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Compensation 990 is an independent service that uses public IRS Form 990 filings as its source data. We clean and standardize this information, but the original filings may contain errors or omissions. Years on this site refer to the organization’s fiscal year end date on the filing.

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Organizations Grass River Natural Area Inc.

Grass River Natural Area Inc.

Fiscal year ending 2024. Filed on October 9, 2025.

PO Box 231
Bellaire, Michigan 49615

Grass River Natural Area Inc. (EIN: 38-2279204) has filed an IRS Form 990 since at least fiscal year 2016. In its fiscal year 2024 IRS Form 990 filing, Grass River Natural Area Inc., a 501(c)(3) charitable organization, reported compensation for 0 out of 17 total employees.

Revenue, expenses, and employee compensation

Revenue

$1,450,621

Expenses

$785,156

Employee compensation

$305,335
Revenue, expenses, and employee compensation over time

Reported Compensated Employees

No compensated employees were reported for this year (employee data available for 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016).

Non-Employee Board Members

Charlie Polzin
Vice Chair
Chris Hale
Secretary
Gary Knapp
Director
Gillian Cobb Niemisto
Director
Jenn Wright
Executive Director
Jim Costello
Director
Jim Hook
Director
Joe Fischer
Director
Mindy Lewin
Treasurer
Rich Hannan
Director
Steve Springsdorf
Chair
Terri Vanalstine
Director

Mission Statement

ENVIRONMENTAL EDUCATION AND LAND PRESERVATION

Revisions to this organization profile

October 9, 2025:
2024 Grass River Natural Area Inc. 990 filed
September 15, 2024:
2023 Grass River Natural Area Inc. 990 filed
November 15, 2023:
2022 Grass River Natural Area Inc. 990 filed

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