SOCIETY OF INTERVENTIONAL ONCOLOGY INC: Form 990, tax year 2022

View the entire original 990 at ProPublica ↗

Organization: SOCIETY OF INTERVENTIONAL ONCOLOGY INC (EIN 41-2161648)
Tax period: 2022-01-01 to 2022-12-31
Filed: 2023-11-07
IRS object ID: 202303119349302770
Schema version: 2022v5.0
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
Form 990
Schedule B
Schedule C
Schedule D
Schedule I
Schedule O

Return header ReturnHeader

Field	Value	IRS element (for citing)
Return	2023-11-07T15:02:40-06:00	ReturnTs
Tax Period End	2022-12-31	TaxPeriodEndDt

Preparer Firm PreparerFirmGrp

Field	Value	IRS element (for citing)
Preparer Firm EIN	521853933	PreparerFirmEIN

Preparer Firm Name PreparerFirmName

Field	Value	IRS element (for citing)
Business Name Line1	JM&M	BusinessNameLine1Txt

Preparer US Address PreparerUSAddress

Field	Value	IRS element (for citing)
Address Line1	10500 LITTLE PATUXENT PARKWAY SUITE	AddressLine1Txt
Address Line2	770	AddressLine2Txt
City	COLUMBIA	CityNm
State Abbreviation	MD	StateAbbreviationCd
ZIP	21044	ZIPCd

Field	Value	IRS element (for citing)
Return Type	990	ReturnTypeCd
Tax Period Begin	2022-01-01	TaxPeriodBeginDt

Filer Filer

Field	Value	IRS element (for citing)
EIN	412161648	EIN

Business Name BusinessName

Field	Value	IRS element (for citing)
Business Name Line1	SOCIETY OF INTERVENTIONAL ONCOLOGY INC	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Business Name Control	SOCI	BusinessNameControlTxt
Phone	2023671164	PhoneNum

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	2001 K STREET NW 300	AddressLine1Txt
City	WASHINGTON	CityNm
State Abbreviation	DC	StateAbbreviationCd
ZIP	20006	ZIPCd

Business Officer BusinessOfficerGrp

Field	Value	IRS element (for citing)
Person	JENA EBERLY STACK	PersonNm
Person Title	EXECUTIVE DIRECTOR	PersonTitleTxt
Phone	2023671164	PhoneNum
Signature	2023-11-02	SignatureDt
Discuss With Paid Preparer	Yes (1)	DiscussWithPaidPreparerInd

Signing Officer SigningOfficerGrp

Person Full Name PersonFullName

Field	Value	IRS element (for citing)
Person First	JENA	PersonFirstNm
Person Last	EBERLY STACK	PersonLastNm

Field	Value	IRS element (for citing)
SSN	999009999	SSN

Field	Value	IRS element (for citing)
IRS Responsible Prty Info Curr	0	IRSResponsiblePrtyInfoCurrInd

Preparer Person PreparerPersonGrp

Field	Value	IRS element (for citing)
PTIN	P01608821	PTIN
Phone	4108840220	PhoneNum

Additional Filer Information AdditionalFilerInformation

Trusted Customer TrustedCustomerGrp

Field	Value	IRS element (for citing)
Trusted Customer	2	TrustedCustomerCd
Authentication Assurance Level	AAL1	AuthenticationAssuranceLevelCd
Identity Assurance Level	IAL1	IdentityAssuranceLevelCd

Field	Value	IRS element (for citing)
Tax	2022	TaxYr
Build TS	2023-04-26 12:10:37Z	BuildTS

Form 990 IRS990

Field	Value	IRS element (for citing)
Principal Officer	JENA EBERLY STACK	PrincipalOfficerNm

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	2001 K STREET NW 300	AddressLine1Txt
City	WASHINGTON	CityNm
State Abbreviation	DC	StateAbbreviationCd
ZIP	20006	ZIPCd

