Public Charity

MARINE BIOLOGICAL LABORATORY

MARINE BIOLOGICAL LABORATORY is a nonprofit organization categorized as Public Charity based in Woods Hole, MA. Its most recent IRS filing (2025) reports revenue of $55.4M, expenses of $56.3M, total assets of $246.5M. Imperigo tracks 131 reported grant relationships connected to this organization totaling approximately $25.4M.

EIN: 042104690 Woods Hole, MA Biological & Life Sciences NTEE: U50 Latest filing: 2025
Total Revenue$55.4M
Total Expenses$56.3M
Total Assets$246.5M
Grant Records131
Funding Total$25.4M
Filing Years2021–2025

Mission

The Marine Biological Laboratory (MBL) is a world-renowned center for biological discovery and training that is notably affiliated with more than 60 Nobel Prize winners. Research is conducted by full-time faculty as well as hundreds of the world's leading scientists who are attracted by the MBL's unique resources and strengths, and who come to the MBL to conduct research for weeks or months at a time. Their work spans biological scales from molecules and cells to ecosystems. The MBL trains students from high school to postdoctoral levels. Central to the MBL's identity are its advanced graduate level research courses.

Where $100 goes at Marine Biological Laboratory

How Marine Biological Laboratory divides every $100 it spends, from its own Form 990 filings, averaged across 9 years.

$84 Programs the work itself
$13 Management running the organization
$3 Fundraising raising the next dollar

Inside the $84 for programs

$59
The Marine Biological Laboratory (MBL) maintains laboratories for the scientific study and investigation of a wide range of biological topics, from biomedical to ecological research
70% of program spending
$21
The Marine Biological Laboratory (MBL) offers a wide range of scientific courses (from high school to post-doctoral level), workshops, conferences, and internships throughout the year
25% of program spending · Reported in the filing: 500 students
$4
Visiting (Whitman) Research
5% of program spending
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Source: Form 990 filings with the IRS, latest fiscal year 2025. Shares are from the organization's reported expenses. Data by Imperigo; not affiliated with the IRS.

Officers & Directors

Senior Scientist Alexandra Z Worden Phd
Director of Research Anne Sylvester
Former Chair of the Board of Trustees A Paul Alivisatos
Trustee Avram Hershko
Trustee Brien Obrien
Trustee Catherine E Hibbitt

Officer compensation and complete director data available with membership.

Top Grant Purposes

General Support
$15,197,859 77 grants
Research & Policy
$5,933,715 20 grants
Fundraising & Sponsorship
$2,023,965 10 grants
Education
$1,184,491 5 grants
Environment & Conservation
$181,000 4 grants

Financial Trends

Year Revenue Expenses Assets
2025 $55.4M $56.3M $246.5M
2024 $57.3M $55.7M $245.0M
2023 $53.6M $54.0M $238.7M
2022 $59.8M $49.0M $237.6M
2021 $44.9M $41.0M $244.1M

Between 2021 and 2025, reported annual revenue grew from $44.9M to $55.4M (+23%), with total assets most recently reported at $246.5M.

Interactive year-over-year charts and full filing details available with membership.

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