Nonprofit · EIN 55-0799211
AMERICAN CENTER FOR MONGOLIAN STUDIES
Also known as JONATHAN ADDLETON
Tax-exempt · PHILADELPHIA, PA 19104
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| September 30, 2025 | 990 | $468,688 | $505,194 | -$36,506 | $857,759 | $10,794 | $846,965 |
| September 30, 2024 | 990 | $349,252 | $416,960 | -$67,708 | $874,183 | $35,033 | $839,150 |
| September 30, 2023 | 990 | $855,497 | $489,766 | $365,731 | $903,010 | $8,258 | $894,752 |
Financial details: 990 for the year ended September 30, 2025
Revenue
- Contributions, gifts and grants
- $254,034
- of which government grants
- $226,469
- Membership dues
- $6,960
- Program service revenue
- $186,340
- Investment income
- $28,314
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $69,150
- Compensation of officers, directors and key employees
- $72,132
- Other salaries and wages
- $79,608
- Salaries, compensation and benefits (total)
- $168,944
- Professional fundraising fees
- $0
- Accounting fees
- $19,102
- Occupancy
- $14,420
- Travel
- $22,581
- Depreciation
- $1,132
- Program services (functional)
- $366,991
- Management and general (functional)
- $138,203
Balance sheet and other
- Total assets, start of year
- $874,183
- Total assets, end of year
- $857,759
- Total liabilities, end of year
- $10,794
- Net assets, end of year
- $846,965
- Land, buildings and equipment
- $3,444
- Publicly traded securities
- $136,736
- Net assets without donor restrictions
- $842,370
- Net assets with donor restrictions
- $4,595
- Gross receipts
- $468,688
- Employees
- 3
- Volunteers
- 16
- Year formed
- 2002
- State of legal domicile
- TX
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 for the year ended September 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Maggie Lindrooth | US Director Officer | 40 | $25,000 |
| Charles Kusekopf | Board Member, Director (Fo Trustee or director | 1 | $18,000 |
| Laura Triggs | Treasurer Trustee or director, Officer | 5 | $0 |
| Christina Warinner | Board Member Trustee or director | 1 | $0 |
| William Taylor | Board Member Trustee or director | 1 | $0 |
| Jonathan Dunnum | Board Member Trustee or director | 1 | $0 |
| Meredith Giordano | Treasurer Trustee or director, Officer | 5 | $0 |
| Michael Klecheski | Board Member Trustee or director | 1 | $0 |
| Paula Depriest | President, Vice President Trustee or director, Officer | 5 | $0 |
| Sondra Cuban | Board Member Trustee or director | 1 | $0 |
| Susan Higgins | Secretary Trustee or director, Officer | 1 | $0 |
| Vera Kuklina | Board Member Trustee or director | 1 | $0 |
| Bukhchuluun Dashzeveg | Board Member Trustee or director | 1 | $0 |
990 for the year ended September 30, 2024: 15 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Bolortsetseg Minjin | Executive Director (Former) Officer | 40 | $41,670 |
| Isaac Hart | Resident Director Officer | 40 | $30,000 |
| Maggie Lindrooth | US Director Officer | 40 | $22,000 |
| Charles Kusekopf | Board Member, Director (Former) Trustee or director | 3 | $18,000 |
| Caverlee Cary | Board Member Trustee or director | 1 | $0 |
| Christina Warinner | Board Member Trustee or director | 1 | $0 |
| Jonathan Dunnum | Board Member Trustee or director | 1 | $0 |
| Mark Greenberg | Board Member Trustee or director | 1 | $0 |
