Civic Intelligence

International Isotope Society Inc

EIN 22-2845329 • 501(c)3 • Holliston, MA

Profile

To encourage the advancement in knowledge of the cynthesis, measurement and application of isotopes and isotopically labeled compounds for the benefit of all related compounds.

23 Jackson DriveHolliston, MA 01746

www.intl-isotope-soc.org

Siviq Scores

Precomputed percentiles relative to similar nonprofits. These scores are descriptive rather than judgmental.

Liabilities / Assets

75th percentile

0.05x

Higher debt load relative to assets than 75% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2024

Liabilities / Revenue

89th percentile

0.31x

Higher debt load relative to revenue than 89% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2024

Net Margin

7th percentile

-165%

Higher net margin than 7% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2024

Top Officer Pay

81st percentile

$0

Higher top officer pay than 81% of similar nonprofits.

Top officer pay equals 0.0% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2024

Asset Growth

31st percentile

-21%

Faster asset growth than 31% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2023 to 2024

Revenue Growth

48th percentile

-3.8%

Faster revenue growth than 48% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets75th percentile

Assets

Down

$105,544

Down $27,819 (-21%) from 2023

Liabilities

Up

$5,251

Up $331 (+6.7%) from 2023

Net Assets

Down

$100,293

Down $28,150 (-22%) from 2023

Operations
Liabilities / Revenue89th percentileNet Margin7th percentile

Revenue

Down

$17,032

Down $666 (-3.8%) from 2023

Expenses

Up

$45,182

Up $16,552 (+58%) from 2023

Net Income

Down

-$28,150

Down $17,218 (-158%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth31st percentile

Grouped bars show assets, liabilities, and net assets across loaded filings.

$400K$300K$200K$100K$0Assets 2011: $266,955Liabilities 2011: $14,4962011Assets 2012: $252,461Liabilities 2012: $13,7372012Assets 2013: $318,776Liabilities 2013: $98,5152013Assets 2014: $327,190Liabilities 2014: $103,1822014Assets 2015: $315,451Liabilities 2015: $10,474Net Assets 2015: $304,9772015Assets 2016: $311,800Liabilities 2016: $11,9992016Assets 2017: $288,609Liabilities 2017: $9,4682017Assets 2018: $279,366Liabilities 2018: $8,3382018Assets 2019: $267,221Liabilities 2019: $9,793Net Assets 2019: $257,4282019Assets 2020: $225,498Liabilities 2020: $9,327Net Assets 2020: $216,1712020Assets 2021: $202,038Liabilities 2021: $6,142Net Assets 2021: $195,8962021Assets 2022: $147,143Liabilities 2022: $7,768Net Assets 2022: $139,3752022Assets 2023: $133,363Liabilities 2023: $4,920Net Assets 2023: $128,4432023Assets 2024: $105,544Liabilities 2024: $5,251Net Assets 2024: $100,2932024

Highlighted filing

2024

Assets$105,544
Liabilities$5,251
Net Assets$100,293
Open 2024 Filing

Operations Trend

Revenue Growth48th percentile

Revenue, expenses, and net income by year, with the latest filing highlighted.

$400K$300K$200K$100K$0-$100KRevenue 2011: $17,063Expenses 2011: $14,064Net Income 2011: $2,9992011Revenue 2012: $10,151Expenses 2012: $23,886Net Income 2012: -$13,7352012Revenue 2013: $8,036Expenses 2013: $26,499Net Income 2013: -$18,4632013Revenue 2014: $28,242Expenses 2014: $24,495Net Income 2014: $3,7472014Revenue 2015: $322,193Expenses 2015: $241,224Net Income 2015: $80,9692015Revenue 2016: $15,303Expenses 2016: $20,479Net Income 2016: -$5,1762016Revenue 2017: $25,163Expenses 2017: $45,823Net Income 2017: -$20,6602017Revenue 2018: $24,733Expenses 2018: $32,846Net Income 2018: -$8,1132018Revenue 2019: $24,949Expenses 2019: $38,549Net Income 2019: -$13,6002019Revenue 2020: $6,082Expenses 2020: $47,339Net Income 2020: -$41,2572020Revenue 2021: $4,900Expenses 2021: $25,175Net Income 2021: -$20,2752021Revenue 2022: $51,090Expenses 2022: $107,611Net Income 2022: -$56,5212022Revenue 2023: $17,698Expenses 2023: $28,630Net Income 2023: -$10,9322023Revenue 2024: $17,032Expenses 2024: $45,182Net Income 2024: -$28,1502024

