Year	Employer	Vendor Name	Amount	Source
2019	Il State Toll Highway Auth	Chastain & Associates Llc	$9,549,231.61	Illinois State Checkbook
2025	Commerce And Economic Opportun	Richland Community College	$9,548,767.55	Illinois State Checkbook
2016	Healthcare & Family Services	Activstyle Inc	$9,547,308.66	Illinois State Checkbook
2024	State Board Of Education	Pikeland Cmnty Schl Dist No 10	$9,545,804.34	Illinois State Checkbook
2018	State Board Of Education	Ofallon Community Consolidated	$9,543,815.51	Illinois State Checkbook
2023	Human Services	St Mary Of Providence School	$9,540,805.52	Illinois State Checkbook
2019	State Board Of Education	Lake Villa Comm Consolidated	$9,540,677.09	Illinois State Checkbook
2021	Human Services	Mcdermott Center	$9,537,709.72	Illinois State Checkbook
2024	Revenue	Highland City Treasurer	$9,537,139.25	Illinois State Checkbook
2023	Revenue	Springfield General Fund City	$9,536,590.16	Illinois State Checkbook
2024	State Board Of Education	North Mac Cusd 34	$9,535,896.90	Illinois State Checkbook
2017	State Board Of Education	Southland College Prep	$9,535,811.45	Illinois State Checkbook
2024	Human Services	Association For Individual Dev	$9,530,630.01	Illinois State Checkbook
2025	Transportation	G M Sipes Construction Inc	$9,530,493.65	Illinois State Checkbook
2020	Transportation	A Lamp Concrete Contractor Inc	$9,529,927.57	Illinois State Checkbook
2021	State Board Of Education	Bradley Bourbonnais Community	$9,529,690.92	Illinois State Checkbook
2023	State Board Of Education	Lockport Township High School	$9,526,674.50	Illinois State Checkbook
2023	Healthcare & Family Services	Family Planning Associates	$9,525,354.77	Illinois State Checkbook
2020	Healthcare & Family Services	Saint Anthony Medical Center	$9,525,264.76	Illinois State Checkbook
2020	Healthcare & Family Services	Rehabtech Supply Corporation	$9,524,243.21	Illinois State Checkbook
2019	Il Community College Board	Joliet Junior College Icc Dist	$9,523,745.72	Illinois State Checkbook
2017	Revenue	Batavia Village Treasurer	$9,521,933.82	Illinois State Checkbook
2016	State Board Of Education	Woodland Comm Consolidated	$9,521,318.26	Illinois State Checkbook
2024	Corrections	Direct Energy Marketing Inc	$9,520,949.27	Illinois State Checkbook
2022	State Board Of Education	County Of Winnebago Schl Dist	$9,520,401.54	Illinois State Checkbook
2021	Revenue	North Rivreside Village Treas	$9,516,174.87	Illinois State Checkbook
2023	Il State Toll Highway Auth	Sdi Presence Llc	$9,513,619.06	Illinois State Checkbook
2023	Central Management	Universal Protection Svc Lp	$9,512,030.92	Illinois State Checkbook
2025	State Board Of Education	Salem Elementary School	$9,509,053.49	Illinois State Checkbook
2022	State Board Of Education	Lincoln Elementary School	$9,506,270.85	Illinois State Checkbook
2021	Revenue	Batavia Village Treasurer	$9,504,900.99	Illinois State Checkbook
2024	State Board Of Education	Southwestern Community	$9,503,969.62	Illinois State Checkbook
2017	Human Services	Cornerstone Services	$9,502,405.38	Illinois State Checkbook
2024	State Board Of Education	Bensenville Elementary Schl	$9,500,713.27	Illinois State Checkbook
2021	Revenue	Morris City Treasurer	$9,497,919.00	Illinois State Checkbook
2025	Revenue	Springfield Unit Sch 186	$9,495,313.15	Illinois State Checkbook
2022	Supreme Court	Lake County	$9,495,097.30	Illinois State Checkbook
2017	Il Community College Board	Community College Dist 502	$9,494,419.58	Illinois State Checkbook
2025	Il Community College Board	Heartland Community College 54	$9,492,185.40	Illinois State Checkbook
2020	Corrections	Constellation New Energy Inc	$9,490,172.61	Illinois State Checkbook
2018	Human Services	Community Alternative Unltd	$9,490,089.64	Illinois State Checkbook
2022	Revenue	Bloom Twp Hs 206	$9,489,857.38	Illinois State Checkbook
2017	State Board Of Education	Beardstown Community Unit	$9,489,491.26	Illinois State Checkbook
2024	Illinois Gaming Board	Chicago City Of	$9,489,292.53	Illinois State Checkbook
2022	Revenue	Crest Hill City Treasurer	$9,488,299.41	Illinois State Checkbook
2025	State Board Of Education	Community High School Dist 99	$9,487,223.57	Illinois State Checkbook
2025	Revenue	Channahon Village Treasurer	$9,487,082.62	Illinois State Checkbook
2024	Revenue	Aurora City	$9,487,053.87	Illinois State Checkbook
2024	Healthcare & Family Services	Protestant Memorial Med Ctr	$9,486,471.97	Illinois State Checkbook
