Civic Intelligence

Marine Biological Laboratory Post-Retirement Health Plan

EIN 04-3285249 • 501(c)9 • Woods Hole, MA

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Profile

Providing post-retirement medical benefits.

7 MBL StreetWoods Hole, MA 02543
Siviq Scores

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

Liabilities / Assets

31st percentile

0.00x

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

501(c)9 • $5M-$10M nonprofits • Source year 2024

Liabilities / Revenue

38th percentile

0.00x

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

501(c)9 • $5M-$10M nonprofits • Source year 2024

Net Margin

93rd percentile

65%

Higher net margin than 93% of similar nonprofits.

501(c)9 • $5M-$10M nonprofits • Source year 2024

Top Officer Pay

61st percentile

$7,505

Higher top officer pay than 61% of similar nonprofits.

Top officer pay equals 4.6% of source-year revenue.

501(c)9 • $5M-$10M nonprofits • Source year 2024

Asset Growth

73rd percentile

14%

Faster asset growth than 73% of similar nonprofits.

501(c)9 • $5M-$10M nonprofits • Annualized from 2023 to 2024

Revenue Growth

81st percentile

26%

Faster revenue growth than 81% of similar nonprofits.

501(c)9 • $5M-$10M nonprofits • Annualized from 2023 to 2024

Balance Sheet
Liabilities / Assets31st percentile

Assets

Up

$5,156,177

Up $624,804 (+14%) from 2023

Liabilities

Flat

$0

Flat from 2023

Net Assets

Up

$5,156,177

Up $624,804 (+14%) from 2023

Operations
Liabilities / Revenue38th percentileNet Margin93rd percentile

Revenue

Up

$163,442

Up $33,639 (+26%) from 2023

Expenses

Up

$56,399

Up $3,803 (+7.2%) from 2023

Net Income

Up

$107,043

Up $29,836 (+39%) from 2023

Trend Graphs

Balance Sheet Trend

Asset Growth73rd percentile

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

$6.0M$4.0M$2.0M$0Assets 2011: $1,846,825Liabilities 2011: $0Net Assets 2011: $1,846,8252011Assets 2012: $2,075,448Liabilities 2012: $0Net Assets 2012: $2,075,4482012Assets 2013: $2,424,792Liabilities 2013: $0Net Assets 2013: $2,424,7922013Assets 2014: $2,570,135Liabilities 2014: $0Net Assets 2014: $2,570,1352014Assets 2015: $2,533,838Liabilities 2015: $0Net Assets 2015: $2,533,8382015Assets 2016: $2,727,523Liabilities 2016: $0Net Assets 2016: $2,727,5232016Assets 2017: $3,118,385Liabilities 2017: $0Net Assets 2017: $3,118,3852017Assets 2018: $2,908,713Liabilities 2018: $0Net Assets 2018: $2,908,7132018Assets 2019: $3,530,669Liabilities 2019: $0Net Assets 2019: $3,530,6692019Assets 2020: $3,951,254Liabilities 2020: $0Net Assets 2020: $3,951,2542020Assets 2021: $4,614,262Liabilities 2021: $0Net Assets 2021: $4,614,2622021Assets 2022: $3,928,331Liabilities 2022: $0Net Assets 2022: $3,928,3312022Assets 2023: $4,531,373Liabilities 2023: $0Net Assets 2023: $4,531,3732023Assets 2024: $5,156,177Liabilities 2024: $0Net Assets 2024: $5,156,1772024

Highlighted filing

2024

Assets$5,156,177
Liabilities$0
Net Assets$5,156,177
Open 2024 Filing

Operations Trend

Revenue Growth81st percentile

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

$300K$200K$100K$0Expenses 2011: $279,3752011Expenses 2012: $223,8362012Revenue 2013: $244,008Expenses 2013: $186,096Net Income 2013: $57,9122013Revenue 2014: $231,868Expenses 2014: $157,721Net Income 2014: $74,1472014Revenue 2015: $210,490Expenses 2015: $148,470Net Income 2015: $62,0202015Revenue 2016: $190,552Expenses 2016: $138,770Net Income 2016: $51,7822016Revenue 2017: $169,928Expenses 2017: $100,685Net Income 2017: $69,2432017Revenue 2018: $154,914Expenses 2018: $111,576Net Income 2018: $43,3382018Revenue 2019: $222,592Expenses 2019: $140,830Net Income 2019: $81,7622019Revenue 2020: $182,906Expenses 2020: $111,690Net Income 2020: $71,2162020Revenue 2021: $188,552Expenses 2021: $85,353Net Income 2021: $103,1992021Revenue 2022: $177,679Expenses 2022: $99,982Net Income 2022: $77,6972022Revenue 2023: $129,803Expenses 2023: $52,596Net Income 2023: $77,2072023Revenue 2024: $163,442Expenses 2024: $56,399Net Income 2024: $107,0432024

