minus2 Yr Endwmt Fund CYMinus2YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$1,880,303BeginningYearBalanceAmt
Contributions$356,230ContributionsAmt
Investment Earnings Or Losses$170,357InvestmentEarningsOrLossesAmt
Administrative Expenses$15,074AdministrativeExpensesAmt
End Year Balance$2,391,816EndYearBalanceAmt

CY Minus3 Yr Endwmt Fund CYMinus3YrEndwmtFundGrp

FieldValueIRS element (for citing)
Beginning Year Balance$1,773,766BeginningYearBalanceAmt
Contributions$220,821ContributionsAmt
Investment Earnings Or Losses-$102,105InvestmentEarningsOrLossesAmt
Administrative Expenses$12,179AdministrativeExpensesAmt
End Year Balance$1,880,303EndYearBalanceAmt

CY Minus4 Yr Endwmt Fund CYMinus4YrEndwmtFundGrp

FieldValueIRS element (for citing)
Contributions$1,812,916ContributionsAmt
Investment Earnings Or Losses-$33,238InvestmentEarningsOrLossesAmt
Administrative Expenses$5,912AdministrativeExpensesAmt
End Year Balance$1,773,766EndYearBalanceAmt
FieldValueIRS element (for citing)
Board Designated Balance EOY1.00000BoardDesignatedBalanceEOYPct
Endowments Held Unrelated OrgfalseEndowmentsHeldUnrelatedOrgInd
Endowments Held Related OrgfalseEndowmentsHeldRelatedOrgInd
Related Org List Sch RfalseRelatedOrgListSchRInd

Equipment EquipmentGrp

FieldValueIRS element (for citing)
Other Cost Or Other Basis$149,600OtherCostOrOtherBasisAmt
Depreciation$144,875DepreciationAmt
Book Value$4,725BookValueAmt

Other Land Buildings OtherLandBuildingsGrp

FieldValueIRS element (for citing)
Other Cost Or Other Basis$2,937OtherCostOrOtherBasisAmt
Depreciation$2,937DepreciationAmt
FieldValueIRS element (for citing)
Total Book Value Land Buildings$4,725TotalBookValueLandBuildingsAmt

Other Liabilities Org OtherLiabilitiesOrgGrp

FieldValueIRS element (for citing)
DescOperating lease liabilitiesDesc
Amt$192,912Amt
FieldValueIRS element (for citing)
Total Liability$192,912TotalLiabilityAmt
Footnote TextYes (X)FootnoteTextInd
Total Rev Etc Audited Fincl Stmt$4,419,999TotalRevEtcAuditedFinclStmtAmt
Net Unrealized Gains Invst$755,555NetUnrealizedGainsInvstAmt
Revenue Not Reported$755,555RevenueNotReportedAmt
Revenue Subtotal$3,664,444RevenueSubtotalAmt
Investment Expenses Not Incld$40,116InvestmentExpensesNotIncldAmt
Revenue Not Reported Fincl Stmt$40,116RevenueNotReportedFinclStmtAmt
Total Revenue Per Form990$3,704,560TotalRevenuePerForm990Amt
Tot Expns Etc Audited Fincl Stmt$3,472,964TotExpnsEtcAuditedFinclStmtAmt
Expenses Subtotal$3,472,964ExpensesSubtotalAmt
Investment Expenses Not Incld2$40,116InvestmentExpensesNotIncld2Amt
Expenses Not Rpt Fincl Stmt$40,116ExpensesNotRptFinclStmtAmt
Total Expenses Per Form990$3,513,080TotalExpensesPerForm990Amt

Supplemental Information Detail SupplementalInformationDetail (2 entries)

