Nonprofit · EIN 13-1659623
GEOLOGICAL SOCIETY OF AMERICA INC
Tax-exempt · BOULDER, CO 80301
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| June 30, 2025 | 990 | $14,634,212 | $13,745,675 | $888,537 | $57,232,505 | $2,650,202 | $54,582,303 |
| June 30, 2024 | 990 | $12,842,050 | $12,729,061 | $112,989 | $53,783,635 | $3,318,119 | $50,465,516 |
| June 30, 2023 | 990 | $10,703,091 | $10,676,170 | $26,921 | $50,072,117 | $3,024,128 | $47,047,989 |
Financial details: 990 for the year ended June 30, 2025
Revenue
- Contributions, gifts and grants
- $2,961,782
- of which government grants
- $990,473
- Program service revenue
- $4,173,389
- Investment income
- $3,061,629
- Net gain from sales of assets
- $1,983,371
- Net income from sales of inventory
- $4,176,304
- Other revenue
- $4,437,412
Expenses
- Grants and similar amounts paid
- $1,566,146
- Compensation of officers, directors and key employees
- $620,813
- Other salaries and wages
- $3,858,878
- Salaries, compensation and benefits (total)
- $5,500,653
- Professional fundraising fees
- $0
- Legal fees
- $158,833
- Accounting fees
- $86,608
- Occupancy
- $449,268
- Travel
- $612,605
- Depreciation
- $43,434
- Program services (functional)
- $10,621,046
- Management and general (functional)
- $3,124,629
Balance sheet and other
- Total assets, start of year
- $53,783,635
- Total assets, end of year
- $57,232,505
- Total liabilities, end of year
- $2,650,202
- Net assets, end of year
- $54,582,303
- Land, buildings and equipment
- $139,490
- Publicly traded securities
- $38,197,595
- Net assets without donor restrictions
- $39,934,172
- Net assets with donor restrictions
- $14,648,131
- Gross unrelated business income
- $116,967
- Gross receipts
- $21,253,671
- Employees
- 62
- Volunteers
- 1,130
- Year formed
- 1888
- State of legal domicile
- NY
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 June 30, 2025, highest compensation first.
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MELANIE BRANDT | EXECUTIVE DIRECTOR AND CEO Officer | 40 | $340,797 | $47,044 |
| ANITA MONK-RYAN | DIRECTOR OF FINANCE Highest-paid employee | 40 | $146,628 | $36,949 |
| BRIDGETTE MOORE | COO Officer | 40 | $155,397 | $26,124 |
| TODD BERGGREN | FORMER SENIOR DIRECTOR OF IT Former | 40 | $137,244 | $19,141 |
| MARK PIGG | FORMER BUSINESS SYSTEMS ADMINISTR Former | 40 | $135,009 | $20,148 |
| AIDA SZTEIN FABER | DIRECTOR OF INTERNATIONAL PROGRAMS Highest-paid employee | 40 | $147,837 | $0 |
| JENNIFER NOCERINO | FORMER DIRECTOR OF STRATEGIC OUTREACH Former | 40 | $117,717 | $0 |
| JASON ELKINS | DIRECTOR OF MARKETING Highest-paid employee | 40 | $102,356 | $7,533 |
| NATHAN NIEMI | PRESIDENT Trustee or director, Officer | 3 | $0 | $0 |
| GLENN THACKRAY | PRESIDENT-ELECT Trustee or director, Officer | 3 | $0 | $0 |
| CHRISTOPHER BAILEY | PAST PRESIDENT Trustee or director, Officer | 3 | $0 | $0 |
| BRIAN KATZ | TREASURER Trustee or director, Officer | 3 | $0 | $0 |
| MADISON RAFTER | SAC CHAIR Trustee or director, Officer | 3 | $0 | $0 |
| MATTHEW DORSEY | SAC IMMEDIATE PAST CHAIR Trustee or director, Officer | 3 | $0 | $0 |
| NICHOLAS LANG | COUNCILOR - DIVISION LIAISON Trustee or director | 3 | $0 | $0 |
11 more people on this return
