Civic Intelligence

Source Evaluation Society

EIN 56-1874630 • 501(c)6 • Research Triangle Park, NC

Profile

The mission of the source evaluation society is to advance the applied sciences relating to source evaluation with respect to air pollution and air pollution control by: (1) promoting the development of concepts and techniques relating to the field; (2) encouraging related professional development and knowledge; and (3) striving to ensure the highest professional standards by its members.

PO Box 12124Research Triangle Park, NC 27709

www.sesnews.org

Siviq Scores

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

Liabilities / Assets

25th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)6 • $500k-$1M nonprofits • Source year 2025

Liabilities / Revenue

26th percentile

0.00x

Tied with the lowest-debt nonprofits in its peer group.

501(c)6 • $500k-$1M nonprofits • Source year 2025

Net Margin

83rd percentile

21%

Higher net margin than 83% of similar nonprofits.

501(c)6 • $500k-$1M nonprofits • Source year 2025

Top Officer Pay

49th percentile

$1,000

Higher top officer pay than 49% of similar nonprofits.

Top officer pay equals 0.1% of source-year revenue.

501(c)6 • $500k-$1M nonprofits • Source year 2025

Asset Growth

82nd percentile

22%

Faster asset growth than 82% of similar nonprofits.

501(c)6 • $500k-$1M nonprofits • Annualized from 2024 to 2025

Revenue Growth

5th percentile

-34%

Faster revenue growth than 5% of similar nonprofits.

501(c)6 • $500k-$1M nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets25th percentile

Assets

Up

$818,150

Up $373,248 (+84%) from 2022

Liabilities

Flat

$0

Flat from 2022

Net Assets

Up

$818,150

Up $373,248 (+84%) from 2022

Operations
Liabilities / Revenue26th percentileNet Margin83rd percentile

Revenue

Up

$699,196

Up $589,013 (+535%) from 2022

Expenses

Up

$552,918

Up $472,988 (+592%) from 2022

Net Income

Up

$146,278

Up $116,025 (+384%) from 2022

Trend Graphs

Balance Sheet Trend

Asset Growth82nd percentile

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

$1.0M$500K$0Assets 2014: $286,896Liabilities 2014: $0Net Assets 2014: $286,8962014Assets 2015: $305,628Liabilities 2015: $0Net Assets 2015: $305,6282015Assets 2016: $329,227Liabilities 2016: $0Net Assets 2016: $329,2272016Assets 2017: $310,983Liabilities 2017: $0Net Assets 2017: $310,9832017Assets 2018: $395,126Liabilities 2018: $0Net Assets 2018: $395,1262018Assets 2020: $466,691Liabilities 2020: $0Net Assets 2020: $466,6912020Assets 2021: $414,649Liabilities 2021: $0Net Assets 2021: $414,6492021Assets 2022: $444,902Liabilities 2022: $0Net Assets 2022: $444,9022022Assets 2025: $818,150Liabilities 2025: $0Net Assets 2025: $818,1502025

Highlighted filing

2025

Assets$818,150
Liabilities$0
Net Assets$818,150
Open 2025 Filing

Operations Trend

Revenue Growth5th percentile

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

$1.5M$1.0M$500K$0-$500KRevenue 2014: $47,149Expenses 2014: $12,706Net Income 2014: $34,4432014Revenue 2015: $555,085Expenses 2015: $536,354Net Income 2015: $18,7312015Revenue 2016: $597,558Expenses 2016: $573,959Net Income 2016: $23,5992016Revenue 2017: $179,376Expenses 2017: $197,620Net Income 2017: -$18,2442017Revenue 2018: $1,110,905Expenses 2018: $1,026,762Net Income 2018: $84,1432018Revenue 2020: $533,726Expenses 2020: $514,334Net Income 2020: $19,3922020Revenue 2021: $96,626Expenses 2021: $148,668Net Income 2021: -$52,0422021Revenue 2022: $110,183Expenses 2022: $79,930Net Income 2022: $30,2532022Revenue 2025: $699,196Expenses 2025: $552,918Net Income 2025: $146,2782025

Highlighted filing

2025

Revenue$699,196
Expenses$552,918
Net Income$146,278
Open 2025 Filing

Filings

Most recent year

2025 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.

Open filing
Assets
$818,150
Liabilities
$0
Net assets
$818,150
Revenue
$699,196
Expenses
$552,918
Net income
$146,278
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.82$0.00$0.82$0.70$0.55$0.15
2022Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.44$0.00$0.44$0.11$0.08$0.03
2021XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.41$0.00$0.41$0.10$0.15$0.05
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.47$0.00$0.47$0.53$0.51$0.02
2018XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.40$0.00$0.40$1.11$1.03$0.08
2017XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.31$0.00$0.31$0.18$0.20$0.02
2016Detailed filing. Detailed filing data is available for this year.$0.33$0.00$0.33$0.60$0.57$0.02
2015Detailed filing. Detailed filing data is available for this year.$0.31$0.00$0.31$0.56$0.54$0.02
2014Detailed filing. Detailed filing data is available for this year.$0.29$0.00$0.29$0.05$0.01$0.03
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Apr 1, 2024 to Mar 31, 2025
Signed
Feb 13, 2026
Return Version
2024v5.5
Gross Receipts
$699,196
Mission and Program Overview

Mission

The mission of the source evaluation society is to advance the applied sciences relating to source evaluation with respect to air pollution and air pollution control by: (1) promoting the development of concepts and techniques relating to the field; (2) encouraging related professional development and knowledge; and (3) striving to ensure the highest professional standards by its members.

