Nonprofit · EIN 73-1644103
MOUNTAIN STUDIES INSTITUTE INC
Tax-exempt · DURANGO, CO 81303
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $1,620,859 | $1,776,122 | -$155,263 | $689,036 | $474,236 | $214,800 |
| December 31, 2024 | 990 | $1,795,784 | $1,723,549 | $72,235 | $744,621 | $388,471 | $356,150 |
| December 31, 2023 | 990 | $1,614,270 | $1,672,323 | -$58,053 | $781,981 | $498,066 | $283,915 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $1,029,716
- of which government grants
- $510,908
- Program service revenue
- $586,411
- Investment income
- $531
- Net gain from sales of assets
- -$23
- Other revenue
- $4,201
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $66,447
- Other salaries and wages
- $869,341
- Salaries, compensation and benefits (total)
- $1,086,288
- Professional fundraising fees
- $0
- Legal fees
- $63,277
- Accounting fees
- $10,456
- Occupancy
- $68,752
- Travel
- $21,898
- Depreciation
- $19,549
- Program services (functional)
- $1,411,582
- Management and general (functional)
- $351,070
- Fundraising (functional)
- $13,470
Balance sheet and other
- Total assets, start of year
- $744,621
- Total assets, end of year
- $689,036
- Total liabilities, end of year
- $474,236
- Net assets, end of year
- $214,800
- Land, buildings and equipment
- $59,500
- Net assets without donor restrictions
- $214,800
- Gross receipts
- $1,620,882
- Employees
- 30
- Volunteers
- 3,000
- Year formed
- 2002
- State of legal domicile
- CO
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 |
|---|---|---|---|
| MELISSA MAY | EXECUTIVE DIRECTOR Officer | 1 | $52,023 |
| ADREA C BOGLE | EXECUTIVE DIRECTOR Officer | 40 | $14,424 |
| DR WESLEY BERG | PRESIDENT Trustee or director, Officer | 4 | $0 |
| CAL JOYNER | VICE PRESIDENT Trustee or director, Officer | 3 | $0 |
| MICHELLE FURI | TREASURER Trustee or director, Officer | 3 | $0 |
| AARON KIMPLE | SECRETARY Trustee or director, Officer | 3 | $0 |
| ASA BJORKLUND | DIRECTOR Trustee or director | 3 | $0 |
| DEANNE GALLEGOS | DIRECTOR Trustee or director | 3 | $0 |
| MIRIAM GILLOW-WILES | DIRECTOR Trustee or director | 3 | $0 |
| BILL HESFORD | DIRECTOR Trustee or director | 3 | $0 |
| MARY BETH MILES | DIRECTOR Trustee or director | 3 | $0 |
990 for the year ended December 31, 2024: 9 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| DR WESLEY BERG | PRESIDENT Trustee or director, Officer | 2 | $0 |
| CAL JOYNER | VICE PRESIDENT Trustee or director, Officer | 1 | $0 |
| MICHELLE FURI | TREASURER Trustee or director, Officer | 1 | $0 |
| AARON KIMPLE | SECRETARY Trustee or director, Officer | 1 | $0 |
| ASA BJORKLUND | DIRECTOR Trustee or director | 1 | $0 |
| DEANNE GALLEGOS | DIRECTOR Trustee or director | 1 | $0 |
| MIRIAM GILLOW-WILES | DIRECTOR Trustee or director | 1 | $0 |
| BILL HESFORD | DIRECTOR Trustee or director | 1 | $0 |
| MARY BETH MILES | DIRECTOR Trustee or director | 1 | $0 |
990 for the year ended December 31, 2023: 8 people
| Name | Title | Hours / week | Compensation |
|---|---|---|---|
| DR TIM HAARMANN | DIRECTOR Trustee or director | 1 | $0 |
| MARK STILES | DIRECTOR Trustee or director | 1 | $0 |
| DR WESLEY BERG | DIRECTOR Trustee or director | 1 | $0 |
| AARON KIMPLE | DIRECTOR Trustee or director | 1 | $0 |
| ANITA RANCATTI | PRESIDENT Officer | 2 | $0 |
| CAL JOYNER | VICE PRESIDENT Officer | 1 | $0 |
| MARK GARCIA | TREASURER Officer | 1 | $0 |
| ELLEN ROBERTS JD | SECRETARY Officer | 1 | $0 |
Address and contacts
- Address (IRS master file)
- 162 STEWART ST UNIT A, DURANGO, CO 81303-8087
- Principal officer (990 for 2025)
- MARION MCKEON, 162 STEWART STREET UNIT A, DURANGO, CO 81303
- Signed the 990
- MARION MCKEON, EXECUTIVE DIRECTOR
- Phone
- (970) 387-5161
- Website
- WWW.MOUNTAINSTUDIES.ORG
- Return prepared by
- MBE CPAS LLP
Mission
TO EMPOWER COMMUNITIES, MANAGERS AND SCIENTISTS TO INNOVATE SOLUTIONS THROUGH MOUNTAIN RESEARCH, EDUCATION, AND PRACTICE.