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| KATHLEEN SURPLESS | COUNCILOR - SECTION LIAISON Trustee or director | 3 | $0 |
| MARTHA EPPES | COUNCILOR Trustee or director | 3 | $0 |
| CAROL FROST | COUNCILOR Trustee or director | 3 | $0 |
| JAMES HORTON | COUNCILOR Trustee or director | 3 | $0 |
| JEAN HSIEH | COUNCILOR Trustee or director | 3 | $0 |
| CRAIG JONES | COUNCILOR Trustee or director | 3 | $0 |
| DONNA JURDY | COUNCILOR Trustee or director | 3 | $0 |
| ERIC KIRBY | COUNCILOR Trustee or director | 3 | $0 |
| RICHARD ORTIZ | COUNCILOR Trustee or director | 3 | $0 |
| PATRICIA PERSAUD | COUNCILOR Trustee or director | 3 | $0 |
| DARRYL REANO | COUNCILOR Trustee or director | 3 | $0 |
990 for the year ended June 30, 2024: 21 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| MELANIE BRANDT | EX OFFICIO, NON-VOTING SEC Officer | 40 | $311,723 | $17,734 |
| ANITA MONK-RYAN | DIRECTOR OF FINANCE Highest-paid employee | 40 | $138,525 | $18,401 |
| TODD BERGGREN | SENIOR DIRECTOR OF IT Highest-paid employee | 40 | $134,625 | $18,401 |
| MARK PIGG | BUSINESS SYSTEMS ADMINISTRATOR Highest-paid employee | 40 | $124,363 | $19,063 |
| REBECCA FAZZARI | DIRECTOR OF MEETINGS AND EVENTS Highest-paid employee | 40 | $127,195 | $14,549 |
| KATHERINE WHITE | DIRECTOR FOR GEOSCIENCE PO Highest-paid employee | 40 | $117,914 | $0 |
| DR CHRISTOPHER M BAILEY | PRESIDENT Trustee or director, Officer | 3 | $0 | $0 |
| DR CARMALA N GARZIONE | PRESIDENT-ELECT Trustee or director, Officer | 3 | $0 | $0 |
| DR MARK GABRIEL LITTLE | PAST PRESIDENT Trustee or director, Officer | 3 | $0 | $0 |
| PROF CAROL DENISON FROST | COUNCILOR Trustee or director | 3 | $0 | $0 |
| DR J WRIGHT HORTON JR | COUNCILOR Trustee or director | 3 | $0 | $0 |
| JEAN C HSIEH | COUNCILOR Trustee or director | 3 | $0 | $0 |
| DR CRAIG H JONES | COUNCILOR Trustee or director | 3 | $0 | $0 |
| DONNA M JURDY | COUNCILOR Trustee or director | 3 | $0 | $0 |
| NICHOLAS PATRICK LANG | COUNCILOR- DIVISION LIAISON Trustee or director | 3 | $0 | $0 |
| ABHIJIT MUKHERJEE | COUNCILOR Trustee or director | 3 | $0 | $0 |
| RICHARD M ORTIZ | COUNCILOR Trustee or director | 3 | $0 | $0 |
| PATRICIA PERSAUD | COUNCILOR Trustee or director | 3 | $0 | $0 |
| DR MADELINE E SCHREIBER | COUNCILOR Trustee or director | 3 | $0 | $0 |
| SUSAN STOVER PG GSA | COUNCILOR Trustee or director | 3 | $0 | $0 |
| DR KATHLEEN DEGRAAFF SURPLESS | COUNCILOR Trustee or director | 3 | $0 | $0 |
990 for the year ended June 30, 2023: 24 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| VICKI MCCONNELL | EX OFFICIO, NON-VOTING SEC Officer | 40 | $258,443 | $4,186 |
| ANITA MONK-RYAN | DIRECTOR OF FINANCE Highest-paid employee | 40 | $131,496 | $15,228 |
| TODD BERGGREN | SENIOR DIRECTOR OF IT Highest-paid employee | 40 | $134,437 | $9,873 |
| KATHERINE WHITE | DIRECTOR FOR GEOSCIENCE PO Highest-paid employee | 40 | $142,246 | $0 |
| PATRICIA KILNER | DIRECTOR OF MEMBERSHIP DEVELOPMENT AND SERVICES Highest-paid employee | 40 | $121,938 | $8,811 |
| MARK PIGG | BUSINESS SYSTEMS ADMINISTRATOR Highest-paid employee | 40 | $121,599 | $8,580 |
| MELANIE BRANDT | EX OFFICIO, NON-VOTING SEC Officer | 40 | $52,108 | $2,285 |
| MARK LITTLE | PRESIDENT Trustee or director, Officer | 3 | $0 | $0 |