The mission of the society is to assist in the education, knowledge growth and professional development of its members and others related to air pollution measurements including source emissions evaluation, measurements, analysis, characterization, monitoring and control, for the benefit of society.

Balance Sheet Detail
LineBeginningEndChange
Assets
Investments in Publicly Traded Securities-$553,311-
Cash and Non-Interest-Bearing Accounts$671,872$264,839▼ $407,033
Total Assets$671,872$818,150▲ $146,278
Liabilities
Total Liabilities$0$0→ $0
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$671,872$818,150▲ $146,278
Total Net Assets Fund Balance$671,872$818,150▲ $146,278
Total Liabilities and Net Assets / Fund Balance$671,872$818,150▲ $146,278
Compensation and Service Providers
Top Officer Pay49th percentile

Employees

NameTitleBaseTotal
Jonathan LewisEditor$1,000$1,000

Board Members and Trustees

NameTitle
Glenn EnglandPast President
Sean WardenPresident
Kevin CrosbyVice President
Bryan TylerDirector
Ilya AlimovDirector
Jordan LasterDirector
Josh ChildersDirector
Thomas LeachDirector
Jason BouwmanSecretary
Robin SegallTreasurer
Revenue and Support

Revenue Composition

Contributions and Grants
$62,044
Program Service Revenue
$633,841
Investment Income
$3,311
Other Revenue
$0
All Other Contributions
$48,206
Change in Net Assets
$146,278
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$545,918
Grants and Similar Amounts Paid$7,000
Professional Fundraising Fees$0
Salaries, Compensation, and Employee Benefits$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Conferences and Meetings$463,000--$463,000
Other Expenses$49,865--$49,865
Fees for Services Other-$14,442-$14,442
Fees for Services Accounting-$7,135-$7,135
Grants to Domestic Orgs$7,000--$7,000
Office Expenses-$4,319-$4,319
Insurance-$3,794-$3,794
Information Technology-$3,363-$3,363
Total Functional Expenses$519,865$33,053$0$552,918
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
Subject to proxy tax
No
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Backup withholding compliance
Yes
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
Yes
Management duties delegated
No

Governance Explanations

Form 990, Part VI, Section A, Line 6

“The organization has one class of members and each member has the same rights to elect the members of the governing body and approve of significant decisions of the governing body as required by the bylaws.”

Form 990, Part VI, Section A, Line 7A

“Members elect the governing body. Officers are elected every two years and members-at-large are elected every three years.”

Form 990, Part VI, Section A, Line 7B

“Members vote on significant issues such as changes to the organization's bylaws”

Form 990, Part VI, Section B, Line 11B

“A draft copy of form 990 is made available to the members of the board for their review before the return is filed.”

Form 990, Part VI, Section C, Line 19

“The organization's governing documents are made available upon request. The organization does not have a conflict of interest policy but does have a code of conduct and an ethics committee. Financials are available upon request.”

Filing and Contact Details

Filer

Filer Name
Source Evaluation Society
EIN
56-1874630
Phone
9192103014
Address
PO BOX 12124, RESEARCH TRIANGLE PARK, NC 27709

Signing Officer

Name
Robin Segall
Title
Treasurer
Phone
9192103014
Signed
2026-02-13
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Sean Warden
Formed
1994
Legal Domicile
Nc
Voting Board Members
11
Independent Board Members
11
Employees
0
Volunteers
30

