Civic Intelligence

South Portland Historical Society

EIN 01-6045966 • 501(c)3 • South Portland, ME

Pub. 78 Eligible

Profile

Educate the public regarding significant events in history for South Portland, Maine.

55 Bug Light ParkSouth Portland, ME 04106

sphistory.org

Siviq Scores

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

Liabilities / Assets

64th percentile

0.00x

Higher debt load relative to assets than 64% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Liabilities / Revenue

70th percentile

0.01x

Higher debt load relative to revenue than 70% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Net Margin

31st percentile

-9.2%

Higher net margin than 31% of similar nonprofits.

501(c)3 • <$500k nonprofits • Source year 2025

Top Officer Pay

92nd percentile

$43,956

Higher top officer pay than 92% of similar nonprofits.

Top officer pay equals 36.5% of source-year revenue.

501(c)3 • <$500k nonprofits • Source year 2025

Asset Growth

47th percentile

-3.8%

Faster asset growth than 47% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Revenue Growth

55th percentile

1.6%

Faster revenue growth than 55% of similar nonprofits.

501(c)3 • <$500k nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets64th percentile

Assets

Down

$360,775

Down $14,198 (-3.8%) from 2024

Liabilities

Down

$1,350

Down $3,082 (-70%) from 2024

Net Assets

Down

$359,425

Down $11,116 (-3.0%) from 2024

Operations
Liabilities / Revenue70th percentileNet Margin31st percentile

Revenue

Up

$120,419

Up $1,953 (+1.6%) from 2024

Expenses

Down

$131,535

Down $3,916 (-2.9%) from 2024

Net Income

Up

-$11,116

Up $5,869 (+35%) from 2024

Trend Graphs

Balance Sheet Trend

Asset Growth47th percentile

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

$600K$400K$200K$0Assets 2010: $523,453Liabilities 2010: $2,333Net Assets 2010: $521,1202010Assets 2011: $534,668Liabilities 2011: $1,498Net Assets 2011: $533,1702011Assets 2012: $521,213Liabilities 2012: $956Net Assets 2012: $520,2572012Assets 2013: $517,852Liabilities 2013: $8,792Net Assets 2013: $509,0602013Assets 2014: $505,416Liabilities 2014: $11,027Net Assets 2014: $494,3892014Assets 2015: $485,713Liabilities 2015: $10,0452015Assets 2016: $465,441Liabilities 2016: $8,3722016Assets 2017: $466,302Liabilities 2017: $9,2162017Assets 2018: $448,902Liabilities 2018: $5,2892018Assets 2019: $438,704Liabilities 2019: $4,0312019Assets 2020: $420,762Liabilities 2020: $4,1482020Assets 2021: $427,536Liabilities 2021: $3,699Net Assets 2021: $423,8372021Assets 2022: $409,020Liabilities 2022: $3,497Net Assets 2022: $405,5232022Assets 2023: $389,095Liabilities 2023: $1,569Net Assets 2023: $387,5262023Assets 2024: $374,973Liabilities 2024: $4,432Net Assets 2024: $370,5412024Assets 2025: $360,775Liabilities 2025: $1,350Net Assets 2025: $359,4252025

Highlighted filing

2025

Assets$360,775
Liabilities$1,350
Net Assets$359,425
Open 2025 Filing

Operations Trend

Revenue Growth55th percentile

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

$150K$100K$50K$0-$50KExpenses 2010: $45,9012010Expenses 2011: $52,8642011Revenue 2012: $53,636Expenses 2012: $66,549Net Income 2012: -$12,9132012Revenue 2013: $58,659Expenses 2013: $69,083Net Income 2013: -$10,4242013Revenue 2014: $66,974Expenses 2014: $81,645Net Income 2014: -$14,6712014Revenue 2015: $60,208Expenses 2015: $78,930Net Income 2015: -$18,7222015Revenue 2016: $63,633Expenses 2016: $82,253Net Income 2016: -$18,6202016Revenue 2017: $83,373Expenses 2017: $83,354Net Income 2017: $192017Revenue 2018: $74,447Expenses 2018: $87,920Net Income 2018: -$13,4732018Revenue 2019: $77,205Expenses 2019: $86,145Net Income 2019: -$8,9402019Revenue 2020: $65,576Expenses 2020: $83,635Net Income 2020: -$18,0592020Revenue 2021: $89,060Expenses 2021: $81,837Net Income 2021: $7,2232021Revenue 2022: $90,040Expenses 2022: $108,354Net Income 2022: -$18,3142022Revenue 2023: $105,600Expenses 2023: $123,597Net Income 2023: -$17,9972023Revenue 2024: $118,466Expenses 2024: $135,451Net Income 2024: -$16,9852024Revenue 2025: $120,419Expenses 2025: $131,535Net Income 2025: -$11,1162025

Highlighted filing

2025

Revenue$120,419
Expenses$131,535
Net Income-$11,116
Open 2025 Filing

Filings

Most recent year

2025 • Form 990EZDetailed filing. Detailed filing data is available for this year.

