Nonprofit · EIN 02-6007881
SPHINX FOUNDATION
Tax-exempt · HANOVER, NH 03755
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $795,714 | $266,158 | $529,556 | $7,279,426 | $0 | $7,279,426 |
| December 31, 2024 | 990 | $1,809,020 | $282,818 | $1,526,202 | $6,115,164 | $0 | $6,115,164 |
| December 31, 2023 | 990 | $718,414 | $189,494 | $528,920 | $5,087,311 | $0 | $5,087,311 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $478,630
- Program service revenue
- $102,739
- Investment income
- $214,345
- Net gain from sales of assets
- $25,197
- Other revenue
- $0
Expenses
- Grants and similar amounts paid
- $83,000
- Salaries, compensation and benefits (total)
- $0
- Professional fundraising fees
- $0
- Accounting fees
- $12,702
- Occupancy
- $44,509
- Travel
- $345
- Depreciation
- $25,018
- Program services (functional)
- $202,678
- Management and general (functional)
- $61,250
- Fundraising (functional)
- $2,230
Balance sheet and other
- Total assets, start of year
- $6,115,164
- Total assets, end of year
- $7,279,426
- Total liabilities, end of year
- $0
- Net assets, end of year
- $7,279,426
- Land, buildings and equipment
- $552,128
- Publicly traded securities
- $6,420,256
- Net assets without donor restrictions
- $6,279,426
- Net assets with donor restrictions
- $1,000,000
- Gross receipts
- $1,422,352
- Employees
- 0
- Volunteers
- 111
- Year formed
- 2006
- State of legal domicile
- NH
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 December 31, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| THOMAS D SLOSBERG | PRESIDENT Trustee or director, Officer | 1 | $0 |
| PETER FREDERICK | PRESIDENT EMERITUS Trustee or director, Officer | 1 | $0 |
| KWAME OHENE-ADU | SECRETARY Trustee or director, Officer | 1 | $0 |
| JOSEPH F DEMPSEY JR | TREASURER Trustee or director, Officer | 1 | $0 |
| GEORGE L FAUX | VICE PRESIDENT Trustee or director, Officer | 1 | $0 |
| DAVID A HARRISON | VICE PRESIDENT UNTIL 11/2025 Trustee or director, Officer | 1 | $0 |
| JAMES WENDELL BEANE III | BOARD MEMBER Trustee or director | 1 | $0 |
| PAUL CENTENARI | BOARD MEMBER Trustee or director | 1 | $0 |
| ROBERT T ESPOSITO | BOARD MEMBER Trustee or director | 1 | $0 |
| WILSON HANDLER | BOARD MEMBER Trustee or director | 1 | $0 |
| STEVE LINDE | BOARD MEMBER Trustee or director | 1 | $0 |
| SCOTT MACKLE | BOARD MEMBER Trustee or director | 1 | $0 |
| JON MERRIMAN | BOARD MEMBER Trustee or director | 1 | $0 |
| MATT NICHOLSON | BOARD MEMBER Trustee or director | 1 | $0 |
| JAMES PARKER | BOARD MEMBER Trustee or director | 1 | $0 |
2 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| CHAD E SILVERMAN | BOARD MEMBER Trustee or director | 1 | $0 |
| IAN SISTARE | BOARD MEMBER AS OF 12/2025 Trustee or director | 1 | $0 |
990 for the year ended December 31, 2024: 18 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| Peter Frederick | President Emeritus Trustee or director, Officer | 1 | $0 |
| Kwame Ohene-Adu | Secretary Trustee or director, Officer | 1 | $0 |
| James Wendell Beane III | Board Member Trustee or director | 1 | $0 |
| Paul Centenari | Board Member Trustee or director | 1 | $0 |
