Civic Intelligence

Oceanographic Teaching Stations Inc.

990 • Fiscal year 2025 • EIN 95-3409019

Sep 01, 2024 to Aug 31, 2025 • Filed on Dec 15, 2025

Organization Profilewww.roundhouseaquarium.org
P O Box 1Manhattan Beach, CA 90267

(310) 592-6010

Siviq Scores

Precomputed percentiles for this filing year versus similar nonprofits in the same peer cohort.

Liabilities / Assets

32nd percentile

0.01x

Higher debt load relative to assets than 32% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Liabilities / Revenue

31st percentile

0.02x

Higher debt load relative to revenue than 31% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Net Margin

51st percentile

5.1%

Higher net margin than 51% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Top Officer Pay

84th percentile

$148,792

Higher top officer pay than 84% of similar nonprofits.

Top officer pay equals 13.6% of source-year revenue.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Source year 2025

Asset Growth

62nd percentile

7.8%

Faster asset growth than 62% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Annualized from 2024 to 2025

Revenue Growth

73rd percentile

22%

Faster revenue growth than 73% of similar nonprofits.

2025 filings • 501(c)3 • $1M-$5M nonprofits • Annualized from 2024 to 2025

Balance Sheet
Liabilities / Assets32nd percentile

Assets

Down

$1,913,601

Down $20,673 (-1.1%) from 2023

Net Assets

Down

$1,895,045

Down $15,206 (-0.8%) from 2023

Liabilities

Down

$18,556

Down $5,467 (-23%) from 2023

Revenue And Expenses
Liabilities / Revenue31st percentileNet Margin51st percentile

Revenue

Up

$1,095,067

Up $113,272 (+12%) from 2023

Expenses

Up

$1,039,484

Up $167,926 (+19%) from 2023

Net Income

Down

$55,583

Down $54,654 (-50%) from 2023

Historical Trend

Balance Sheet Trend

Asset Growth62nd percentile

The highlighted filing sits inside the broader history for assets, liabilities, and net assets.

$2.0M$1.5M$1.0M$500K$0Assets 2011: $431,804Liabilities 2011: $925Net Assets 2011: $430,8792011Assets 2012: $442,707Liabilities 2012: $1,370Net Assets 2012: $441,3372012Assets 2013: $440,981Liabilities 2013: $1,146Net Assets 2013: $439,8352013Assets 2014: $460,567Liabilities 2014: $845Net Assets 2014: $459,7222014Assets 2015: $475,318Liabilities 2015: $845Net Assets 2015: $474,4732015Assets 2016: $442,504Liabilities 2016: $845Net Assets 2016: $441,6592016Assets 2017: $543,484Liabilities 2017: $845Net Assets 2017: $542,6392017Assets 2018: $519,246Liabilities 2018: $845Net Assets 2018: $518,4012018Assets 2019: $1,717,889Liabilities 2019: $5,744Net Assets 2019: $1,712,1452019Assets 2020: $1,663,196Liabilities 2020: $6,705Net Assets 2020: $1,656,4912020Assets 2021: $1,797,126Liabilities 2021: $18,299Net Assets 2021: $1,778,8272021Assets 2022: $1,852,284Liabilities 2022: $52,270Net Assets 2022: $1,800,0142022Assets 2023: $1,934,274Liabilities 2023: $24,023Net Assets 2023: $1,910,2512023Assets 2025: $1,913,601Liabilities 2025: $18,556Net Assets 2025: $1,895,0452025

Highlighted filing

2025

Assets$1,913,601
Liabilities$18,556
Net Assets$1,895,045
Open 2025 Filing

Operations Trend

Revenue Growth73rd percentile

Revenue, expenses, and net income across loaded years, with this filing highlighted.

$2.0M$1.0M$0-$1.0MExpenses 2011: $251,5052011Expenses 2012: $259,0532012Expenses 2013: $235,1302013Revenue 2014: $263,673Expenses 2014: $243,786Net Income 2014: $19,8872014Revenue 2015: $283,283Expenses 2015: $268,532Net Income 2015: $14,7512015Revenue 2016: $289,409Expenses 2016: $322,223Net Income 2016: -$32,8142016Revenue 2017: $427,178Expenses 2017: $326,321Net Income 2017: $100,8572017Revenue 2018: $335,409Expenses 2018: $359,029Net Income 2018: -$23,6202018Revenue 2019: $1,860,548Expenses 2019: $663,627Net Income 2019: $1,196,9212019Revenue 2020: $544,141Expenses 2020: $685,204Net Income 2020: -$141,0632020Revenue 2021: $672,221Expenses 2021: $644,781Net Income 2021: $27,4402021Revenue 2022: $812,678Expenses 2022: $752,510Net Income 2022: $60,1682022Revenue 2023: $981,795Expenses 2023: $871,558Net Income 2023: $110,2372023Revenue 2025: $1,095,067Expenses 2025: $1,039,484Net Income 2025: $55,5832025

