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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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Employees Wisconsin Montessori Society Inc. Katherine Lewis

Katherine Lewis

Officer

President at Wisconsin Montessori Society Inc.

Fiscal year ended June 30, 2025. Published on January 25, 2026.

$0
2025

Total compensation

Katherine Lewis has been listed as an employee of Wisconsin Montessori Society Inc. in Form 990 filings since fiscal year 2017.

Annual compensation details

$0
President
2025
$0
President
2024
$0
President
2023
$0
President
2022
$0
President
2021
$0
President
2020
$0
President
2019
$0
President
2018
$0
President
2017

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Revisions to this profile

January 25, 2026:
2025 Wisconsin Montessori Society Inc. 990 published
January 25, 2026:
2024 Wisconsin Montessori Society Inc. 990 published
January 25, 2026:
2023 Wisconsin Montessori Society Inc. 990 published

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2025

Other employees at Wisconsin Montessori Society Inc.

Monica van Aken 7124 - 63025
Head of School
$239,091
$228,063 No related comp$11,028
Debbie Mather
Business Manager
$134,952
$122,800 No related comp$12,152
David Swanson 5125 - 63025
Head of School
$91,742
$80,656 No related comp$11,086
Rob Dejong
Treasurer
$0
Christian Walters
Secretary
$0
Kathleen O'Brien
Vice President
$0

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