Civic Intelligence

Society of Rheology Incorporated

EIN 13-6203476 • 501(c)3 • College Park, MD

Profile

Advancing and disseminating information on the deformation and flow of matter to the scientific and educational communities worldwide.

One Physics EllipseCollege Park, MD 20740-3843

www.rheology.org

Siviq Scores

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

Liabilities / Assets

50th percentile

0.06x

Higher debt load relative to assets than 50% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Liabilities / Revenue

68th percentile

0.22x

Higher debt load relative to revenue than 68% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Net Margin

59th percentile

9.1%

Higher net margin than 59% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Source year 2024

Top Officer Pay

40th percentile

$0

Higher top officer pay than 40% of similar nonprofits.

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

501(c)3 • $1M-$5M nonprofits • Source year 2024

Asset Growth

47th percentile

2.5%

Faster asset growth than 47% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Revenue Growth

93rd percentile

145%

Faster revenue growth than 93% of similar nonprofits.

501(c)3 • $1M-$5M nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets50th percentile

Assets

Up

$2,659,231

Up $65,379 (+2.5%) from 2023

Liabilities

Down

$168,266

Down $5,182 (-3.0%) from 2023

Net Assets

Up

$2,490,965

Up $70,561 (+2.9%) from 2023

Operations
Liabilities / Revenue68th percentileNet Margin59th percentile

Revenue

Up

$776,163

Up $459,083 (+145%) from 2023

Expenses

Up

$705,600

Up $487,848 (+224%) from 2023

Net Income

Down

$70,563

Down $28,765 (-29%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth47th percentile

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

$3.0M$2.0M$1.0M$0Assets 2011: $1,586,104Liabilities 2011: $111,633Net Assets 2011: $1,474,4712011Assets 2012: $1,759,165Liabilities 2012: $114,980Net Assets 2012: $1,644,1852012Assets 2013: $1,742,155Liabilities 2013: $100,652Net Assets 2013: $1,641,5032013Assets 2014: $1,734,212Liabilities 2014: $104,337Net Assets 2014: $1,629,8752014Assets 2015: $1,766,554Liabilities 2015: $132,440Net Assets 2015: $1,634,1142015Assets 2016: $1,867,407Liabilities 2016: $193,550Net Assets 2016: $1,673,8572016Assets 2017: $1,861,911Liabilities 2017: $140,325Net Assets 2017: $1,721,5862017Assets 2018: $1,916,221Liabilities 2018: $128,793Net Assets 2018: $1,787,4282018Assets 2019: $2,104,099Liabilities 2019: $126,398Net Assets 2019: $1,977,7012019Assets 2020: $2,192,451Liabilities 2020: $67,745Net Assets 2020: $2,124,7062020Assets 2021: $2,460,262Liabilities 2021: $121,514Net Assets 2021: $2,338,7482021Assets 2022: $2,376,905Liabilities 2022: $55,829Net Assets 2022: $2,321,0762022Assets 2023: $2,593,852Liabilities 2023: $173,448Net Assets 2023: $2,420,4042023Assets 2024: $2,659,231Liabilities 2024: $168,266Net Assets 2024: $2,490,9652024

Highlighted filing

2024

Assets$2,659,231
Liabilities$168,266
Net Assets$2,490,965
Open 2024 Filing

Operations Trend

Revenue Growth93rd percentile

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

$1.0M$500K$0-$500KExpenses 2011: $474,4062011Expenses 2012: $309,4382012Revenue 2013: $661,400Expenses 2013: $664,082Net Income 2013: -$2,6822013Revenue 2014: $587,665Expenses 2014: $599,293Net Income 2014: -$11,6282014Revenue 2015: $579,041Expenses 2015: $574,802Net Income 2015: $4,2392015Revenue 2016: $334,676Expenses 2016: $294,933Net Income 2016: $39,7432016Revenue 2017: $789,092Expenses 2017: $741,363Net Income 2017: $47,7292017Revenue 2018: $670,460Expenses 2018: $604,618Net Income 2018: $65,8422018Revenue 2019: $603,186Expenses 2019: $412,913Net Income 2019: $190,2732019Revenue 2020: $333,104Expenses 2020: $186,799Net Income 2020: $146,3052020Revenue 2021: $540,787Expenses 2021: $326,745Net Income 2021: $214,0422021Revenue 2022: $582,888Expenses 2022: $600,560Net Income 2022: -$17,6722022Revenue 2023: $317,080Expenses 2023: $217,752Net Income 2023: $99,3282023Revenue 2024: $776,163Expenses 2024: $705,600Net Income 2024: $70,5632024