Highlighted filing

2025

Revenue$1,095,067
Expenses$1,039,484
Net Income$55,583
Open 2025 Filing
Jump To
Filing Snapshot
Filing Period
Sep 1, 2024 to Aug 31, 2025
Signed
Dec 15, 2025
Return Version
2024v5.2
Gross Receipts
$1,241,890
Mission and Program Overview

Mission

The specific and primary purposes are to foster and promote the public study of, and interest in, the oceans, tidelands and beaches of Southern California, the marine life therein, and the impact of human population on that environment. OTS and the Roundhouse have been fulfilling this mission since 1979, in the heart of Downtown Manhattan Beach, at the very end of the Manhattan Beach Pier.

Balance Sheet Detail
LineBeginningEndChange
Assets
Land, Buildings, and Equipment, Net$1,131,699$1,014,696▼ $117,003
Investments in Publicly Traded Securities$546,110$751,279▲ $205,169
Savings and Temporary Cash Investments-$120,838-
Cash and Non-Interest-Bearing Accounts$93,064$26,307▼ $66,757
Accounts Receivable$3,945$0▼ $3,945
Other Notes and Loans Receivable, Net-$0-
Pledges and Grants Receivable-$0-
Receivable From Disqualified Prsn-$0-
Receivables From Officers Etc-$0-
Investments Other Securities-$0-
Investments Program Related-$0-
Intangible Assets-$0-
Inventories for Sale or Use-$0-
Prepaid Expenses and Deferred Charges-$0-
Total Assets$1,774,818$1,913,601▲ $138,783
Other Assets Total-$481-
Liabilities
Accounts Payable and Accrued Expenses$15,235$18,556▲ $3,321
Total Liabilities$15,235$18,556▲ $3,321
Net Assets / Fund Balance
Net Assets Without Donor Restrictions$1,759,583$1,895,045▲ $135,462
Total Net Assets Fund Balance$1,759,583$1,895,045▲ $135,462
Total Liabilities and Net Assets / Fund Balance$1,774,818$1,913,601▲ $138,783

Asset Categories

AssetBook ValueDepreciationBasis
Other Land Buildings$1,014,696$746,432$1,761,128
Compensation and Service Providers
Top Officer Pay84th percentile

Employees

NameTitleFull / Part TimeBaseTotal
Grace AdamsExecutive DirectorFT$148,792$148,792

Board Members and Trustees

NameTitle
Hillel CohnChairman
Chuck MilamDirector
Jessica VincentDirector
John RobertsDirector
Lynne GrossDirector
Mark BurtonDirector
Martha Tapias-MansfieldDirector
Matt FriedmanDirector
Michael GreenbergDirector
Paul KonwiserDirector
Richard MontgomeryDirector
Robin CurrenDirector
Richard FruinSecretary
Owen MurrayTreasurer
Revenue and Support

Revenue Composition

Contributions and Grants
$736,505
Program Service Revenue
$159,368
Investment Income
$25,706
Other Revenue
$173,488
All Other Contributions
$692,525
Change in Net Assets
$55,583

Noncash Contribution Practices

Property subject to holding requirements
No
Reviewed unusual noncash gifts
No
Third parties used for noncash contributions
No

Noncash Contributions

Contribution TypeContribution CountReported AmountValuation Method
Other Non Cash Contri Table64$43,980Fair Market Value (FMV) Cash
Total Noncash Contributions64$43,980-
Expenses and Functional Allocation

Major Expense Lines

Line ItemAmount
Salaries, Compensation, and Employee Benefits$685,237
Other Expenses$354,247
Total Fundraising Expense$80,404
Grants and Similar Amounts Paid$0
Professional Fundraising Fees$0

Functional Expense Allocation

Line ItemProgramManagementFundraisingTotal
Other Salaries and Wages$442,349--$442,349
Current Officers, Directors, Trustees, and Key Employees$74,396$29,758$44,638$148,792
Depreciation Depletion$132,259--$132,259
Other Employee Benefits$45,665$2,630$3,945$52,240
Payroll Taxes$36,589$2,107$3,160$41,856
Advertising$37,049--$37,049
All Other Expenses$30,985--$30,985
Insurance$30,070--$30,070
Fees for Services Accounting-$11,548-$11,548
Office Expenses$8,128$2,021-$10,149
Other Expenses$9,855-$28,661$9,855
Fees for Services Legal-$3,200-$3,200
Total Functional Expenses$907,816$51,264$80,404$1,039,484
Fundraising, Events, and Gaming
Fundraising activities
Yes
Gaming activities
No
Professional fundraiser used
No