2020	Public Health	Glaxosmithkline	$9,485,714.40	Illinois State Checkbook
2019	Revenue	Village Of Homer Glen	$9,482,995.05	Illinois State Checkbook
2021	State Board Of Education	Kirby School Dist 140	$9,481,795.83	Illinois State Checkbook
2023	Revenue	Lake Forest City Treasurer	$9,480,598.83	Illinois State Checkbook
2024	Secretary Of State	Morpho Usa Inc	$9,479,564.15	Illinois State Checkbook
2021	State Board Of Education	Community Unit School Dist	$9,478,315.89	Illinois State Checkbook
2023	State Board Of Education	New Lenox School District 122	$9,478,229.46	Illinois State Checkbook
2022	Transportation	Otto Baum & Company Inc	$9,475,656.73	Illinois State Checkbook
2023	Transportation	St Clair County Of	$9,475,131.81	Illinois State Checkbook
2022	State Board Of Education	Salem Elementary School	$9,473,587.80	Illinois State Checkbook
2019	Revenue	Valley View Cusd 365U	$9,472,173.29	Illinois State Checkbook
2019	State Board Of Education	Gillespie Community Unit No 7	$9,469,646.36	Illinois State Checkbook
2025	State Board Of Education	Hononegah High School	$9,465,291.42	Illinois State Checkbook
2025	Healthcare & Family Services	Ottawa Regional Hospital &	$9,465,120.90	Illinois State Checkbook
2019	Transportation	Herlihy Mid Continent Company	$9,465,091.79	Illinois State Checkbook
2017	Revenue	Rock Island County Treasurer	$9,464,917.79	Illinois State Checkbook
2025	Healthcare & Family Services	Peoria Hospitals Mobile	$9,464,330.72	Illinois State Checkbook
2025	Revenue	Taylorville City Treasurer	$9,463,093.67	Illinois State Checkbook
2020	Human Services	Mcdermott Center	$9,462,113.06	Illinois State Checkbook
2018	Comptroller	Employment Security Dept Of	$9,461,452.13	Illinois State Checkbook
2025	Innovation And Technology	C A Inc	$9,456,464.98	Illinois State Checkbook
2021	Transportation	Ihc Construction Companies Llc	$9,455,929.29	Illinois State Checkbook
2021	State Board Of Education	Ofallon Township High School	$9,455,491.99	Illinois State Checkbook
2025	State Board Of Education	Manhattan School District No 1	$9,454,812.02	Illinois State Checkbook
2024	Commerce And Economic Opportun	Strada Communications Llc	$9,449,377.73	Illinois State Checkbook
2025	Environmental Protect Agency	Dupage County	$9,449,092.67	Illinois State Checkbook
2024	Il Community College Board	Heartland Community College 54	$9,447,981.66	Illinois State Checkbook
2024	Public Health	Illinois Public Health	$9,446,540.01	Illinois State Checkbook
2016	Revenue	Glen Ellyn Village Treasurer	$9,445,452.54	Illinois State Checkbook
2020	Il Student Assistance Comm	National-Louis University	$9,444,301.00	Illinois State Checkbook
2020	Il State Toll Highway Auth	Buckeye Partners Lp	$9,440,824.29	Illinois State Checkbook
2018	State Board Of Education	Eastern Illinois Area Special	$9,439,106.86	Illinois State Checkbook
2021	Commerce And Economic Opportun	Embarras River Basin Agency	$9,438,982.75	Illinois State Checkbook
2024	Commerce And Economic Opportun	Tri-County Opportunities Cncl	$9,438,089.55	Illinois State Checkbook
2018	State Board Of Education	Northern Suburban Spec Ed Dist	$9,436,216.57	Illinois State Checkbook
2019	Revenue	Batavia Village Treasurer	$9,435,776.95	Illinois State Checkbook
2025	Healthcare & Family Services	Sarah Bush Lincoln Health Ctr	$9,435,767.97	Illinois State Checkbook
2017	Transportation	Gallagher Asphalt Corporation	$9,435,574.82	Illinois State Checkbook
2022	Il Student Assistance Comm	Saint Xavier University	$9,432,880.00	Illinois State Checkbook
2024	Transportation	Greater Peoria Airport	$9,432,310.21	Illinois State Checkbook
2022	Revenue	Lemont Village Treasurer	$9,430,290.10	Illinois State Checkbook
2024	Revenue	Bourbonnais Village Treasurer	$9,426,882.07	Illinois State Checkbook
2025	Aging	Chicago Commons Association	$9,425,619.00	Illinois State Checkbook
2025	State Board Of Education	Geneseo Community Unit School	$9,424,804.33	Illinois State Checkbook
2017	State Board Of Education	Canton Union School	$9,423,954.68	Illinois State Checkbook
2023	Revenue	Granite City Of	$9,421,069.60	Illinois State Checkbook
2016	Revenue	Valley View Cusd 365U	$9,420,008.03	Illinois State Checkbook
2023	Revenue	Glen Carbon Village Treasurer	$9,419,529.72	Illinois State Checkbook
2025	Healthcare & Family Services	Riverside Medical Center	$9,418,649.43	Illinois State Checkbook
2019	Revenue	Bradley Village Treasurer	$9,417,997.64	Illinois State Checkbook
2020	Transportation	Kinney Contractors Inc	$9,416,374.94	Illinois State Checkbook