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Person · officer / director

Mark Gauf

Treasurer · International Union of Operating Engineers 139

Treasurer at International Union of Operating Engineers 139. Listed as an officer, director, or key employee across 2 organizations on the Form 990 record.

Organizations
2
Roles reported
2
Reported compensation
$172K

Who this is

Profile

Everything on the left is verified from the IRS filings. The biography on the right is compiled from public web sources and grounded to that filed record.

✓ Verified from filings
Reported as Treasurer of International Union of Operating Engineers 139, based in Pewaukee, WI.
Received $172K in total reported compensation on the most recent Form 990 (Part VII).
Also listed as Trustee - Former of Wisconsin Operating Engineers Skill Improvement and Apprenticeship Fund, uncompensated.
Facts extracted directly from each organization's Form 990, Part VII.
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Affiliations

Organizations

Linked as the same person by IRS Schedule R, a shared officer mailing address, or shared fellow board members.

I
International Union of Operating Engineers 139 Treasurer · $17.2M revenue · Pewaukee, WITO ELEVATE THE TRADE OF OPERATING ENGINEERS AND IMPROVE THE SOCIAL, ECONOMIC AND WORKING CONDITIONS OF ITS MEMBERS.pay $166K → $172KFiled FY2023, FY2022, FY2021, FY2020 · Source: Form 990, Part VII
$172Kreported comp
Wisconsin Operating Engineers Skill Improvement and Apprenticeship Fund Trustee - Former · $13.9M revenue · Pewaukee, WITO PROVIDE SKILL IMPROVEMENT, SAFETY, AND TRAINING PROGRAMS FOR APPRENTICESHIP, EMPLOYEE, JOURNEYMEN, OR INSTRUCTOR TRAINING AND EDUCATION IN THE…Filed FY2023 · Source: Form 990, Part VII

Network

Serves alongside

Other officers, directors & key employees at this person's organizations, by latest reported compensation.

M
President/Busines Mgr · FY2025
$219K
T
President/Busines Mgr · FY2023
$204K
T
Bus Mgr/Pres · FY2020
$199K
G
Recording Secretary · FY2025
$191K
B
Financial Secretary · FY2025
$188K
S
Vice President · FY2025
$186K
R
Treasurer · FY2025
$185K
D
Training Director · FY2024
$178K
S
Financial Secretary · FY2023
$173K
S
Recording Secretary · FY2023
$173K
D
Vice President · FY2023
$172K
M
Trustee · FY2025
$171K

Network

Recommendations

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Public data from IRS Form 990 e-file & the Business Master File. Individuals appear here because they were named as an officer, director, or key employee on a nonprofit's Form 990; people are grouped by name plus corroborating evidence (Schedule R, shared address, shared board members). · philanthropy.org