| CHRISTOPHER BAILEY | PRESIDENT-ELECT Trustee or director, Officer | 3 | $0 | $0 |
| BARBARA DUTROW | PAST PRESIDENT Trustee or director, Officer | 3 | $0 | $0 |
| BRIAN KATZ | TREASURER Trustee or director, Officer | 3 | $0 | $0 |
| MARGARET EGGERS | COUNCILOR Trustee or director | 3 | $0 | $0 |
| JAMES HORTON | COUNCILOR Trustee or director | 3 | $0 | $0 |
| DONNA JURDY | COUNCILOR Trustee or director | 3 | $0 | $0 |
| MADELINE SCHREIBER | COUNCILOR Trustee or director | 3 | $0 | $0 |
| JEAN HSIEH | COUNCILOR Trustee or director | 3 | $0 | $0 |
| GLENN THACKRAY | COUNCILOR - DIVISION LIAISON Trustee or director | 3 | $0 | $0 |
| KATHLEEN SURPLESS | COUNCILOR Trustee or director | 3 | $0 | $0 |
| KATHARINE HUNTINGTON | COUNCILOR Trustee or director | 3 | $0 | $0 |
| ABHIJIT MUKHERJEE | COUNCILOR Trustee or director | 3 | $0 | $0 |
| RICHARD ORTIZ | COUNCILOR Trustee or director | 3 | $0 | $0 |
| CAROL FROST | COUNCILOR Trustee or director | 3 | $0 | $0 |
| SUSAN STOVER | COUNCILOR Trustee or director | 3 | $0 | $0 |
| YUEYI CHE | STUDENT REPRESENTATIVE Trustee or director | 3 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 3300 PENROSE PL, BOULDER, CO 80301-1806
- Principal officer (990 for 2024)
- NATHAN NIEMI, PO BOX 9140, BOULDER, CO 80301
- Signed the 990
- BRIDGETTE MOORE, INTERIM CEO
- Phone
- (303) 357-1019
- Website
- WWW.GEOSOCIETY.ORG
- Return prepared by
- BROCK AND COMPANY CPAS PC
Mission
THE GEOLOGICAL SOCIETY OF AMERICA WAS FOUNDED TO ADVANCE THE SCIENCE OF GEOLOGY, ENHANCE THE PROFESSIONAL GROWTH OF ITS MEMBERS AND TO PROMOTE THE GEOSCIENCES IN THE SERVICE OF HUMANKIND AND STEWARDSHIP OF THE EARTH.
Program accomplishments
- THE ORGANIZATION SPONSORS AN ANNUAL MEETING FOR ITS MEMBERS IN THE FALL. SMALLER MEETINGS ARE HELD IN THE SPRING. MEMBERS ATTEND TO MEET WITH DIVISION, SECTION AND ASSOCIATED SOCIETY MEMBERS. THEY ATTEND FIELD TRIPS, TECHNICAL SESSIONS, SHORT COURSES AND CONFERENCES CONCERNING TOPICS IN THE FIELD OF GEOLOGY.Expenses $2,613,915 · revenue $2,357,628
- EDUCATION, OUTREACH AND GRANTS - INVOLVEMENT IN HEIGHTENING PUBLIC UNDERSTANDING OF AND APPRECIATION FOR GEOSCIENCES BY WORKING WITH SCIENTISTS, TEACHERS, STUDENTS AND THE GENERAL PUBLIC. THERE ARE ALSO PROGRAMS AND SHORT COURSES RUN BY SECTIONS AND DIVISIONS. THE ORGANIZATION GRANTS FUNDS FOR RESEARCH AND TRAVEL TO UNDERGRADUATE, GRADUATE, AND POST-DOC STUDENTS AND SUPPORTS A NUMBER OF AWARDS AND MEDALS TO RECOGNIZE EXCELLENCE.Expenses $3,810,861 · grants $1,566,146 · revenue $618,352
- THE MEMBERSHIP SERVICES PROGRAM INCLUDES THE COST OF MAINTAINING THE SOCIETY'S MEMBERSHIP FOR THE BENEFIT OF ITS MEMBERS AND TO ADVANCE THEIR PROFESSIONALISM, RESEARCH, AND CAREERS. THERE ARE APPROXIMATELY 16,000 MEMBERS ANNUALLY.Expenses $486,650 · revenue $627,442
- OTHER PROGRAM SERVICES INCLUDE: PUBLISHING AND DISTRIBUTING SCIENTIFIC LITERATURE,PROVIDING INFORMATION AND MATERIALS FOR PRIMARY LEVEL SCIENCE EDUCATION AND FURNISHING INFORMATION TO THE PUBLIC ABOUT EARTH SCIENCE EDUCATION AND THE ENVIRONMENT. OTHER PROGRAMS INCLUDE PROGRAMS SPONSORED BY MEMBERS IN SPECIFIC GEOGRAPHICAL LOCATIONS AND SCIENCES.Expenses $3,709,620 · revenue $4,893,937
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 June, so each return is due on the 15th day of the 5th month after that.
