Year	Employer	Vendor Name	Amount	Source
2021	Revenue	Calumet City Treasurer	$16,289,481.13	Illinois State Checkbook
2025	Healthcare & Family Services	Marklund Childrens Home Inc	$16,287,297.31	Illinois State Checkbook
2018	State Board Of Education	Community High Schl Dist 155	$16,282,373.23	Illinois State Checkbook
2025	State Board Of Education	Ball Chatham School Dist 5	$16,282,218.36	Illinois State Checkbook
2017	Revenue	Fairview Heights City Treasure	$16,280,472.49	Illinois State Checkbook
2018	Central Management	Delta Dental Of Illinois	$16,275,230.68	Illinois State Checkbook
2023	Revenue	Morton Grove Village Treasurer	$16,275,203.52	Illinois State Checkbook
2018	Revenue	Plainfield Village Treasurer	$16,274,678.69	Illinois State Checkbook
2017	State Board Of Education	Concept Schools Inc	$16,272,342.87	Illinois State Checkbook
2017	Corrections	M J Kellner Company Inc	$16,267,336.74	Illinois State Checkbook
2025	Revenue	Macon County Treasurer General	$16,264,554.53	Illinois State Checkbook
2019	Healthcare & Family Services	Vhs Of Illinois Inc	$16,263,431.62	Illinois State Checkbook
2016	Healthcare & Family Services	Rml Health Providers Ltd Ptshp	$16,263,201.74	Illinois State Checkbook
2022	Human Services	Envision Unlimited	$16,262,732.21	Illinois State Checkbook
2025	Healthcare & Family Services	Alden Village North Inc	$16,259,121.52	Illinois State Checkbook
2025	Il Community College Board	Rock Valley College	$16,251,878.30	Illinois State Checkbook
2025	State Board Of Education	Association For Child	$16,251,542.66	Illinois State Checkbook
2016	State Board Of Education	Huntley Community School	$16,250,552.10	Illinois State Checkbook
2025	Transportation	Berger Excavating Contractors	$16,248,716.49	Illinois State Checkbook
2016	Human Services	Illinois Network Of Child Care	$16,248,427.27	Illinois State Checkbook
2025	Revenue	Madison County Of	$16,247,162.14	Illinois State Checkbook
2021	Revenue	Peoria Unit Sch 150	$16,245,902.99	Illinois State Checkbook
2020	Revenue	St Clair County Treasurer	$16,243,305.93	Illinois State Checkbook
2025	State Board Of Education	Illinois State University	$16,239,887.05	Illinois State Checkbook
2023	Commerce And Economic Opportun	Chicago Cnvntn Tourism Bur Inc	$16,228,500.00	Illinois State Checkbook
2022	Transportation	Peter Baker & Son Co	$16,223,957.62	Illinois State Checkbook
2017	State Board Of Education	Yorkville Comm Unit Dist 115	$16,222,831.83	Illinois State Checkbook
2020	State Board Of Education	Harrisburg Community Unit	$16,202,860.90	Illinois State Checkbook
2021	Natural Resources	University Of Illinois	$16,201,540.63	Illinois State Checkbook
2017	State Board Of Education	Day Care Resources	$16,198,073.80	Illinois State Checkbook
2021	Environmental Protect Agency	City Of Pontiac Il	$16,190,417.24	Illinois State Checkbook
2024	Healthcare & Family Services	St Louis Childrens Hospital	$16,187,110.19	Illinois State Checkbook
2025	Human Services	Greater Chicago Food Dpstry	$16,185,802.70	Illinois State Checkbook
2018	Healthcare & Family Services	Uhs Of Hartgrove Inc	$16,185,177.03	Illinois State Checkbook
2022	Revenue	Alton City Treasurer	$16,177,006.55	Illinois State Checkbook
2024	Revenue	Bartlett Village Treasurer	$16,175,667.99	Illinois State Checkbook
2019	State Board Of Education	Plano C U School	$16,172,973.87	Illinois State Checkbook
2018	Healthcare & Family Services	Loretto Hospital	$16,168,316.90	Illinois State Checkbook
2017	Healthcare & Family Services	Loretto Hospital	$16,161,030.06	Illinois State Checkbook
2025	Healthcare & Family Services	Holy Cross Hospital	$16,157,614.98	Illinois State Checkbook
2025	Human Services	Illinois Dept Of Healthcare	$16,154,491.22	Illinois State Checkbook
2020	Revenue	Algonquin Village Treasurer	$16,152,814.49	Illinois State Checkbook
2024	Revenue	Monee Village Treasurer	$16,152,194.93	Illinois State Checkbook
2016	Transportation	Dupage County Of	$16,149,379.28	Illinois State Checkbook
2021	Central Management	Aetna Life Insurance Co	$16,147,749.09	Illinois State Checkbook
2023	Revenue	Moline Unit Sch 40	$16,137,630.72	Illinois State Checkbook
2017	Revenue	International Fuel Tax Assn	$16,136,018.41	Illinois State Checkbook
2020	Human Services	Rosecrance Incorporated	$16,128,987.21	Illinois State Checkbook
2021	State Board Of Education	Leyden High School Dist No 212	$16,120,595.19	Illinois State Checkbook
2023	Revenue	Norridge Village Treasurer	$16,116,985.41	Illinois State Checkbook