Highlighted filing

2024

Revenue$163,442
Expenses$56,399
Net Income$107,043
Open 2024 Filing

Filings

Most recent year

2024 • Form 990Facts available. Structured filing facts are available, but richer extracted sections are limited.

Open filing
Assets
$5,156,177
Liabilities
$0
Net assets
$5,156,177
Revenue
$163,442
Expenses
$56,399
Net income
$107,043
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2024Facts available. Structured filing facts are available, but richer extracted sections are limited.$5.16$0.00$5.16$0.16$0.06$0.11
2023Detailed filing. Detailed filing data is available for this year.$4.53$0.00$4.53$0.13$0.05$0.08
2022Detailed filing. Detailed filing data is available for this year.$3.93$0.00$3.93$0.18$0.10$0.08
2021XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$4.61$0.00$4.61$0.19$0.09$0.10
2020XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$3.95$0.00$3.95$0.18$0.11$0.07
2019XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$3.53$0.00$3.53$0.22$0.14$0.08
2018Detailed filing. Detailed filing data is available for this year.$2.91$0.00$2.91$0.15$0.11$0.04
2017XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$3.12$0.00$3.12$0.17$0.10$0.07
2016XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$2.73$0.00$2.73$0.19$0.14$0.05
2015XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$2.53$0.00$2.53$0.21$0.15$0.06
2014Detailed filing. Detailed filing data is available for this year.$2.57$0.00$2.57$0.23$0.16$0.07
2013Detailed filing. Detailed filing data is available for this year.$2.42$0.00$2.42$0.24$0.19$0.06
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$2.08$0.00$2.08$0.22
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.85$0.00$1.85$0.28
Latest Filing Detail
Jump To
Filing Snapshot
Filing Period
Jan 1, 2024 to Dec 31, 2024
Signed
Jul 29, 2025
Return Version
2024v5.0
Gross Receipts
$163,442
Mission and Program Overview

Mission

Providing post-retirement medical benefits.

Balance Sheet Detail
LineBeginningEndChange
Assets
Cap Stk Tr Prin Current Funds$4,531,373$5,156,177▲ $624,804
Investments in Publicly Traded Securities$4,310,677$4,918,349▲ $607,672
Cash and Non-Interest-Bearing Accounts$220,696$237,828▲ $17,132
Pd in Cap Srpls Land Bldg Eqp Fund$0$0→ $0
Rtn Earn Endowment Incm Other Fnds$0$0→ $0
Total Assets$4,531,373$5,156,177▲ $624,804
Liabilities
Total Liabilities$0$0→ $0
Net Assets / Fund Balance
Total Net Assets Fund Balance$4,531,373$5,156,177▲ $624,804
Total Liabilities and Net Assets / Fund Balance$4,531,373$5,156,177▲ $624,804
Compensation and Service Providers
Top Officer Pay61st percentile

Employees

NameTitleBaseTotal
-Trustee$7,505$7,505

Board Members and Trustees

NameTitle
-Record keeping
Revenue and Support

Revenue Composition

Contributions and Grants
$0
Program Service Revenue
$48,894
Investment Income
$114,548
Other Revenue
$0
Change in Net Assets
$107,043
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Other Expenses$7,505
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0
Salaries, Compensation, and Employee Benefits$0
Total Fundraising Expense$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Benefits to Members$48,894--$48,894
Other Expenses$7,505$0$0$7,505
Total Functional Expenses$56,399$0$0$56,399
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
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, Part VI, Section A, Line 8A

“The Marine Biological Laboratory Post-Retirement Health Plan is a 501(c)(9) entity created to provide post-retirement benefits for eligible employees at the Marine Biological Laboratory. There are no formal meetings held as the trust is run according to the plan document.”

