Liabilities / Assets
25th percentile
Tied with the lowest-debt nonprofits in its peer group.
EIN 04-3146650 • 501(c)6 • Gainesville, FL
Profile
The international stereotactic radiosurgery society (isrs) was founded as a worldwide organization in 1991 and remains the only professional body of its kind. Created to foster learning and research on the topics of brain and body radiosurgery, the society is highly dedicated to: 1. Promoting technical developments in stereotactic radiosurgery 2. Promoting the highest levels of clinical expertise 3. Convening every two years at the isrs congress. The isrs fosters technical development and research on the topics of brain and body radiosurgery by holding biennial congresses, maintaining a website, and other activities to encourage the exchange of information.
Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.
Liabilities / Assets
25th percentile
Tied with the lowest-debt nonprofits in its peer group.
Liabilities / Revenue
26th percentile
Tied with the lowest-debt nonprofits in its peer group.
Net Margin
23rd percentile
Higher net margin than 23% of similar nonprofits.
Top Officer Pay
Score unavailable
No filing with officer rows is available for this organization yet.
Asset Growth
25th percentile
Faster asset growth than 25% of similar nonprofits.
Revenue Growth
99th percentile
Faster revenue growth than 99% of similar nonprofits.
Assets
Down$547,825
Down $31,881 (-5.5%) from 2023
Liabilities
Down$0
Down $2,133 (-100%) from 2023
Net Assets
Down$547,825
Down $29,748 (-5.2%) from 2023
Revenue
Up$471,824
Up $311,555 (+194%) from 2023
Expenses
Up$501,572
Up $279,524 (+126%) from 2023
Net Income
Up-$29,748
Up $32,031 (+52%) from 2023
Most recent year
2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.
The organization fosters technical development and research on the topics of brain and body radiosurgery. As part of that mission, the organization holds a biennial congress and maintains a website for the exchange of information.
The international stereotactic radiosurgery society (isrs) was founded as a worldwide organization in 1991 and remains the only professional body of its kind. Created to foster learning and research on the topics of brain and body radiosurgery, the society is highly dedicated to: 1. Promoting technical developments in stereotactic radiosurgery 2. Promoting the highest levels of clinical expertise 3. Convening every two years at the isrs congress. The isrs fosters technical development and research on the topics of brain and body radiosurgery by holding biennial congresses, maintaining a website, and other activities to encourage the exchange of information.
| Line | Beginning | End | Change |
|---|---|---|---|
| Assets | |||
| Cash and Non-Interest-Bearing Accounts | $579,706 | $547,825 | ▼ $31,881 |
| Rtn Earn Endowment Incm Other Fnds | $577,573 | $547,825 | ▼ $29,748 |
| Total Assets | $579,706 | $547,825 | ▼ $31,881 |
| Liabilities | |||
| Accounts Payable and Accrued Expenses | $2,133 | - | - |
| Total Liabilities | $2,133 | $0 | ▼ $2,133 |
| Net Assets / Fund Balance | |||
| Total Net Assets Fund Balance | $577,573 | $547,825 | ▼ $29,748 |
| Total Liabilities and Net Assets / Fund Balance | $579,706 | $547,825 | ▼ $31,881 |
| Name | Title |
|---|---|
| Arjun Saghal | President |
| Alessandra Gorgulho | Director |
| Daniel Tan | Director |
| Daniel Trifiletti | Director |
| Elena De Martin | Director |
| Selcuk Peker | Director |
| Shoji Yomo | Director |
| Thomas Zilli | Director |
| Veronica Chiang | Director |
| Marc Levivier Md | Past Preside |
| Thierry Gevaert | Secretary |
| Cecelia Gzell | Treasurer |
| Jason Sheehan | Vice Preside |
| Line Item | Amount |
|---|---|
| Other Expenses | $482,072 |
| Grants and Similar Amounts Paid | $19,500 |
| Professional Fundraising Fees | $0 |
| Salaries, Compensation, and Employee Benefits | $0 |
| Total Fundraising Expense | $0 |
| Line Item | Program | Management | Fundraising | Total |
|---|---|---|---|---|
| Conferences and Meetings | - | - | - | $241,858 |
| Fees for Services Other | - | - | - | $114,524 |
| Office Expenses | - | - | - | $52,818 |
| Fees for Services Legal | - | - | - | $27,911 |
| Foreign Grants | - | - | - | $19,500 |
| Fees for Services Management | - | - | - | $18,701 |
| Information Technology | - | - | - | $9,433 |
| Other Expenses | - | - | - | $3,673 |
| Fees for Services Accounting | - | - | - | $2,567 |
| Total Functional Expenses | $0 | $0 | $0 | $501,572 |
| Region | Activity | Services | Offices | Employees | Spending |
|---|---|---|---|---|---|
| Europe | Website Host, Admin | Admin | 1 | 1 | $482,072 |
| Line Item | Amount |
|---|---|
| Professional Fundraising Fees | $0 |
“The organization has contracted with an outside management company so that the management company will handle organization of the biennial congress with the related revenues and expenses. The management company also handles the organization's membership dues and maintains the website and membership lists.”