Field	Value	IRS element (for citing)
Gross Receipts	$2,079,807	GrossReceiptsAmt
Group Return For Affiliates	0	GroupReturnForAffiliatesInd
Organization501c	Yes (X)	Organization501cInd
Website Address	WWW.SIO-CENTRAL.ORG	WebsiteAddressTxt
Type Of Organization Corp	Yes (X)	TypeOfOrganizationCorpInd
Formation	2005	FormationYr
Legal Domicile State	MA	LegalDomicileStateCd
Activity Or Mission	TO ADVANCE INTERVENTIONAL ONCOLOGY BY DEVELOPING EVIDENCE SUPPORTING IO THERAPIES, EDUCATING IO PRACTITIONERS, AND IMPROVING PATIENT ACCESS TO IO THERAPIES.	ActivityOrMissionDesc
Voting Members Governing Body	10	VotingMembersGoverningBodyCnt
Voting Members Independent	10	VotingMembersIndependentCnt
Total Employee	0	TotalEmployeeCnt
Total Volunteers	12	TotalVolunteersCnt
Total Gross UBI	$0	TotalGrossUBIAmt
Net Unrelated Bus Txbl Incm	$0	NetUnrelatedBusTxblIncmAmt
PY Contributions Grants	$5,212,000	PYContributionsGrantsAmt
CY Contributions Grants	$316,500	CYContributionsGrantsAmt
PY Program Service Revenue	$854,765	PYProgramServiceRevenueAmt
CY Program Service Revenue	$1,742,070	CYProgramServiceRevenueAmt
PY Investment Income	$1,018	PYInvestmentIncomeAmt
CY Investment Income	$21,237	CYInvestmentIncomeAmt
PY Other Revenue	$93	PYOtherRevenueAmt
CY Other Revenue	$0	CYOtherRevenueAmt
PY Total Revenue	$6,067,876	PYTotalRevenueAmt
CY Total Revenue	$2,079,807	CYTotalRevenueAmt
PY Grants And Similar Paid	$7,000	PYGrantsAndSimilarPaidAmt
CY Grants And Similar Paid	$30,578	CYGrantsAndSimilarPaidAmt
PY Benefits Paid To Members	$0	PYBenefitsPaidToMembersAmt
CY Benefits Paid To Members	$0	CYBenefitsPaidToMembersAmt
PY Salaries Comp Emp Bnft Paid	$0	PYSalariesCompEmpBnftPaidAmt
CY Salaries Comp Emp Bnft Paid	$0	CYSalariesCompEmpBnftPaidAmt
PY Total Prof Fndrsng Expns	$0	PYTotalProfFndrsngExpnsAmt
CY Total Prof Fndrsng Expns	$0	CYTotalProfFndrsngExpnsAmt
CY Total Fundraising Expense	$0	CYTotalFundraisingExpenseAmt
PY Other Expenses	$979,567	PYOtherExpensesAmt
CY Other Expenses	$2,149,448	CYOtherExpensesAmt
PY Total Expenses	$986,567	PYTotalExpensesAmt
CY Total Expenses	$2,180,026	CYTotalExpensesAmt
PY Revenues Less Expenses	$5,081,309	PYRevenuesLessExpensesAmt
CY Revenues Less Expenses	-$100,219	CYRevenuesLessExpensesAmt
Total Assets BOY	$7,137,936	TotalAssetsBOYAmt
Total Assets EOY	$7,644,301	TotalAssetsEOYAmt
Total Liabilities BOY	$500,070	TotalLiabilitiesBOYAmt
Total Liabilities EOY	$1,106,654	TotalLiabilitiesEOYAmt
Net Assets Or Fund Balances BOY	$6,637,866	NetAssetsOrFundBalancesBOYAmt
Net Assets Or Fund Balances EOY	$6,537,647	NetAssetsOrFundBalancesEOYAmt
Info In Schedule O Part III	Yes (X)	InfoInScheduleOPartIIIInd
Mission	TO ADVANCE INTERVENTIONAL ONCOLOGY AS THE FOURTH PILLAR OF CANCER THERAPY ALONGSIDE MEDICAL, SURGICAL, AND RADIATION ONCOLOGY WORLDWIDE.	MissionDesc
Significant New Program Srvc	0	SignificantNewProgramSrvcInd
Significant Change	0	SignificantChangeInd
Desc	ANNUAL MEETING - SIO HOLDS AN ANNUAL MULTIDISCIPLINARY SCIENTIFIC MEETING, WITH EXHIBITS ON INTERVENTIONAL ONCOLOGY ISSUES. THE MEETING PRESENTS CURRENT INFORMATION ON RESEARCH, NEW PRODUCTS, AND NEW TECHNIQUES IN THE INTERVENTIONAL ONCOLOGY FIELD.	Desc