Form 990, Part VI, Section A, Line 8B

“The Plan does not have any committees with authority to act on behalf of the governing body.”

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

“The Form 990 is prepared by an MBL employee and is reviewed by the Controller and Chief Financial Officer, the latter who signs the return. This is considered sufficient review for this plan.”

Form 990, Part VI, Section C, Line 19

“The MBL Post-Retirement Health Plan governing documents are available upon request in the MBL's Human Resources department. There are no conflict of interest policies or financial statements for the plan.”

Form 990, Part VII, Section A, Line 1A

“The Marine Biological Laboratory is listed on Part VII as it is the organization which has the power to appoint and terminate the trustee of the Plan.”

Filing and Contact Details

Filer

Filer Name
Marine Biological Laboratory Post-retirement Medical Care Fund
EIN
04-3285249
Phone
5082897239
Address
7 MBL Street, Woods Hole, MA 02543

Signing Officer

Name
Mary S Harrington
Title
Chief Financial Officer
Phone
5082897239
Signed
2025-07-29

Organization Details

Principal Officer
Nipam Patel
Formed
1994
Legal Domicile
Ma
Voting Board Members
1
Independent Board Members
1
Employees
0
Volunteers
0
Raw XML Appendix310 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.

Path#Value
IRS990/AccountantCompileOrReviewInd00
IRS990/ActivitiesConductedPrtshpInd00
IRS990/ActivityOrMissionDesc0Providing post-retirement medical benefits.
IRS990/BackupWthldComplianceInd00
IRS990/BenefitsToMembersGrp/ProgramServicesAmt048894
IRS990/BenefitsToMembersGrp/TotalAmt048894
IRS990/BooksInCareOfDetail/BusinessName/BusinessNameLine1Txt0Marine Biological Laboratory
IRS990/BooksInCareOfDetail/PhoneNum05082897239
IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt07 MBL Street
IRS990/BooksInCareOfDetail/USAddress/CityNm0Woods Hole
IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd0MA
IRS990/BooksInCareOfDetail/USAddress/ZIPCd002543
IRS990/BusinessRlnWith35CtrlEntInd00
IRS990/BusinessRlnWithFamMemInd00
IRS990/BusinessRlnWithOrgMemInd00
IRS990/CapStkTrPrinCurrentFundsGrp/BOYAmt04531373
IRS990/CapStkTrPrinCurrentFundsGrp/EOYAmt05156177
IRS990/CashNonInterestBearingGrp/BOYAmt0220696
IRS990/CashNonInterestBearingGrp/EOYAmt0237828
IRS990/ChangeToOrgDocumentsInd00
IRS990/CntrctRcvdGreaterThan100KCnt00
IRS990/CollectionsOfArtInd00
IRS990/CompensationFromOtherSrcsInd00
IRS990/CompensationProcessCEOInd00
IRS990/CompensationProcessOtherInd00
IRS990/ConflictOfInterestPolicyInd00
IRS990/ConservationEasementsInd00
IRS990/ConsolidatedAuditFinclStmtInd00
IRS990/CreditCounselingInd00
IRS990/CYBenefitsPaidToMembersAmt048894
IRS990/CYContributionsGrantsAmt00
IRS990/CYGrantsAndSimilarPaidAmt00
IRS990/CYInvestmentIncomeAmt0114548
IRS990/CYOtherExpensesAmt07505
IRS990/CYOtherRevenueAmt00
IRS990/CYProgramServiceRevenueAmt048894
IRS990/CYRevenuesLessExpensesAmt0107043
IRS990/CYSalariesCompEmpBnftPaidAmt00
IRS990/CYTotalExpensesAmt056399
IRS990/CYTotalFundraisingExpenseAmt00
IRS990/CYTotalProfFndrsngExpnsAmt00
IRS990/CYTotalRevenueAmt0163442
IRS990/DecisionsSubjectToApprovaInd00
IRS990/DeductibleArtContributionInd00
IRS990/DeductibleNonCashContriInd00
IRS990/DelegationOfMgmtDutiesInd00
IRS990/Desc0Providing post-retirement medical benefits.