Fundraising and Gaming Totals

Line ItemAmount
Fundraising Gross Income$204,975
Fundraising Direct Expenses$31,487
Professional Fundraising Fees$0

Fundraising Events

EventGross ReceiptsGross RevenueDirect ExpensesNet Income
Roundhouse Gala$219,165$175,185$29,907$145,278
Community Events$27,140$27,140$984$26,156
Total Events$246,305$202,325$30,891$171,434
Political and Lobbying Activity
Political campaign activity
No
Lobbying activity
No
Subject to proxy tax
No
Insider Transactions and Loans

Loans and Receivables

Line ItemBeginningEndChange
Receivables from Disqualified Persons-$0-
Receivables from Officers, Directors, Trustees, and Key Employees-$0-
Governance and Compliance

Governance Checklist

Compiled or reviewed by an accountant
No
Annual disclosure for covered persons
Yes
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
Yes
Other officer compensation reviewed
Yes
Conflict-of-interest policy
Yes
Audited financial statements prepared
No
Key decisions subject to board approval
No
Management duties delegated
No

Governance Explanations

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

“Presentation of the Federal Form 990, State Form 199 and RRF-1 to the full Board for review and discussion. The Board votes to approve the signing of the returns by the Treasurer.”

Form 990, Part VI, Section B, Line 12C

“Annual written affirmation of procedures by all members, and at least annual reviews to determine any violations. If any are found, an appointed board committee, after analysis, will come to a determination. If deemed a violation, the board committee will take proper disciplinary and/or correction action.”

Form 990, Part VI, Section B, Line 15A

“The Board annual reviews compensation to all employees, including the Executive Director, and approves increases in salary, if applicable, and annual bonuses.”

Form 990, Part VI, Section C, Line 19

“Requests for copies of the annual Form 990 are approved by the Board and then released.”

Filing and Contact Details

Filer

Filer Name
Oceanographic Teaching Stations Inc
EIN
95-3409019
Phone
3105926010
Address
P O Box 1, Manhattan Beach, CA 90267

Signing Officer

Name
Owen Murray
Title
Treasurer
Signed
2025-12-15
Discuss with paid preparer
Yes

Organization Details

Principal Officer
Owen Murray
Formed
1979
Legal Domicile
CA
Voting Board Members
14
Independent Board Members
14
Employees
14
Volunteers
101