Prog Srvc Accom Acty2 ProgSrvcAccomActy2Grp

Field	Value	IRS element (for citing)
Desc	PUBLICATIONS - SIO PUBLISHES VARIOUS RESOURCES RELATED TO INTERVENTIONAL ONCOLOGY INCLUDING IO PERSPECTIVES, IO INSIGHTS, AND THE INSIDER, A MONTHLY PUBLICATIONS DIGEST.	Desc

Prog Srvc Accom Acty3 ProgSrvcAccomActy3Grp

Field	Value	IRS element (for citing)
Desc	OTHER MEETINGS - SIO REGULARLY HOLDS ADDITIONAL MASTER CLASSES UNDER THE IO UNIVERSITY FOR THE PURPOSE OF PROVIDING TRAINING IN INTERVENTIONAL ONCOLOGY RELEVANT TOPICS.	Desc

Prog Srvc Accom Acty Other ProgSrvcAccomActyOtherGrp (3 entries)

DescDesc
ONLINE COMMUNITY - THE SOCIETY OF INTERVENTIONAL ONCOLOGY (SIO) PRESENTS AN INTERVENTIONAL ONCOLOGY (IO) ONLINE COMMUNITY DESIGNED TO ESTABLISH IO CANCER THERAPY AS THE 4TH PILLAR OF CANCER THERAPY ALONGSIDE MEDICAL, SURGICAL, AND RADIATION ONCOLOGY WORLDWIDE.
RESEARCH GRANTS - SIO FUNDS SEVERAL RESEARCH GRANTS SINCE 2017 THAT ARE ONGOING PROJECTS. THESE GRANTS ARE DESIGNED TO FUND RESEARCH EVALUATING AND ADVANCING THE INTERACTIONS BETWEEN TWO PREMIER INTERVENTIONAL ONCOLOGIC THERAPIES AND ADVANCING INTERVENTIONAL ONCOLOGY WORLDWIDE. OTHER GRANTS INCLUDE GRANTS FOR INTERVENTIONAL ONCOLOGY/IMMUNO-ONCOLOGY.
EDUCATION & TRAINING - SIO PROVIDES EDUCATIONAL PROGRAMS AND VIRTUAL MASTER CLASSES DEVELOPED FOR MEMBERS.