IRS990/DescribedInSection501c3Ind00
IRS990/DisregardedEntityInd00
IRS990/DocumentRetentionPolicyInd00
IRS990/DonatedServicesAndUseFcltsAmt00
IRS990/DonorAdvisedFundInd00
IRS990/DonorRstrOrQuasiEndowmentsInd00
IRS990/ElectionOfBoardMembersInd00
IRS990/EmployeeCnt00
IRS990/ExpenseAmt056399
IRS990/FamilyOrBusinessRlnInd00
IRS990/FederalGrantAuditRequiredInd00
IRS990/ForeignActivitiesInd00
IRS990/ForeignFinancialAccountInd00
IRS990/ForeignGrantsGrp/TotalAmt00
IRS990/ForeignOfficeInd00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt10
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt01
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt11
IRS990/Form990PartVIISectionAGrp/BusinessName/BusinessNameLine1Txt0Bank of America Merril Lynch
IRS990/Form990PartVIISectionAGrp/BusinessName/BusinessNameLine1Txt1Marine Biological Laboratory
IRS990/Form990PartVIISectionAGrp/InstitutionalTrusteeInd0X
IRS990/Form990PartVIISectionAGrp/InstitutionalTrusteeInd1X
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt00
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt10
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt07505
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt10
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt00
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt10
IRS990/Form990PartVIISectionAGrp/TitleTxt0Trustee
IRS990/Form990PartVIISectionAGrp/TitleTxt1Record keeping
IRS990/Form990ProvidedToGvrnBodyInd00
IRS990/FormationYr01994
IRS990/FormerOfcrEmployeesListedInd00
IRS990/FSAuditedInd00
IRS990/FundraisingActivitiesInd00
IRS990/GainOrLossGrp/OtherAmt00
IRS990/GainOrLossGrp/SecuritiesAmt00
IRS990/GamingActivitiesInd00
IRS990/GoverningBodyVotingMembersCnt01
IRS990/GrantsToDomesticIndividualsGrp/TotalAmt00
IRS990/GrantsToDomesticOrgsGrp/TotalAmt00
IRS990/GrantsToIndividualsInd00
IRS990/GrantsToOrganizationsInd00
IRS990/GrantToRelatedPersonInd00
IRS990/GrossReceiptsAmt0163442
IRS990/GroupReturnForAffiliatesInd00
IRS990/IncludeFIN48FootnoteInd00
IRS990/IncmFromInvestBondProceedsGrp/ExclusionAmt00
IRS990/IncmFromInvestBondProceedsGrp/RelatedOrExemptFuncIncomeAmt00
IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt00
IRS990/IncmFromInvestBondProceedsGrp/UnrelatedBusinessRevenueAmt00
IRS990/IndependentAuditFinclStmtInd00
IRS990/IndependentVotingMemberCnt01
IRS990/IndivRcvdGreaterThan100KCnt00
IRS990/IndoorTanningServicesInd00
IRS990/InfoInScheduleOPartVIIInd0X
IRS990/InfoInScheduleOPartVIInd0X
IRS990/InvestmentExpenseAmt00
IRS990/InvestmentIncomeGrp/ExclusionAmt0114548
IRS990/InvestmentIncomeGrp/RelatedOrExemptFuncIncomeAmt00
IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt0114548
IRS990/InvestmentIncomeGrp/UnrelatedBusinessRevenueAmt00
IRS990/InvestmentInJointVentureInd00
IRS990/InvestmentsPubTradedSecGrp/BOYAmt04310677
IRS990/InvestmentsPubTradedSecGrp/EOYAmt04918349
IRS990/IRPDocumentCnt00
IRS990/IRPDocumentW2GCnt00
IRS990/LegalDomicileStateCd0MA
IRS990/LoanOutstandingInd00
IRS990/LocalChaptersInd00
IRS990/MaterialDiversionOrMisuseInd00
IRS990/MembersOrStockholdersInd00
IRS990/MethodOfAccountingAccrualInd0X
IRS990/MinutesOfCommitteesInd00
IRS990/MinutesOfGoverningBodyInd00
IRS990/MissionDesc0Providing post-retirement medical benefits.
IRS990/MoreThan5000KToIndividualsInd00
IRS990/MoreThan5000KToOrgInd00
IRS990/NetAssetsOrFundBalancesBOYAmt04531373