| Tax year | Year ended | Due | IRS public records |
|---|---|---|---|
| 2025 | June 30, 2026 | November 16, 2026 | Not due yet |
| 2024 | June 30, 2025 | November 17, 2025 | 990 on file |
| 2023 | June 30, 2024 | November 15, 2024 | 990 on file |
IRS record
- EIN
- 13-1659623
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Public charity, 50% deduction limit
- Exempt since
- 1932
- Accounting year ends
- June
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Science and technology (U03)
- Assets (IRS master file)
- $57,232,505
- Income (IRS master file)
- $21,253,671
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | June 2025 | $14,634,212 | $13,745,675 | $57,232,505 | IRS |
| 990 | June 2024 | $12,842,050 | $12,729,061 | $53,783,635 | IRS |
| 990-T | June 2024 | – | – | – | IRS |
| 990 | June 2023 | $10,703,091 | $10,676,170 | $50,072,117 | XML |
| 990-T | June 2023 | – | – | – | IRS |
| 990 | June 2022 | $16,971,605 | $8,959,160 | $47,858,291 | IRS |
| 990-T | June 2022 | – | – | – | IRS |
| 990 | June 2021 | – | – | – | IRS |
| 990-T | June 2021 | – | – | – | IRS |
| 990 | June 2020 | – | – | – | IRS |
| 990 | June 2019 | – | – | – | IRS |
| 990 | June 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 13-1659623).
Questions about GEOLOGICAL SOCIETY OF AMERICA INC
- What is the EIN of GEOLOGICAL SOCIETY OF AMERICA INC?
- The employer identification number (EIN) of GEOLOGICAL SOCIETY OF AMERICA INC is 13-1659623.
- Is GEOLOGICAL SOCIETY OF AMERICA INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1932.
- Are donations to GEOLOGICAL SOCIETY OF AMERICA INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does GEOLOGICAL SOCIETY OF AMERICA 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 GEOLOGICAL SOCIETY OF AMERICA INC due?
- The return for tax year 2025 (the year ending June 30, 2026) is due November 16, 2026. Form 8868 extends it by six months; the 990-N cannot be extended.
- When did GEOLOGICAL SOCIETY OF AMERICA INC last file with the IRS?
- The latest return in the IRS public files is the 990 for the year ended June 2025.
- Who is the principal officer of GEOLOGICAL SOCIETY OF AMERICA INC?
- The 990 for the year ended June 30, 2025 names NATHAN NIEMI.
- Who are the officers and directors of GEOLOGICAL SOCIETY OF AMERICA INC?
- The 990 for the year ended June 30, 2025 lists 26 people; 8 received compensation from the organization, the highest $340,797 (MELANIE BRANDT, EXECUTIVE DIRECTOR AND CEO).
- How much revenue does GEOLOGICAL SOCIETY OF AMERICA INC have?
- On its 990 for the year ended June 30, 2025 it reported revenue of $14,634,212, expenses of $13,745,675 and total assets of $57,232,505 at year end.
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