Year	Employer	Vendor Name	Amount	Source
2020	Il State Toll Highway Auth	Plote Construction Inc	$41,192,912.60	Illinois State Checkbook
2020	Healthcare & Family Services	Optum Government Solutions Inc	$40,989,343.66	Illinois State Checkbook
2020	Healthcare & Family Services	St Johns Hospital Sisters Of	$40,973,674.28	Illinois State Checkbook
2018	University Of Illinois	University Of Illinois	$40,824,735.58	Illinois State Checkbook
2018	Revenue	Chicago Park District	$40,777,953.62	Illinois State Checkbook
2017	Revenue	Elgin City Treasurer	$40,610,207.73	Illinois State Checkbook
2021	Il Criminal Justice Info Auth	Illinois Coalition Against	$40,602,463.73	Illinois State Checkbook
2022	State Board Of Education	Joliet Twp Hs Dist 204	$40,560,666.47	Illinois State Checkbook
2022	Healthcare & Family Services	Deloitte Consulting Llp	$40,556,454.71	Illinois State Checkbook
2022	Revenue	Chicago City Comm Coll 508	$40,545,626.19	Illinois State Checkbook
2020	Il Criminal Justice Info Auth	Illinois Coalition Against	$40,493,063.21	Illinois State Checkbook
2022	Transportation	Iroquois Paving Corp	$40,459,150.96	Illinois State Checkbook
2021	Transportation	Stark Excavating Inc	$40,446,126.03	Illinois State Checkbook
2017	Central Management	Cigna Health And Life Ins Co	$40,304,177.09	Illinois State Checkbook
2022	Human Services	Illinois Dept Of Human Svcs	$40,242,738.00	Illinois State Checkbook
2019	State Board Of Education	Cahokia Comm School Dist 187	$40,228,196.12	Illinois State Checkbook
2017	Revenue	Bolingbrook Village Treasurer	$40,227,162.18	Illinois State Checkbook
2019	Capital Development Board	River City Construction Llc	$40,222,645.35	Illinois State Checkbook
2017	Healthcare & Family Services	Carle Foundation Hospital	$40,021,700.32	Illinois State Checkbook
2020	State Board Of Education	Mclean County Unit Dist No 5	$40,003,330.77	Illinois State Checkbook
2021	State Board Of Education	Niles Twp School Treasurer	$39,892,129.51	Illinois State Checkbook
2021	Revenue	Orland Park Village Treasurer	$39,877,068.71	Illinois State Checkbook
2019	Il Student Assistance Comm	Navient Solutions Inc	$39,826,057.29	Illinois State Checkbook
2022	State Board Of Education	Freeport School District 145	$39,802,930.56	Illinois State Checkbook
2018	Il State Toll Highway Auth	Fh Paschen S N Nielsen &	$39,801,108.34	Illinois State Checkbook
2018	State Board Of Education	Cahokia Comm School Dist 187	$39,755,277.93	Illinois State Checkbook
2021	Il State Toll Highway Auth	Wheatland Title Companies Inc	$39,707,642.00	Illinois State Checkbook
2021	Revenue	Mount Prospect Village Treasur	$39,662,126.68	Illinois State Checkbook
2020	Il State Toll Highway Auth	Curran Contracting Company	$39,640,693.59	Illinois State Checkbook
2020	Environmental Protect Agency	Metropolitan Water Reclamation	$39,483,600.00	Illinois State Checkbook
2017	State Board Of Education	Kankakee School Dist 111	$39,364,537.50	Illinois State Checkbook
2021	State Board Of Education	Collinsville Community Unit	$39,336,287.66	Illinois State Checkbook
2018	Transportation	St Clair County Transit Dist	$39,335,445.43	Illinois State Checkbook
2020	State Board Of Education	Rock Island School Dstrct #41	$39,331,143.21	Illinois State Checkbook
2022	Innovation And Technology	Deloitte Consulting Llp	$39,240,798.82	Illinois State Checkbook
2019	State Board Of Education	Granite City Cusd 9	$39,219,096.06	Illinois State Checkbook
2019	Revenue	Metrpltn Water Rclm Dist Of Ch	$39,206,276.76	Illinois State Checkbook
2021	Innovation And Technology	Carahsoft Technology Corp	$39,188,500.70	Illinois State Checkbook
2020	State Board Of Education	Community Unit School District	$39,172,434.48	Illinois State Checkbook
2020	Transportation	National Railroad Passenger Co	$39,134,959.03	Illinois State Checkbook
2017	State Board Of Education	Wheeling Township Schools	$39,115,618.25	Illinois State Checkbook
2017	Revenue	Skokie Village Treasurer	$39,024,675.44	Illinois State Checkbook
2018	Environmental Protect Agency	Fox Metro Water Rclmtn Dist	$38,987,171.81	Illinois State Checkbook
2022	State Board Of Education	Huntley Community School	$38,674,241.75	Illinois State Checkbook
2018	Revenue	Skokie Village Treasurer	$38,674,160.71	Illinois State Checkbook
2018	Transportation	Judlau Contracting Inc	$38,665,827.84	Illinois State Checkbook
2020	Il State Toll Highway Auth	Wheatland Title Companies Inc	$38,662,800.00	Illinois State Checkbook
2022	State Board Of Education	Community Unit School	$38,653,547.94	Illinois State Checkbook
2018	Il State Toll Highway Auth	Lorig Construction Company	$38,631,328.80	Illinois State Checkbook