IRS990/NetAssetsOrFundBalancesEOYAmt05156177
IRS990/NetUnrelatedBusTxblIncmAmt00
IRS990/NetUnrlzdGainsLossesInvstAmt0517761
IRS990/NondeductibleContributionsInd00
IRS990/OfficerMailingAddressInd00
IRS990/OperateHospitalInd00
IRS990/Organization501cInd0X
IRS990/OrgDoesNotFollowFASB117Ind0X
IRS990/OtherChangesInNetAssetsAmt00
IRS990/OtherExpensesGrp/Desc0Bank Fees
IRS990/OtherExpensesGrp/FundraisingAmt00
IRS990/OtherExpensesGrp/ManagementAndGeneralAmt00
IRS990/OtherExpensesGrp/ProgramServicesAmt07505
IRS990/OtherExpensesGrp/TotalAmt07505
IRS990/OtherRevenueTotalAmt00
IRS990/PartialLiquidationInd00
IRS990/PdInCapSrplsLandBldgEqpFundGrp/BOYAmt00
IRS990/PdInCapSrplsLandBldgEqpFundGrp/EOYAmt00
IRS990/PoliticalCampaignActyInd00
IRS990/PrincipalOfficerNm0Nipam Patel
IRS990/PriorPeriodAdjustmentsAmt00
IRS990/ProfessionalFundraisingInd00
IRS990/ProhibitedTaxShelterTransInd00
IRS990/PYBenefitsPaidToMembersAmt045841
IRS990/PYContributionsGrantsAmt00
IRS990/PYGrantsAndSimilarPaidAmt00
IRS990/PYInvestmentIncomeAmt083962
IRS990/PYOtherExpensesAmt06755
IRS990/PYOtherRevenueAmt00
IRS990/PYProgramServiceRevenueAmt045841
IRS990/PYRevenuesLessExpensesAmt077207
IRS990/PYSalariesCompEmpBnftPaidAmt00
IRS990/PYTotalExpensesAmt052596
IRS990/PYTotalProfFndrsngExpnsAmt00
IRS990/PYTotalRevenueAmt0129803
IRS990/ReconcilationRevenueExpnssAmt0107043
IRS990/RelatedEntityInd01
IRS990/RelatedOrganizationCtrlEntInd00
IRS990/RentalIncomeOrLossGrp/PersonalAmt00
IRS990/RentalIncomeOrLossGrp/RealAmt00
IRS990/ReportInvestmentsOtherSecInd00
IRS990/ReportLandBuildingEquipmentInd00
IRS990/ReportOtherAssetsInd00
IRS990/ReportOtherLiabilitiesInd00
IRS990/ReportProgramRelatedInvstInd00
IRS990/RevenueAmt0163442
IRS990/RoyaltiesRevenueGrp/ExclusionAmt00
IRS990/RoyaltiesRevenueGrp/RelatedOrExemptFuncIncomeAmt00
IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt00
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IRS990/RtnEarnEndowmentIncmOthFndsGrp/BOYAmt00
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IRS990/ScheduleBRequiredInd00
IRS990/ScheduleJRequiredInd00
IRS990/ScheduleORequiredInd01
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt0The Marine Biological Laboratory Post-Retirement Health Plan is a 501(c)(9) entity created to provide post-retirement benefits for eligible employees at the Marine Biological Laboratory. There are no formal meetings held as the trust is run according to the plan document.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt1The Plan does not have any committees with authority to act on behalf of the governing body.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt2The Form 990 is prepared by an MBL employee and is reviewed by the Controller and Chief Financial Officer, the latter who signs the return. This is considered sufficient review for this plan.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt3The MBL Post-Retirement Health Plan governing documents are available upon request in the MBL's Human Resources department. There are no conflict of interest policies or financial statements for the plan.
IRS990ScheduleO/SupplementalInformationDetail/ExplanationTxt4The Marine Biological Laboratory is listed on Part VII as it is the organization which has the power to appoint and terminate the trustee of the Plan.
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc0Form 990, Part VI, Section A, Line 8a