“A copy of the form 990 is emailed to the officers for their review prior to finalization of the form 990. The final copy of the form 990 is sent to the officer responsible for signing and filing the form 990, who reviews the form 990 prior to signing and filing it.”
“The organization's conflict of interest policy is monitored through the day-to-day communication between the governing body and the headquarter secretariat (located in kenes group, geneva switzerland). If a conflict of interest should arise, the bylaws (section 9 - resignation and removal) state that "whenever, in the judgement of the board of directors, the best interests of the isrs will be served, any member may be removed from office by two-thirds vote of the members of the board of directors in office, at any meeting of the board of directors duly called at which a quorum is present."”
“The organization does not compensate its officers or directors, nor does it have any employees. It has contracted with an independent outside organization to provide administrative and financial services.”
“X”
“The international stereotactic radiosurgery society (isrs) was founded as a worldwide organization in 1991 and remains the only professional body of its kind. Created to foster learning and research on the topics of brain and body radiosurgery, the society is highly dedicated to: 1. Promoting technical developments in stereotactic radiosurgery 2. Promoting the highest levels of clinical expertise 3. Convening every two years at the isrs congress. The isrs fosters technical development and research on the topics of brain and body radiosurgery by holding biennial congresses, maintaining a website, and other activities to encourage the exchange of information.”
“The isrs organizes and holds a biennial congress to encourage interaction among international communities of healthcare professionals dedicated to the advancement of stereotactic radiosurgery and to give them the opportunity to broaden and develop their knowledge with fellow professionals. In addition to other activities at the biennial congress, the isrs makes certain awards for contributions in the field of radiosurgery, scientific papers, and posters. During this year, the organization held its congress, in may 2024 in new york city. Over 700 neurosurgeions, radiation oncologists, medical physicists, and others from over 55 countries were present at the biennial congress. In alternate years, isrs organizes interim meetings to maintain currency in education for its members.”
“FRANCE”
“CONSULTING 114,524 0 0”
This appendix keeps the raw XML leaves available for debugging and edge-case review. The human report above is the primary experience.
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| IRS990/ActivityOrMissionDesc | 0 | THE INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY (ISRS) WAS FOUNDED AS A WORLDWIDE ORGANIZATION IN 1991 AND REMAINS THE ONLY PROFESSIONAL BODY OF ITS KIND. CREATED TO FOSTER LEARNING AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY, THE SOCIETY IS HIGHLY DEDICATED TO: 1. PROMOTING TECHNICAL DEVELOPMENTS IN STEREOTACTIC RADIOSURGERY 2. PROMOTING THE HIGHEST LEVELS OF CLINICAL EXPERTISE 3. CONVENING EVERY TWO YEARS AT THE ISRS CONGRESS. THE ISRS FOSTERS TECHNICAL DEVELOPMENT AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY BY HOLDING BIENNIAL CONGRESSES, MAINTAINING A WEBSITE, AND OTHER ACTIVITIES TO ENCOURAGE THE EXCHANGE OF INFORMATION. |
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| IRS990/Desc | 0 | THE ISRS ORGANIZES AND HOLDS A BIENNIAL CONGRESS TO ENCOURAGE INTERACTION AMONG INTERNATIONAL COMMUNITIES OF HEALTHCARE PROFESSIONALS DEDICATED TO THE ADVANCEMENT OF STEREOTACTIC RADIOSURGERY AND TO GIVE THEM THE OPPORTUNITY TO BROADEN AND DEVELOP THEIR KNOWLEDGE WITH FELLOW PROFESSIONALS. IN ADDITION TO OTHER ACTIVITIES AT THE BIENNIAL CONGRESS, THE ISRS MAKES CERTAIN AWARDS FOR CONTRIBUTIONS IN THE FIELD OF RADIOSURGERY, SCIENTIFIC PAPERS, AND POSTERS. DURING THIS YEAR, THE ORGANIZATION HELD ITS CONGRESS, IN MAY 2024 IN NEW YORK CITY. OVER 700 NEUROSURGEIONS, RADIATION ONCOLOGISTS, MEDICAL PHYSICISTS, AND OTHERS FROM OVER 55 COUNTRIES WERE PRESENT AT THE BIENNIAL CONGRESS. IN ALTERNATE YEARS, ISRS ORGANIZES INTERIM MEETINGS TO MAINTAIN CURRENCY IN EDUCATION FOR ITS MEMBERS. |