Preparer

Firm
Citrin Cooperman Advisors LLC
Address
240 LEIGH FARM ROAD SUITE 450, DURHAM, NC 27707
Preparer
Miles Pfeifer
Phone
9199684911
Raw XML Appendix337 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/ExplanationTxt0THE ORGANIZATION HAS ONE CLASS OF MEMBERS AND EACH MEMBER HAS THE SAME RIGHTS TO ELECT THE MEMBERS OF THE GOVERNING BODY AND APPROVE OF SIGNIFICANT DECISIONS OF THE GOVERNING BODY AS REQUIRED BY THE BYLAWS.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1MEMBERS ELECT THE GOVERNING BODY. OFFICERS ARE ELECTED EVERY TWO YEARS AND MEMBERS-AT-LARGE ARE ELECTED EVERY THREE YEARS.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2MEMBERS VOTE ON SIGNIFICANT ISSUES SUCH AS CHANGES TO THE ORGANIZATION'S BYLAWS
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3A DRAFT COPY OF FORM 990 IS MADE AVAILABLE TO THE MEMBERS OF THE BOARD FOR THEIR REVIEW BEFORE THE RETURN IS FILED.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4THE ORGANIZATION'S GOVERNING DOCUMENTS ARE MADE AVAILABLE UPON REQUEST. THE ORGANIZATION DOES NOT HAVE A CONFLICT OF INTEREST POLICY BUT DOES HAVE A CODE OF CONDUCT AND AN ETHICS COMMITTEE. FINANCIALS ARE AVAILABLE UPON REQUEST.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0FORM 990, PART VI, SECTION A, LINE 6
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1FORM 990, PART VI, SECTION A, LINE 7A
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2FORM 990, PART VI, SECTION A, LINE 7B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3FORM 990, PART VI, SECTION B, LINE 11B
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc4FORM 990, PART VI, SECTION C, LINE 19
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IRS990/SubjectToProxyTaxInd00
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IRS990/TaxablePartyNotificationInd00
IRS990/TaxExemptBondsInd00
IRS990/TerminateOperationsInd00
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IRS990/TotalCompGreaterThan150KInd00
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IRS990/TotalEmployeeCnt00
IRS990/TotalFunctionalExpensesGrp/FundraisingAmt00
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IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt0519865
IRS990/TotalFunctionalExpensesGrp/TotalAmt0552918
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IRS990/TotalLiabilitiesBOYAmt00
IRS990/TotalLiabilitiesEOYAmt00
IRS990/TotalLiabilitiesGrp/BOYAmt00
IRS990/TotalLiabilitiesGrp/EOYAmt00
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IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt0818150
IRS990/TotalOtherCompensationAmt00
IRS990/TotalProgramServiceExpensesAmt0519865
IRS990/TotalProgramServiceRevenueAmt0633841
IRS990/TotalReportableCompFromOrgAmt01000
IRS990/TotalRevenueGrp/ExclusionAmt03311
IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt0633841
IRS990/TotalRevenueGrp/TotalRevenueColumnAmt0699196
IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt00
IRS990/TotalVolunteersCnt030
IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt0671872
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IRS990/TotReportableCompRltdOrgAmt00
IRS990/TypeOfOrganizationCorpInd0X
IRS990/UnrelatedBusIncmOverLimitInd00
IRS990/UponRequestInd0X
IRS990/USAddress/AddressLine1Txt0PO BOX 12124
IRS990/USAddress/CityNm0RESEARCH TRIANGLE PARK
IRS990/USAddress/StateAbbreviationCd0NC
IRS990/USAddress/ZIPCd027709
IRS990/VotingMembersGoverningBodyCnt011
IRS990/VotingMembersIndependentCnt011
IRS990/WebsiteAddressTxt0WWW.SESNEWS.ORG
IRS990/WhistleblowerPolicyInd00
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/DiscussWithPaidPreparerInd01
ReturnHeader/BusinessOfficerGrp/PersonNm0ROBIN SEGALL
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0TREASURER
ReturnHeader/BusinessOfficerGrp/PhoneNum09192103014
ReturnHeader/BusinessOfficerGrp/SignatureDt02026-02-13
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0SOURCE EVALUATION SOCIETY
ReturnHeader/Filer/BusinessNameControlTxt0SOUR
ReturnHeader/Filer/EIN0561874630
ReturnHeader/Filer/PhoneNum09192103014
ReturnHeader/Filer/USAddress/AddressLine1Txt0PO BOX 12124
ReturnHeader/Filer/USAddress/CityNm0RESEARCH TRIANGLE PARK
ReturnHeader/Filer/USAddress/StateAbbreviationCd0NC
ReturnHeader/Filer/USAddress/ZIPCd027709
ReturnHeader/IRSResponsiblePrtyInfoCurrInd00
ReturnHeader/PreparerFirmGrp/PreparerFirmEIN0872525370
ReturnHeader/PreparerFirmGrp/PreparerFirmName/BusinessNameLine1Txt0CITRIN COOPERMAN ADVISORS LLC
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/AddressLine1Txt0240 LEIGH FARM ROAD SUITE 450
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/CityNm0DURHAM
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/StateAbbreviationCd0NC
ReturnHeader/PreparerFirmGrp/PreparerUSAddress/ZIPCd027707
ReturnHeader/PreparerPersonGrp/PhoneNum09199684911
ReturnHeader/PreparerPersonGrp/PreparationDt02026-02-13
ReturnHeader/PreparerPersonGrp/PreparerPersonNm0MILES PFEIFER
ReturnHeader/ReturnTs02026-02-14T09:18:18-06:00
ReturnHeader/ReturnTypeCd0990
ReturnHeader/TaxPeriodBeginDt02024-04-01
ReturnHeader/TaxPeriodEndDt02025-03-31
ReturnHeader/TaxYr02024

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