| Joseph F Dempsey Jr | Treasurer Trustee or director, Officer | 1 | $0 |
| Robert T Esposito | Board Member Trustee or director | 1 | $0 |
| Wilson Handler | Board Member Trustee or director | 1 | $0 |
| Neil Harrington | Board Member(through 12/2024) Trustee or director | 1 | $0 |
| David Harrison | Vice President Trustee or director, Officer | 1 | $0 |
| Steve Linde | Board Member Trustee or director | 1 | $0 |
| Jaan Lumi through 122024 | Board Member Trustee or director | 1 | $0 |
| Scott Mackle | Board Member Trustee or director | 1 | $0 |
| Jon Merriman | Board Member Trustee or director | 1 | $0 |
| Matt Nicholson | Board Member Trustee or director | 1 | $0 |
| James Parker | Board Member Trustee or director | 1 | $0 |
| Chad Silverman | Board Member Trustee or director | 1 | $0 |
| Tom Slosberg | President Trustee or director, Officer | 1 | $0 |
| George Faux | Vice President Trustee or director, Officer | 1 | $0 |
990 for the year ended December 31, 2023: 19 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| David Harrison | Board Member Trustee or director | 1 | $0 |
| Peter Frederick | President Emeritus Trustee or director, Officer | 1 | $0 |
| Neil Harrington | Board Member Trustee or director | 1 | $0 |
| Chad Silverman | Board Member Trustee or director | 1 | $0 |
| Jon Merriman | Board Member Trustee or director | 1 | $0 |
| Tom Slosberg | President Trustee or director, Officer | 1 | $0 |
| Robert T Esposito | Board Member Trustee or director | 1 | $0 |
| Steve Cordy | Treasurer (Through 07/2023) Trustee or director | 1 | $0 |
| Wilson Handler | Board member Trustee or director | 1 | $0 |
| Kwame Ohene-Adu | SECRETARY Trustee or director, Officer | 1 | $0 |
| James Wendell Beane III | Board Member Trustee or director | 1 | $0 |
| Paul Centenari | Board Member Trustee or director | 1 | $0 |
| Joseph F Dempsey Jr | Treasurer Trustee or director, Officer | 1 | $0 |
| Steve Linde | Board Member Trustee or director | 1 | $0 |
| Jaan Lumi | Board Member Trustee or director | 1 | $0 |
| Scott Mackle | Board Member Trustee or director | 1 | $0 |
| Matt Nicholson | Board Member Trustee or director | 1 | $0 |
| James Parker | Board Member Trustee or director | 1 | $0 |
| George Faux | Vice President (From 04/2023) Trustee or director, Officer | 1 | $0 |
Address and contacts
- Address (IRS master file)
- PO BOX 213, HANOVER, NH 03755-0213
- In care of
- % JOSEPH F DEMPSEY JR
- Principal officer (990 for 2025)
- THOMAS D SLOSBERG, PO BOX 213, HANOVER, NH 037550213
- Signed the 990
- THOMAS D SLOSBERG, PRESIDENT
- Phone
- (603) 443-7270
- Return prepared by
- CLIFTONLARSONALLEN LLP
Mission
SEE SCHEDULE OSPHINX FOUNDATION (THE FOUNDATION) PROMOTES CERTAIN EDUCATIONAL AND CHARITABLE PURPOSES WITHIN THE MEANING OF SECTION 501(C)(3) OF THE INTERNAL REVENUE CODE OF 1986, AS AMENDED (THE CODE). MORE SPECIFICALLY, THE PURPOSES FOR WHICH THE CORPORATION IS FORMED INCLUDE:
Program accomplishments