Highlighted filing

2024

Revenue$776,163
Expenses$705,600
Net Income$70,563
Open 2024 Filing

Filings

Most recent year

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

Open filing
Assets
$2,659,231
Liabilities
$168,266
Net assets
$2,490,965
Revenue
$776,163
Expenses
$705,600
Net income
$70,563
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Detailed filing. Detailed filing data is available for this year.$2.66$0.17$2.49$0.78$0.71$0.07
2023Summary only. Only limited summary data is available for this year.$2.59$0.17$2.42$0.32$0.22$0.10
2022Facts available. Structured filing facts are available, but richer extracted sections are limited.$2.38$0.06$2.32$0.58$0.60$0.02
2021Summary only. Only limited summary data is available for this year.$2.46$0.12$2.34$0.54$0.33$0.21
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$2.19$0.07$2.12$0.33$0.19$0.15
2019XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$2.10$0.13$1.98$0.60$0.41$0.19
2018XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.92$0.13$1.79$0.67$0.60$0.07
2017XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.86$0.14$1.72$0.79$0.74$0.05
2016XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.87$0.19$1.67$0.33$0.29$0.04
2015XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.77$0.13$1.63$0.58$0.57$0.00
2014Detailed filing. Detailed filing data is available for this year.$1.73$0.10$1.63$0.59$0.60$0.01
2013Detailed filing. Detailed filing data is available for this year.$1.74$0.10$1.64$0.66$0.66$0.00
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.76$0.11$1.64$0.31
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.59$0.11$1.47$0.47
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Nov 3, 2025
Return Version
2024v5.0
Gross Receipts
$776,163
Mission and Program Overview

Mission

Advancing and disseminating information on the deformation and flow of matter to the scientific and educational communities worldwide.

Balance Sheet Detail
LineBeginningEndChange
Assets
Accounts Receivable$160,341--
Cash and Non-Interest-Bearing Accounts$21,963$77,732▲ $55,769
Total Assets$2,593,852$2,659,231▲ $65,379
Other Assets Total$2,411,548$2,581,499▲ $169,951
Liabilities
Deferred Revenue$120,000$120,000→ $0
Other Liabilities$53,448$48,266▼ $5,182
Total Liabilities$173,448$168,266▼ $5,182
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$2,420,404$2,490,965▲ $70,561
Total Net Assets Fund Balance$2,420,404$2,490,965▲ $70,561
Total Liabilities and Net Assets / Fund Balance$2,593,852$2,659,231▲ $65,379

Asset Categories

AssetBook ValueDepreciationBasis
Other Assets Org$20,000--
Compensation and Service Providers
Top Officer Pay40th percentile

Board Members and Trustees

NameTitle
Jonathan RothsteinPresident
Dimitris VlassopoulosEditor
Evelyne Van RuymbekeMember at La
Kelly SchultzMember at La
Simon a RogersMember at La
Anne M GrilletPast Preside
Kalman MiglerSecretary
Chuqiao Elise ChenStudent Rep
S Lisa BiswalTreasurer
Jeff MorrisVice Preside
Revenue and Support