Program accomplishments
- MOUNTAIN STUDIES INSTITUTE MOBILIZED NEARLY 3,000 VOLUNTEERS AND PROGRAM PARTICIPANTS IN COMMUNITY SCIENCE INITIATIVES IN 2025 TO COMPLEMENT THE WORK OF OUR RESEARCHERS IN MONITORING FOREST, WATER, AND WILDLIFE HEALTH. WITH STAFF SUPPORT AND AUNIQUELY DESIGNED SET OF PROTOCOLS, VOLUNTEERS GAVE THEIR TIME TO MONITOR BIGHORN, PIKA AND THE ENDANGERED PAGOSA SKYROCKETAS WELL AS SUPPORT WATER QUALITY TESTING. OUR TEAM OF SCIENTISTS WORKED ACROSS THE SAN JUAN MOUNTAIN REGION TO INCREASECOVERAGE OF SNOWPACK AND FOREST MONITORING, IMPLEMENT SNOW SMART FORESTRY INITIATIVES, ADVANCE LOW TECH ECOLOGICALRESTORATION IN KEY AREAS, AND HELP BUILD CAPACITY OF COMMUNITY BASED ORGANIZATIONS TO INTEGRATE SCIENCE INTO THEIR PLANNING ANDDECISION-MAKING. WE PARTNERED WITH FEDERAL, STATE, LOCAL AND TRIBAL GOVERNMENTS AS WELL AS PRIVATE FOUNDATIONS TO ADVANCEENVIRONMENTAL RESEARCH, MONITORING AND EDUCATION ACROSS THE COMMUNITIES OF THE SAN JUAN MOUNTAINS.Expenses $1,411,582 · revenue $591,143
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
- 73-1644103
- 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
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C30)
- Assets (IRS master file)
- $689,036
- Income (IRS master file)
- $1,620,882
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $1,620,859 | $1,776,122 | $689,036 | XML |
| 990 | December 2024 | $1,795,784 | $1,723,549 | $744,621 | IRS |
| 990 | December 2023 | $1,614,270 | $1,672,323 | $781,981 | XML |
| 990 | December 2022 | $1,380,013 | $1,542,608 | $759,455 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 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 73-1644103).
Questions about MOUNTAIN STUDIES INSTITUTE INC
- What is the EIN of MOUNTAIN STUDIES INSTITUTE INC?
- The employer identification number (EIN) of MOUNTAIN STUDIES INSTITUTE INC is 73-1644103.
- Is MOUNTAIN STUDIES INSTITUTE INC tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 2003.
- Are donations to MOUNTAIN STUDIES INSTITUTE INC tax-deductible?
- Yes. It is listed in IRS Publication 78 (Public charity, 50% deduction limit).
- Which annual return does MOUNTAIN STUDIES INSTITUTE 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 MOUNTAIN STUDIES INSTITUTE 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 MOUNTAIN STUDIES INSTITUTE INC 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 MOUNTAIN STUDIES INSTITUTE INC?
- The 990 for the year ended December 31, 2025 names MARION MCKEON.
- Who are the officers and directors of MOUNTAIN STUDIES INSTITUTE INC?
- The 990 for the year ended December 31, 2025 lists 11 people; 2 received compensation from the organization, the highest $52,023 (MELISSA MAY, EXECUTIVE DIRECTOR).
- How much revenue does MOUNTAIN STUDIES INSTITUTE INC have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $1,620,859, expenses of $1,776,122 and total assets of $689,036 at year end.
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