Field	Value	IRS element (for citing)
Described In Section501c3	0	DescribedInSection501c3Ind
Schedule B Required	Yes (1)	ScheduleBRequiredInd
Political Campaign Acty	0	PoliticalCampaignActyInd
Subject To Proxy Tax	Yes (1)	SubjectToProxyTaxInd
Donor Advised Fund	0	DonorAdvisedFundInd
Conservation Easements	0	ConservationEasementsInd
Collections Of Art	0	CollectionsOfArtInd
Credit Counseling	0	CreditCounselingInd
Donor Rstr Or Quasi Endowments	0	DonorRstrOrQuasiEndowmentsInd
Report Land Building Equipment	0	ReportLandBuildingEquipmentInd
Report Investments Other Sec	0	ReportInvestmentsOtherSecInd
Report Program Related Invst	0	ReportProgramRelatedInvstInd
Report Other Assets	0	ReportOtherAssetsInd
Report Other Liabilities	0	ReportOtherLiabilitiesInd
Include FIN48 Footnote	0	IncludeFIN48FootnoteInd
Independent Audit Fincl Stmt	Yes (1)	IndependentAuditFinclStmtInd
Consolidated Audit Fincl Stmt	0	ConsolidatedAuditFinclStmtInd
School Operating	0	SchoolOperatingInd
Foreign Office	0	ForeignOfficeInd
Foreign Activities	0	ForeignActivitiesInd
More Than5000 K To Org	0	MoreThan5000KToOrgInd
More Than5000 K To Individuals	0	MoreThan5000KToIndividualsInd
Professional Fundraising	0	ProfessionalFundraisingInd
Fundraising Activities	0	FundraisingActivitiesInd
Gaming Activities	0	GamingActivitiesInd
Operate Hospital	0	OperateHospitalInd
Grants To Organizations	0	GrantsToOrganizationsInd
Grants To Individuals	Yes (1)	GrantsToIndividualsInd
Schedule J Required	0	ScheduleJRequiredInd
Tax Exempt Bonds	0	TaxExemptBondsInd
Loan Outstanding	0	LoanOutstandingInd
Grant To Related Person	0	GrantToRelatedPersonInd
Business Rln With Org Mem	0	BusinessRlnWithOrgMemInd
Business Rln With Fam Mem	0	BusinessRlnWithFamMemInd
Business Rln With35 Ctrl Ent	0	BusinessRlnWith35CtrlEntInd
Deductible Non Cash Contri	0	DeductibleNonCashContriInd
Deductible Art Contribution	0	DeductibleArtContributionInd
Terminate Operations	0	TerminateOperationsInd
Partial Liquidation	0	PartialLiquidationInd
Disregarded Entity	0	DisregardedEntityInd
Related Entity	0	RelatedEntityInd
Related Organization Ctrl Ent	0	RelatedOrganizationCtrlEntInd
Activities Conducted Prtshp	0	ActivitiesConductedPrtshpInd
Schedule O Required	Yes (1)	ScheduleORequiredInd
IRP Document	55	IRPDocumentCnt
IRP Document W2 G	0	IRPDocumentW2GCnt
Backup Wthld Compliance	Yes (1)	BackupWthldComplianceInd
Employee	0	EmployeeCnt
Unrelated Bus Incm Over Limit	0	UnrelatedBusIncmOverLimitInd
Foreign Financial Account	0	ForeignFinancialAccountInd
Prohibited Tax Shelter Trans	0	ProhibitedTaxShelterTransInd
Taxable Party Notification	0	TaxablePartyNotificationInd
Nondeductible Contributions	0	NondeductibleContributionsInd
Indoor Tanning Services	0	IndoorTanningServicesInd
Subj To Tax Rmnrtn Ex Prcht Pymt	0	SubjToTaxRmnrtnExPrchtPymtInd
Subject To Excs Tax Net Invst Inc	0	SubjectToExcsTaxNetInvstIncInd
Info In Schedule O Part VI	Yes (X)	InfoInScheduleOPartVIInd
Governing Body Voting Members	10	GoverningBodyVotingMembersCnt
Independent Voting Member	10	IndependentVotingMemberCnt
Family Or Business Rln	0	FamilyOrBusinessRlnInd
Delegation Of Mgmt Duties	Yes (1)	DelegationOfMgmtDutiesInd
Change To Org Documents	0	ChangeToOrgDocumentsInd
Material Diversion Or Misuse	0	MaterialDiversionOrMisuseInd
Members Or Stockholders	Yes (1)	MembersOrStockholdersInd
Election Of Board Members	Yes (1)	ElectionOfBoardMembersInd
Decisions Subject To Approva	0	DecisionsSubjectToApprovaInd
Minutes Of Governing Body	Yes (1)	MinutesOfGoverningBodyInd
Minutes Of Committees	Yes (1)	MinutesOfCommitteesInd
Officer Mailing Address	0	OfficerMailingAddressInd
Local Chapters	0	LocalChaptersInd
Form990 Provided To Gvrn Body	Yes (1)	Form990ProvidedToGvrnBodyInd
Conflict Of Interest Policy	Yes (1)	ConflictOfInterestPolicyInd
Annual Disclosure Covered Prsn	0	AnnualDisclosureCoveredPrsnInd
Regular Monitoring Enfrc	0	RegularMonitoringEnfrcInd
Whistleblower Policy	Yes (1)	WhistleblowerPolicyInd
Document Retention Policy	Yes (1)	DocumentRetentionPolicyInd
Compensation Process CEO	0	CompensationProcessCEOInd
Compensation Process Other	0	CompensationProcessOtherInd
Investment In Joint Venture	0	InvestmentInJointVentureInd
States Where Copy Of Return Is Fld	DC	StatesWhereCopyOfReturnIsFldCd
Upon Request	Yes (X)	UponRequestInd

Books In Care Of Detail BooksInCareOfDetail

Business Name BusinessName

Field	Value	IRS element (for citing)
Business Name Line1	SMITHBUCKLIN CORPORATION	BusinessNameLine1Txt

Field	Value	IRS element (for citing)
Phone	2023671164	PhoneNum

US Address USAddress

Field	Value	IRS element (for citing)
Address Line1	2001 K STREET NW 300	AddressLine1Txt
City	WASHINGTON	CityNm
State Abbreviation	DC	StateAbbreviationCd
ZIP	20006	ZIPCd

Field	Value	IRS element (for citing)
No Listed Persons Compensated	Yes (X)	NoListedPersonsCompensatedInd

Form990 Part VII Section A Form990PartVIISectionAGrp (11 entries)

