Year	Employer	Vendor Name	Amount	Source
2019	State Univ Retirement Sys	State Univ Retirement System	$215,000,000.00	Illinois State Checkbook
2020	State Univ Retirement Sys	State Univ Retirement System	$215,000,000.00	Illinois State Checkbook
2022	Il Student Assistance Comm	The Northern Trust Company	$213,328,000.00	Illinois State Checkbook
2021	Revenue	Chicago City Of	$213,211,610.46	Illinois State Checkbook
2019	Metro Pier & Exposition Auth	Metropolitan Pier & Exposition	$213,194,970.64	Illinois State Checkbook
2022	Transportation	Cook County	$212,957,734.55	Illinois State Checkbook
2018	State Board Of Education	School District U-46	$212,095,964.38	Illinois State Checkbook
2022	Commerce And Economic Opportun	Community & Ecnmc Dev Assn	$211,710,058.21	Illinois State Checkbook
2023	Transportation	Cook County	$209,196,961.11	Illinois State Checkbook
2021	Human Services	Illinois Network Of Child Care	$209,085,214.63	Illinois State Checkbook
2023	Metro Pier & Exposition Auth	Metropolitan Pier & Exposition	$208,979,275.47	Illinois State Checkbook
2017	Revenue	Chicago Board Of Education	$205,417,469.67	Illinois State Checkbook
2020	State Board Of Education	Thornton Twp School Trustees	$205,407,597.41	Illinois State Checkbook
2020	Central Management	Treasurer Office Of	$204,969,365.84	Illinois State Checkbook
2022	State Board Of Education	Thornton Twp School Trustees	$204,881,782.85	Illinois State Checkbook
2020	Metro Pier & Exposition Auth	Metropolitan Pier & Exposition	$204,578,953.63	Illinois State Checkbook
2019	State Board Of Education	School District 205 Board Of	$204,154,248.38	Illinois State Checkbook
2023	State Board Of Education	Proviso Township	$203,960,236.66	Illinois State Checkbook
2020	Revenue	Chicago Board Of Education	$203,540,465.62	Illinois State Checkbook
2018	State Board Of Education	Public School Teachers Pension	$202,858,333.36	Illinois State Checkbook
2019	Teachers' Pens & Retire Sys, C	Public School Teachers Pension	$201,072,000.00	Illinois State Checkbook
2017	State Board Of Education	Bloom Twp School Treasurer	$200,301,323.64	Illinois State Checkbook
2021	Healthcare & Family Services	Hfs Healthcare Provider Relief	$200,000,000.00	Illinois State Checkbook
2022	Corrections	Wexford Health Sources Inc	$199,385,977.10	Illinois State Checkbook
2023	State Board Of Education	Community Unit School Dist 60	$199,257,542.63	Illinois State Checkbook
2022	Aging	Addus Healthcare Inc	$198,848,794.85	Illinois State Checkbook
2017	Environmental Protect Agency	Metropolitan Water Reclamation	$198,745,539.49	Illinois State Checkbook
2017	Healthcare & Family Services	N L Merger Sub Inc	$198,513,835.33	Illinois State Checkbook
2021	State Board Of Education	Thornton Twp School Trustees	$198,283,733.47	Illinois State Checkbook
2021	Aging	Addus Healthcare Inc	$197,820,306.40	Illinois State Checkbook
2017	Metro Pier & Exposition Auth	Metropolitan Pier & Exposition	$194,897,560.46	Illinois State Checkbook
2020	Corrections	Wexford Health Sources Inc	$193,363,814.09	Illinois State Checkbook
2020	Transportation	Cook County	$192,656,183.23	Illinois State Checkbook
2023	State Board Of Education	Worth Twp Trustees Of Schools	$192,575,885.45	Illinois State Checkbook
2019	Aging	Hah Holdings Llc	$192,133,994.52	Illinois State Checkbook
2023	Revenue	Dupage County Treasurer	$192,045,186.51	Illinois State Checkbook
2018	Aging	Hah Holdings Llc	$190,484,257.92	Illinois State Checkbook
2021	Transportation	Chicago City Treasurer	$190,457,478.14	Illinois State Checkbook
2018	State Board Of Education	School District 205 Board Of	$190,366,266.03	Illinois State Checkbook
2019	Environmental Protect Agency	Chicago City Of	$187,833,867.01	Illinois State Checkbook
2023	State Board Of Education	Township 36 North Range 13 E	$187,174,216.10	Illinois State Checkbook
2019	Revenue	Chicago Board Of Education	$185,944,462.09	Illinois State Checkbook
2022	Transportation	United Contractors Midwest Inc	$185,209,590.47	Illinois State Checkbook
2020	Aging	Addus Healthcare Inc	$185,021,744.42	Illinois State Checkbook
2021	Corrections	Wexford Health Sources Inc	$184,479,831.02	Illinois State Checkbook
2019	Central Management	Treasurer Office Of	$181,196,433.64	Illinois State Checkbook
2021	State Board Of Education	Community Unit School Dist 60	$180,546,192.47	Illinois State Checkbook
2019	Healthcare & Family Services	University Of Illinois	$176,797,743.42	Illinois State Checkbook
2019	State Board Of Education	Thornton Twp School Trustees	$176,151,252.42	Illinois State Checkbook
2022	Revenue	Dupage County Treasurer	$176,029,207.85	Illinois State Checkbook
