Nonprofit · EIN 38-1686621
MICHIGAN AUDUBON SOCIETY
Tax-exempt · OKEMOS, MI 48864
Financials
| Year ended | Form | Revenue | Expenses | Net income | Total assets | Liabilities | Net assets |
|---|---|---|---|---|---|---|---|
| December 31, 2025 | 990 | $1,171,063 | $1,133,728 | $37,335 | $7,049,028 | $76,331 | $6,972,697 |
| December 31, 2024 | 990 | $1,768,355 | $1,027,404 | $740,951 | $6,780,191 | $77,714 | $6,702,477 |
| December 31, 2023 | 990 | $594,285 | $740,767 | -$146,482 | $5,895,939 | $78,874 | $5,817,065 |
Financial details: 990 for the year ended December 31, 2025
Revenue
- Contributions, gifts and grants
- $886,286
- of which government grants
- $14,000
- Membership dues
- $88,257
- Program service revenue
- $47,817
- Investment income
- $227,943
- Net rental income
- $4,550
- Net gain from sales of assets
- $27,363
- Net income from sales of inventory
- $873
- Other revenue
- $9,017
Expenses
- Grants and similar amounts paid
- $0
- Compensation of officers, directors and key employees
- $161,413
- Other salaries and wages
- $399,641
- Salaries, compensation and benefits (total)
- $651,527
- Professional fundraising fees
- $0
- Legal fees
- $103,737
- Occupancy
- $26,233
- Travel
- $26,964
- Depreciation
- $24,289
- Program services (functional)
- $689,945
- Management and general (functional)
- $340,771
- Fundraising (functional)
- $103,012
Balance sheet and other
- Total assets, start of year
- $6,780,191
- Total assets, end of year
- $7,049,028
- Total liabilities, end of year
- $76,331
- Net assets, end of year
- $6,972,697
- Land, buildings and equipment
- $2,877,832
- Publicly traded securities
- $3,508,289
- Net assets without donor restrictions
- $6,972,697
- Gross receipts
- $1,459,525
- Employees
- 15
- Volunteers
- 80
- Year formed
- 1905
- State of legal domicile
- MI
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 | Other / benefits |
|---|---|---|---|---|
| KATHLEEN MENNILLO | EXECUTIVE DIRECTOR Trustee or director | 40 | $156,616 | $4,797 |
| NATASHA KOSS MS | VICE CHAIR Trustee or director, Officer | 0.5 | $0 | $0 |
| SAMUEL BURCKHARDT | SECRETARY Trustee or director, Officer | 0.5 | $0 | $0 |
| BILL VOLZ JD MBA MA | TREASURER Trustee or director, Officer | 0.5 | $0 | $0 |
| DAVID FLASPOHLER PHD | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| MEGHAN HEFT MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| LYNN MILLER MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| LINNEA ROWSE MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| RAY STOCKING | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| HEIDI GRETHER MS | CHAIR Officer | 1 | $0 | $0 |
990 for the year ended December 31, 2024: 10 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| KATHLEEN MENNILLO | EXECUTIVE DIRECTOR Trustee or director | 40 | $168,411 | $2,077 |
| NATASHA KOSS MS | VICE CHAIR Trustee or director, Officer | 0.5 | $0 | $0 |
| SAMUEL BURCKHARDT | SECRETARY Trustee or director, Officer | 0.5 | $0 | $0 |
| BILL VOLZ JD MBA MA | TREASURER Trustee or director, Officer | 0.5 | $0 | $0 |