TitleTitleTxt	Average Hours Per WeekAverageHoursPerWeekRt	Individual Trustee Or DirectorIndividualTrusteeOrDirectorInd	OfficerOfficerInd	Reportable Comp From OrgReportableCompFromOrgAmt	Reportable Comp From Rltd OrgReportableCompFromRltdOrgAmt	Other CompensationOtherCompensationAmt
MATT CALLSTROM
PRESIDENT	2.00	Yes (X)	Yes (X)	$0	$0	$0
MUNEEB AHMED
PRESIDENT-ELECT	2.00	Yes (X)	Yes (X)	$0	$0	$0
WILLIAM RILLING
PAST PRESIDENT	2.00	Yes (X)	Yes (X)	$0	$0	$0
ALEXIS KELEKIS MD
TREASURER	2.00	Yes (X)	Yes (X)	$0	$0	$0
UEI PUA
BOARD MEMBER	1.00	Yes (X)		$0	$0	$0
EDWARD KIM MD
BOARD MEMBER	1.00	Yes (X)		$0	$0	$0
COSTI SOFOCLEOUS
BOARD MEMBER	1.00	Yes (X)		$0	$0	$0
SARAH WHITE
BOARD MEMBER	1.00	Yes (X)		$0	$0	$0
JACK JENNINGS
BOARD MEMBER	1.00	Yes (X)		$0	$0	$0
DAVID BREEN
BOARD MEMBER	1.00	Yes (X)		$0	$0	$0
JENA EBERLY STACK
EXECUTIVE DIRECTOR	20.00		Yes (X)	$0	$0	$0

Field	Value	IRS element (for citing)
Total Reportable Comp From Org	$0	TotalReportableCompFromOrgAmt
Tot Reportable Comp Rltd Org	$0	TotReportableCompRltdOrgAmt
Total Other Compensation	$0	TotalOtherCompensationAmt
Indiv Rcvd Greater Than100 K	0	IndivRcvdGreaterThan100KCnt
Former Ofcr Employees Listed	0	FormerOfcrEmployeesListedInd
Total Comp Greater Than150 K	0	TotalCompGreaterThan150KInd
Compensation From Other Srcs	0	CompensationFromOtherSrcsInd

Contractor Compensation ContractorCompensationGrp (2 entries)

Address Line1ContractorAddress/USAddress/AddressLine1Txt	CityContractorAddress/USAddress/CityNm	State AbbreviationContractorAddress/USAddress/StateAbbreviationCd	ZIPContractorAddress/USAddress/ZIPCd	ServicesServicesDesc	CompensationCompensationAmt
SMITHBUCKLIN CORPORATION
2001 K STREET NW 300	WASHINGTON	DC	20006	MANAGEMENT (INCL. ED COMP.)	$865,361
SUSAN LOVE
8605 SANTA MONICA BLVD	HOLLYWOOD	CA	90069	CLINICAL RESEARCH SERVICES	$162,322

Field	Value	IRS element (for citing)
Cntrct Rcvd Greater Than100 K	2	CntrctRcvdGreaterThan100KCnt
All Other Contributions	$316,500	AllOtherContributionsAmt
Total Contributions	$316,500	TotalContributionsAmt

Program Service Revenue ProgramServiceRevenueGrp (5 entries)

DescDesc	BusinessBusinessCd	Total Revenue ColumnTotalRevenueColumnAmt	Related Or Exempt Func IncomeRelatedOrExemptFuncIncomeAmt
ANNUAL MEETING	900099	$1,069,241	$1,069,241
MEMBERSHIP DUES	900099	$381,720	$381,720
ONLINE LEARNING	900099	$116,750	$116,750
OTHER MEETINGS	900099	$90,000	$90,000
PUBLICATIONS	900099	$84,359	$84,359

Field	Value	IRS element (for citing)
Total Program Service Revenue	$1,742,070	TotalProgramServiceRevenueAmt

Investment Income InvestmentIncomeGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$21,237	TotalRevenueColumnAmt
Exclusion	$21,237	ExclusionAmt

Total Revenue TotalRevenueGrp

Field	Value	IRS element (for citing)
Total Revenue Column	$2,079,807	TotalRevenueColumnAmt
Related Or Exempt Func Income	$1,742,070	RelatedOrExemptFuncIncomeAmt
Unrelated Business Revenue	$0	UnrelatedBusinessRevenueAmt
Exclusion	$21,237	ExclusionAmt

Field	Value	IRS element (for citing)
Info In Schedule O Part IX	Yes (X)	InfoInScheduleOPartIXInd