- A) EDUCATION: THE FOUNDATION CONDUCTS FORMAL ANNUAL COURSES ON DARTMOUTH AND SPHINX HISTORY AND TRADITIONS FOR INCOMING UNDERGRADUATE MEMBERS. THE COURSES ARE NORMALLY CONDUCTED IN THE SPHINX BUILDING AND OVERSEEN BY ALUMNI MEMBERS. THEY COMBINE LECTURES, ORAL REVIEW SESSIONS WITH READING ASSIGNMENTS. THERE ARE NORMALLY THREE SESSIONS PER ACADEMIC QUARTER (EXCLUDING SUMMER) AND INCLUDE GUEST LECTURES. UNDERGRADUATE MEMBERS TYPICALLY MAKE EXTENSIVE USE OF THE SPHINX FACILITIES WHICH INCLUDE THE LIBRARY AND STUDY STATIONS. THE FOUNDATION MAINTAINS THE BUILDING'S WIRELESS AND HIGH-SPEED CONNECTIVITY TO ENSURE THE SPHINX BUILDING PROVIDES THE STRONGEST SUPPORT FOR UNDERGRADUATE ACADEMIC ACTIVITIES. THESE FACILITIES WERE USED EXTENSIVELY TO PROVIDE VIRTUAL GATHERINGS (ZOOM), AS WELL AS TRADITIONAL EDUCATIONAL ACTIVITIES. GENERAL ACTIVITIES OF UNDERGRADUATE MEMBERSHIP IN SPHINX INCLUDE EXTENSIVE PEER DRIVEN LEARNING EXPERIENCES THAT TAKE PLACE IN THE SPHINX BUILDING. THESE INCLUDE INFORMAL ACADEMIC DEBATE AND DISCOURSE, FULFILLMENT OF GROUP LEADERSHIP ROLE, GROUP GOAL SETTING AND PLANNED ACTIVITIES, BASIC BUDGET MANAGEMENT, AND INTERACTION WITH COLLEGE OFFICIALS. THE SPHINX FOUNDATION ORGANIZES AND SUPPORTS PUBLIC LECTURES AND PARTNERS WITH THE COLLEGE'S CONTINUING ALUMNI EDUCATION PROGRAMS WHEN REQUESTED AND APPROPRIATE. THE FOUNDATION SUPPORTED THE HILL WINDS PROGRAM, A DIVERSE GROUP OF UNDERGRADUATES SELECTED TO BE 'AMBASSADORS' TO THE VISITING ALUMNI BODY. THE HILL WINDS SOCIETY WAS FOUNDED IN 2008 AND CONSISTS OF MEMBERS SELECTED ON THE BASIS OF CAMPUS INVOLVEMENT, COMMUNICATION SKILLS, LEADERSHIP POTENTIAL AND AN INFECTIOUS DARTMOUTH SPIRIT. IN 2024, WORKING WITH THE COLLEGE AND TEEVENS CENTER, THE FOUNDATION ESTABLISHED THE SPHINX INTERNSHIP FUND FOR STUDENT ATHLETES WITH A CONTRIBUTION OF $100,000.Expenses $67,262 · revenue $34,096
- B) COMMUNITY SERVICE: SINCE 2017, WHEN THE FOUNDATION INITIATED AND SPONSORED A RESEARCH FELLOWSHIP IN THE COLLEGE'S GOVERNMENT DEPARTMENT FOCUSING ON THE POLITICS AND LAW PROGRAM, THE FOUNDATION HAS FUNDED FELLOWSHIPS EACH YEAR. THE PROGRAM IN POLITICS AND LAW PROVIDES OPPORTUNITIES AND RESOURCES FOR DARTMOUTH STUDENTS TO CONDUCT RESEARCHIN POLITICS AND LAW, ESPECIALLY SOCIAL SCIENCE PERSPECTIVES ON LAW AND LAWMAKING. THE PROGRAM FUNDS STUDENT FELLOWSHIPS TO SUPPORT RESEARCH CONDUCTED OUTSIDE OF CLASS; RESEARCH EXPENSES, SUCH AS SURVEYS, EXPERIMENTS, PURCHASING DATA, INTERVIEWS; CONFERENCE EXPENSES FOR STUDENTS TO ATTEND ACADEMIC CONFERENCES TO PRESENT THEIR WORK AND FUNDS FOR GUEST SPEAKERS TO TRAVEL TO DARTMOUTH, SPEAK TO CLASSES, AND MEET WITH STUDENTS. THE FOUNDATION ALSO SUPPORTS THE HISTORICAL ACCOUNTABILITY STUDENT RESEARCH PROGRAM AT THE RAUNER SPECIAL COLLECTIONS LIBRARY AT DARTMOUTH'S BAKER LIBRARY. THE PROGRAM OFFERS SEVERAL STUDENT RESEARCH OPPORTUNITIES TO ASSIST DARTMOUTH STUDENTS IN EXPLORING RAUNER'S COLLECTIONS AND CREATING ORIGINAL CONTENT BASED UPON PRIMARY SOURCES. THE DYNAMIC PROGRAM OFFERS AN OPEN-ENDED SCOPE FOR PROJECT TOPICS AND IS DEDICATED TO ALLOWING UNDERGRADUATES THE OPPORTUNITY RESEARCH ISSUES OF DIVERSITY AND INCLUSION IN DARTMOUTH'S HISTORY. THIS PROGRAM MOST CLOSELY FULFILLS THE FOUNDATION'S COMMITMENT TO FURTHER KNOWLEDGE OF THE HISTORY AND TRADITIONS OF DARTMOUTH. IN ADDITION, SINCE 2015, THE FOUNDATION HAS UNDER WRITTEN THE OPERATION OF A STUDENT AND VISITOR INFORMATION BOOTH ON CAMPUS. FOUNDATION MEMBERS AND COMMUNITY VOLUNTEERS PROVIDED INFORMATION ABOUT DARTMOUTH AND THE GREATER DARTMOUTH COMMUNITY TO OVER 2,300 VISTORS FROM THE US AND 45 COUNTRIES IN 2025.Expenses $109,208 · grants $83,000 · revenue $55,358
