Nonprofit · EIN 41-2161648
SOCIETY OF INTERVENTIONAL ONCOLOGY INC
Also known as WORLD CONFERENCE FOR INTERVENTION
Tax-exempt · WASHINGTON, DC 20006
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2024 | 990 | $3,751,897 | $4,384,991 | -$633,094 | $10,052,218 | $3,198,603 | $6,853,615 |
| December 31, 2023 | 990 | $3,740,387 | $2,889,073 | $851,314 | $10,050,985 | $2,564,276 | $7,486,709 |
Financial details: 990 for the year ended December 31, 2024
Revenue
- Contributions, gifts and grants
- $237,000
- Program service revenue
- $3,124,931
- Investment income
- $371,526
- Royalties
- $18,440
- Net gain from sales of assets
- $116,803
- Other revenue
- $18,440
Expenses
- Grants and similar amounts paid
- $281,082
- Compensation of officers, directors and key employees
- $15,750
- Salaries, compensation and benefits (total)
- $15,750
- Professional fundraising fees
- $0
- Legal fees
- $10,116
- Accounting fees
- $14,200
- Travel
- $267,670
Balance sheet and other
- Total assets, start of year
- $10,050,985
- Total assets, end of year
- $10,052,218
- Total liabilities, end of year
- $3,198,603
- Net assets, end of year
- $6,853,615
- Publicly traded securities
- $6,702,182
- Net assets without donor restrictions
- $2,089,219
- Net assets with donor restrictions
- $4,764,396
- Gross receipts
- $9,121,629
- Employees
- 0
- Volunteers
- 11
- Year formed
- 2005
- State of legal domicile
- MA
From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.
Officers, directors and key employees
As listed on the 990 for the year ended December 31, 2024, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| TERENCE GADE | BOARD MEMBER AS OF JANUARY Trustee or director | 1 | $7,750 |
| EDWARD KIM | BOARD MEMBER Trustee or director | 1 | $7,000 |
| JACK JENNINGS | TREASURER Trustee or director, Officer | 2 | $1,000 |
| MUNEEB AHMED | PRESIDENT Trustee or director, Officer | 2 | $0 |
| ALEXIS KELEKIS | PRESIDENT ELECT Trustee or director, Officer | 2 | $0 |
| MATTHEW CALLSTROM | IMMEDIATE PAST PRESIDENT Trustee or director, Officer | 2 | $0 |
| SARAH WHITE | BOARD MEMBER Trustee or director | 1 | $0 |
| DAVID BREEN | BOARD MEMBER Trustee or director | 1 | $0 |
| FRANCO ORSI | BOARD MEMBER Trustee or director | 1 | $0 |
| RON ARELLANO | BOARD MEMBER Trustee or director | 1 | $0 |
| UEI PUA | BOARD MEMBER UNTIL JANUARY Trustee or director | 1 | $0 |
| JENA EBERLY STACK | EXECUTIVE DIRECTOR Officer | 20 | $0 |
990 for the year ended December 31, 2023: 12 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| MATTHEW CALLSTROM PRESIDENT | UNTIL FEB. 2023, THEN PAST PRESIDENT Trustee or director, Officer | 2 | $0 |
| MUNEEB AHMED PRESIDENT ELECT | UNTIL FEB. 2023, THEN PRESIDENT Trustee or director, Officer | 2 | $0 |
| ALEXIS KELEKIS TREASURER UNTIL | FEB. 2023, THEN PRESIDENT ELECT Trustee or director, Officer | 2 | $0 |
| JACK JENNINGS BOARD MEMBER | UNTIL FEB. 2023, THEN TREASURER Trustee or director, Officer | 2 | $0 |
| UEI PUA | BOARD MEMBER Trustee or director | 1 | $0 |
| EDWARD KIM | BOARD MEMBER Trustee or director | 1 | $0 |
| SARAH WHITE | BOARD MEMBER Trustee or director | 1 | $0 |
| DAVID BREEN | BOARD MEMBER AS OF FEB. 2023 Trustee or director | 1 | $0 |
| FRANCO ORSI | BOARD MEMBER AS OF FEB. 2023 Trustee or director | 1 | $0 |
| RON ARELLANO | BOARD MEMBER AS OF FEB. 2023 Trustee or director | 1 | $0 |
| COSTI SOFOCLEOUS | BOARD MEMBER UNTIL JAN. 2023 Trustee or director | 1 | $0 |
| JENA EBERLY STACK | EXECUTIVE DIRECTOR Officer | 20 | $0 |
Address and contacts
- Address (IRS master file)
- 2001 K STREET NW 300, WASHINGTON, DC 20006-1037
- Principal officer (990 for 2024)
- JENA EBERLY STACK, 2001 K STREET NW 300, WASHINGTON, DC 20006
- Signed the 990
- JENA EBERLY STACK, EXECUTIVE DIRECTOR
- Phone
- (202) 367-1164
- Website
- WWW.SIO-CENTRAL.ORG
- Return prepared by
- JM&M
Mission
TO ADVANCE INTERVENTIONAL ONCOLOGY AS THE FOURTH PILLAR OF CANCER THERAPY ALONGSIDE MEDICAL, SURGICAL, AND RADIATION ONCOLOGY WORLDWIDE.