Grants To Domestic Individuals GrantsToDomesticIndividualsGrp

Field	Value	IRS element (for citing)
Total	$30,578	TotalAmt

Fees For Services Management FeesForServicesManagementGrp

Field	Value	IRS element (for citing)
Total	$797,526	TotalAmt

Fees For Services Other FeesForServicesOtherGrp

Field	Value	IRS element (for citing)
Total	$537,391	TotalAmt

Advertising AdvertisingGrp

Field	Value	IRS element (for citing)
Total	$1,856	TotalAmt

Office Expenses OfficeExpensesGrp

Field	Value	IRS element (for citing)
Total	$47,756	TotalAmt

Travel TravelGrp

Field	Value	IRS element (for citing)
Total	$61,280	TotalAmt

Conferences Meetings ConferencesMeetingsGrp

Field	Value	IRS element (for citing)
Total	$550,461	TotalAmt

Insurance InsuranceGrp

Field	Value	IRS element (for citing)
Total	$22,477	TotalAmt

Other Expenses OtherExpensesGrp (4 entries)

DescDesc	TotalTotalAmt
RESEARCH	$97,432
LICENSES AND FEES	$20,191
MISCELLANEOUS	$12,978
DUES AND SUBSCRIPTIONS	$100

Total Functional Expenses TotalFunctionalExpensesGrp

Field	Value	IRS element (for citing)
Total	$2,180,026	TotalAmt

Cash Non Interest Bearing CashNonInterestBearingGrp

Field	Value	IRS element (for citing)
BOY	$2,615,288	BOYAmt
EOY	$1,037,538	EOYAmt

Savings And Temp Cash Invst SavingsAndTempCashInvstGrp

Field	Value	IRS element (for citing)
BOY	$1,303,736	BOYAmt
EOY	$4,824,799	EOYAmt

Pledges And Grants Receivable PledgesAndGrantsReceivableGrp

Field	Value	IRS element (for citing)
BOY	$3,000,000	BOYAmt
EOY	$1,500,000	EOYAmt

Accounts Receivable AccountsReceivableGrp

Field	Value	IRS element (for citing)
BOY	$93,585	BOYAmt
EOY	$92,000	EOYAmt

Prepaid Expenses Defrd Charges PrepaidExpensesDefrdChargesGrp

Field	Value	IRS element (for citing)
BOY	$125,327	BOYAmt
EOY	$189,964	EOYAmt

Total Assets TotalAssetsGrp

Field	Value	IRS element (for citing)
BOY	$7,137,936	BOYAmt
EOY	$7,644,301	EOYAmt

Accounts Payable Accr Expnss AccountsPayableAccrExpnssGrp

Field	Value	IRS element (for citing)
BOY	$8,280	BOYAmt
EOY	$167,839	EOYAmt

Grants Payable GrantsPayableGrp

Field	Value	IRS element (for citing)
BOY	$174,900	BOYAmt
EOY	$164,900	EOYAmt

Deferred Revenue DeferredRevenueGrp

Field	Value	IRS element (for citing)
BOY	$316,890	BOYAmt
EOY	$773,915	EOYAmt

Total Liabilities TotalLiabilitiesGrp

Field	Value	IRS element (for citing)
BOY	$500,070	BOYAmt
EOY	$1,106,654	EOYAmt

Field	Value	IRS element (for citing)
Organization Follows FASB117	Yes (X)	OrganizationFollowsFASB117Ind

No Donor Restriction Net Assets NoDonorRestrictionNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$467,393	BOYAmt
EOY	$788,198	EOYAmt

Donor Restriction Net Assets DonorRestrictionNetAssetsGrp

Field	Value	IRS element (for citing)
BOY	$6,170,473	BOYAmt
EOY	$5,749,449	EOYAmt

Total Net Assets Fund Balance TotalNetAssetsFundBalanceGrp

Field	Value	IRS element (for citing)
BOY	$6,637,866	BOYAmt
EOY	$6,537,647	EOYAmt

Tot Liab Net Assets Fund Balance TotLiabNetAssetsFundBalanceGrp

Field	Value	IRS element (for citing)
BOY	$7,137,936	BOYAmt
EOY	$7,644,301	EOYAmt

Field	Value	IRS element (for citing)
Reconcilation Revenue Expnss	-$100,219	ReconcilationRevenueExpnssAmt
Other Changes In Net Assets	$0	OtherChangesInNetAssetsAmt
Info In Schedule O Part XII	Yes (X)	InfoInScheduleOPartXIIInd
Method Of Accounting Accrual	Yes (X)	MethodOfAccountingAccrualInd
Accountant Compile Or Review	0	AccountantCompileOrReviewInd
FS Audited	Yes (1)	FSAuditedInd