Preparer

Firm
Tramel Tax & Accounting Inc
Address
6475 Pacific Coast Hwy 244, Long Beach, CA 90803
Preparer
Susan T Patterson
Phone
5628050829
Raw XML AppendixShowing 400 of 519 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/AccountantCompileOrReviewInd0false
IRS990/AccountsPayableAccrExpnssGrp/BOYAmt015235
IRS990/AccountsPayableAccrExpnssGrp/EOYAmt018556
IRS990/AccountsReceivableGrp/BOYAmt03945
IRS990/AccountsReceivableGrp/EOYAmt00
IRS990/ActivitiesConductedPrtshpInd0false
IRS990/ActivityOrMissionDesc0The specific and primary purposes are to foster and promote the public study of, and interest in, the oceans, tidelands and beaches of Southern California, the marine life therein, and the impact of human population on that environment. OTS and the Roundhouse have been fulfilling this mission since 1979, in the heart of Downtown Manhattan Beach, at the very end of the Manhattan Beach Pier.
IRS990/AdvertisingGrp/ProgramServicesAmt037049
IRS990/AdvertisingGrp/TotalAmt037049
IRS990/AllOtherContributionsAmt0692525
IRS990/AllOtherExpensesGrp/ProgramServicesAmt030985
IRS990/AllOtherExpensesGrp/TotalAmt030985
IRS990/AnnualDisclosureCoveredPrsnInd0true
IRS990/BackupWthldComplianceInd0false
IRS990/BenefitsToMembersGrp/TotalAmt00
IRS990/BooksInCareOfDetail/PersonNm0Chuck Milam
IRS990/BooksInCareOfDetail/PhoneNum03103798117
IRS990/BooksInCareOfDetail/USAddress/AddressLine1Txt0P O Box 1
IRS990/BooksInCareOfDetail/USAddress/CityNm0Manhattan Beach
IRS990/BooksInCareOfDetail/USAddress/StateAbbreviationCd0CA
IRS990/BooksInCareOfDetail/USAddress/ZIPCd090266
IRS990/BusinessRlnWith35CtrlEntInd0false
IRS990/BusinessRlnWithFamMemInd0false
IRS990/BusinessRlnWithOrgMemInd0false
IRS990/CashNonInterestBearingGrp/BOYAmt093064
IRS990/CashNonInterestBearingGrp/EOYAmt026307
IRS990/ChangeToOrgDocumentsInd0false
IRS990/CntrctRcvdGreaterThan100KCnt00
IRS990/CollectionsOfArtInd0false
IRS990/CompCurrentOfcrDirectorsGrp/FundraisingAmt044638
IRS990/CompCurrentOfcrDirectorsGrp/ManagementAndGeneralAmt029758
IRS990/CompCurrentOfcrDirectorsGrp/ProgramServicesAmt074396
IRS990/CompCurrentOfcrDirectorsGrp/TotalAmt0148792
IRS990/CompDisqualPersonsGrp/TotalAmt00
IRS990/CompensationFromOtherSrcsInd0false
IRS990/CompensationProcessCEOInd0true
IRS990/CompensationProcessOtherInd0true
IRS990/ConferencesMeetingsGrp/TotalAmt00
IRS990/ConflictOfInterestPolicyInd0true
IRS990/ConservationEasementsInd0false
IRS990/ConsolidatedAuditFinclStmtInd0false
IRS990/ContriRptFundraisingEventAmt043980
IRS990/CreditCounselingInd0false
IRS990/CYBenefitsPaidToMembersAmt00
IRS990/CYContributionsGrantsAmt0736505
IRS990/CYGrantsAndSimilarPaidAmt00
IRS990/CYInvestmentIncomeAmt025706
IRS990/CYOtherExpensesAmt0354247
IRS990/CYOtherRevenueAmt0173488
IRS990/CYProgramServiceRevenueAmt0159368
IRS990/CYRevenuesLessExpensesAmt055583
IRS990/CYSalariesCompEmpBnftPaidAmt0685237
IRS990/CYTotalExpensesAmt01039484
IRS990/CYTotalFundraisingExpenseAmt080404
IRS990/CYTotalProfFndrsngExpnsAmt00
IRS990/CYTotalRevenueAmt01095067
IRS990/DecisionsSubjectToApprovaInd0false
IRS990/DeductibleArtContributionInd0false
IRS990/DeductibleNonCashContriInd0true
IRS990/DelegationOfMgmtDutiesInd0false
IRS990/DepreciationDepletionGrp/ProgramServicesAmt0132259
IRS990/DepreciationDepletionGrp/TotalAmt0132259
IRS990/Desc0Teaching local Marine Biology and Oceanographic courses to K-12 Students and maintain an operational acquarium for public viewing.
IRS990/DescribedInSection501c3Ind0true
IRS990/DisregardedEntityInd0false
IRS990/DocumentRetentionPolicyInd0true
IRS990/DonorAdvisedFundInd0false
IRS990/DonorRstrOrQuasiEndowmentsInd0false
IRS990/ElectionOfBoardMembersInd0false
IRS990/EmployeeCnt014
IRS990/EmploymentTaxReturnsFiledInd0true
IRS990/EngagedInExcessBenefitTransInd0false
IRS990/ExpenseAmt0907816
IRS990/FamilyOrBusinessRlnInd0false
IRS990/FederalGrantAuditRequiredInd0false
IRS990/FeesForServicesAccountingGrp/ManagementAndGeneralAmt011548
IRS990/FeesForServicesAccountingGrp/TotalAmt011548
IRS990/FeesForServicesLegalGrp/ManagementAndGeneralAmt03200
IRS990/FeesForServicesLegalGrp/TotalAmt03200
IRS990/FeesForServicesLobbyingGrp/TotalAmt00
IRS990/FeesForServicesManagementGrp/TotalAmt00
IRS990/FeesForServicesOtherGrp/TotalAmt00
IRS990/FeesForServicesProfFundraising/TotalAmt00
IRS990/FeesForSrvcInvstMgmntFeesGrp/TotalAmt00
IRS990/ForeignActivitiesInd0false
IRS990/ForeignFinancialAccountInd0false
IRS990/ForeignGrantsGrp/TotalAmt00
IRS990/ForeignOfficeInd0false
IRS990/Form1098CFiledInd0false
IRS990/Form8282FiledCnt00
IRS990/Form8282PropertyDisposedOfInd0false
IRS990/Form8899Filedind0false