| MIKE BISHOP MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| DAVID FLASPOHLER PHD | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| MEGHAN HEFT MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| LYNN MILLER MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| LINNEA ROWSE MS | BOARD MEMBER Trustee or director | 0.5 | $0 | $0 |
| HEIDI GRETHER MS | CHAIR Officer | 1 | $0 | $0 |
990 for the year ended December 31, 2023: 8 people
| Name | Title | Hours / week | Compensation | Other / benefits |
|---|---|---|---|---|
| KATHLEEN MENNILLO | EXECUTIVE DIRECTOR Officer | 40 | $155,468 | $3,289 |
| MIKE BISHOP | MEMBER Trustee or director | 0.5 | $0 | $0 |
| LINNEA ROWSE | MEMBER Trustee or director | 0.5 | $0 | $0 |
| BILL VOLZ | MEMBER Trustee or director | 0.5 | $0 | $0 |
| SAM BURCKHARDT | SECRETARY Trustee or director, Officer | 0.5 | $0 | $0 |
| KATRINA FOLSOM | TREASURER Trustee or director, Officer | 0.5 | $0 | $0 |
| NATASHA KOSS | VICE CHAIR Trustee or director, Officer | 0.5 | $0 | $0 |
| HEIDI GRETHER | CHAIR Trustee or director, Officer | 1 | $0 | $0 |
Address and contacts
- Address (IRS master file)
- 2310 SCIENCE PKWY STE 200, OKEMOS, MI 48864-2525
- Principal officer (990 for 2025)
- KATHLEEN MENNILLO, 2310 SCIENCE PARKWAY SUITE 200, OKEMOS, MI 48864
- Signed the 990
- KATHLEEN MENNILLO, CEO
- Phone
- (517) 580-7364
- Website
- MICHIGANAUDUBON.ORG
- Return prepared by
- KRUGGEL LAWTON & COMPANY LLC
Mission
TO FOSTER AND PROMOTE APPRECIATION AND UNDERSTANDING OF THE NATURAL WORLD BY EDUCATIONAL, SCIENTIFIC, INVESTIGATIVE, LITERARY, PHILANTHROPIC AND CHARITABLE PURSUITS. MICHIGAN AUDUBON CONNECTS BIRDS AND PEOPLE FOR THE BENEFIT OF BOTH THROUGH CONSERVATION, EDUCATION.
Program accomplishments
- RESEARCH - CONDUCT RESEARCH ON MIGRATION PATTERNS OF RAPTORS, OWLS, AND WATERBIRDS IN THE UPPER PENINSULA OF MICHIGAN. MICHIGAN AUDUBON ALSO PARTNERS WITH THE U.S. FISH & WILDLIFE IN MONITORING THE PIPING PLOVER POPULATION IN THE UPPER PENISULA.Expenses $167,876
- CONSERVATION - MICHIGAN AUDUBON IS A LEADER IN ESTABLISHING SANCTUARIES IN THE STATE TO PROTECT WILDLIFE HABITAT. THE ORGANIZATION PLAYS A MAJOR ROLE IN GLOBAL EFFORTS TO IDENTIFY AND PROTECT CRITICAL MIGRATION STOP OVERS AND BREEDING AREAS. THEIR 19 SANCTUARIES AND 4 AFFILIATES MANAGE 5000 ACRES OF IMPORTANT WILDLIFE HABITAT. RIVERS, LAKES, MARSHES, BOGS, FENS, GRASSLANDS, HARDWOODS AND NORTHERN CONIFER COMMUNITIES ARE FOUND IN THESE HABITATS, MANY PROTECTING ENDANGERED SPECIES OF ANIMALS AND PLANTS. MICHIGAN AUDUBON IS A KEY PARTNER IN EFFORTS THAT HAVE PUBLIC IDENTIFIED MORE THAN 100 IMPORTANT BIRD AREAS (IBAS) CRITICAL TO MIGRATING AND BREEDING BIRDS, ESPECIALLY THOSE THAT ARE ENDANGERED OR THREATENED. SANCTUARIES AND IBAS ARE SPREAD THROUGHOUT BOTH PENINSULAS OF THE STATE.Expenses $201,553
- EDUCATION - ONE OF THE THREE PILLARS OF MICHIGAN AUDUBON, EDUCATION ENCOMPASSES A VARIETY OF ACTIVITIES. FROM WORKSHOPS AND CAMPS FOR CHILDREN THROUGH HIGH SCHOOL AGED STUDENTS TO PRESENTATIONS BY EXPERT BIRDERS, MICHIGAN AUDUBON OFFERS A WIDE RANGE OF EDUCATIONAL OPPORTUNITIES FOR ITS MEMBERS AND THE GENERAL PUBLIC. FROM ANSWERING BIRD AND CONSERVATION QUESTIONS TO RECOMMENDING WAYS TO MAKE YOUR BACKYARD A WILDLIFE HABITAT, MICHIGAN AUDUBON STAFF PROVIDES THE PUBLIC WITH BIRD AND CONSERVATION INFORMATION ON A DAILY BASIS.Expenses $110,221 · revenue $47,817