FS Audited Basis FSAuditedBasisGrp

Field	Value	IRS element (for citing)
Separate Basis Fincl Stmt	Yes (X)	SeparateBasisFinclStmtInd

Field	Value	IRS element (for citing)
Audit Committee	Yes (1)	AuditCommitteeInd
Federal Grant Audit Required	0	FederalGrantAuditRequiredInd

Schedule B IRS990ScheduleB

Contributor Information ContributorInformationGrp

Field	Value	IRS element (for citing)
Contributor	RESTRICTED	ContributorNum

Contributor Business Name ContributorBusinessName

Field	Value	IRS element (for citing)
Business Name Line1	RESTRICTED	BusinessNameLine1

Contributor US Address ContributorUSAddress

Field	Value	IRS element (for citing)
Address Line1	RESTRICTED	AddressLine1
Address Line2	RESTRICTED	AddressLine2
City	RESTRICTED	City
State	RESTRICTED	State
ZIP Code	RESTRICTED	ZIPCode

Field	Value	IRS element (for citing)
Total Contributions	RESTRICTED	TotalContributionsAmt

Schedule C IRS990ScheduleC

Field	Value	IRS element (for citing)
Substantially All Dues Nonded	0	SubstantiallyAllDuesNondedInd
Only In House Lobbying	Yes (1)	OnlyInHouseLobbyingInd
Agree Carryover Prior Year	0	AgreeCarryoverPriorYearInd

Schedule D IRS990ScheduleD

Field	Value	IRS element (for citing)
Total Book Value Land Buildings	$0	TotalBookValueLandBuildingsAmt
Footnote Text	Yes (X)	FootnoteTextInd
Total Rev Etc Audited Fincl Stmt	$2,079,807	TotalRevEtcAuditedFinclStmtAmt
Revenue Not Reported	$0	RevenueNotReportedAmt
Revenue Subtotal	$2,079,807	RevenueSubtotalAmt
Revenue Not Reported Fincl Stmt	$0	RevenueNotReportedFinclStmtAmt
Total Revenue Per Form990	$2,079,807	TotalRevenuePerForm990Amt
Tot Expns Etc Audited Fincl Stmt	$2,180,026	TotExpnsEtcAuditedFinclStmtAmt
Expenses Not Reported	$0	ExpensesNotReportedAmt
Expenses Subtotal	$2,180,026	ExpensesSubtotalAmt
Expenses Not Rpt Fincl Stmt	$0	ExpensesNotRptFinclStmtAmt
Total Expenses Per Form990	$2,180,026	TotalExpensesPerForm990Amt

Supplemental Information Detail SupplementalInformationDetail

Field	Value	IRS element (for citing)
Form And Line Reference	PART X, LINE 2:	FormAndLineReferenceDesc
Explanation	SIO BELIEVES THAT IT HAS APPROPRIATE SUPPORT FOR ANY TAX POSITIONS TAKEN, AND AS SUCH, DOES NOT HAVE ANY UNCERTAIN TAX POSITIONS THAT ARE MATERIAL TO THE FINANCIAL STATEMENTS OR THAT WOULD HAVE AN EFFECT ON ITS TAX-EXEMPT STATUS. THERE ARE NO UNRECOGNIZED TAX BENEFITS OR LIABILITIES THAT NEED TO BE RECORDED.	ExplanationTxt

Schedule I IRS990ScheduleI

Field	Value	IRS element (for citing)
Grant Records Maintained	Yes (1)	GrantRecordsMaintainedInd

Grants Other Asst To Indiv In US GrantsOtherAsstToIndivInUSGrp

Field	Value	IRS element (for citing)
Grant Type	TRAVEL STIPEND	GrantTypeTxt
Recipient	37	RecipientCnt
Cash Grant	$30,578	CashGrantAmt