| Meredith Giordano | Treasurer Trustee or director, Officer | 1 | $0 |
| Michael Klecheski | Board Member Trustee or director | 1 | $0 |
| Paula Depriest | President, Vice President (Former) Trustee or director, Officer | 4 | $0 |
| Sondra Cuban | Board Member Trustee or director | 1 | $0 |
| Susan Higgins | Secretary Trustee or director, Officer | 1 | $0 |
| Vera Kuklina | Board Member Trustee or director | 1 | $0 |
| William Fitzhugh | Board Member Trustee or director | 1 | $0 |
990 for the year ended September 30, 2023: 26 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Bolor Minjin | Executive Director (Former) Officer | 24 | $54,004 |
| Charles Krusekopf | Associate Director Trustee or director, Officer | 10 | $18,000 |
| William Fitzhugh | President Trustee or director, Officer | 1 | $0 |
| Paula Depriest | Vice President Trustee or director, Officer | 1 | $0 |
| Meredith Giordano | Treasurer Trustee or director, Officer | 1 | $0 |
| Caverlee Cary | Secretary Trustee or director, Officer | 1 | $0 |
| Marrissa Smith | Board Member At-Large Trustee or director | 1 | $0 |
| Bryant Harden | Board Member At-Large Trustee or director | 1 | $0 |
| Mark Greenberg | Inst Rep West Wash Uni Trustee or director | 1 | $0 |
| Brian Baumann | Inst Rep UC Berkeley Trustee or director | 1 | $0 |
| William Taylor | Inst Rep Univ of Col Boulder Trustee or director | 1 | $0 |
| Timothy May | Inst Rep Uni of N Georgia Trustee or director | 1 | $0 |
| Christopher Atwood | Inst Rep Uni of Penn Trustee or director | 1 | $0 |
| Maria Fernandez-Gimenez | Inst Rep Colorado State Uni Trustee or director | 1 | $0 |
| Kathryn Graber | Inst Rep Indiana Uni Trustee or director | 1 | $0 |
| Holly Barcus | Inst Rep Macalester College Trustee or director | 1 | $0 |
| Clifford Montagne | Inst Rep Bio Regions Intl Trustee or director | 1 | $0 |
| John Williams | Inst Rep Principia College Trustee or director | 1 | $0 |
| Nancy Nix | Inst Rep Uni of Alaska Trustee or director | 1 | $0 |
| John Olsen | Inst Rep Uni of Arizona Trustee or director | 1 | $0 |
| Julian Dierkes | Inst Rep Uni of British Columbia Trustee or director | 1 | $0 |
| Alex Diener | Inst Rep Uni of Kansas Trustee or director | 1 | $0 |
| Scott Gardner | Inst Rep Uni of Nebraska Trustee or director | 1 | $0 |
| Bill Honeychurch | Inst Rep Yale University Trustee or director | 1 | $0 |
| Morris Rossabi | Inst Rep Columbia Univ Trustee or director | 1 | $0 |
| Olaf Jensen | Inst Rep Uni of Wisconsin Trustee or director | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 255 S 36TH ST RM 642, PHILADELPHIA, PA 19104-6305
- Principal officer (990 for 2024)
- Maggie Lindrooth, 255 S 36th St 642, Philadelphia, PA 19104
- Signed the 990
- Maggie Lindrooth, US Director
- Phone
- (250) 391-2600
- Website
- www.mongoliacenter.org
- Return prepared by
- WERSEN NONPROFIT CPAS LLC
Mission
The American Center for Mongolian Studies (ACMS) is an academic organization promoting scholarship and research about, and in, Mongolia. The organization provides support services to students and faculty conducting study or research in Mongolia at its full-service resource center and library in Mongolia. The Organization also conducts a variety of public outreach and educational activities, including lectures and language training.
