| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2022 |
Transportation, Department Of |
Century Fence Co |
$4,409,778.36 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Kahler Slater |
$4,409,186.13 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Columbia County |
$4,406,561.43 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Dodge County |
$4,405,963.85 |
Wisconsin State Checkbook |
| 2016 |
University Of Wisconsin System |
Reinhart Food Svc Inc |
$4,405,645.47 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Affirm Agency |
$4,403,790.25 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Marathon County |
$4,402,236.25 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
St. Croix County |
$4,401,279.91 |
Wisconsin State Checkbook |
| 2021 |
Core Retirement Investment Trust |
Staywell Company Llc, The |
$4,391,873.31 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Racine County |
$4,387,982.33 |
Wisconsin State Checkbook |
| 2023 |
Corrections, Department Of |
Vanguard Storage & Recovery Jv |
$4,386,766.55 |
Wisconsin State Checkbook |
| 2022 |
Educational Communications Board |
University Of Wisconsin System |
$4,384,811.34 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Corre Inc |
$4,382,994.64 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Gerke Excavating, Inc |
$4,381,886.27 |
Wisconsin State Checkbook |
| 2023 |
Building Commission |
Bwbr Architects Inc |
$4,379,109.03 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Huron Consulting Services Llc |
$4,379,053.72 |
Wisconsin State Checkbook |
| 2022 |
Workforce Development, Department Of |
Fed-Oasdi Specialized Disb. Supplier |
$4,378,223.56 |
Wisconsin State Checkbook |
| 2022 |
Health Services, Department Of |
Fusion Medical Staffing Llc |
$4,375,384.48 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Eyekor Llc |
$4,372,542.54 |
Wisconsin State Checkbook |
| 2023 |
Administration, Department Of |
Cdw Government Inc |
$4,370,044.40 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Eab Global Inc |
$4,369,023.01 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Emcs Inc |
$4,368,601.94 |
Wisconsin State Checkbook |
| 2023 |
Building Commission |
Johnson Controls Inc |
$4,366,578.74 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Jt Engineering Inc |
$4,363,407.59 |
Wisconsin State Checkbook |
| 2024 |
Educational Communications Board |
Uw-Madison |
$4,359,141.38 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Racine Co Hwy Dept |
$4,357,821.91 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Winnebago County |
$4,356,653.58 |
Wisconsin State Checkbook |
| 2017 |
Public Instruction, Department Of |
Department Of Administration |
$4,356,176.48 |
Wisconsin State Checkbook |
| 2017 |
Public Instruction, Department Of |
Department Of Administration |
$4,356,176.48 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Wisconsin Retirement System |
$4,353,208.26 |
Wisconsin State Checkbook |
| 2021 |
Wisconsin State Checkbook |
Wisconsin Public Service Corp |
$4,350,599.34 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Zoo North Partners, Joint Venture, Llc |
$4,350,316.29 |
Wisconsin State Checkbook |
| 2024 |
Building Commission |
Mz Construction Inc |
$4,349,688.29 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Euro Paint Llc |
$4,344,786.97 |
Wisconsin State Checkbook |
| 2022 |
Natural Resources, Department Of |
Knowledge Services |
$4,341,143.08 |
Wisconsin State Checkbook |
| 2020 |
General Fund |
Spherion Staffing |
$4,338,531.36 |
Wisconsin State Checkbook |
| 2022 |
Administration, Department Of |
Sun Microsystem Inc |
$4,337,303.90 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Vitech Systems Group |
$4,336,556.00 |
Wisconsin State Checkbook |
| 2017 |
Employee Trust Funds, Department Of |
Vitech Systems Group |
$4,336,556.00 |
Wisconsin State Checkbook |
| 2018 |
Public Instruction, Department Of |
Department Of Administration |
$4,336,338.11 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Meise Construction Inc |
$4,335,705.92 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Marathon County |
$4,333,921.86 |
Wisconsin State Checkbook |
| 2025 |
Health Services, Department Of |
Carahsoft Technology Corp |
$4,333,203.70 |
Wisconsin State Checkbook |
| 2023 |
Justice, Department Of |
Wisconsin Retirement System |
$4,328,887.09 |
Wisconsin State Checkbook |
| 2025 |
Health Services, Department Of |
Fusion Medical Staffing Llc |
$4,328,868.90 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Veit & Company Inc |
$4,326,900.76 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Daar Engineering Inc |
$4,324,122.39 |
Wisconsin State Checkbook |
| 2022 |
Health Services, Department Of |
Public Consulting Group, Inc |
$4,323,497.04 |
Wisconsin State Checkbook |
| 2016 |
University Of Wisconsin System |
Us Bank Corporate Payment Sys |
$4,323,310.48 |
Wisconsin State Checkbook |
| 2023 |
Health Services, Department Of |
Indianhead Food Sv Distributor |
$4,321,223.93 |
Wisconsin State Checkbook |
| 2016 |
University Of Wisconsin System |