Supplemental Information Detail SupplementalInformationDetail

Field	Value	IRS element (for citing)
Form And Line Reference	PART I, LINE 2:	FormAndLineReferenceDesc
Explanation	ASSISTANCE IS IN THE FORM OF TRAVEL STIPENDS AND FREE REGISTRATION TO THE SIO ANNUAL SCIENTIFIC MEETING, PLUS FUNDING TO SUPPORT THE START OF A RESEARCH PROJECT UNDER THE GUIDANCE OF A MENTOR. MINIMAL MONITORING IS REQUIRED.	ExplanationTxt

Schedule O IRS990ScheduleO

Supplemental Information Detail SupplementalInformationDetail (7 entries)

Form And Line ReferenceFormAndLineReferenceDesc	ExplanationExplanationTxt
FORM 990, PART VI, SECTION A, LINE 3	THE ORGANIZATION HAS ENTERED INTO A MANAGEMENT CONTRACT WITH SMITHBUCKLIN CORPORATION. UNDER THE TERMS OF THIS CONTRACT, SIO MAKES PAYMENTS TO SMITHBUCKLIN WHICH COVER STAFF SALARIES AND OTHER OVERHEAD EXPENSES. THE FEES INCURRED BY SIO DURING THE YEAR ENDED DECEMBER 31, 2021 WERE $700,695 FOR THE FOLLOWING: EXECUTIVE MANAGEMENT OF $123,600, MEMBERSHIP AND OPERATIONS SERVICES, EVENT SERVICES, MARKETING AND COMMUNICATIONS SERVICES, CREATIVE AND DESIGN SERVICES, EDUCATION AND LEARNING SERVICES, FINANCIAL MANAGEMENT AND ACCOUNTING SERVICES, INFORMATION TECHNOLOGY SERVICES, AND VALUE ADDED SERVICES. SMITHBUCKLIN'S PERFORMANCE UNDER THIS AGREEMENT IS MONITORED BY THE BOARD OF SIO.
FORM 990, PART VI, SECTION A, LINE 6	THE MEMBERSHIP OF THE SOCIETY SHALL CONSIST OF: ACTIVE - DUES PAYING INDIVIDUALS WHO ARE PHYSICIANS WHO PRACTICE INTERVENTIONAL ONCOLOGY OR A RELATED FIELD AND PHD LEVEL SCIENTISTS. ACTIVE MEMBERS ARE VOTING MEMBERS WHO CAN HOLD OFFICE OR SERVE AS COMMITTEE CHAIRS. AFFILIATE - DUES PAYING INDIVIDUALS WHO ARE NOT PHYSICIANS, BUT ARE RELATED MEDICAL PROFESSIONALS, RESEARCH ASSISTANTS, OR HEALTH SPECIALISTS WHO SUPPORT ACTIVITIES RELATED TO INTERVENTIONAL ONCOLOGY. AFFILIATE MEMBERS CANNOT VOTE OR HOLD OFFICE, BUT CAN SERVE ON A COMMITTEE. RESIDENT/FELLOW - DUES PAYING INDIVIDUALS IN THEIR RESIDENCY OR FELLOWSHIP. RESIDENTS AND FELLOWS CANNOT VOTE, SERVE ON A COMMITTEE, OR HOLD OFFICE. STUDENT - DUES PAYING INDIVIDUALS WHO ARE STUDENTS OF INTERVENTIONAL ONCOLOGY OR RELATED FIELD. STUDENTS CANNOT VOTE, SERVE ON A COMMITTEE, OR HOLD OFFICE.
FORM 990, PART VI, SECTION A, LINE 7A	THE ORGANIZATION'S MEMBERS ELECT THE MEMBERS OF THE BOARD OF DIRECTORS.
FORM 990, PART VI, SECTION B, LINE 11B	THE FORM 990 IS REVIEWED BY THE STAFF OF THE MANAGEMENT COMPANY, INCLUDING THE EXECUTIVE DIRECTOR, AND A COPY IS PROVIDED TO THE ENTIRE BOARD PRIOR TO FILING.
FORM 990, PART VI, SECTION C, LINE 19	THE ORGANIZATION MAKES ITS GOVERNING DOCUMENTS AND FINANCIAL STATEMENTS AVAILABLE TO THE PUBLIC UPON REQUEST.
FORM 990, PART IX, LINE 11G	SPEAKER FEE 120,018. OTHER PROFESSIONAL FEES 417,373.
FORM 990, PART XII, LINE 2C:	THE ORGANIZATION HAS NOT CHANGED ITS OVERSIGHT PROCESS OR SELECTION PROCESS OF AN INDEPENDENT ACCOUNTANT DURING THE TAX YEAR.