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt00.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt10.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt20.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt30.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt40.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt50.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt60.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt70.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt80.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt90.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt100.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt110.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt120.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt130.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRltdOrgRt140.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt040.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt12.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt22.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt31.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt44.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt52.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt61.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt71.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt81.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt93.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt103.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt111.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt121.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt131.00
IRS990/Form990PartVIISectionAGrp/AverageHoursPerWeekRt141.00
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd0X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd1X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd2X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd3X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd4X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd5X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd6X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd7X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd8X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd9X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd10X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd11X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd12X
IRS990/Form990PartVIISectionAGrp/IndividualTrusteeOrDirectorInd13X
IRS990/Form990PartVIISectionAGrp/OfficerInd0X
IRS990/Form990PartVIISectionAGrp/OfficerInd1X
IRS990/Form990PartVIISectionAGrp/OfficerInd2X
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt00
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt10
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt20
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt30
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt40
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt50
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt60
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt70
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt80
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt90
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt100
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt110
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt120
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt130
IRS990/Form990PartVIISectionAGrp/OtherCompensationAmt140
IRS990/Form990PartVIISectionAGrp/PersonNm0Grace Adams
IRS990/Form990PartVIISectionAGrp/PersonNm1Matt Friedman
IRS990/Form990PartVIISectionAGrp/PersonNm2Owen Murray
IRS990/Form990PartVIISectionAGrp/PersonNm3Mark Burton
IRS990/Form990PartVIISectionAGrp/PersonNm4Hillel Cohn
IRS990/Form990PartVIISectionAGrp/PersonNm5John Roberts
IRS990/Form990PartVIISectionAGrp/PersonNm6Chuck Milam
IRS990/Form990PartVIISectionAGrp/PersonNm7Paul Konwiser
IRS990/Form990PartVIISectionAGrp/PersonNm8Michael Greenberg
IRS990/Form990PartVIISectionAGrp/PersonNm9Lynne Gross
IRS990/Form990PartVIISectionAGrp/PersonNm10Robin Curren
IRS990/Form990PartVIISectionAGrp/PersonNm11Richard Fruin
IRS990/Form990PartVIISectionAGrp/PersonNm12Richard Montgomery
IRS990/Form990PartVIISectionAGrp/PersonNm13Martha Tapias-Mansfield
IRS990/Form990PartVIISectionAGrp/PersonNm14Jessica Vincent
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt0148792
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt10
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt20
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt30
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt40
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt50
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt60
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt70
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt80
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt90
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt100
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt110
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt120
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt130
IRS990/Form990PartVIISectionAGrp/ReportableCompFromOrgAmt140
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt00
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt10
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt20
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt30
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt40
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt50
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt60