Form And Line ReferenceFormAndLineReferenceDescExplanationExplanationTxt
Part V, Line 4: Intended uses of the endowment fund.The Organization has adopted investment policies for board designated endowment funds that attempt to provide a stable stream of income with a short to medium time horizon by investing principally in cash and fixed income securities or to provide a higher return with a long-time horizon by investing in a mix of fixed income securities and equities, depending upon the specific purpose for board designated endowment fund.The Organization has adopted a spending policy for the fund designated by the board of directors to function as endowment. After the fund reaches at least $3 million, the board can authorize expenditures equal to 5% of the average investment value. The board of directors has ultimate discretion over annual appropriations.Funds designated by the board of directors to function as endowment are subject to redesignation at any time, including designation other than endowment funds.
Part X : FIN48 FootnoteThe Organization is not classified as a private foundation and is exempt from federal and state income taxes under section 501(c)(3) of the Internal Revenue Code and Section 23701(d) of the California Code. The Organization is considered a publicly supported organization. Management has evaluated its uncertain tax positions and related income tax contingencies and does not believe any material uncertain tax positions exist.

Schedule F IRS990ScheduleF

FieldValueIRS element (for citing)
Grant Records MaintainedYes (true)GrantRecordsMaintainedInd

Account Activities Outside US AccountActivitiesOutsideUSGrp (6 entries)

RegionRegionTxtOfficesOfficesCntEmployeeEmployeeCntType Of Activities ConductedTypeOfActivitiesConductedTxtRegion Total ExpendituresRegionTotalExpendituresAmt
East Asia & Pacific00Grantmaking$18,376
Europe00Grantmaking$13,440
North America00Grantmaking$17,793
South America00Grantmaking$2,000
South Asia00Grantmaking$675
Sub-Saharan Africa00Grantmaking$10,567
FieldValueIRS element (for citing)
Subtotal Spent$62,851SubtotalSpentAmt
Total Spent$62,851TotalSpentAmt

Grants To Org Outside US GrantsToOrgOutsideUSGrp (2 entries)

RegionRegionTxtPurpose Of GrantPurposeOfGrantTxtCash GrantCashGrantAmtManner Of Cash DisbursementMannerOfCashDisbursementTxt
East Asia & Pacadvancing seismol.$10,000Wire
North Americaadvancing seismol.$15,000Wire
FieldValueIRS element (for citing)
Total Other Org2TotalOtherOrgCnt

Foreign Individuals Grants ForeignIndividualsGrantsGrp (9 entries)

Type Of AssistanceTypeOfAssistanceTxtRegionRegionTxtRecipientRecipientCntCash GrantCashGrantAmtManner Of Cash DisbursementMannerOfCashDisbursementTxtNon Cash AssistanceNonCashAssistanceAmtDescription Of Non Cash AsstDescriptionOfNonCashAsstTxtValuation Method UsedValuationMethodUsedDesc
AES Travel GrantSouth America1$2,000Wire
AES Travel GrantSouth Asia1$675Wire
Annual Meeting Travel GrantEast Asia & Pacific2$4,900Wire$1,186registration feebook
Annual Meeting Travel GrantEurope3$6,000Wire$2,475registration feebook
Annual Meeting Travel GrantNorth America1$2,200Wire$593registration feebook
Annual Meeting Travel GrantSub-Saharan Africa2$4,500Wire$1,067registration feebook
Community GrantSub-Saharan Africa1$5,000Wire
Global Travel GrantEast Asia & Pacific1$2,290Wire
Global Travel GrantEurope2$4,965wire
FieldValueIRS element (for citing)
Transfer To Foreign CorpfalseTransferToForeignCorpInd
Interest In Foreign TrustfalseInterestInForeignTrustInd
Foreign Corp OwnershipfalseForeignCorpOwnershipInd
Passive Foreign Investmest CofalsePassiveForeignInvestmestCoInd
Foreign PartnershipfalseForeignPartnershipInd
Boycott CountriesfalseBoycottCountriesInd

Supplemental Information Detail SupplementalInformationDetail

FieldValueIRS element (for citing)
Form And Line ReferencePart I, Line 2 - Grantmakers Explanation For Monitoring Use of Funds Outside USFormAndLineReferenceDesc
ExplanationFor Community Grants, we require the recipient to provide a detailed budget and two-paragraph summary of the event. For travel grants, recipients provide evidence of attending the event.ExplanationTxt

