Year	Employer	Vendor Name	Amount	Source
2025	Revenue	Norridge Village Treasurer	$19,877,773.99	Illinois State Checkbook
2025	State Police	Motorola Solutions Inc	$19,873,671.69	Illinois State Checkbook
2021	Environmental Protect Agency	Village Of Oak Lawn	$19,871,579.45	Illinois State Checkbook
2024	Transportation	Johnson Bros Corporationa	$19,864,854.78	Illinois State Checkbook
2022	Revenue	Monticello Cusd 25	$19,864,264.71	Illinois State Checkbook
2017	Revenue	Peoria County Treasurer	$19,862,042.71	Illinois State Checkbook
2025	Il State Toll Highway Auth	Accenture Llp	$19,857,305.13	Illinois State Checkbook
2020	State Board Of Education	Concept Schools Inc	$19,855,095.58	Illinois State Checkbook
2020	State Board Of Education	Plano C U School	$19,847,418.06	Illinois State Checkbook
2025	Revenue	Bloomingdale Village Treasurer	$19,839,237.09	Illinois State Checkbook
2024	Human Services	Beverly Farm Foundation	$19,830,404.09	Illinois State Checkbook
2021	Capital Development Board	Joliet Junior College Icc Dist	$19,828,400.00	Illinois State Checkbook
2024	State Board Of Education	Charleston Community Unit	$19,827,498.95	Illinois State Checkbook
2021	State Board Of Education	North Palos School Dist 117	$19,825,394.55	Illinois State Checkbook
2020	Il Student Assistance Comm	De Paul University	$19,821,474.64	Illinois State Checkbook
2024	Environmental Protect Agency	Four Rivers Sanitation Athrty	$19,819,542.21	Illinois State Checkbook
2020	Revenue	Lombard Village Treasurer	$19,817,005.87	Illinois State Checkbook
2021	Revenue	Dekalb City Treasurer	$19,811,153.50	Illinois State Checkbook
2021	Il State Toll Highway Auth	Jacobs Engineering Group Inc	$19,797,520.72	Illinois State Checkbook
2020	State Board Of Education	Board Of Education	$19,784,363.67	Illinois State Checkbook
2017	Revenue	Hoffman Estates Vlg Treasurer	$19,782,303.74	Illinois State Checkbook
2024	State Board Of Education	Glenbard Township High School	$19,778,358.27	Illinois State Checkbook
2018	Transportation	Walsh Construction Co Ii Llc	$19,770,955.64	Illinois State Checkbook
2021	Healthcare & Family Services	Alden Village Health Facility	$19,768,959.97	Illinois State Checkbook
2022	Transportation	Greater Rockford Airport Auth	$19,761,553.27	Illinois State Checkbook
2019	State Board Of Education	Mascoutah Community Unit	$19,758,351.95	Illinois State Checkbook
2018	Revenue	County Of Dupage Illinois Tran	$19,758,344.88	Illinois State Checkbook
2022	Transportation	Christ Bros Asphalt Inc	$19,751,019.08	Illinois State Checkbook
2025	Human Services	Annashae Corp	$19,749,668.55	Illinois State Checkbook
2024	Healthcare & Family Services	Central Dupage Hospital Assn	$19,745,668.18	Illinois State Checkbook
2018	Healthcare & Family Services	Franciscan Health Olympia	$19,729,485.27	Illinois State Checkbook
2019	Transportation	Arrow Road Construction Co	$19,727,049.05	Illinois State Checkbook
2021	Healthcare & Family Services	Central Dupage Hospital Assn	$19,720,122.64	Illinois State Checkbook
2019	Environmental Protect Agency	Central Lake Co Joint Action	$19,715,769.96	Illinois State Checkbook
2024	Human Services	Annashae Corp	$19,705,954.52	Illinois State Checkbook
2025	Transportation	Mchenry County	$19,695,414.37	Illinois State Checkbook
2021	Revenue	Mount Vernon City Treasurer	$19,690,965.48	Illinois State Checkbook
2020	State Board Of Education	Community High Schl Dist 155	$19,687,475.07	Illinois State Checkbook
2021	Revenue	Wheaton City Treasurer	$19,684,518.31	Illinois State Checkbook
2025	Revenue	Streamwood Village Treasurer	$19,682,983.07	Illinois State Checkbook
2022	Innovation And Technology	Accenture Llp	$19,676,305.56	Illinois State Checkbook
2021	Il State Toll Highway Auth	Toll Highway Authority	$19,670,789.99	Illinois State Checkbook
2023	Transportation	Kane County Of	$19,666,134.03	Illinois State Checkbook
2021	State Board Of Education	Kewanee Community Unit School	$19,665,779.88	Illinois State Checkbook
2024	Corrections	State Of Il-Corrections	$19,665,160.49	Illinois State Checkbook
2017	Transportation	Millstone Weber Llc	$19,664,744.83	Illinois State Checkbook
2017	Transportation	Civil Constructors Inc Of Il	$19,660,228.35	Illinois State Checkbook
2022	Human Services	Chestnut Health Systems Inc	$19,655,574.08	Illinois State Checkbook
2018	Revenue	Hoffman Estates Vlg Treasurer	$19,647,965.16	Illinois State Checkbook
2018	Transportation	Herlihy Mid Continent Company	$19,642,386.17	Illinois State Checkbook
