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MARION WALTERS WING TR UW RESID

EIN 23-7688668 BOSTON, MA

Browse the largest nonprofits in Massachusetts

Revenue 2024
$876,814
Expenses 2024
$354,171

Program services were 84.4% of total expenses calculated — Part IX's program-services column over total expenses, both as filed.

As filed

Subsection
03
Classification
1000
Street
ONE POST OFFICE SQUARE

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).

Other organizations at this address

7 other organizations in the IRS Business Master File list the same street address. matched by us

We match the street line and ZIP code as the IRS gives them, ignoring case and outer spaces and nothing else, so "AVE" and "AVENUE" count as different streets and this list can miss some. A shared address can mean related organizations or a shared office, but it can also be a registered agent, a mail drop or a service provider holding mail for unrelated clients. It is not, by itself, evidence that two organizations are connected.

Mission and programs · 2024

Mission

TO PROVIDE "CAMPERSHIPS" TO CAMP JOSLIN FOR NEEDY BOYS WITH DIABETES.

Activities or mission (Part I)

TUITION FOR NEEDY BOYS TO ATTEND THE SUMMER CAMP OF ELLIOT P. JOSLIN CAMP FOR BOYS WITH DIABETES.

  • PAYMENT TO THE BARTON CENTER FOR DIABETES EDUCATION FOR THE BENEFIT OF AND TO CARRY OUT THE PURPOSES OF CAMP JOSLIN, INCLUDING FOR "CAMPERSHIPS" FOR NEEDY BOYS WITH DIABETES AND FOR OTHER OPERATING AND CAPITAL SUPPORT.

    Expenses $298,882 · Grants $298,882

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.

  • Joan Mansfield MD

    TRUSTEE

    Total calculated
    $0
    Hours/week
    0.4

  • Mark Fuller

    TRUSTEE

    Total calculated
    $0
    Hours/week
    0.4

  • Michael Kasparian

    TRUSTEE

    Total calculated
    $0
    Hours/week
    0.4

  • Richard MacDonald

    TRUSTEE

    Total calculated
    $0
    Hours/week
    0.4

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
    $876,814
    Expenses
    $354,171
    Contributions
    $0
    Grants paid
    $298,882
  • 2023
    Revenue
    $921,628
    Expenses
    $840,620
    Contributions
    $0
    Grants paid
    $782,900
  • 2022
    Revenue
    $622,521
    Expenses
    $344,477
    Contributions
    $0
    Grants paid
    $295,000

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
    $273,456
    Expenses
    $352,819
    Assets (EOY)
    $7,844,755

  • 2020 · 990

    Revenue
    $505,249
    Expenses
    $316,700
    Assets (EOY)
    $9,147,987

  • 2019 · 990

    Revenue
    $308,937
    Expenses
    $303,941
    Assets (EOY)
    $7,679,859

  • 2018 · 990

    Revenue
    $291,298
    Expenses
    $298,531
    Assets (EOY)
    $7,724,865

  • 2017 · 990

    Revenue
    $478,869
    Expenses
    $284,786
    Assets (EOY)
    $7,139,115

  • 2016 · 990

    Revenue
    $420,680
    Expenses
    $275,470
    Assets (EOY)
    $6,954,197

  • 2015 · 990

    Revenue
    $313,180
    Expenses
    $492,276
    Assets (EOY)
    $6,351,374

  • 2014 · 990

    Revenue
    $467,162
    Expenses
    $38,415
    Assets (EOY)
    $4,932,623

  • 2013 · 990

    Revenue
    $450,128
    Expenses
    $294,296
    Assets (EOY)
    $4,503,876

  • 2012 · 990

    Revenue
    not reported
    Expenses
    $138,846
    Assets (EOY)
    $4,348,044

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

Where these grants went next →

Grants received

No itemized grant names this organization as a recipient. Only grants over $5,000 are itemized, and only by filers of the full Form 990.

Related organizations

From Schedule R Part II, where a filer lists the tax-exempt organizations it is related to by control. It does not record shared board members or money.

Declared on its 2024 return

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 11 November 2026, under deductibility SOUNK.

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.