Schedule I IRS990ScheduleI

FieldValueIRS element (for citing)
Grant Records MaintainedfalseGrantRecordsMaintainedInd
Total501c3 Org0Total501c3OrgCnt
Total Other Org0TotalOtherOrgCnt

Grants Other Asst To Indiv In US GrantsOtherAsstToIndivInUSGrp (7 entries)

Grant TypeGrantTypeTxtRecipientRecipientCntCash GrantCashGrantAmtNon Cash AssistanceNonCashAssistanceAmtValuation Method UsedValuationMethodUsedDescNon Cash AssistanceNonCashAssistanceDesc
Spudich Travel Grants2$4,590
Annual Meeting Travel Grants14$19,750$6,874bookregistration fee waived
Topical Meeting Travel Grants2$3,000$1,050bookregistration fee waived
Gov. Relations Travel Grants1$1,500$593bookregistration fee waived
Global Travel Grants4$8,020
Community Grants1$5,000
AES 2026 Meeting Travel Grants4$7,500

Schedule J IRS990ScheduleJ

FieldValueIRS element (for citing)
Independent ConsultantYes (X)IndependentConsultantInd
Compensation SurveyYes (X)CompensationSurveyInd
Board Or Committee ApprovalYes (X)BoardOrCommitteeApprovalInd
Severance PaymentfalseSeverancePaymentInd
Supplemental Nonqual Rtr PlanfalseSupplementalNonqualRtrPlanInd
Equity Based Comp ArrngmfalseEquityBasedCompArrngmInd
Comp Based On Revenue Of Flng OrgfalseCompBasedOnRevenueOfFlngOrgInd
Comp Bsd On Rev Related OrgsfalseCompBsdOnRevRelatedOrgsInd
Comp Bsd Net Earns Flng OrgfalseCompBsdNetEarnsFlngOrgInd
Comp Bsd Net Earns Rltd OrgsfalseCompBsdNetEarnsRltdOrgsInd
Any Non Fixed PaymentsfalseAnyNonFixedPaymentsInd
Initial Contract ExceptionfalseInitialContractExceptionInd

Rltd Org Officer Trst Key Empl RltdOrgOfficerTrstKeyEmplGrp (2 entries)

TitleTitleTxtBase Compensation Filing OrgBaseCompensationFilingOrgAmtDeferred Compensation Flng OrgDeferredCompensationFlngOrgAmtNontaxable Benefits Filing OrgNontaxableBenefitsFilingOrgAmtTotal Compensation Filing OrgTotalCompensationFilingOrgAmt
Andria Marcus
Meetings Director$135,966$12,237$11,233$159,436
Nan Broadbent
Executive Dir.$321,966$28,977$1,498$352,441

Schedule O IRS990ScheduleO

Supplemental Information Detail SupplementalInformationDetail (8 entries)

Form And Line ReferenceFormAndLineReferenceDescExplanationExplanationTxt
Form 990, Part VI, Section A, Line 6The Organization is composed of members who pay a membership fee.
Form 990, Part VI, Section A, Line 7aThe Organization is composed of members who vote to elect Directors annually.
Form 990, Part VI, Section A, Line 7bthe membership is required to approve certain governance actions, such as creating terms for the two appointment positions.
Form 990, Part VI, Section B, Line 11bThe Board and finance team reviews the documents, and comments are collected, reviewed and sent to the auditor.
Form 990, Part VI, Section B, Line 12cWe ask the members of the board of directors (annually) and editorial board members (every three years) to complete a form that identifies any conflicts of interest.
Form 990, Part VI, Section B, Line 15aThe management committee determines compensation.
Form 990, Part VI, Section B, Line 15bThe consultant benchmarked the performance and tenure of each person, providing compensation range, against similar positions, adjusting for the California market.
Form 990, Part VI, Section C, Line 19Our Bylaws are posted in the public area of our website. Our audited financial statements are published annually in our journal, Seismological Research Letters (SRL). Minutes of our annual Board of Directors meeting are published in SRL as well. Our Board policies, including the Conflict of Interest Policy, are posted in the leadership section of our website as are minutes of Board conference calls, key committees, etc. Our Form 990 is available by request.

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