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OCEANOGRAPHIC TEACHING STATIONS INC

EIN 95-3409019 MANHATTAN BCH, CA

Browse the largest nonprofits in California

Revenue 2024
$1,095,067
Expenses 2024
$1,039,484

Program services were 87.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
NTEE code
B9XZ
Classification
2000
Street
PO BOX 1

These codes are the IRS's own and are shown exactly as filed. What each one means is in the Business Master File documentation (opens in a new tab).

Mission and programs · 2024

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.

  • Teaching local Marine Biology and Oceanographic courses to K-12 Students and maintain an operational acquarium for public viewing.

    Expenses $907,816

As filed on the 2024 return.

Officers and directors · 2024

As listed in Part VII of the 2024 return, in the order the filer printed them. Each return names its own; this is not a roster the organization keeps with us.

  • Grace Adams

    Executive Director

    Total calculated
    $148,792
    From this org
    $148,792
    From related orgs
    $0
    Other
    $0
    Hours/week
    40

  • Matt Friedman

    Director

    Total calculated
    $0
    Hours/week
    2

  • Owen Murray

    Treasurer

    Total calculated
    $0
    Hours/week
    2

  • Mark Burton

    Director

    Total calculated
    $0
    Hours/week
    1

  • Hillel Cohn

    Chairman

    Total calculated
    $0
    Hours/week
    4

  • John Roberts

    Director

    Total calculated
    $0
    Hours/week
    2

  • Chuck Milam

    Director

    Total calculated
    $0
    Hours/week
    1

  • Paul Konwiser

    Director

    Total calculated
    $0
    Hours/week
    1

  • Michael Greenberg

    Director

    Total calculated
    $0
    Hours/week
    1

  • Lynne Gross

    Director

    Total calculated
    $0
    Hours/week
    3

  • Robin Curren

    Director

    Total calculated
    $0
    Hours/week
    3

  • Richard Fruin

    Secretary

    Total calculated
    $0
    Hours/week
    1

  • Richard Montgomery

    Director

    Total calculated
    $0
    Hours/week
    1

  • Martha Tapias-Mansfield

    Director

    Total calculated
    $0
    Hours/week
    1

  • Jessica Vincent

    Director

    Total calculated
    $0
    Hours/week
    1

Compensation is as filed in Part VII: reportable pay from this organization and from related organizations, other compensation, and hours per week. The total, marked calculated, is our sum of the three dollar columns, with a blank column counted as $0; the form itself has no total. On a Form 990-EZ the columns are Part IV's instead, and on a Form 990-PF Part VIII's — compensation, contributions to benefit plans, and expense account — and the total sums those. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $1,095,067
    Expenses
    $1,039,484
    Contributions
    $736,505
    Grants paid
    $0
  • 2023
    Revenue
    $897,482
    Expenses
    $1,018,280
    Contributions
    $638,572
    Grants paid
    $0
  • 2022
    Revenue
    $981,795
    Expenses
    $871,558
    Contributions
    $629,693
    Grants paid
    $0

The four totals the IRS asks for on Part I of the Form 990, as filed. A dash means the figure was not present on the return — not that it was zero.

Other returns filed

  • 2021 · 990

    Revenue
    $812,678
    Expenses
    $752,510
    Assets (EOY)
    $1,852,284

  • 2020 · 990

    Revenue
    $672,221
    Expenses
    $644,781
    Assets (EOY)
    $1,797,126

  • 2019 · 990

    Revenue
    $544,141
    Expenses
    $685,204
    Assets (EOY)
    $1,663,196

  • 2018 · 990

    Revenue
    $1,860,548
    Expenses
    $663,627
    Assets (EOY)
    $1,717,889

  • 2017 · 990

    Revenue
    $335,409
    Expenses
    $359,029
    Assets (EOY)
    $519,246

  • 2016 · 990

    Revenue
    $427,178
    Expenses
    $326,321
    Assets (EOY)
    $543,484

  • 2015 · 990

    Revenue
    $289,409
    Expenses
    $322,223
    Assets (EOY)
    $442,504

  • 2014 · 990

    Revenue
    $283,283
    Expenses
    $268,532
    Assets (EOY)
    $475,318

  • 2013 · 990

    Revenue
    $263,673
    Expenses
    $243,786
    Assets (EOY)
    $460,567

  • 2012 · 990

    Revenue
    not reported
    Expenses
    $235,130
    Assets (EOY)
    $440,981

Nonprofiteer parses Forms 990, 990-EZ and 990-PF, in a window of recent tax years. These returns are recorded from the IRS e-file index, so their figures were extracted by that index rather than read from the return here — treat them as a different source from the filings above, not as more of the same record. A dash means the index carries no figure; Form 990-T listings carry none at all. Showing the 10 most recent; the API carries the rest.

Grants made

No itemized grants to organizations. Schedule I is filed only by organizations that granted more than $5,000 to a recipient, so most filers have none.

Grants received

The 10 largest by cash amount. The API serves every itemized grant.

Other IRS files

Auto-Revocation List

Not listed. The IRS publishes this list for organizations whose exemption was automatically revoked for failing to file for three consecutive years.

Publication 78

Listed as of 13 October 2026, under deductibility PC.

These are two separate IRS files on two separate schedules, shown as published and not reconciled with each other. Neither is a statement about whether a contribution is deductible today: 19,245 organizations appear in Publication 78 while the IRS's own revocation file lists them as currently revoked, more than half of those revoked before 2019. Absence from Publication 78 is evidence of nothing, and presence is not evidence either. Verify current status with the IRS before relying on it.

What this page reflects

The registration facts above come from the IRS Business Master File published 9 November 2026 and read 9 November 2026, for every organization at once. Returns through tax year 2024, the newest we have parsed for this organization.