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt70
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt80
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt90
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt100
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt110
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt120
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt130
IRS990/Form990PartVIISectionAGrp/ReportableCompFromRltdOrgAmt140
IRS990/Form990PartVIISectionAGrp/TitleTxt0Executive Director
IRS990/Form990PartVIISectionAGrp/TitleTxt1Director
IRS990/Form990PartVIISectionAGrp/TitleTxt2Treasurer
IRS990/Form990PartVIISectionAGrp/TitleTxt3Director
IRS990/Form990PartVIISectionAGrp/TitleTxt4Chairman
IRS990/Form990PartVIISectionAGrp/TitleTxt5Director
IRS990/Form990PartVIISectionAGrp/TitleTxt6Director
IRS990/Form990PartVIISectionAGrp/TitleTxt7Director
IRS990/Form990PartVIISectionAGrp/TitleTxt8Director
IRS990/Form990PartVIISectionAGrp/TitleTxt9Director
IRS990/Form990PartVIISectionAGrp/TitleTxt10Director
IRS990/Form990PartVIISectionAGrp/TitleTxt11Secretary
IRS990/Form990PartVIISectionAGrp/TitleTxt12Director
IRS990/Form990PartVIISectionAGrp/TitleTxt13Director
IRS990/Form990PartVIISectionAGrp/TitleTxt14Director
IRS990/Form990ProvidedToGvrnBodyInd0true
IRS990/FormationYr01979
IRS990/FormerOfcrEmployeesListedInd0false
IRS990/FSAuditedInd0false
IRS990/FundraisingActivitiesInd0true
IRS990/FundraisingAmt043980
IRS990/FundraisingDirectExpensesAmt031487
IRS990/FundraisingGrossIncomeAmt0204975
IRS990/GainOrLossGrp/OtherAmt0-18745
IRS990/GainOrLossGrp/SecuritiesAmt010659
IRS990/GamingActivitiesInd0false
IRS990/GoverningBodyVotingMembersCnt014
IRS990/GrantsToDomesticIndividualsGrp/TotalAmt00
IRS990/GrantsToDomesticOrgsGrp/TotalAmt00
IRS990/GrantsToIndividualsInd0false
IRS990/GrantsToOrganizationsInd0false
IRS990/GrantToRelatedPersonInd0false
IRS990/GrossAmountSalesAssetsGrp/SecuritiesAmt0107250
IRS990/GrossReceiptsAmt01241890
IRS990/GroupReturnForAffiliatesInd0false
IRS990/IncludeFIN48FootnoteInd0false
IRS990/IncmFromInvestBondProceedsGrp/TotalRevenueColumnAmt00
IRS990/IndependentAuditFinclStmtInd0false
IRS990/IndependentVotingMemberCnt014
IRS990/IndivRcvdGreaterThan100KCnt01
IRS990/IndoorTanningServicesInd0false
IRS990/InfoInScheduleOPartVIInd0X
IRS990/InformationTechnologyGrp/TotalAmt00
IRS990/InsuranceGrp/ProgramServicesAmt030070
IRS990/InsuranceGrp/TotalAmt030070
IRS990/IntangibleAssetsGrp/EOYAmt00
IRS990/InterestGrp/TotalAmt00
IRS990/InventoriesForSaleOrUseGrp/EOYAmt00
IRS990/InvestmentExpenseAmt0-2812
IRS990/InvestmentIncomeGrp/ExclusionAmt033792
IRS990/InvestmentIncomeGrp/TotalRevenueColumnAmt033792
IRS990/InvestmentInJointVentureInd0false
IRS990/InvestmentsOtherSecuritiesGrp/EOYAmt00
IRS990/InvestmentsProgramRelatedGrp/EOYAmt00
IRS990/InvestmentsPubTradedSecGrp/BOYAmt0546110
IRS990/InvestmentsPubTradedSecGrp/EOYAmt0751279
IRS990/IRPDocumentCnt00
IRS990/IRPDocumentW2GCnt00
IRS990/LandBldgEquipAccumDeprecAmt0746432
IRS990/LandBldgEquipBasisNetGrp/BOYAmt01131699
IRS990/LandBldgEquipBasisNetGrp/EOYAmt01014696
IRS990/LandBldgEquipCostOrOtherBssAmt01761128
IRS990/LegalDomicileStateCd0CA
IRS990/LessCostOthBasisSalesExpnssGrp/OtherAmt018745
IRS990/LessCostOthBasisSalesExpnssGrp/SecuritiesAmt096591
IRS990/LoanOutstandingInd0false
IRS990/LobbyingActivitiesInd0false
IRS990/LocalChaptersInd0false
IRS990/MaterialDiversionOrMisuseInd0false
IRS990/MembersOrStockholdersInd0false
IRS990/MethodOfAccountingCashInd0X
IRS990/MinutesOfCommitteesInd0true
IRS990/MinutesOfGoverningBodyInd0true
IRS990/MissionDesc0The specific and primary purposes are to foster and promote the public study of, and interest in, the oceans, tidelands and beaches of Southern California, the marine life therein, and the impact of human population on that environment. OTS and the Roundhouse have been fulfilling this mission since 1979, in the heart of Downtown Manhattan Beach, at the very end of the Manhattan Beach Pier.
IRS990/MoreThan5000KToIndividualsInd0false
IRS990/MoreThan5000KToOrgInd0false
IRS990/NetAssetsOrFundBalancesBOYAmt01759583
IRS990/NetAssetsOrFundBalancesEOYAmt01895045
IRS990/NetGainOrLossInvestmentsGrp/RelatedOrExemptFuncIncomeAmt0-8086
IRS990/NetGainOrLossInvestmentsGrp/TotalRevenueColumnAmt0-8086
IRS990/NetIncmFromFundraisingEvtGrp/TotalRevenueColumnAmt0173488
IRS990/NetIncomeFromGamingGrp/TotalRevenueColumnAmt00
IRS990/NetIncomeOrLossGrp/TotalRevenueColumnAmt00
IRS990/NetRentalIncomeOrLossGrp/TotalRevenueColumnAmt00
IRS990/NetUnrlzdGainsLossesInvstAmt032950
IRS990/NoDonorRestrictionNetAssetsGrp/BOYAmt01759583
IRS990/NoDonorRestrictionNetAssetsGrp/EOYAmt01895045
IRS990/NoListedPersonsCompensatedInd0X
IRS990/NoncashContributionsAmt043980
IRS990/NondeductibleContributionsInd0false
IRS990/OccupancyGrp/TotalAmt00
IRS990/OfficeExpensesGrp/ManagementAndGeneralAmt02021
IRS990/OfficeExpensesGrp/ProgramServicesAmt08128
IRS990/OfficeExpensesGrp/TotalAmt010149
IRS990/OfficerMailingAddressInd0false
IRS990/OperateHospitalInd0false
IRS990/Organization501c3Ind0X
IRS990/OrganizationFollowsFASB117Ind0X
IRS990/OtherAssetsTotalGrp/EOYAmt0481