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc1Form 990, Part VI, Section A, Line 8b
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc2Form 990, Part VI, Section B, Line 11b
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc3Form 990, Part VI, Section C, Line 19
IRS990ScheduleO/SupplementalInformationDetail/FormAndLineReferenceDesc4Form 990, Part VII, Section A, Line 1a
IRS990ScheduleR/AssetExchangeInd00
IRS990ScheduleR/AssetPurchaseFromOtherOrgInd00
IRS990ScheduleR/AssetSaleToOtherOrgInd00
IRS990ScheduleR/DivRelatedOrganizationInd00
IRS990ScheduleR/GiftGrntCapContriFromOthOrgInd01
IRS990ScheduleR/GiftGrntOrCapContriToOthOrgInd00
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/ControlledOrganizationInd00
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IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/EIN0042104690
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IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/LegalDomicileStateCd0MA
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PrimaryActivitiesTxt0Tax exempt science and research institute
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/PublicCharityStatusTxt07
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/AddressLine1Txt07 MBL Street
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IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/StateAbbreviationCd0MA
IRS990ScheduleR/IdRelatedTaxExemptOrgGrp/USAddress/ZIPCd002543
IRS990ScheduleR/LoansOrGuaranteesFromOthOrgInd00
IRS990ScheduleR/LoansOrGuaranteesToOtherOrgInd00
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IRS990ScheduleR/PerformOfServicesByOtherOrgInd01
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IRS990ScheduleR/ReceiptOfIntAnntsRntsRyltsInd00
IRS990ScheduleR/ReimbursementPaidByOtherOrgInd00
IRS990ScheduleR/ReimbursementPaidToOtherOrgInd00
IRS990ScheduleR/RentalOfFacilitiesToOthOrgInd00
IRS990ScheduleR/RentalOfFcltsFromOthOrgInd00
IRS990ScheduleR/SharingOfFacilitiesInd00
IRS990ScheduleR/TransactionsRelatedOrgGrp/InvolvedAmt048894
IRS990ScheduleR/TransactionsRelatedOrgGrp/InvolvedAmt10
IRS990ScheduleR/TransactionsRelatedOrgGrp/InvolvedAmt20
IRS990ScheduleR/TransactionsRelatedOrgGrp/MethodOfAmountDeterminationTxt0The Marine Biological Laboratory funded $48,894 to the MBL Post-Retirement Health Plan for the tax year.
IRS990ScheduleR/TransactionsRelatedOrgGrp/MethodOfAmountDeterminationTxt1Marine Biological Laboratory employees perform bookkeeping and tax preparation services for the Post-Retirement Health Plan.
IRS990ScheduleR/TransactionsRelatedOrgGrp/MethodOfAmountDeterminationTxt2Marine Biological Laboratory employees perform bookkeeping and tax preparation services for the Post-Retirement Health Plan.
IRS990ScheduleR/TransactionsRelatedOrgGrp/OtherOrganizationName/BusinessNameLine1Txt0Marine Biological Laboratory
IRS990ScheduleR/TransactionsRelatedOrgGrp/OtherOrganizationName/BusinessNameLine1Txt1Marine Biological Laboratory
IRS990ScheduleR/TransactionsRelatedOrgGrp/OtherOrganizationName/BusinessNameLine1Txt2Marine Biological Laboratory
IRS990ScheduleR/TransactionsRelatedOrgGrp/TransactionTypeTxt0c
IRS990ScheduleR/TransactionsRelatedOrgGrp/TransactionTypeTxt1m
IRS990ScheduleR/TransactionsRelatedOrgGrp/TransactionTypeTxt2o
