MARINE TECHNOLOGY SOCIETY INC

WASHINGTON, DC, 20005-5802 (202) 717-8705 Est. 1963 EIN 52-0805471
U21Z - Science & Technology 990 - Public charity return 501(c)(3)
www.mtsociety.org

Mission

Facilitate a broader understanding of the relevance of marine technology to wider global issues by enhancing the dissemination of marine technology information. Promote and improve marine technology and related educational programs. Advance the development of the tools and procedures required to explore, study and further the responsible and sustainable use of the oceans.

Financials

Total Revenue
$6,126,460
Total Expenses
$5,152,646
Net Assets
$9,181,248
12 employees 175 volunteers
From latest filing (tax period ending 2025-06-30)

Financial Health

Operating Reserve
21.4 months Healthy
Net assets / monthly expenses
Year-over-Year Change
Revenue ↑ 14.1%
Expenses ↑ 9.7%
Revenue Sources
Contributions 48.2% Earned revenue 35.0% Investment 10.6% Other 6.0%
Expense Breakdown
Program 83.4% Management 16.6%

Officers & Key Employees (18)

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Grants Received (17)

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Filing History (7 filings)

YearRevenueExpensesNet Assets
2024 990 - Public charity return
Jul 1, 2024 to Jun 30, 2025
$6,126,460 ↑$5,152,646$9,181,248
2023 990 - Public charity return
Jul 1, 2023 to Jun 30, 2024
$5,367,102 ↑$4,697,357$8,087,703
2022 990 - Public charity return
Jul 1, 2022 to Jun 30, 2023
$2,309,568 ↑$2,575,486$6,834,551
2021 990 - Public charity return
Jul 1, 2021 to Jun 30, 2022
$1,889,360 ↑$1,776,751$6,675,726
2020 990 - Public charity return
Jul 1, 2020 to Jun 30, 2021
$493,560 ↓$1,217,947$7,364,262
2019 990 - Public charity return
Jul 1, 2019 to Jun 30, 2020
$2,252,266 ↓$2,507,475$6,954,855
2017 990 - Public charity return
Jul 1, 2017 to Jun 30, 2018
$2,983,768 $3,178,979$7,738,390

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EIN: 52-0805471 · Source: IRS Form 990 e-file data