IRS990/OtherEmployeeBenefitsGrp/FundraisingAmt03945
IRS990/OtherEmployeeBenefitsGrp/ManagementAndGeneralAmt02630
IRS990/OtherEmployeeBenefitsGrp/ProgramServicesAmt045665
IRS990/OtherEmployeeBenefitsGrp/TotalAmt052240
IRS990/OtherExpensesGrp/Desc0Repairs and Maintenance
IRS990/OtherExpensesGrp/Desc1Classes & Outreach
IRS990/OtherExpensesGrp/Desc2Fundraising costs
IRS990/OtherExpensesGrp/Desc3Animal Care
IRS990/OtherExpensesGrp/FundraisingAmt028661
IRS990/OtherExpensesGrp/ProgramServicesAmt031160
IRS990/OtherExpensesGrp/ProgramServicesAmt129311
IRS990/OtherExpensesGrp/ProgramServicesAmt29855
IRS990/OtherExpensesGrp/TotalAmt031160
IRS990/OtherExpensesGrp/TotalAmt129311
IRS990/OtherExpensesGrp/TotalAmt228661
IRS990/OtherExpensesGrp/TotalAmt39855
IRS990/OtherRevenueTotalAmt00
IRS990/OtherSalariesAndWagesGrp/ProgramServicesAmt0442349
IRS990/OtherSalariesAndWagesGrp/TotalAmt0442349
IRS990/OthNotesLoansReceivableNetGrp/EOYAmt00
IRS990/OwnWebsiteInd0X
IRS990/PartialLiquidationInd0false
IRS990/PaymentsToAffiliatesGrp/TotalAmt00
IRS990/PayPremiumsPrsnlBnftCntrctInd0false
IRS990/PayrollTaxesGrp/FundraisingAmt03160
IRS990/PayrollTaxesGrp/ManagementAndGeneralAmt02107
IRS990/PayrollTaxesGrp/ProgramServicesAmt036589
IRS990/PayrollTaxesGrp/TotalAmt041856
IRS990/PensionPlanContributionsGrp/TotalAmt00
IRS990/PledgesAndGrantsReceivableGrp/EOYAmt00
IRS990/PoliticalCampaignActyInd0false
IRS990/PrepaidExpensesDefrdChargesGrp/EOYAmt00
IRS990/PrincipalOfficerNm0Owen Murray
IRS990/PriorPeriodAdjustmentsAmt049741
IRS990/ProfessionalFundraisingInd0false
IRS990/ProgramServiceRevenueGrp/BusinessCd0611710
IRS990/ProgramServiceRevenueGrp/Desc0Marine Biology Classes
IRS990/ProgramServiceRevenueGrp/RelatedOrExemptFuncIncomeAmt0159368
IRS990/ProgramServiceRevenueGrp/TotalRevenueColumnAmt0159368
IRS990/ProhibitedTaxShelterTransInd0false
IRS990/PYContributionsGrantsAmt0638572
IRS990/PYExcessBenefitTransInd0false
IRS990/PYInvestmentIncomeAmt029890
IRS990/PymtTravelEntrtnmntPubOfclGrp/TotalAmt00
IRS990/PYOtherExpensesAmt0373381
IRS990/PYOtherRevenueAmt064421
IRS990/PYProgramServiceRevenueAmt0164599
IRS990/PYRevenuesLessExpensesAmt0-120798
IRS990/PYSalariesCompEmpBnftPaidAmt0644899
IRS990/PYTotalExpensesAmt01018280
IRS990/PYTotalRevenueAmt0897482
IRS990/QuidProQuoContributionsInd0false
IRS990/RcvblFromDisqualifiedPrsnGrp/EOYAmt00
IRS990/RcvFndsToPayPrsnlBnftCntrctInd0false
IRS990/ReceivablesFromOfficersEtcGrp/EOYAmt00
IRS990/ReconcilationRevenueExpnssAmt055583
IRS990/RegularMonitoringEnfrcInd0true
IRS990/RelatedEntityInd0false
IRS990/RelatedOrganizationCtrlEntInd0false
IRS990/ReportInvestmentsOtherSecInd0false
IRS990/ReportLandBuildingEquipmentInd0true
IRS990/ReportOtherAssetsInd0false
IRS990/ReportOtherLiabilitiesInd0false
IRS990/ReportProgramRelatedInvstInd0false
IRS990/RoyaltiesGrp/TotalAmt00
IRS990/RoyaltiesRevenueGrp/TotalRevenueColumnAmt00
IRS990/SavingsAndTempCashInvstGrp/EOYAmt0120838
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearAmt0736505
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus1YearAmt0638572
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus2YearsAmt0756988
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus3YearsAmt0683793
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/CurrentTaxYearMinus4YearsAmt0644091
IRS990ScheduleA/GiftsGrantsContriRcvd170Grp/TotalAmt03459949
IRS990ScheduleA/GovtFurnSrvcFcltsVl170Grp/TotalAmt00
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearAmt025706
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus1YearAmt020
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus2YearsAmt026522
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus3YearsAmt010383
IRS990ScheduleA/GrossInvestmentIncome170Grp/CurrentTaxYearMinus4YearsAmt099165
IRS990ScheduleA/GrossInvestmentIncome170Grp/TotalAmt0161796
IRS990ScheduleA/OtherIncome170Grp/TotalAmt00
IRS990ScheduleA/PublicOrganization170Ind0X
IRS990ScheduleA/PublicSupportCY170Pct00.64870
IRS990ScheduleA/PublicSupportPY170Pct00.77690
IRS990ScheduleA/PublicSupportTotal170Amt02349332
IRS990ScheduleA/SubstantialContributorsTotAmt01110617
IRS990ScheduleA/TaxRevLeviedOrgnztnlBnft170Grp/TotalAmt00
IRS990ScheduleA/ThirtyThrPctSuprtTestsCY170Ind0X
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearAmt0736505
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus1YearAmt0638572
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus2YearsAmt0756988
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus3YearsAmt0683793
IRS990ScheduleA/TotalCalendarYear170Grp/CurrentTaxYearMinus4YearsAmt0644091
IRS990ScheduleA/TotalCalendarYear170Grp/TotalAmt03459949
IRS990ScheduleA/TotalSupportAmt03621745
IRS990ScheduleA/UnrelatedBusinessNetIncm170Grp/TotalAmt00
IRS990ScheduleB/ContributorInformationGrp/ContributorBusinessName/BusinessNameLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorNum0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine10RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/AddressLine20RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/City0RESTRICTED
IRS990ScheduleB/ContributorInformationGrp/ContributorUSAddress/State0RESTRICTED

