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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 Wolverine Power Supply Cooperative Inc. Donald Heffelfinger

Donald Heffelfinger

Highest compensated employee

Senior Maintenance Engineer at Wolverine Power Supply Cooperative Inc.

Fiscal year ended December 31, 2016. Published on January 24, 2026.

$162,580

2016

Total compensation

Donald Heffelfinger has been listed as an employee of Wolverine Power Supply Cooperative Inc. in Form 990 filings since at least fiscal year 2016.

Annual compensation details

$162,580

Senior Maintenance Engineer

2016

$121k

45 hrs/wk

$43k

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Total compensation by year

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Revisions to this profile

January 24, 2026:

2016 Wolverine Power Supply Cooperative Inc. 990 published

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2016

Other employees at Wolverine Power Supply Cooperative Inc.

Eric D Baker

President and Chief Executive Officer

$691,086

$613,814 No related comp$77,272

Craig Borr

Executive Vice President

$444,620

$367,348 No related comp$77,272

Janet Kass

Chief Financial Officer

$296,695

$238,202 No related comp$58,493

Craig Borton

Vice President, Human Resources

$267,090

$207,618 No related comp$59,472

Dan Decoeur

Vice President, Operations

$253,700

$191,180 No related comp$62,520

Kimberly Molitor

Vice President, Business Development

$235,280

$192,969 No related comp$42,311

Brian Warner

Vice President of Environmental Strategy

$210,738

$161,284 No related comp$49,454

Timothy Martin

Vice President, Engineering

$192,699

$152,940 No related comp$39,759

Brian Valice

Staff Attorney

$187,379

$137,691 No related comp$49,688