2017	Healthcare & Family Services	Thc-chicago Inc	$19,641,834.89	Illinois State Checkbook
2022	State Board Of Education	County Of Christian	$19,637,850.12	Illinois State Checkbook
2022	Il Community College Board	Moraine Valley Comm College	$19,629,746.85	Illinois State Checkbook
2025	Il Emergency Management Agcy	Federal Emergency Management	$19,629,350.48	Illinois State Checkbook
2025	Healthcare & Family Services	Uhs Of Hartgrove Inc	$19,613,777.42	Illinois State Checkbook
2022	State Board Of Education	Central Community Unit	$19,611,586.44	Illinois State Checkbook
2018	Environmental Protect Agency	Rock River Water	$19,608,446.97	Illinois State Checkbook
2022	Commerce And Economic Opportun	Community Action Partnership	$19,605,141.36	Illinois State Checkbook
2023	State Board Of Education	Edwardsville Community Unit	$19,598,753.07	Illinois State Checkbook
2019	Healthcare & Family Services	Swedish Covenant Hospital	$19,591,224.15	Illinois State Checkbook
2018	State Board Of Education	Urbana School District 116	$19,581,097.68	Illinois State Checkbook
2024	Human Services	Chestnut Health Systems Inc	$19,575,158.10	Illinois State Checkbook
2023	Revenue	Calumet City Treasurer	$19,568,991.68	Illinois State Checkbook
2022	Aging	Assyrian Universal Alliance Fn	$19,560,023.73	Illinois State Checkbook
2021	Revenue	Carol Stream Village Treasurer	$19,537,826.89	Illinois State Checkbook
2024	Revenue	Calumet City Treasurer	$19,536,737.26	Illinois State Checkbook
2019	Human Services	Community Living Options Inc	$19,536,015.99	Illinois State Checkbook
2018	Aging	Gareda Llc	$19,523,167.64	Illinois State Checkbook
2025	Revenue	Loves Park City Treasurer	$19,508,764.68	Illinois State Checkbook
2022	State Board Of Education	Grayslake Community High Schl	$19,501,713.74	Illinois State Checkbook
2018	Il State Toll Highway Auth	Aaron Equipment Company Inc	$19,500,000.00	Illinois State Checkbook
2019	State Board Of Education	Marquardt School District 15	$19,492,775.77	Illinois State Checkbook
2017	Transportation	Judlau Contracting Inc	$19,492,701.65	Illinois State Checkbook
2021	Revenue	St Clair County Treasurer	$19,487,769.27	Illinois State Checkbook
2025	Il Student Assistance Comm	National-Louis University	$19,478,325.00	Illinois State Checkbook
2024	Human Services	Illinois Dept Of Healthcare	$19,471,947.84	Illinois State Checkbook
2020	Transportation	Chicago Metropolitan Agency	$19,447,849.96	Illinois State Checkbook
2017	Revenue	County Of Dupage Illinois Tran	$19,432,039.38	Illinois State Checkbook
2020	Revenue	Buffalo Grove Village Treasure	$19,431,463.99	Illinois State Checkbook
2020	Revenue	Glendale Heights Vlg Treasurer	$19,429,601.58	Illinois State Checkbook
2021	Revenue	New Lenox Village Treasurer	$19,428,537.24	Illinois State Checkbook
2025	Revenue	Calumet City Treasurer	$19,408,569.53	Illinois State Checkbook
2019	Il State Toll Highway Auth	Wsp Usa Inc	$19,393,130.08	Illinois State Checkbook
2017	Revenue	Carbondale City Treasurer	$19,383,437.96	Illinois State Checkbook
2020	Healthcare & Family Services	Advantage Nursing Svcs Inc	$19,382,631.51	Illinois State Checkbook
2020	Healthcare & Family Services	University Of Il - Chicago	$19,374,169.00	Illinois State Checkbook
2024	Human Services	Amn Healthcare Inc	$19,371,612.80	Illinois State Checkbook
2020	State Board Of Education	Crystal Lake Community	$19,366,460.80	Illinois State Checkbook
2019	Revenue	Educational Svc Region Office	$19,358,800.19	Illinois State Checkbook
2021	State Board Of Education	Jacksonville School Dist 117	$19,356,246.65	Illinois State Checkbook
2021	Revenue	Champaign County Treasurer	$19,355,742.75	Illinois State Checkbook
2021	Revenue	Carbondale City Treasurer	$19,349,629.36	Illinois State Checkbook
2020	Revenue	Hoffman Estates Vlg Treasurer	$19,348,582.66	Illinois State Checkbook
2019	Il State Toll Highway Auth	Ch2m Hill Inc	$19,345,204.17	Illinois State Checkbook
2025	State Board Of Education	Bethalto Unit No 8	$19,339,451.27	Illinois State Checkbook
2023	State Board Of Education	Calumet Township School Treas	$19,332,691.92	Illinois State Checkbook
2018	Revenue	Belleville City Treasurer	$19,331,516.43	Illinois State Checkbook
2025	Innovation And Technology	Carahsoft Technology Corp	$19,331,389.71	Illinois State Checkbook
2018	Healthcare & Family Services	Ssm Cardinal Glennon	$19,329,955.73	Illinois State Checkbook
2024	Revenue	Rosemont Village Treasurer	$19,328,741.75	Illinois State Checkbook