Us Bank Corporate Payment |
$4,320,083.38 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Insight Public Sector |
$4,317,810.88 |
Wisconsin State Checkbook |
| 2025 |
Safety And Professional Services, Department Of |
Employee Trust Funds |
$4,315,829.74 |
Wisconsin State Checkbook |
| 2019 |
Administration, Department Of |
Ibm Corporation |
$4,315,272.41 |
Wisconsin State Checkbook |
| 2019 |
Administration, Department Of |
Ibm Corporation |
$4,315,272.41 |
Wisconsin State Checkbook |
| 2024 |
Health Services, Department Of |
Univ Of Wi Hosp & Clinics |
$4,311,545.17 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Rock County |
$4,310,605.07 |
Wisconsin State Checkbook |
| 2021 |
General Fund |
Hiebing Group Inc, The |
$4,306,224.56 |
Wisconsin State Checkbook |
| 2018 |
Building Commission |
Strang Inc |
$4,304,542.24 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
County Of Brown |
$4,301,605.97 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Relyco Inc |
$4,299,445.40 |
Wisconsin State Checkbook |
| 2025 |
University Of Wisconsin System |
Staples Inc |
$4,298,063.06 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Fahrner Asphalt Sealers Llc |
$4,296,772.75 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Winnebago County |
$4,289,520.08 |
Wisconsin State Checkbook |
| 2025 |
Workforce Development, Department Of |
Carahsoft Technology Corp |
$4,288,044.76 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Center For Applied Linguistics |
$4,280,329.10 |
Wisconsin State Checkbook |
| 2018 |
Miscellaneous Appropriations |
Doa Checks - Stale Date-Reissue |
$4,273,051.48 |
Wisconsin State Checkbook |
| 2018 |
Building Commission |
Gilbank Construction Inc |
$4,272,976.35 |
Wisconsin State Checkbook |
| 2025 |
Insurance, Office Of The Commissioner Of |
Department Of Administration |
$4,272,394.21 |
Wisconsin State Checkbook |
| 2020 |
Transportation |
Pitlik & Wick Inc |
$4,260,501.65 |
Wisconsin State Checkbook |
| 2016 |
University Of Wisconsin System |
Ebsco Information Services |
$4,252,571.15 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
Washington County |
$4,247,887.78 |
Wisconsin State Checkbook |
| 2024 |
Transportation, Department Of |
Columbia County |
$4,246,057.64 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Cbn Secure Technologies Inc |
$4,241,567.59 |
Wisconsin State Checkbook |
| 2018 |
Justice, Department Of |
Tapfin Process Solutions |
$4,239,381.68 |
Wisconsin State Checkbook |
| 2022 |
Transportation, Department Of |
Rock County |
$4,233,734.20 |
Wisconsin State Checkbook |
| 2024 |
University Of Wisconsin System |
Illumina Inc |
$4,231,778.35 |
Wisconsin State Checkbook |
| 2021 |
Transportation |
Omnni Engineers Arch |
$4,230,787.86 |
Wisconsin State Checkbook |
| 2023 |
Children And Families, Department Of |
University Of Wisconsin System |
$4,230,666.18 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Anthony Travel Inc |
$4,227,275.58 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
La Crosse County |
$4,226,363.52 |
Wisconsin State Checkbook |
| 2022 |
Public Instruction, Department Of |
Department Of Administration |
$4,221,780.30 |
Wisconsin State Checkbook |
| 2023 |
Children And Families, Department Of |
Maximus |
$4,221,149.26 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Madison Metro Transit |
$4,218,480.50 |
Wisconsin State Checkbook |
| 2023 |
Transportation, Department Of |
Gremmer & Assoc Inc |
$4,217,930.20 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Graef-Usa Inc |
$4,216,961.40 |
Wisconsin State Checkbook |
| 2024 |
Health Services, Department Of |
Healthtech Solutions Llc |
$4,204,882.44 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Bloom Companies Llc |
$4,203,805.56 |
Wisconsin State Checkbook |
| 2017 |
Revenue, Department Of |
Fed-oasdi Specialized Disb. Supplier |
$4,191,169.98 |
Wisconsin State Checkbook |
| 2017 |
Revenue, Department Of |
Fed-Oasdi Specialized Disb. Supplier |
$4,191,169.98 |
Wisconsin State Checkbook |
| 2018 |
Justice, Department Of |
Department Of Health Services |
$4,187,626.02 |
Wisconsin State Checkbook |
| 2019 |
Transportation, Department Of |
Ayres Associates |
$4,186,223.28 |
Wisconsin State Checkbook |
| 2022 |
University Of Wisconsin System |
Staples Advantage |
$4,184,042.90 |
Wisconsin State Checkbook |
| 2023 |
University Of Wisconsin System |
Academic Partnerships Llc |
$4,181,638.17 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Chippewa Co Hwy Dept |
$4,181,569.71 |
Wisconsin State Checkbook |
| 2024 |
Children And Families, Department Of |
Wisconsin Retirement System |
$4,178,642.84 |
Wisconsin State Checkbook |
| 2025 |
Transportation, Department Of |
We Energies |
$4,176,847.83 |
Wisconsin State Checkbook |
| 2016 |
Transportation, Department Of |
Badger State Industries |
$4,168,216.06 |
Wisconsin State Checkbook |
| 2023 |
Natural Resources, Department Of |
University Of Wisconsin System |
$4,162,359.89 |
Wisconsin State Checkbook |
| 2025 |
Corrections, Department Of |
Mortenson Investment Group Llc |
$4,161,752.77 |
Wisconsin State Checkbook |