Year	Employer	Vendor Name	Amount	Source
2023	Capital Development Board	Michels Construction Inc	$15,850,934.02	Illinois State Checkbook
2019	Revenue	Urbana City Treasurer	$15,848,892.88	Illinois State Checkbook
2025	Central Management	Telus Health U S Ltd	$15,835,651.16	Illinois State Checkbook
2023	State Board Of Education	School District No 95	$15,835,037.17	Illinois State Checkbook
2019	State Board Of Education	Kewanee Community Unit School	$15,828,081.08	Illinois State Checkbook
2021	State Board Of Education	Bethalto Unit No 8	$15,827,907.55	Illinois State Checkbook
2024	Revenue	Township High School Dist 214	$15,823,332.32	Illinois State Checkbook
2023	State Board Of Education	Association For Child	$15,812,598.29	Illinois State Checkbook
2023	Revenue	Rock Island Unit Sch 41	$15,797,532.83	Illinois State Checkbook
2023	Commerce And Economic Opportun	Village Of Rosemont	$15,797,166.00	Illinois State Checkbook
2019	State Board Of Education	Oak Park School District 97	$15,795,791.58	Illinois State Checkbook
2024	Agriculture	University Of Illinois	$15,788,372.76	Illinois State Checkbook
2021	Human Services	Milestone Inc	$15,783,596.12	Illinois State Checkbook
2022	State Board Of Education	Troy Community Consolidated	$15,781,432.04	Illinois State Checkbook
2023	Revenue	Freeport City Treasurer	$15,777,814.93	Illinois State Checkbook
2022	Healthcare & Family Services	Misericordia Home	$15,777,620.52	Illinois State Checkbook
2022	Transportation	Ihc Construction Companies Llc	$15,773,876.71	Illinois State Checkbook
2025	Healthcare & Family Services	Waukegan Illinois Hosp Co Llc	$15,767,850.60	Illinois State Checkbook
2019	Revenue	Fairview Heights City Treasure	$15,767,242.87	Illinois State Checkbook
2017	State Board Of Education	Stickney Township School Treas	$15,764,034.79	Illinois State Checkbook
2021	State Board Of Education	Richland County Cusd 1	$15,762,249.16	Illinois State Checkbook
2020	Environmental Protect Agency	City Of Fairbury	$15,761,591.85	Illinois State Checkbook
2019	State Board Of Education	Rantoul City School Dist 137	$15,759,520.30	Illinois State Checkbook
2018	Revenue	Tazewell County Treasurer	$15,757,167.04	Illinois State Checkbook
2024	Il State Toll Highway Auth	Securadyne Systems Inter Llc	$15,752,979.70	Illinois State Checkbook
2024	State Board Of Education	Monmouth-Roseville Cusd 238	$15,743,829.90	Illinois State Checkbook
2018	Revenue	Hanover Park Village Treasurer	$15,741,248.15	Illinois State Checkbook
2021	Healthcare & Family Services	Swedish American Hospital Assn	$15,739,544.56	Illinois State Checkbook
2017	Illinois Gaming Board	Joliet City Treasurer	$15,736,492.95	Illinois State Checkbook
2023	Il Community College Board	Lake Land College	$15,733,966.85	Illinois State Checkbook
2022	Transportation	B & O Chicago Term Rr	$15,733,409.44	Illinois State Checkbook
2024	Revenue	Granite City Treasurer	$15,731,006.37	Illinois State Checkbook
2023	Revenue	Village Of Homer Glen	$15,730,799.49	Illinois State Checkbook
2022	State Board Of Education	Streator Elementary School	$15,727,540.01	Illinois State Checkbook
2024	Revenue	Montgomery Village Treasurer	$15,726,831.81	Illinois State Checkbook
2024	Human Services	Lutheran Social Services Of Il	$15,724,920.19	Illinois State Checkbook
2020	Revenue	Sangamon County Regional	$15,722,088.18	Illinois State Checkbook
2025	Il Student Assistance Comm	Aurora University	$15,722,001.60	Illinois State Checkbook
2018	Transportation	Lake County	$15,719,586.72	Illinois State Checkbook
2023	Revenue	Granite City Treasurer	$15,716,916.96	Illinois State Checkbook
2020	Revenue	Ofallon City Treasurer	$15,713,408.98	Illinois State Checkbook
2018	State Board Of Education	Matteson School Dist 162	$15,713,168.28	Illinois State Checkbook
2020	State Board Of Education	Leyden High School Dist No 212	$15,711,822.34	Illinois State Checkbook
2021	State Board Of Education	Mchenry Cmnty Consolidated	$15,701,797.02	Illinois State Checkbook
2020	State Board Of Education	Massac County Unit Schl Dist 1	$15,699,326.22	Illinois State Checkbook
2022	Corrections	Favorite Healthcare Staffing	$15,693,737.25	Illinois State Checkbook
2019	Revenue	Regional Office Of Education	$15,692,155.28	Illinois State Checkbook
2021	State Board Of Education	Day Care Resources	$15,691,872.38	Illinois State Checkbook
2025	Transportation	Kane County Of	$15,690,643.41	Illinois State Checkbook