Program accomplishments
- 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.
- 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.
- OTHER MEETINGS - SIO REGULARLY HOLDS ADDITIONAL MASTER CLASSES UNDER THE IO UNIVERSITY FOR THE PURPOSE OF PROVIDING TRAINING IN INTERVENTIONAL ONCOLOGY RELEVANT TOPICS.
- PUBLICATIONS - SIO PUBLISHES VARIOUS RESOURCES RELATED TO INTERVENTIONAL ONCOLOGY INCLUDING IO PERSPECTIVES, IO INSIGHTS, AND THE INSIDER, A MONTHLY PUBLICATIONS DIGEST.
- 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 THERAPYALONGSIDE MEDICAL, SURGICAL, AND RADIATION ONCOLOGY WORLDWIDE.
What it must file and when
IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | Not on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 41-2161648
- Tax-exempt status
- 501(c)(6): Business league or chamber of commerce
- Donations deductible
- No
- Exempt since
- 2006
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Voluntary health associations and medical disciplines (G033)
- Assets (IRS master file)
- $10,052,218
- Income (IRS master file)
- $9,121,629
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2024 | $3,751,897 | $4,384,991 | $10,052,218 | XML |
| 990 | December 2023 | $3,740,387 | $2,889,073 | $10,050,985 | XML |
| 990 | December 2022 | $2,079,807 | $2,180,026 | $7,644,301 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS (search EIN 41-2161648).
Questions about SOCIETY OF INTERVENTIONAL ONCOLOGY INC
- What is the EIN of SOCIETY OF INTERVENTIONAL ONCOLOGY INC?
- The employer identification number (EIN) of SOCIETY OF INTERVENTIONAL ONCOLOGY INC is 41-2161648.
- Is SOCIETY OF INTERVENTIONAL ONCOLOGY INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(6) since 2006.
- Are donations to SOCIETY OF INTERVENTIONAL ONCOLOGY INC tax-deductible?
- No. The IRS master file says contributions to it are not deductible.
- Which annual return does SOCIETY OF INTERVENTIONAL ONCOLOGY INC file?
- Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
- When is the next return of SOCIETY OF INTERVENTIONAL ONCOLOGY INC due?
- The return for tax year 2025 (the year ending December 31, 2025) is due May 15, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did SOCIETY OF INTERVENTIONAL ONCOLOGY INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2024.
- Who is the principal officer of SOCIETY OF INTERVENTIONAL ONCOLOGY INC?
- The 990 for the year ended December 31, 2024 names JENA EBERLY STACK.
- Who are the officers and directors of SOCIETY OF INTERVENTIONAL ONCOLOGY INC?
- The 990 for the year ended December 31, 2024 lists 12 people; 3 received compensation from the organization, the highest $7,750 (TERENCE GADE, BOARD MEMBER AS OF JANUARY).
- How much revenue does SOCIETY OF INTERVENTIONAL ONCOLOGY INC have?
- On its 990 for the year ended December 31, 2024 it reported revenue of $3,751,897, expenses of $4,384,991 and total assets of $10,052,218 at year end.
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All nonprofits in WASHINGTON · District of Columbia · Voluntary health associations and medical disciplines