Highlighted filing

2024

Revenue$17,032
Expenses$45,182
Net Income-$28,150
Open 2024 Filing

Filings

Most recent year

2024 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$105,544
Liabilities
$5,251
Net assets
$100,293
Revenue
$17,032
Expenses
$45,182
Net income
-$28,150
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$1.06$0.05$1.00$0.17$0.45$0.28
2023Detailed filing. Detailed filing data is available for this year.$1.33$0.05$1.28$0.18$0.29$0.11
2022Detailed filing. Detailed filing data is available for this year.$1.47$0.08$1.39$0.51$1.08$0.57
2021Detailed filing. Detailed filing data is available for this year.$2.02$0.06$1.96$0.05$0.25$0.20
2020Detailed filing. Detailed filing data is available for this year.$2.25$0.09$2.16$0.06$0.47$0.41
2019Detailed filing. Detailed filing data is available for this year.$2.67$0.10$2.57$0.25$0.39$0.14
2018Summary only. Only limited summary data is available for this year.$2.79$0.08$0.25$0.33$0.08
2017Summary only. Only limited summary data is available for this year.$2.89$0.09$0.25$0.46$0.21
2016Summary only. Only limited summary data is available for this year.$3.12$0.12$0.15$0.20$0.05
2015Summary only. Only limited summary data is available for this year.$3.15$0.10$3.05$3.22$2.41$0.81
2014Summary only. Only limited summary data is available for this year.$3.27$1.03$0.28$0.24$0.04
2013Summary only. Only limited summary data is available for this year.$3.19$0.99$0.08$0.26$0.18
2012Summary only. Only limited summary data is available for this year.$2.52$0.14$0.10$0.24$0.14
2011Summary only. Only limited summary data is available for this year.$2.67$0.14$0.17$0.14$0.03
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Nov 17, 2025
Return Version
2024v5.2
Gross Receipts
$17,032
Mission and Program Overview

Mission

To encourage the advancement in knowledge of the cynthesis, measurement and application of isotopes and isotopically labeled compounds for the benefit of all related compounds.

Program Services

DescriptionGrantsExpenses
TO ENCOURAGE THE ADVANCEMENT IN KNOWLEDGE OF THE CYNTHESIS, MEASUREMENT AND APPLICATION OF ISOTOPES AND ISOTOPICALLY LABELED COMPOUNDS FOR THE BENEFIT OF ALL RELATED COMPOUNDS.$0$0
Compensation and Service Providers
Top Officer Pay81st percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
MATT HRAPCHAKPresident-$0--
BORIS CZESKISVice President-$0--
SEAN BEWTreasurer-$0--
DR DAVID HESKSecretary-$0--
VOLKER DERDAUBoard Of Trustees-$0--
BRAD MAXWELLBoard Of Trustees-$0--
CHAD ELMOREBoard Of Trustees-$0--
MARWAN ELMASRIBoard Of Trustees-$0--
Filing and Contact Details

Filer

Filer Name
International Isotope Society Inc
EIN
22-2845329
Phone
2153481539
Address
23 JACKSON DRIVE, HOLLISTON, MA 01746

Signing Officer

Name
Brad Maxwell
Title
Treasurer
Phone
2153481539
Signed
2025-11-17
Discuss with paid preparer
Yes

Preparer

Firm
Clarke Nicolini & Associates Ltd
Address
1240 WEST CHESTER PK SUITE 202, WEST CHESTER, PA 19382
Preparer
Melissa a Mcclay
Phone
6106922313
Supplemental Narrative

Additional Explanations

Form 990-ez, Part I, Line 4 - Other Investment Income

“Description: interest income. Amount: 3.”

Form 990-ez, Part I, Line 8 - Other Revenue

“Description: meeting income. Amount: 14,685.”

Form 990-ez, Part I, Line 16 - Other Expenses

“Description: bank service charges. Amount: 1,577. Description: meetings. Amount: 37,501. Description: website costs. Amount: 855. Total to form 990-ez, line 16: 39,933.”

Form 990-ez, Part II, Line 26 - Other Liabilities

“Description: accounts payable. Beg. Of year amount: 3,500. End of year amount: 3,600. Description: unearned revenue. Beg. Of year amount: 1,420. End of year amount: 1,651.”

Raw XML Appendix192 raw XML fields

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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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0DESCRIPTION: INTEREST INCOME. AMOUNT: 3.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1DESCRIPTION: MEETING INCOME. AMOUNT: 14,685.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2DESCRIPTION: BANK SERVICE CHARGES. AMOUNT: 1,577. DESCRIPTION: MEETINGS. AMOUNT: 37,501. DESCRIPTION: WEBSITE COSTS. AMOUNT: 855. TOTAL TO FORM 990-EZ, LINE 16: 39,933.
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TransferPrsnlBnftContractsDecl/DeclarationDesc0THE ORGANIZATION DID NOT, DURING THE YEAR, RECEIVE ANY FUNDS, DIRECTLY,OR INDIRECTLY, TO PAY PREMIUMS ON A PERSONAL BENEFIT CONTRACT.THE ORGANIZATION, DID NOT, DURING THE YEAR, PAY ANY PREMIUMS, DIRECTLY,OR INDIRECTLY, ON A PERSONAL BENEFIT CONTRACT.
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ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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