Document Assets

No mirrored PDF or thumbnail assets are attached yet.

Filings

Displayed year

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

Open filing
Assets
$1,913,601
Liabilities
$18,556
Net assets
$1,895,045
Revenue
$1,095,067
Expenses
$1,039,484
Net income
$55,583
Balance SheetOperations
YearAssetsLiabilitiesNet AssetsRevenueExpensesNet Income
2025Detailed filing. Detailed filing data is available for this year.$1.91$0.02$1.90$1.10$1.04$0.06
2023Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.93$0.02$1.91$0.98$0.87$0.11
2022XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$1.85$0.05$1.80$0.81$0.75$0.06
2021Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.80$0.02$1.78$0.67$0.64$0.03
2020Facts available. Structured filing facts are available, but richer extracted sections are limited.$1.66$0.01$1.66$0.54$0.69$0.14
2019Summary only. Only limited summary data is available for this year.$1.72$0.01$1.71$1.86$0.66$1.20
2018XML pending. An XML filing is linked for this year, but detailed extraction is still pending.$0.52$0.00$0.52$0.34$0.36$0.02
2017Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.54$0.00$0.54$0.43$0.33$0.10
2016Detailed filing. Detailed filing data is available for this year.$0.44$0.00$0.44$0.29$0.32$0.03
2015Detailed filing. Detailed filing data is available for this year.$0.48$0.00$0.47$0.28$0.27$0.01
2014Detailed filing. Detailed filing data is available for this year.$0.46$0.00$0.46$0.26$0.24$0.02
2013Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.44$0.00$0.44$0.24
2012Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.44$0.00$0.44$0.26
2011Facts available. Structured filing facts are available, but richer extracted sections are limited.$0.43$0.00$0.43$0.25