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| IRS990/MissionDesc | 0 | THE INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY (ISRS) WAS FOUNDED AS A WORLDWIDE ORGANIZATION IN 1991 AND REMAINS THE ONLY PROFESSIONAL BODY OF ITS KIND. CREATED TO FOSTER LEARNING AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY, THE SOCIETY IS HIGHLY DEDICATED TO: 1. PROMOTING TECHNICAL DEVELOPMENTS IN STEREOTACTIC RADIOSURGERY 2. PROMOTING THE HIGHEST LEVELS OF CLINICAL EXPERTISE 3. CONVENING EVERY TWO YEARS AT THE ISRS CONGRESS. THE ISRS FOSTERS TECHNICAL DEVELOPMENT AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY BY HOLDING BIENNIAL CONGRESSES, MAINTAINING A WEBSITE, AND OTHER ACTIVITIES TO ENCOURAGE THE EXCHANGE OF INFORMATION. |
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| IRS990ScheduleF/ForeignIndividualsGrantsGrp/MannerOfCashDisbursementTxt | 1 | CHECK |
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| IRS990ScheduleF/ForeignIndividualsGrantsGrp/RecipientCnt | 2 | 1 |
| IRS990ScheduleF/ForeignIndividualsGrantsGrp/RegionTxt | 0 | EUROPE |
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| IRS990ScheduleF/ForeignIndividualsGrantsGrp/RegionTxt | 2 | AUSTRALIA |
| IRS990ScheduleF/ForeignIndividualsGrantsGrp/TypeOfAssistanceTxt | 0 | LARS LESKELL FELLOWSHIP |
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| IRS990/ScheduleORequiredInd | 0 | true |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 0 | THE INTERNATIONAL STEREOTACTIC RADIOSURGERY SOCIETY (ISRS) WAS FOUNDED AS A WORLDWIDE ORGANIZATION IN 1991 AND REMAINS THE ONLY PROFESSIONAL BODY OF ITS KIND. CREATED TO FOSTER LEARNING AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY, THE SOCIETY IS HIGHLY DEDICATED TO: 1. PROMOTING TECHNICAL DEVELOPMENTS IN STEREOTACTIC RADIOSURGERY 2. PROMOTING THE HIGHEST LEVELS OF CLINICAL EXPERTISE 3. CONVENING EVERY TWO YEARS AT THE ISRS CONGRESS. THE ISRS FOSTERS TECHNICAL DEVELOPMENT AND RESEARCH ON THE TOPICS OF BRAIN AND BODY RADIOSURGERY BY HOLDING BIENNIAL CONGRESSES, MAINTAINING A WEBSITE, AND OTHER ACTIVITIES TO ENCOURAGE THE EXCHANGE OF INFORMATION. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 1 | THE ISRS ORGANIZES AND HOLDS A BIENNIAL CONGRESS TO ENCOURAGE INTERACTION AMONG INTERNATIONAL COMMUNITIES OF HEALTHCARE PROFESSIONALS DEDICATED TO THE ADVANCEMENT OF STEREOTACTIC RADIOSURGERY AND TO GIVE THEM THE OPPORTUNITY TO BROADEN AND DEVELOP THEIR KNOWLEDGE WITH FELLOW PROFESSIONALS. IN ADDITION TO OTHER ACTIVITIES AT THE BIENNIAL CONGRESS, THE ISRS MAKES CERTAIN AWARDS FOR CONTRIBUTIONS IN THE FIELD OF RADIOSURGERY, SCIENTIFIC PAPERS, AND POSTERS. DURING THIS YEAR, THE ORGANIZATION HELD ITS CONGRESS, IN MAY 2024 IN NEW YORK CITY. OVER 700 NEUROSURGEIONS, RADIATION ONCOLOGISTS, MEDICAL PHYSICISTS, AND OTHERS FROM OVER 55 COUNTRIES WERE PRESENT AT THE BIENNIAL CONGRESS. IN ALTERNATE YEARS, ISRS ORGANIZES INTERIM MEETINGS TO MAINTAIN CURRENCY IN EDUCATION FOR ITS MEMBERS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 2 | FRANCE |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 3 | THE ORGANIZATION HAS CONTRACTED WITH AN OUTSIDE MANAGEMENT COMPANY SO THAT THE MANAGEMENT COMPANY WILL HANDLE ORGANIZATION OF THE BIENNIAL CONGRESS WITH THE RELATED REVENUES AND EXPENSES. THE MANAGEMENT COMPANY ALSO HANDLES THE ORGANIZATION'S MEMBERSHIP DUES AND MAINTAINS THE WEBSITE AND MEMBERSHIP LISTS. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 4 | A COPY OF THE FORM 990 IS EMAILED TO THE OFFICERS FOR THEIR REVIEW PRIOR TO FINALIZATION OF THE FORM 990. THE FINAL COPY OF THE FORM 990 IS SENT TO THE OFFICER RESPONSIBLE FOR SIGNING AND FILING THE FORM 990, WHO REVIEWS THE FORM 990 PRIOR TO SIGNING AND FILING IT. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 5 | THE ORGANIZATION'S CONFLICT OF INTEREST POLICY IS MONITORED THROUGH THE DAY-TO-DAY COMMUNICATION BETWEEN THE GOVERNING BODY AND THE HEADQUARTER SECRETARIAT (LOCATED IN KENES GROUP, GENEVA SWITZERLAND). IF A CONFLICT OF INTEREST SHOULD ARISE, THE BYLAWS (SECTION 9 - RESIGNATION AND REMOVAL) STATE THAT "WHENEVER, IN THE JUDGEMENT OF THE BOARD OF DIRECTORS, THE BEST INTERESTS OF THE ISRS WILL BE SERVED, ANY MEMBER MAY BE REMOVED FROM OFFICE BY TWO-THIRDS VOTE OF THE MEMBERS OF THE BOARD OF DIRECTORS IN OFFICE, AT ANY MEETING OF THE BOARD OF DIRECTORS DULY CALLED AT WHICH A QUORUM IS PRESENT." |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 6 | THE ORGANIZATION DOES NOT COMPENSATE ITS OFFICERS OR DIRECTORS, NOR DOES IT HAVE ANY EMPLOYEES. IT HAS CONTRACTED WITH AN INDEPENDENT OUTSIDE ORGANIZATION TO PROVIDE ADMINISTRATIVE AND FINANCIAL SERVICES. |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 7 | X |
| IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt | 8 | CONSULTING 114,524 0 0 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 0 | FORM 990 - ORGANIZATION'S MISSION |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 1 | FORM 990, PAGE 2, PART III, LINE 4A |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 2 | FORM 990, PART V, LINE 4B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 3 | FORM 990, PAGE 6, PART VI, LINE 3 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 4 | FORM 990, PAGE 6, PART VI, LINE 11B |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 5 | FORM 990, PAGE 6, PART VI, LINE 12C |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 6 | FORM 990, PAGE 6, PART VI, LINE 15A |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 7 | FORM 990, PAGE 6, PART VI, LINE 19 |
| IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc | 8 | FORM 990, PART IX, LINE 11G |
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| IRS990/WebsiteAddressTxt | 0 | WWW.ISRSY.ORG |
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| ReturnHeader/BuildTS | 0 | 2025-03-06 01:10:19Z |
| ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd | 0 | true |
| ReturnHeader/BusinessOfficerGrp/PersonNm | 0 | ARJUN SAGHAL |
| ReturnHeader/BusinessOfficerGrp/PersonTitleTxt | 0 | PRESIDENT |
| ReturnHeader/BusinessOfficerGrp/PhoneNum | 0 | 3523731080 |
| ReturnHeader/BusinessOfficerGrp/SignatureDt | 0 | 2025-08-12 |
| ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt | 0 | INTERNATIONAL STEREOTACTIC |
| ReturnHeader/Filer/BusinessName/BusinessNameLine2Txt | 0 | RADIOSURGERY SOCIETY - ISRS |
| ReturnHeader/Filer/BusinessNameControlTxt | 0 | INTE |
| ReturnHeader/Filer/EIN | 0 | 043146650 |
| ReturnHeader/Filer/PhoneNum | 0 | 3523731080 |
| ReturnHeader/Filer/USAddress/AddressLine1Txt | 0 | C/O JONES CPAS 925 NW 56TH TERR C |
| ReturnHeader/Filer/USAddress/CityNm | 0 | GAINESVILLE |
| ReturnHeader/Filer/USAddress/StateAbbreviationCd | 0 | FL |
| ReturnHeader/Filer/USAddress/ZIPCd | 0 | 32605 |
| ReturnHeader/IRSResponsiblePrtyInfoCurrInd | 0 | true |
| ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt | 0 | JONES CPAS & ADVISORS INC |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt | 0 | 925 NW 56TH TERRACE SUITE C |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm | 0 | GAINESVILLE |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd | 0 | FL |
| ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd | 0 | 32605 |
| ReturnHeader/PreparerPersonGrp/PhoneNum | 0 | 3523731080 |
| ReturnHeader/PreparerPersonGrp/PreparationDt | 0 | 2025-08-12 |
| ReturnHeader/PreparerPersonGrp/PreparerPersonNm | 0 | WILLIAM JONES CPAPFS |
| ReturnHeader/ReturnTs | 0 | 2025-08-12T15:04:13-04:00 |
| ReturnHeader/ReturnTypeCd | 0 | 990 |
| ReturnHeader/TaxPeriodBeginDt | 0 | 2023-10-01 |
| ReturnHeader/TaxPeriodEndDt | 0 | 2024-09-30 |
| ReturnHeader/TaxYr | 0 | 2023 |
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