2021	Comptroller	Revenue Dept Of	$16,104,479.25	Illinois State Checkbook
2025	State Board Of Education	Antioch Community High School	$16,103,380.86	Illinois State Checkbook
2025	Revenue	Peru City Treasurer	$16,102,337.61	Illinois State Checkbook
2018	Revenue	Algonquin Village Treasurer	$16,100,490.77	Illinois State Checkbook
2023	Public Health	W W Grainger Inc	$16,100,051.62	Illinois State Checkbook
2016	Revenue	Champaign County Treasurer	$16,093,123.37	Illinois State Checkbook
2019	State Board Of Education	Board Of Education	$16,089,691.53	Illinois State Checkbook
2020	Central Management	Cvs Pharmacy Inc	$16,084,958.21	Illinois State Checkbook
2022	Il Student Assistance Comm	Pennsylvania Higher Education	$16,084,776.53	Illinois State Checkbook
2024	State Board Of Education	Ball Chatham School Dist 5	$16,083,782.16	Illinois State Checkbook
2025	Revenue	Frankfort Village Treasurer	$16,078,064.53	Illinois State Checkbook
2025	Transportation	Compass Minerals America Inc	$16,075,073.07	Illinois State Checkbook
2019	Revenue	St Clair County Treasurer	$16,072,550.07	Illinois State Checkbook
2018	State Board Of Education	Oak Park School District 97	$16,068,453.43	Illinois State Checkbook
2025	Revenue	Glen Ellyn Village Treasurer	$16,066,717.30	Illinois State Checkbook
2024	State Board Of Education	United Township High School	$16,064,941.50	Illinois State Checkbook
2024	State Board Of Education	Villa Park School Dist 45	$16,063,826.32	Illinois State Checkbook
2023	Employment Security	Employment Security Dept Of	$16,060,592.31	Illinois State Checkbook
2017	State Board Of Education	Special Ed Dist Of Lake County	$16,055,780.53	Illinois State Checkbook
2017	Human Services	Beverly Farm Foundation	$16,055,622.35	Illinois State Checkbook
2019	State Board Of Education	Matteson School Dist 162	$16,050,914.38	Illinois State Checkbook
2016	Revenue	Glendale Heights Vlg Treasurer	$16,050,587.11	Illinois State Checkbook
2018	State Board Of Education	Board Of Education	$16,047,364.27	Illinois State Checkbook
2025	Innovation And Technology	Divihn Integration Inc	$16,043,816.82	Illinois State Checkbook
2024	Il Student Assistance Comm	Columbia College	$16,036,440.00	Illinois State Checkbook
2018	Il State Toll Highway Auth	Aecom Technical Services Inc	$16,031,017.54	Illinois State Checkbook
2024	Illinois Gaming Board	Joliet City Treasurer	$16,028,429.02	Illinois State Checkbook
2019	State Board Of Education	County Of Dupage School Dist 4	$16,027,307.29	Illinois State Checkbook
2022	State Board Of Education	Canton Union School	$16,025,752.02	Illinois State Checkbook
2023	Human Services	Service Inc Of Illinois	$16,024,265.74	Illinois State Checkbook
2023	State Board Of Education	Centralia Cusd 135	$16,021,002.04	Illinois State Checkbook
2016	Revenue	Marion City Treasurer	$16,020,335.83	Illinois State Checkbook
2022	Revenue	Geneva City Treasurer	$16,018,700.02	Illinois State Checkbook
2023	Capital Development Board	S M Wilson & Co	$16,013,423.21	Illinois State Checkbook
2017	Revenue	Algonquin Village Treasurer	$16,013,345.09	Illinois State Checkbook
2023	Transportation	White Construction	$16,007,987.99	Illinois State Checkbook
2018	Transportation	R W Dunteman Company	$16,002,833.30	Illinois State Checkbook
2017	Central Management	Communications Revolving Fund	$16,000,000.00	Illinois State Checkbook
2018	Revenue	Fairview Heights City Treasure	$15,998,327.12	Illinois State Checkbook
2023	Human Services	Liberty Healthcare Corporation	$15,993,047.72	Illinois State Checkbook
2024	Revenue	Peoria City	$15,981,604.15	Illinois State Checkbook
2024	Revenue	Macon County Treasurer General	$15,974,772.02	Illinois State Checkbook
2017	Healthcare & Family Services	Rml Health Providers Ltd Ptshp	$15,972,502.91	Illinois State Checkbook
2016	Il Community College Board	Board Of Ttees Comm Coll Dist	$15,972,177.37	Illinois State Checkbook
2025	Commerce And Economic Opportun	Rockford City Of	$15,971,914.98	Illinois State Checkbook
2021	State Board Of Education	Beach Park Consolidated Schl	$15,967,896.00	Illinois State Checkbook
2018	Healthcare & Family Services	Advocate Health Care Network	$15,961,901.26	Illinois State Checkbook
2022	State Board Of Education	Bond County Community Unit	$15,960,195.42	Illinois State Checkbook
2023	State Board Of Education	Southland College Prep Charter	$15,959,413.94	Illinois State Checkbook
2019	State Board Of Education	Bloomington Public Schools	$15,957,226.43	Illinois State Checkbook