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NANTUCKET MARIA MITCHELL ASSOC

EIN 04-2129139 NANTUCKET, MA

Browse the largest nonprofits in Massachusetts

Revenue 2024
$3,988,187
Expenses 2024
$3,262,065

Program services were 52.3% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
Classification
2800
Street
4 VESTAL ST

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 MISSION OF THE ASSOCIATION IS PROMOTION OF THE LEGACY OF MARIA MITCHELL AND EXPLORATION, EDUCATION AND ENJOYMENT OF NANTUCKET'S LAND, WATERS AND SKIES BEYOND. IN FULFILLING THE MISSION THEY RECOGNIZE THE HISTORIC PERSONA OF MARIA MITCHELL, THE FOREMOST AMERICAN WOMAN SCIENTIST AND EDUCATOR OF THE 19TH CENTURY, AND HER POTENTIAL IMPACT ON CONTEMPORARY THOUGHT BY PASSING ON HER LEGACY OF INTELLECTUAL CURIOSITY, RESPECT FOR AND LOVE OF NATURE, LEARNING BY DOING, AND THE IDEAL OF INDIVIDUALISM. THE ASSOCIATION'S CONTRIBUTIONS TO ASTRONOMY, SCIENCE, AND EDUCATION ARE THE BASIS FOR THEIR CONTINUING TRADITION OF HIGH QUALITY RESEARCH AND TEACHING WHICH INSPIRES TODAY'S LEARNERS AND TOMORROW'S SCIENTISTS. THE ASSOCIATION ALSO PROVIDES SCIENTIFIC RESOURCES AND EDUCATIONAL PROGRAMS FOR THE COMMUNITY, USES NANTUCKET ISLAND AS AN EXCEPTIONAL NATURAL LABORATORY IN WHICH TO STUDY SCIENCE AND THE ENVIRONMENT, AND MAINTAINS RESEARCH AND/OR REPRESENTATIVE COLLECTIONS OF NANTUCKET'S BIODIVERSITY.

Activities or mission (Part I)

THE NANTUCKET MARIA MITCHELL ASSOCIATION WAS FORMED FOR THE PURPOSE OF RESEARCH AND EDUCATION IN ASTRONOMY AND THE NATURAL SCIENCES.

  • THE ASSOCATION CONDUCTS PROGRAMS OF RESEARCH AND EDUCATION IN ASTRONOMY AND THE NATURAL SCIENCES. FOR THESE PURPOSES IT MAINTAINS TWO OBSERVATORIES, A LIBRARY, AN AQUARIUM & EXHIBIT AND THE MARIA MITCHELL BIRTHPLACE MUSEUM.

    Expenses $1,704,814 · Revenue $1,029,412

As filed on the 2024 return. The filer continues this part on Schedule O, which is not shown here.

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.

  • Helene Weld

    PRESIDENT

    Total calculated
    $0
    Hours/week
    0

  • John Wise

    FIRST VICE PRESIDENT

    Total calculated
    $0
    Hours/week
    0

  • Curt Burwell

    SECOND VICE PRESIDENT

    Total calculated
    $0
    Hours/week
    0

  • Karen Ketterer

    TREASURER

    Total calculated
    $0
    Hours/week
    0

  • Joseph Santucci

    CLERK

    Total calculated
    $0
    Hours/week
    0

  • Richard Bard

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Margaret Falk

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Tanya Forman

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Elizabeth Markel

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Christopher Griffiths

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Toni McKerrow

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Molly Paiement

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • March Archibald Poor

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Brian Sullivan

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Richard Wolfe

    DIRECTOR

    Total calculated
    $0
    Hours/week
    0

  • Joanna Roche

    EXECUTIVE DIRECTOR

    Total calculated
    $247,415
    From this org
    $226,901
    From related orgs
    $0
    Other
    $20,514
    Hours/week
    1

    Schedule J breakdown matched by us

    Base
    $174,975
    Bonus
    $21,926
    Other
    $30,000
    Deferred
    $5,993
    Nontaxable benefits
    $14,521
    Filer's total
    $247,415

  • Kathrine Robinson Grieder

    FINANCE DIRECTOR

    Total calculated
    $106,849
    From this org
    $91,337
    From related orgs
    $0
    Other
    $15,512
    Hours/week
    1

  • Jascin Leonardo Finger

    DEPUTY DIRECTOR

    Total calculated
    $107,693
    From this org
    $103,615
    From related orgs
    $0
    Other
    $4,078
    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. A Schedule J breakdown is as filed: base pay, bonus, other, deferred compensation and nontaxable benefits from this organization, with any from related organizations beside each, and the filer's own total. It is shown with the Part VII listing of the same name on the same return. The form gives no key between the two, so that pairing is ours, and is marked matched by us. Earlier years are each on their own filing page.

Filings

  • 2024
    Revenue
    $3,988,187
    Expenses
    $3,262,065
    Contributions
    $2,714,390
    Grants paid
    $0
  • 2024
    Revenue
    $3,893,261
    Expenses
    $3,370,853
    Contributions
    $2,799,970
    Grants paid
    $0
  • 2023
    Revenue
    $2,885,015
    Expenses
    $3,288,222
    Contributions
    $2,382,117
    Grants paid
    $0
  • 2022
    Revenue
    $2,600,946
    Expenses
    $2,582,338
    Contributions
    $2,149,215
    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

  • 2022 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2021 · 990

    Revenue
    $1,816,824
    Expenses
    $2,087,285
    Assets (EOY)
    $11,737,148

  • 2020 · 990

    Revenue
    $1,574,129
    Expenses
    $1,531,183
    Assets (EOY)
    $11,117,263

  • 2020 · 990-T

    Revenue
    not reported
    Expenses
    not reported
    Assets (EOY)
    not reported

  • 2019 · 990

    Revenue
    $1,210,895
    Expenses
    $1,912,201
    Assets (EOY)
    $10,784,482

  • 2018 · 990

    Revenue
    $1,483,291
    Expenses
    $1,904,769
    Assets (EOY)
    $11,240,929

  • 2017 · 990

    Revenue
    $1,388,846
    Expenses
    $1,708,573
    Assets (EOY)
    $10,702,453

  • 2016 · 990

    Revenue
    $1,593,863
    Expenses
    $2,049,916
    Assets (EOY)
    $10,604,576

  • 2015 · 990

    Revenue
    $1,835,338
    Expenses
    $1,548,502
    Assets (EOY)
    $10,239,423

  • 2014 · 990

    Revenue
    $1,206,436
    Expenses
    $1,514,698
    Assets (EOY)
    $10,755,153

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.