- Expenses $210,295
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
- 38-1686621
- Tax-exempt status
- 501(c)(3): Charitable, religious, educational or scientific organization
- Foundation status
- Publicly supported organization (509(a)(2))
- Donations deductible (Pub 78)
- Group exemption
- Exempt since
- 1990
- Accounting year ends
- December
- Files
- Form 990 or 990-EZ
- Category (NTEE)
- Environment (C300)
- Group exemption
- 5135
- Assets (IRS master file)
- $7,049,028
- Income (IRS master file)
- $1,459,525
Filing history
| Form | Year ended | Revenue | Expenses | Assets | Return |
|---|---|---|---|---|---|
| 990 | December 2025 | $1,171,063 | $1,133,728 | $7,049,028 | XML |
| 990 | December 2024 | $1,768,355 | $1,027,404 | $6,780,191 | XML |
| 990 | December 2023 | $594,285 | $740,767 | $5,895,939 | XML |
| 990 | December 2022 | $653,456 | $663,043 | $5,023,622 | IRS |
| 990 | December 2021 | – | – | – | IRS |
| 990 | December 2020 | – | – | – | IRS |
| 990 | December 2019 | – | – | – | 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 38-1686621).
Questions about MICHIGAN AUDUBON SOCIETY
- What is the EIN of MICHIGAN AUDUBON SOCIETY?
- The employer identification number (EIN) of MICHIGAN AUDUBON SOCIETY is 38-1686621.
- Is MICHIGAN AUDUBON SOCIETY tax-exempt?
- Yes. The IRS lists it as tax-exempt under section 501(c)(3) since 1990.
- Are donations to MICHIGAN AUDUBON SOCIETY tax-deductible?
- Yes. It is listed in IRS Publication 78 (Group exemption).
- Which annual return does MICHIGAN AUDUBON SOCIETY 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 MICHIGAN AUDUBON SOCIETY 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 MICHIGAN AUDUBON SOCIETY 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 MICHIGAN AUDUBON SOCIETY?
- The 990 for the year ended December 31, 2025 names KATHLEEN MENNILLO.
- Who are the officers and directors of MICHIGAN AUDUBON SOCIETY?
- The 990 for the year ended December 31, 2025 lists 10 people; 1 received compensation from the organization, the highest $156,616 (KATHLEEN MENNILLO, EXECUTIVE DIRECTOR).
- How much revenue does MICHIGAN AUDUBON SOCIETY have?
- On its 990 for the year ended December 31, 2025 it reported revenue of $1,171,063, expenses of $1,133,728 and total assets of $7,049,028 at year end.
Other nonprofits in OKEMOS
- MICHIGAN NATURE ASSOCIATION EIN 38-6093404 · last filed 990 for 2025
- THE MID-MICHIGAN LAND CONSERVANCY EIN 38-2558197 · last filed 990 for 2025
- CLEAN AND SUSTAINABLE ENERGY FUND EIN 83-2865018 · last filed 990 for 2024
- FUND FOR THE ENVIRONMENT EIN 38-2721314 · last filed 990-N for 2025
- MICHIGAN WETLANDS ASSOCIATION EIN 27-3111528 · last filed 990-EZ for 2024
- COALITION TO PROTECT MICHIGAN RESOURCES EIN 38-3466940 · last filed 990-N for 2025
- STARFLOWER ECOLOGICAL ALLIANCE EIN 39-3881384 · last filed 990-EZ for 2026
- ENVIRONMENTAL COUNCIL OF WATERFORD EIN 33-3087546 · last filed 990-N for 2025