Revenue Composition

Contributions and Grants
$0
Program Service Revenue
$634,335
Investment Income
$141,828
Other Revenue
$0
Change in Net Assets
$70,563
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$678,723
Grants and Similar Amounts Paid$26,877
Professional Fundraising Fees$0
Salaries, Compensation, and Employee Benefits$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Fees for Services Management-$46,888-$46,888
Grants to Domestic Individuals$26,877--$26,877
Office Expenses-$18,647-$18,647
Insurance-$11,862-$11,862
Other Expenses$7,385$511,595-$7,385
Fees for Services Accounting-$5,143-$5,143
Fees for Services Legal-$677-$677
All Other Expenses$-1,482--$-1,482
Total Functional Expenses$110,788$594,812$0$705,600
Fundraising, Events, and Gaming
Fundraising activities
No
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Professional Fundraising Fees$0
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Debt and Bond Financing

Other Reported Liabilities

LiabilityAmount
Venture Fund Diversity$26,455
Deferred Membership$19,835
Accrued Expense$1,976
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Business relationship with 35% controlled entity
No
Business relationship with family members
No
Business relationship with organization members
No
Material changes to governing documents
No
Compensation from other sources disclosed
No
CEO compensation reviewed
No
Other officer compensation reviewed
No
Conflict-of-interest policy
No
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

Form 990, Page 6, Part VI, Line 11B

“The form 990 is reviewed by the treasurer prior to filing with the internal revenue service.”

Form 990, Page 6, Part VI, Line 19

“Governing documents are available on the society's website rheology.org.”

Filing and Contact Details

Filer

Filer Name
Society of Rheology Incorporated
EIN
13-6203476
Phone
8604863980
Address
ONE PHYSICS ELLIPSE, COLLEGE PARK, MD 20740-3843

Signing Officer

Name
S Lisa Biswal
Title
Treasurer
Phone
8604863980
Signed
2025-11-03

Organization Details

Principal Officer
Jonathan Rothstein
Formed
1967
Legal Domicile
Ny
Voting Board Members
10
Independent Board Members
10
Employees
0
Volunteers
50

Preparer

Firm
Zion Synek & Associates
Address
6000 FREEDOM SQUARE DR STE 220, INDEPENDENCE, OH 44131-2594
Preparer
Kenn M Synek CPA Cva
Phone
2164476006
Supplemental Narrative

Additional Explanations

Form 990, Part XI

“Change in unrestricted net assets”

Raw XML Appendix377 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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IRS990ScheduleI/GrantsOtherAsstToIndivInUSGrp/GrantTypeTxt2METZNER AWARD
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IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0THE FORM 990 IS REVIEWED BY THE TREASURER PRIOR TO FILING WITH THE INTERNAL REVENUE SERVICE.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1GOVERNING DOCUMENTS ARE AVAILABLE ON THE SOCIETY'S WEBSITE RHEOLOGY.ORG.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2CHANGE IN UNRESTRICTED NET ASSETS
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990, PAGE 6, PART VI, LINE 11B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990, PAGE 6, PART VI, LINE 19
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2FORM 990, PART XI
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IRS990/WebsiteAddressTxt0WWW.RHEOLOGY.ORG
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ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0S LISA BISWAL
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0TREASURER
ReturnHeader/BusinessOfficerGrp/PhoneNum08604863980
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-11-03
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0SOCIETY OF RHEOLOGY INCORPORATED
ReturnHeader/Filer/BusinessNameControlTxt0SOCI
ReturnHeader/Filer/EIN0136203476
ReturnHeader/Filer/PhoneNum08604863980
ReturnHeader/Filer/USAddress/AddressLine1Txt0ONE PHYSICS ELLIPSE
ReturnHeader/Filer/USAddress/CityNm0COLLEGE PARK
ReturnHeader/Filer/USAddress/StateAbbreviationCd0MD
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ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0ZION SYNEK & ASSOCIATES
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt06000 FREEDOM SQUARE DR STE 220
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0INDEPENDENCE
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0OH
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd0441312594
ReturnHeader/PreparerPersonGrp/PhoneNum02164476006
ReturnHeader/PreparerPersonGrp/PreparationDt02025-11-03
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0KENN M SYNEK CPA CVA
ReturnHeader/ReturnTs02025-11-03T10:08:22-05:00
ReturnHeader/ReturnTypeCd0990
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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