- C) HISTORICAL PRESERVATION: THE SPHINX BUILDING, ORIGINALLY CONSTRUCTED IN 1905, IS LISTED ON THE NATIONAL REGISTER OF HISTORIC PLACES. IT IS THE ONLY BUILDING SO LISTED ON THE DARTMOUTH CAMPUS. THE STRUCTURE IS THE OLDEST POURED CONRETE BUILDING IN THE UNITED STATES. THE FOUNDATION IS COMMITTED TO ENSURING THAT THE BUILDING CONTINUES TO QUALIFY FOR INCLUSION ON THE NATIONAL REGISTER OF HISTORIC PLACES AND MAINTAINS ITS PLACE IN AMERICAN HISTORY. THE FOUNDATION IS COMMITTED TO PRESERVING THE BUILDING AND ITS ROLE IN SUPPORTING THE EDUCATIONAL AND COMMUNITY SERVICE ACTIVITIES OF ITS MEMBERS. THE BUILDING ALSO SERVES AS THE DEPOSITORY OF THE SPHINX FOUNDATION'S HISTORIC DOCUMENTS AND ARTIFACTS.Expenses $26,208 · revenue $13,285
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 year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | December 31, 2025 | May 15, 2026 | 990 on file |
| 2024 | December 31, 2024 | May 15, 2025 | 990 on file |
| 2023 | December 31, 2023 | May 15, 2024 | 990 on file |
IRS record
- EIN
- 02-6007881
- 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
- 2007
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Arts, culture and humanities (A800)
- Assets (IRS master file)
- $7,279,426
- Income (IRS master file)
- $1,422,352
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $795,714 | $266,158 | $7,279,426 | IRS |
| 990 | December 2024 | $1,809,020 | $282,818 | $6,115,164 | XML |
| 990 | December 2023 | $718,414 | $189,494 | $5,087,311 | XML |
| 990 | December 2022 | $459,364 | $160,400 | $4,355,384 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | 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 02-6007881).
Questions about SPHINX FOUNDATION
- What is the EIN of SPHINX FOUNDATION?
- The employer identification number (EIN) of SPHINX FOUNDATION is 02-6007881.
- Is SPHINX FOUNDATION tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2007.
- Are donations to SPHINX FOUNDATION tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does SPHINX FOUNDATION 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 SPHINX FOUNDATION 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 SPHINX FOUNDATION last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended December 2025.
- Who is the principal officer of SPHINX FOUNDATION?
- The 990 for the year ended December 31, 2025 names THOMAS D SLOSBERG.
- Who are the officers and directors of SPHINX FOUNDATION?
- The 990 for the year ended December 31, 2025 lists 17 people; 0 received compensation from the organization.
- How much revenue does SPHINX FOUNDATION have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $795,714, expenses of $266,158 and total assets of $7,279,426 at year end.
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