2024	Il State Toll Highway Auth	Knight E A Inc	$15,687,733.32	Illinois State Checkbook
2023	Il State Toll Highway Auth	Electronic Transaction	$15,678,794.68	Illinois State Checkbook
2020	Healthcare & Family Services	Bhc Streamwood Hospital Inc	$15,669,667.93	Illinois State Checkbook
2021	Human Services	Rosecrance Incorporated	$15,667,138.72	Illinois State Checkbook
2024	Healthcare & Family Services	Maximus U S Services Inc	$15,666,808.93	Illinois State Checkbook
2017	Revenue	Plainfield Village Treasurer	$15,660,732.55	Illinois State Checkbook
2021	Transportation	Mchenry County	$15,657,343.42	Illinois State Checkbook
2024	Human Services	Start Early	$15,655,106.89	Illinois State Checkbook
2022	Revenue	Shorewood Village Treasurer	$15,654,649.12	Illinois State Checkbook
2024	Revenue	Lake Zurich Village Treasurer	$15,654,050.12	Illinois State Checkbook
2024	Revenue	Huntley Village Treasurer	$15,652,750.83	Illinois State Checkbook
2023	Il Student Assistance Comm	Western Illinois University	$15,648,992.52	Illinois State Checkbook
2023	Transportation	Ihc Construction Companies Llc	$15,646,047.26	Illinois State Checkbook
2017	Revenue	Wheeling Village Treasurer	$15,640,617.96	Illinois State Checkbook
2022	Revenue	Park Ridge City Treasurer	$15,638,341.49	Illinois State Checkbook
2023	Il Community College Board	College Of Lake County	$15,636,325.73	Illinois State Checkbook
2021	State Board Of Education	Ncs Pearson Inc	$15,633,463.00	Illinois State Checkbook
2021	Il State Toll Highway Auth	Omega & Associates Inc	$15,630,912.80	Illinois State Checkbook
2024	Transportation	Keeley & Sons Inc	$15,626,646.76	Illinois State Checkbook
2023	Transportation	Mchenry County	$15,624,475.15	Illinois State Checkbook
2020	Revenue	Westmont Village Treasurer	$15,623,469.48	Illinois State Checkbook
2025	State Board Of Education	Monmouth-Roseville Cusd 238	$15,618,742.27	Illinois State Checkbook
2023	Revenue	Niles Twp Hs 219	$15,614,722.35	Illinois State Checkbook
2021	Il State Toll Highway Auth	Martam Const Inc	$15,604,855.72	Illinois State Checkbook
2023	Healthcare & Family Services	Southern Illinois Hospital	$15,603,409.62	Illinois State Checkbook
2025	Capital Development Board	Venice Community Unit School	$15,596,000.00	Illinois State Checkbook
2025	State Board Of Education	County Of Christian	$15,586,406.26	Illinois State Checkbook
2023	Healthcare & Family Services	Misericordia Home	$15,585,781.75	Illinois State Checkbook
2018	Corrections	Cdw Llc	$15,583,904.68	Illinois State Checkbook
2018	Healthcare & Family Services	Good Samaritan Regional Hlth	$15,583,149.51	Illinois State Checkbook
2019	Aging	Medical Gear Llc	$15,580,596.61	Illinois State Checkbook
2021	Innovation And Technology	Presidio Holdings Inc	$15,580,195.75	Illinois State Checkbook
2022	State Police	Dupage County	$15,578,552.42	Illinois State Checkbook
2023	Transportation	State Police Dept Of	$15,576,031.75	Illinois State Checkbook
2025	Revenue	Woodstock City Treasurer	$15,573,753.99	Illinois State Checkbook
2017	Transportation	Martam Const Inc	$15,571,209.58	Illinois State Checkbook
2020	Healthcare & Family Services	Misericordia Home	$15,556,400.87	Illinois State Checkbook
2018	Transportation	Reyhan Bros Inc	$15,554,608.76	Illinois State Checkbook
2025	Il Community College Board	Lake Land College	$15,551,182.78	Illinois State Checkbook
2024	Innovation And Technology	Mckinsey & Company Inc	$15,550,000.00	Illinois State Checkbook
2021	Revenue	Mchenry City Treasurer	$15,549,434.58	Illinois State Checkbook
2019	Human Services	Beverly Farm Foundation	$15,549,405.61	Illinois State Checkbook
2025	Healthcare & Family Services	City Of Rockford	$15,535,359.79	Illinois State Checkbook
2018	Revenue	Romeoville Village Treasurer	$15,525,920.12	Illinois State Checkbook
2022	Commerce And Economic Opportun	Tri-County Opportunities Cncl	$15,515,306.02	Illinois State Checkbook
2020	Human Services	Milestone Inc	$15,512,817.00	Illinois State Checkbook
2025	Revenue	Sycamore City Treasurer	$15,510,860.58	Illinois State Checkbook
2025	Healthcare & Family Services	Saint Anthony Hospital	$15,510,587.99	Illinois State Checkbook
2017	State Board Of Education	Belleville Township High	$15,508,457.93	Illinois State Checkbook
2022	Healthcare & Family Services	Alden Village Health Facility	$15,508,041.80	Illinois State Checkbook
2018	State Board Of Education	Day Care Resources	$15,504,563.04	Illinois State Checkbook