Open filing
Assets
$360,775
Liabilities
$1,350
Net assets
$359,425
Revenue
$120,419
Expenses
$131,535
Net income
-$11,116
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$3.61$0.01$3.59$1.20$1.32$0.11
2024Detailed filing. Detailed filing data is available for this year.$3.75$0.04$3.71$1.18$1.35$0.17
2023Detailed filing. Detailed filing data is available for this year.$3.89$0.02$3.88$1.06$1.24$0.18
2022Detailed filing. Detailed filing data is available for this year.$4.09$0.03$4.06$0.90$1.08$0.18
2021Detailed filing. Detailed filing data is available for this year.$4.28$0.04$4.24$0.89$0.82$0.07
2020Summary only. Only limited summary data is available for this year.$4.21$0.04$0.66$0.84$0.18
2019Summary only. Only limited summary data is available for this year.$4.39$0.04$0.77$0.86$0.09
2018Summary only. Only limited summary data is available for this year.$4.49$0.05$0.74$0.88$0.13
2017Summary only. Only limited summary data is available for this year.$4.66$0.09$0.83$0.83$0.00
2016Summary only. Only limited summary data is available for this year.$4.65$0.08$0.64$0.82$0.19
2015Summary only. Only limited summary data is available for this year.$4.86$0.10$0.60$0.79$0.19
2014Summary only. Only limited summary data is available for this year.$5.05$0.11$4.94$0.67$0.82$0.15
2013Summary only. Only limited summary data is available for this year.$5.18$0.09$5.09$0.59$0.69$0.10
2012Summary only. Only limited summary data is available for this year.$5.21$0.01$5.20$0.54$0.67$0.13
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$5.35$0.01$5.33$0.53
2010Facts available. Structured filing facts are available, but richer extracted sections are limited.$5.23$0.02$5.21$0.46
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2025 to Dec 31, 2025
Signed
Apr 13, 2026
Return Version
2025v4.0
Gross Receipts
$139,326
Mission and Program Overview

Mission

Educate the public regarding significant events in history for South Portland, Maine.

Program Services

DescriptionGrantsExpenses
Maintain museum profiling South Portland history, including acquiring and displaying collections. Most services and collections were donated. Using a weekly column in local newspaper to highlight South Portland history.$0$79,800
Lectures and walking tours that provide history about South Portland.$0$26,013
Compensation and Service Providers
Top Officer Pay92nd percentile

Employees

NameTitleFull / Part TimeBaseOtherTotal
Kathryn DiPhilippoExecutive DirectorFT$43,956-$43,956
Josie DiPhilippoSecretary And CatalogerPT$3,840-$3,840
Robert BlackwoodPresident-$0--
Craig PiperVice President-$0--
Larry LegereTreasurer-$0--
Joanne LangermanCollection Manager-$0--
Matthew ChristoforoHistorian-$0--
Leslie BarteauxAt Large-$0--
Nancy CrowellAt Large-$0--
William DaleAt Large-$0--
Linda EastmanAt Large-$0--
Margaret HawkinsAt Large-$0--
David KahillAt Large-$0--
Louis MillerAt Large-$0--
Graham ParkerAt Large-$0--
Donna WalkerAt Large-$0--
Filing and Contact Details

Filer

Filer Name
South Portland Historical Society
EIN
01-6045966
Phone
2077677299
Address
55 Bug Light Park, South Portland, ME 04106

Signing Officer

Name
Kathryn DiPhilippo
Title
Executive Director
Phone
2077677299
Signed
2026-04-13
Supplemental Narrative

Additional Explanations

Form 990-EZ, Part I, Line 16

“Description;Amount^Bank and credit card fees;2926|Insurance;698|Supplies;538|Miscellaneous;484^Total;4646^”

Form 990-EZ, Part II, Line 24

“Description;EOY Amount^Gift shop inventory;21933^Total;21933^”

Form 990-EZ, Part II, Line 26

“Description;EOY Amount^Credit cards;484|Payroll withholding;252|Sales taxes;614^Total;1350^”

Raw XML Appendix261 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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IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm6Kathryn DiPhilippo
IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm7Leslie Barteaux
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IRS990EZ/OfficerDirectorTrusteeEmplGrp/PersonNm15Donna Walker
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt0President
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt1Vice President
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt2Treasurer
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt3Secretary and Cataloger
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt4Collection Manager
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt5Historian
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt6Executive Director
IRS990EZ/OfficerDirectorTrusteeEmplGrp/TitleTxt7At Large
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IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus1YearAmt0131607
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus2YearsAmt0120297
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus3YearsAmt0104240
IRS990ScheduleA/TotalSupportCalendarYearGrp/CurrentTaxYearMinus4YearsAmt091973
IRS990ScheduleA/TotalSupportCalendarYearGrp/TotalAmt0587443
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorNum0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine20RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/ZIPCode0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/TotalContributionsAmt0RESTRICTED
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0Description;Amount^Bank and credit card fees;2926|Insurance;698|Supplies;538|Miscellaneous;484^Total;4646^
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1Description;EOY Amount^Gift shop inventory;21933^Total;21933^
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2Description;EOY Amount^Credit cards;484|Payroll withholding;252|Sales taxes;614^Total;1350^
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0Form 990-EZ, Part I, Line 16
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1Form 990-EZ, Part II, Line 24
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2Form 990-EZ, Part II, Line 26
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0Kathryn DiPhilippo
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0Executive Director
ReturnHeader/BusinessOfficerGrp/PhoneNum02077677299
ReturnHeader/BusinessOfficerGrp/SignatureDt02026-04-13
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0SOUTH PORTLAND HISTORICAL SOCIETY
ReturnHeader/Filer/BusinessNameControlTxt0SOUT
ReturnHeader/Filer/EIN0016045966
ReturnHeader/Filer/PhoneNum02077677299
ReturnHeader/Filer/USAddress/AddressLine1Txt055 Bug Light Park
ReturnHeader/Filer/USAddress/CityNm0South Portland
ReturnHeader/Filer/USAddress/StateAbbreviationCd0ME
ReturnHeader/Filer/USAddress/ZIPCd004106
ReturnHeader/ReturnTs02026-04-13T09:20:25-07:00
ReturnHeader/ReturnTypeCd0990EZ
ReturnHeader/TaxPeriodBeginDt02025-01-01
ReturnHeader/TaxPeriodEndDt02025-12-31
ReturnHeader/TaxYr02025

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