2020	State Board Of Education	Community Unit School Dist 60	$173,910,138.99	Illinois State Checkbook
2022	State Lottery	Camelot Global Svcs Inc	$173,624,619.12	Illinois State Checkbook
2017	Environmental Protect Agency	Chicago City Of	$173,567,329.78	Illinois State Checkbook
2022	Comptroller	Teachers Retirement System	$172,986,596.02	Illinois State Checkbook
2022	State Board Of Education	Proviso Township	$172,922,502.00	Illinois State Checkbook
2019	State Lottery	Camelot Global Svcs Inc	$172,904,462.48	Illinois State Checkbook
2018	Revenue	Chicago Board Of Education	$171,881,671.19	Illinois State Checkbook
2023	Il State Toll Highway Auth	Walsh Construction Co Ii Llc	$170,580,423.28	Illinois State Checkbook
2018	State Board Of Education	Thornton Twp School Trustees	$170,545,932.57	Illinois State Checkbook
2017	Revenue	Chicago City Of	$170,018,344.55	Illinois State Checkbook
2017	State Univ Retirement Sys	State Univ Retirement System	$170,000,000.00	Illinois State Checkbook
2017	Central Management	Treasurer Office Of	$169,903,688.53	Illinois State Checkbook
2017	State Board Of Education	School District U-46	$169,623,508.24	Illinois State Checkbook
2022	State Board Of Education	Worth Twp Trustees Of Schools	$168,553,271.95	Illinois State Checkbook
2020	Revenue	Chicago City Of	$168,095,307.97	Illinois State Checkbook
2021	State Board Of Education	Proviso Township	$167,379,197.99	Illinois State Checkbook
2022	State Board Of Education	Township 36 North Range 13 E	$167,137,474.55	Illinois State Checkbook
2018	Central Management	Treasurer Office Of	$166,406,740.66	Illinois State Checkbook
2023	Healthcare & Family Services	Humana Health Plan Inc	$165,879,487.03	Illinois State Checkbook
2017	State Board Of Education	School District 205 Board Of	$165,740,419.90	Illinois State Checkbook
2022	State Board Of Education	County Of Cook School Dist 99	$165,070,436.87	Illinois State Checkbook
2020	Transportation	Chicago City Of	$164,781,659.95	Illinois State Checkbook
2023	State Board Of Education	County Of Cook School Dist 99	$163,648,412.55	Illinois State Checkbook
2020	Transportation	Chicago City Treasurer	$163,223,059.65	Illinois State Checkbook
2022	Il State Toll Highway Auth	Fh Paschen S N Nielsen &	$161,407,958.01	Illinois State Checkbook
2018	Environmental Protect Agency	Chicago City Of	$161,097,183.70	Illinois State Checkbook
2018	Metro Pier & Exposition Auth	Metropolitan Pier & Exposition	$161,002,608.72	Illinois State Checkbook
2018	Healthcare & Family Services	Walgreens Company	$157,873,146.36	Illinois State Checkbook
2017	Aging	Addus Healthcare Inc	$157,624,444.22	Illinois State Checkbook
2022	Il Emergency Management Agcy	State Of Illinois Emergency	$157,527,995.00	Illinois State Checkbook
2020	Il State Toll Highway Auth	Union Pacific Railroad Company	$156,450,000.00	Illinois State Checkbook
2023	State Board Of Education	Plainfield School Dist 202	$155,723,072.22	Illinois State Checkbook
2023	Healthcare & Family Services	Advocate Health And Hospitals	$155,102,520.59	Illinois State Checkbook
2019	Revenue	Chicago City Of	$153,563,525.12	Illinois State Checkbook
2019	State Board Of Education	Community Unit School Dist 60	$153,177,184.25	Illinois State Checkbook
2023	Il Student Assistance Comm	University Of Illinois	$152,788,926.72	Illinois State Checkbook
2018	Aging	Addus Healthcare Inc	$152,743,196.47	Illinois State Checkbook
2021	Metro Pier & Exposition Auth	Metropolitan Pier & Exposition	$152,458,402.16	Illinois State Checkbook
2019	Treasurer	Zb National Association	$152,163,704.70	Illinois State Checkbook
2023	Revenue	Chicago Park District	$150,893,987.66	Illinois State Checkbook
2018	Environmental Protect Agency	Metropolitan Water Reclamation	$150,498,948.88	Illinois State Checkbook
2020	State Board Of Education	Proviso Township	$150,478,225.39	Illinois State Checkbook
2023	Commerce And Economic Opportun	National Community	$150,225,745.64	Illinois State Checkbook
2019	State Lottery	Treasurer Office Of	$149,737,203.00	Illinois State Checkbook
2018	Healthcare & Family Services	Advocate Health And Hospitals	$149,318,165.75	Illinois State Checkbook
2021	State Board Of Education	Worth Twp Trustees Of Schools	$148,250,534.01	Illinois State Checkbook
2017	Transportation	United Contractors Midwest Inc	$147,602,287.91	Illinois State Checkbook
2017	State Board Of Education	Thornton Twp School Trustees	$147,231,630.55	Illinois State Checkbook
2018	State Board Of Education	Community Unit School Dist 60	$147,120,299.93	Illinois State Checkbook
2023	State Lottery	Camelot Global Svcs Inc	$146,998,981.14	Illinois State Checkbook