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Nonprofit · EIN 99-0913537

MACKINDER FORUM INC

Tax-exempt · NEW YORK, NY 10009

Financials

$135K$74K2025
Revenue Expenses · by fiscal year end
Financials of MACKINDER FORUM INC by year, from its e-filed returns
Year endedFormRevenueExpensesNet incomeTotal assetsLiabilitiesNet assets
December 31, 2025990-EZ$134,518$73,510$61,008$61,008–$61,008
Financial details: 990-EZ for the year ended December 31, 2025

Revenue

Contributions, gifts and grants
$134,504
Investment income
$14

Expenses

Compensation of officers, directors and key employees
$0
Professional fees and payments to contractors
$17,089
Other expenses
$56,421
Program services (functional)
$49,798

Balance sheet and other

Total assets, start of year
$0
Total assets, end of year
$61,008
Total liabilities, end of year
–
Net assets, end of year
$61,008
Cash, savings and investments
$61,008
Gross receipts
$134,518

From the e-filed returns the IRS publishes as XML (latest three processing years; amended returns replace the original). PDF copies at the IRS.

Officers, directors and key employees

As listed on the 990-EZ for the year ended December 31, 2025, highest compensation first.

NameTitleHours / weekCompensation
Leonard HochbergPresident10$0
Michael HochbergChairman10$0
Christine ClayVice President10$0

Address and contacts

Address (IRS master file)
107 SAINT MARKS PL APT 1H, NEW YORK, NY 10009-5147
In care of
% MICHAEL HOCHBERG
Mailing address (990-N for 2024)
107 St Marks Place 1H, New York NY 10009
Principal officer (990-N for 2024)
Leonard Hochberg, 107 St Marks Place 1H, New York NY 10009
Signed the 990-EZ
Michael Hochberg, Chairman
Phone
(626) 429-4051
Return prepared by
Lear & Pannepacker LLP

Mission

The Mackinder Forum exists as an organization to promote the discussion, understanding, and development of geopolitical thinking. This encompasses an assessment of adjacent fields of concern, including economic statecraft, grand strategy, military affairs, foreign policy development and implementation, the strategic culture of adversaries, and the impact of new technology.A key mission of the Forum is to create an organization where divergent conceptions of national self-interest can be analyzed and discussed. We believe that any formulation of strategy in a world of divergent national interests has to start from an understanding of the perceived self-interest of allies, clients, competitors, and adversaries. Only by understanding the strategic culture and national interest of the contenders for power in the international arena can predictions be made and policy intelligently formulated and implemented.The Mackinder Forum seeks an objective, non-partisan, and disinterested understandin

990-EZ for the year ended December 31, 2025

Program accomplishments

  • The Mackinder Forum advanced its exempt purpose by organizing and hosting educational seminars, lectures, and public discussions focused on geopolitics, grand strategy, economic statecraft, military affairs, foreign policy, and strategic culture. The organization convened scholars, military professionals, policymakers, business leaders, and members of the public to promote nonpartisan analysis of international affairs and the application of geopolitical theory to contemporary global challenges. Programs included virtual and in-person forums, memorial lecture series, and expert panel discussions addressing U.S. national security, global strategic competition, technological change, and international relations. Through these activities, the Forum furthered public education and encouraged informed dialogue on geopolitical issues affecting the United States and its allies.
    Expenses $49,798

What it must file and when

IRS records say it files Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N. Its accounting year ends in December, so each return is due on the 15th day of the 5th month after that.

Tax yearYear endedDueIRS public records
2025December 31, 2025May 15, 2026990-EZ on file
2024December 31, 2024May 15, 2025990-N on file
2023December 31, 2023May 15, 2024No data

IRS record

EIN
99-0913537
Tax-exempt status
501(c)(3): Charitable, religious, educational or scientific organization
Foundation status
Publicly supported organization (170(b)(1)(A)(vi))
Donations deductible (Pub 78)
Public charity, 50% deduction limit
Exempt since
2024
Accounting year ends
December
Files
Form 990 or 990-EZ
Assets (IRS master file)
$61,008
Income (IRS master file)
$134,518

Filing history

FormYear endedRevenueExpensesAssetsReturn
990-EZDecember 2025–––IRS
990-N for 2024
Officer: Leonard Hochberg
December 31, 2024≤ $50,000 receipts––e-Postcard

990-N: the IRS publishes only the latest e-Postcard per organization; earlier years appear here as 990.tax collects the monthly files. 990, 990-EZ, 990-PF, 990-T: every e-filed return in the IRS e-file index since 2019; XML for the latest three processing years, amounts from the IRS Statistics of Income extracts before that. PDF copies and determination letters at the IRS.

Questions about MACKINDER FORUM INC

What is the EIN of MACKINDER FORUM INC?
The employer identification number (EIN) of MACKINDER FORUM INC is 99-0913537.
Is MACKINDER FORUM INC tax-exempt?
Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2024.
Are donations to MACKINDER FORUM INC tax-deductible?
Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
Which annual return does MACKINDER FORUM INC file?
Form 990 or 990-EZ. Based on its last return; a smaller organization may file the 990-N.
When is the next return of MACKINDER FORUM INC due?
The return for tax year 2026 (the year ending December 31, 2026) is due May 17, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
When did MACKINDER FORUM INC last file with the IRS?
The latest return in the IRS public files is the 990-EZ for the year ended December 2025.
Who is the principal officer of MACKINDER FORUM INC?
The 990-N for 2024 names Leonard Hochberg.
Who are the officers and directors of MACKINDER FORUM INC?
The 990-EZ for the year ended December 31, 2025 lists 3 people; 0 received compensation from the organization.
How much revenue does MACKINDER FORUM INC have?
On its 990-EZ for the year ended December 31, 2025 it reported revenue of $134,518, expenses of $73,510 and total assets of $61,008 at year end.

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