IRS990ScheduleR/TransferFromOtherOrgInd00
IRS990ScheduleR/TransferToOtherOrgInd00
IRS990/SchoolOperatingInd00
IRS990/SignificantChangeInd00
IRS990/SignificantNewProgramSrvcInd00
IRS990/SubjectToExcsTaxNetInvstIncInd00
IRS990/SubjectToProxyTaxInd00
IRS990/SubjToTaxRmnrtnExPrchtPymtInd00
IRS990/TaxablePartyNotificationInd00
IRS990/TaxExemptBondsInd00
IRS990/TerminateOperationsInd00
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IRS990/TotalAssetsGrp/BOYAmt04531373
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IRS990/TotalCompGreaterThan150KInd00
IRS990/TotalContributionsAmt00
IRS990/TotalEmployeeCnt00
IRS990/TotalFunctionalExpensesGrp/FundraisingAmt00
IRS990/TotalFunctionalExpensesGrp/ManagementAndGeneralAmt00
IRS990/TotalFunctionalExpensesGrp/ProgramServicesAmt056399
IRS990/TotalFunctionalExpensesGrp/TotalAmt056399
IRS990/TotalGrossUBIAmt00
IRS990/TotalLiabilitiesBOYAmt00
IRS990/TotalLiabilitiesEOYAmt00
IRS990/TotalLiabilitiesGrp/BOYAmt00
IRS990/TotalLiabilitiesGrp/EOYAmt00
IRS990/TotalNetAssetsFundBalanceGrp/BOYAmt04531373
IRS990/TotalNetAssetsFundBalanceGrp/EOYAmt05156177
IRS990/TotalOtherCompensationAmt00
IRS990/TotalOtherProgSrvcExpenseAmt00
IRS990/TotalOtherProgSrvcGrantAmt00
IRS990/TotalOtherProgSrvcRevenueAmt00
IRS990/TotalOthProgramServiceRevGrp/ExclusionAmt048894
IRS990/TotalOthProgramServiceRevGrp/RelatedOrExemptFuncIncomeAmt00
IRS990/TotalOthProgramServiceRevGrp/TotalRevenueColumnAmt048894
IRS990/TotalOthProgramServiceRevGrp/UnrelatedBusinessRevenueAmt00
IRS990/TotalProgramServiceExpensesAmt056399
IRS990/TotalProgramServiceRevenueAmt048894
IRS990/TotalReportableCompFromOrgAmt07505
IRS990/TotalRevenueGrp/ExclusionAmt0163442
IRS990/TotalRevenueGrp/RelatedOrExemptFuncIncomeAmt00
IRS990/TotalRevenueGrp/TotalRevenueColumnAmt0163442
IRS990/TotalRevenueGrp/UnrelatedBusinessRevenueAmt00
IRS990/TotalVolunteersCnt00
IRS990/TotLiabNetAssetsFundBalanceGrp/BOYAmt04531373
IRS990/TotLiabNetAssetsFundBalanceGrp/EOYAmt05156177
IRS990/TotReportableCompRltdOrgAmt00
IRS990/TypeOfOrganizationTrustInd0X
IRS990/UnrelatedBusIncmOverLimitInd00
IRS990/UponRequestInd0X
IRS990/USAddress/AddressLine1Txt07 MBL Street
IRS990/USAddress/CityNm0Woods Hole
IRS990/USAddress/StateAbbreviationCd0MA
IRS990/USAddress/ZIPCd002543
IRS990/VotingMembersGoverningBodyCnt01
IRS990/VotingMembersIndependentCnt01
IRS990/WhistleblowerPolicyInd00
ReturnHeader/BuildTS02025-03-06 01:10:19Z
ReturnHeader/BusinessOfficerGrp/PersonNm0Mary S Harrington
ReturnHeader/BusinessOfficerGrp/PersonTitleTxt0Chief Financial Officer
ReturnHeader/BusinessOfficerGrp/PhoneNum05082897239
ReturnHeader/BusinessOfficerGrp/SignatureDt02025-07-29
ReturnHeader/Filer/BusinessName/BusinessNameLine1Txt0MARINE BIOLOGICAL LABORATORY POST-RETIREMENT MEDICAL CARE FUND
ReturnHeader/Filer/BusinessNameControlTxt0MARI
ReturnHeader/Filer/EIN0043285249
ReturnHeader/Filer/PhoneNum05082897239
ReturnHeader/Filer/USAddress/AddressLine1Txt07 MBL Street
ReturnHeader/Filer/USAddress/CityNm0Woods Hole
ReturnHeader/Filer/USAddress/StateAbbreviationCd0MA
ReturnHeader/Filer/USAddress/ZIPCd002543
ReturnHeader/IRSResponsiblePrtyInfoCurrInd01
ReturnHeader/ReturnTs02025-07-30T12:54:33-07:00
ReturnHeader/ReturnTypeCd0990
ReturnHeader/TaxPeriodBeginDt02024-01-01
ReturnHeader/TaxPeriodEndDt02024-12-31
ReturnHeader/TaxYr02024

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