2021	Revenue	Waukegan City Treasurer	$38,609,371.74	Illinois State Checkbook
2021	Innovation And Technology	Deloitte Consulting Llp	$38,580,685.90	Illinois State Checkbook
2020	Il Student Assistance Comm	Navient Solutions Inc	$38,544,939.41	Illinois State Checkbook
2019	State Board Of Education	North Chicago School District	$38,531,474.91	Illinois State Checkbook
2021	Il Sports Facilities Auth	Illinois Sports Facilities	$38,500,000.00	Illinois State Checkbook
2021	Revenue	Decatur City Treasurer	$38,443,967.01	Illinois State Checkbook
2020	State Board Of Education	Alton Comm Unit School Dist	$38,442,644.04	Illinois State Checkbook
2022	Revenue	Evanston Finance Director	$38,442,252.73	Illinois State Checkbook
2020	Revenue	Mount Prospect Village Treasur	$38,413,281.85	Illinois State Checkbook
2020	Revenue	Orland Park Village Treasurer	$38,340,834.36	Illinois State Checkbook
2019	Revenue	Skokie Village Treasurer	$38,320,616.17	Illinois State Checkbook
2022	State Board Of Education	County Of Cook School Dist 98	$38,302,095.48	Illinois State Checkbook
2021	Revenue	Mchenry County Treasurer	$38,217,652.53	Illinois State Checkbook
2019	Il State Toll Highway Auth	William Charles Constrctn Llc	$38,189,681.25	Illinois State Checkbook
2019	Transportation	The Kilian Corporation	$38,078,058.02	Illinois State Checkbook
2021	Transportation	Civil Constructors Inc Of Il	$38,037,738.00	Illinois State Checkbook
2020	Revenue	Skokie Village Treasurer	$38,011,220.00	Illinois State Checkbook
2019	Revenue	Orland Park Village Treasurer	$37,979,122.73	Illinois State Checkbook
2021	Transportation	Rush Truck Ctrs Of	$37,902,625.65	Illinois State Checkbook
2019	State Board Of Education	Dekalb Community Unit School	$37,846,620.40	Illinois State Checkbook
2017	Transportation	William Charles Constrctn Llc	$37,844,992.39	Illinois State Checkbook
2017	Healthcare & Family Services	St Johns Hospital Sisters Of	$37,800,899.69	Illinois State Checkbook
2018	Healthcare & Family Services	Advocate Northside	$37,773,178.81	Illinois State Checkbook
2017	Environmental Protect Agency	Illinois Envrnmntl Prot Agency	$37,640,420.00	Illinois State Checkbook
2018	Environmental Protect Agency	City Of Joliet	$37,630,938.94	Illinois State Checkbook
2019	Il State Toll Highway Auth	Fh Paschen S N Nielsen &	$37,607,002.73	Illinois State Checkbook
2020	Il Emergency Management Agcy	Chicago City Of	$37,584,101.70	Illinois State Checkbook
2021	Transportation	Lake County	$37,559,483.94	Illinois State Checkbook
2018	Healthcare & Family Services	Northshore University Health	$37,528,061.16	Illinois State Checkbook
2022	Lump Sums And Other Purposes	Healthcare & Family Services	$37,485,228.81	Illinois State Checkbook
2018	State Board Of Education	North Chicago School District	$37,473,280.19	Illinois State Checkbook
2022	Il State Toll Highway Auth	Dunnet Bay Construction Co	$37,459,187.35	Illinois State Checkbook
2021	Healthcare & Family Services	Hoosier Care Inc	$37,443,132.21	Illinois State Checkbook
2022	State Board Of Education	Board Of Education S D 100	$37,361,773.43	Illinois State Checkbook
2020	State Board Of Education	Collinsville Community Unit	$37,360,211.20	Illinois State Checkbook
2022	Revenue	Elk Grove Village Treasurer	$37,338,713.49	Illinois State Checkbook
2020	Healthcare & Family Services	Deloitte Consulting Llp	$37,281,077.11	Illinois State Checkbook
2018	Revenue	Illinois Housing Dev Authority	$37,276,345.61	Illinois State Checkbook
2022	Healthcare & Family Services	Hoosier Care Inc	$37,238,108.30	Illinois State Checkbook
2019	Revenue	Mount Prospect Village Treasur	$37,234,007.96	Illinois State Checkbook
2021	Revenue	Glenview Village Treasurer	$37,225,136.89	Illinois State Checkbook
2017	State Board Of Education	Cahokia Comm School Dist 187	$37,163,516.94	Illinois State Checkbook
2017	Transportation	R W Dunteman Company	$37,150,105.96	Illinois State Checkbook
2022	Healthcare & Family Services	Dentaquest Group Inc	$37,131,037.22	Illinois State Checkbook
2017	Revenue	Orland Park Village Treasurer	$37,097,581.68	Illinois State Checkbook
2021	State Board Of Education	Champaign Comm Schl Dist No 4	$37,087,238.65	Illinois State Checkbook
2021	State Board Of Education	Huntley Community School	$37,053,397.22	Illinois State Checkbook
2021	State Board Of Education	West Chicago School Dist 33	$36,996,571.36	Illinois State Checkbook
2017	State Board Of Education	Maine Twp School Treasurer	$36,974,031.38	Illinois State Checkbook
2022	State Board Of Education	Belleville School District 118	$36,906,893.09	Illinois State Checkbook
2019	University Of Illinois	University Of Illinois	$36,852,784.91	Illinois State Checkbook