Program accomplishments
- Speaker Series and Researchers -ACMS supported public scholarship and research through its Speaker Series and targeted fellowships. During the fiscal year, ACMS held 17 in-person and virtual lectures and roundtables in Ulaanbaatar and online, featuring Mongolian and international scholars and addressing topics including history, archaeology, law, public health, and environmental studies. ACMS awarded two Research Fellowships supporting doctoral and faculty research projects and collaborated with U.S. and Mongolian partners to host a virtual panel series on cross-border research collaboration.Expenses $13,215
- Resource Center and Library in Mongolia -ACMS maintained a fully staffed resource center and research library in Ulaanbaatar, providing access to a multilingual collection of more than 5,000 titles and research support to scholars and students from Mongolia and abroad. ACMS conducted library-related outreach and professional activities during the year, including World Book Day programming, librarian knowledge-sharing events, and the release of Mongolia's first Mongolian-language MARC 21 cataloging guideline. ACMS also supported major cultural heritage initiatives, including activities associated with a U.S. Ambassador-funded manuscript conservation project at the National Library of Mongolia.Expenses $14,946
- Language Program, Field Schools, and Study Tours -ACMS offered year-round Mongolian language instruction and an intensive summer language program and conducted three Mongolia Field School courses during summer 2025 focused on biodiversity conservation, archaeology, and community-based park management. The Field Schools welcomed 41 participants from eight countries and included fellowship support in the form of tuition discounts. ACMS also hosted multiple U.S. university and educator programs, providing immersive academic and cultural experiences through lectures, site visits, and engagement with local experts.Expenses $338,830 · grants $69,150 · revenue $186,340
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 September, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | September 30, 2026 | February 15, 2027 | Not due yet |
| 2024 | September 30, 2025 | February 16, 2026 | 990 on file |
| 2023 | September 30, 2024 | February 17, 2025 | 990 on file |
IRS record
- EIN
- 55-0799211
- 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
- 2003
- Accounting year ends
- September
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Social science (V21)
- Assets (IRS master file)
- $857,759
- Income (IRS master file)
- $468,688
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | September 2025 | $468,688 | $505,194 | $857,759 | XML |
| 990 | September 2024 | $349,252 | $416,960 | $874,183 | XML |
| 990 | September 2023 | $855,497 | $489,766 | $903,010 | XML |
| 990 | September 2022 | $315,909 | $405,906 | $543,009 | IRS |
| 990 | September 2021 | – | – | – | IRS |
| 990 | September 2020 | – | – | – | IRS |
| 990 | September 2019 | – | – | – | IRS |
| 990 | September 2018 | – | – | – | IRS |
990-N: the IRS bulk file holds only the latest e-Postcard per organization; earlier years come from archived copies of that file since 2020 and can have gaps (the IRS e-Postcard search lists every one). 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 (search EIN 55-0799211).
Questions about AMERICAN CENTER FOR MONGOLIAN STUDIES
- What is the EIN of AMERICAN CENTER FOR MONGOLIAN STUDIES?
- The employer identification number (EIN) of AMERICAN CENTER FOR MONGOLIAN STUDIES is 55-0799211.
- Is AMERICAN CENTER FOR MONGOLIAN STUDIES tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2003.
- Are donations to AMERICAN CENTER FOR MONGOLIAN STUDIES tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does AMERICAN CENTER FOR MONGOLIAN STUDIES 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 AMERICAN CENTER FOR MONGOLIAN STUDIES due?
- The return for tax year 2025 (the year ending September 30, 2026) is due February 15, 2027. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did AMERICAN CENTER FOR MONGOLIAN STUDIES last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended September 2025.
- Who is the principal officer of AMERICAN CENTER FOR MONGOLIAN STUDIES?
- The 990 for the year ended September 30, 2025 names Maggie Lindrooth.
- Who are the officers and directors of AMERICAN CENTER FOR MONGOLIAN STUDIES?
- The 990 for the year ended September 30, 2025 lists 13 people; 2 received compensation from the organization, the highest $25,000 (Maggie Lindrooth, US Director).
- How much revenue does AMERICAN CENTER FOR MONGOLIAN STUDIES have?
- On its 990 for the year ended September 30, 2025 it reported revenue of $468,688, expenses of $505,194 and total assets of $857,759 at year end.
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