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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 International Union of Operating Engineers Local 12 Carl Sierra

Carl Sierra

Highest compensated employee

Supervisor - Organizer at International Union of Operating Engineers Local 12

Fiscal year ended December 31, 2023. Published on January 25, 2026.

$218,654
2023

Total compensation

Carl Sierra has been listed as an employee of International Union of Operating Engineers Local 12 in Form 990 filings since fiscal year 2017. Total compensation for Carl Sierra has increased by 20.7% from 2017 to 2023.

Annual compensation details

$218,654
+11.7%
Supervisor - Organizer
2023
$151k
40 hrs/wk
$69k
--
$195,682
Supervisor-Organizer
2022
$131k
40 hrs/wk
$66k
--
$194,320
+7.3%
Business Agent
2018
$138k
40 hrs/wk
$57k
--
$181,182
Business Agent
2017
$125k
40 hrs/wk
$57k
--

Total compensation by year

Compare the compensation of Carl Sierra to:

Revisions to this profile

January 25, 2026:
2023 International Union of Operating Engineers Local 12 990 published
January 25, 2026:
2022 International Union of Operating Engineers Local 12 990 published
January 24, 2026:
2018 International Union of Operating Engineers Local 12 990 published

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2023

Other employees at International Union of Operating Engineers Local 12

David K Sikorski
Business Manager
$349,852
$281,682 No related comp$68,170
David A Garbarino
President
$294,354
$226,184 No related comp$68,170
Robert J Ninteman
Treasurer
$290,955
$222,785 No related comp$68,170
Perry Hawkins III
Financial Secretary
$289,533
$221,363 No related comp$68,170
Kenneth R Hunt
Vice President
$288,851
$220,681 No related comp$68,170
Shawn O Kinsey
Rec-Correspond SEC
$286,675
$218,505 No related comp$68,170
Hugo A Tzec
In-House Counsel
$279,414
$211,244 No related comp$68,170
Nicholas D Difranco
Trustee/District REP
$221,521
$153,351 No related comp$68,170
Martin R Collins
Conductor/Dist. REP
$218,636
$150,466 No related comp$68,170