| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2018 |
University Of Connecticut |
Whiting-Turner Contracting Co |
$28,442,097.72 |
Connecticut State Checkbook |
| 2020 |
Dept. Of Transportation |
Middlesex Corporation |
$28,407,259.48 |
Connecticut State Checkbook |
| 2018 |
Office Of Policy & Management |
Waterbury Town Treasurer |
$28,391,071.60 |
Connecticut State Checkbook |
| 2022 |
Department Of Development Serv |
Rms Development Inc |
$28,232,054.17 |
Connecticut State Checkbook |
| 2022 |
Capital Reg Dev Authority |
Capital Region Development Authority |
$28,180,736.63 |
Connecticut State Checkbook |
| 2018 |
State Department Of Education |
Town Of Middletown |
$28,149,942.38 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Correction |
Diamond Pharmacy Services |
$28,134,961.10 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
O & G Industries Inc |
$28,106,287.44 |
Connecticut State Checkbook |
| 2021 |
Csu - Eastern |
Eastern Connecticut State University |
$28,000,000.00 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Children And Families |
Wheeler Clinic Inc |
$27,971,440.00 |
Connecticut State Checkbook |
| 2018 |
Department Of Correction |
Dept Of Administrative Services |
$27,900,197.08 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
City Of Ansonia Town Treasurer |
$27,894,728.99 |
Connecticut State Checkbook |
| 2020 |
Csu - Western |
Western Connecticut State University |
$27,864,000.00 |
Connecticut State Checkbook |
| 2021 |
Dept Of Administrative Svcs |
Kbe Building Corporation |
$27,761,533.19 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Social Services |
Gainwell Technologies Llc |
$27,727,545.26 |
Connecticut State Checkbook |
| 2019 |
Department Of Development Serv |
Community Residences Inc |
$27,684,685.44 |
Connecticut State Checkbook |
| 2022 |
Teachers' Retirement Board |
United Healthcare Insurance Company |
$27,655,600.12 |
Connecticut State Checkbook |
| 2018 |
Department Of Transportation |
Am Rizzo Electrical Contractors Inc |
$27,655,397.47 |
Connecticut State Checkbook |
| 2021 |
Department Of Development Serv |
Rms Development Inc |
$27,515,853.21 |
Connecticut State Checkbook |
| 2020 |
State Dept Of Education |
Town Of Wallingford Treasurer Office |
$27,475,246.16 |
Connecticut State Checkbook |
| 2020 |
Dept Of Energy & Environ Prot. |
Town Of Southington |
$27,375,323.74 |
Connecticut State Checkbook |
| 2021 |
State Dept Of Education |
Town Of Wallingford Treasurer Office |
$27,325,682.50 |
Connecticut State Checkbook |
| 2017 |
Department Of Social Services |
Enterprise Services Llc |
$27,281,851.19 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
Waters Constr Co Inc |
$27,280,606.25 |
Connecticut State Checkbook |
| 2017 |
State Department Of Education |
Town Of Wallingford Treasurer Office |
$27,255,591.61 |
Connecticut State Checkbook |
| 2023 |
Office Of Policy & Management |
City Of Stamford |
$27,145,230.68 |
Connecticut State Checkbook |
| 2019 |
State Dept Of Education |
Town Of Wallingford Treasurer Office |
$27,107,366.88 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Transportation |
Greater Hartford Transit Distrct |
$27,074,877.15 |
Connecticut State Checkbook |
| 2018 |
University Of Connecticut |
Fsd University Llc |
$27,051,631.35 |
Connecticut State Checkbook |
| 2018 |
Board Of Regents |
Eastern Connecticut State University |
$27,047,695.28 |
Connecticut State Checkbook |
| 2020 |
Mental Health & Addiction Serv |
Dept Of Social Services |
$27,033,679.27 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
Walsh Construction Company Ii Llc |
$26,934,030.98 |
Connecticut State Checkbook |
| 2022 |
Department Of Development Serv |
Mosaic |
$26,929,789.59 |
Connecticut State Checkbook |
| 2023 |
Mental Health & Addiction Serv |
Dept Of Social Services |
$26,924,515.79 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Social Services |
Gainwell Technologies Llc |
$26,904,061.79 |
Connecticut State Checkbook |
| 2022 |
Dept. Of Correction |
Diamond Pharmacy Services |
$26,768,053.00 |
Connecticut State Checkbook |
| 2020 |
Office Of Policy & Management |
Waterbury Town Treasurer |
$26,764,864.49 |
Connecticut State Checkbook |
| 2018 |
State Department Of Education |
Stratford Town Treasurer |
$26,712,230.07 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Social Services |
Dxc Technology Services Llc |
$26,643,775.07 |
Connecticut State Checkbook |
| 2021 |
Ct Innovations Inc |
Ct Innovations Incorporated |
$26,619,160.58 |
Connecticut State Checkbook |
| 2019 |
Mental Health & Addiction Serv |
Dept Of Social Services |
$26,609,722.00 |
Connecticut State Checkbook |
| 2018 |
Board Of Regents |
Western Connecticut State University |
$26,378,701.00 |
Connecticut State Checkbook |
| 2017 |
University Of Connecticut |
Kbe Building Corp |
$26,339,820.20 |
Connecticut State Checkbook |
| 2018 |
Department Of Administrative Services |
Downes Construction Company Llc |
$26,252,242.55 |
Connecticut State Checkbook |
| 2020 |
State Dept Of Education |
Town Of Southington |
$26,198,882.30 |
Connecticut State Checkbook |
| 2020 |
Dept. Of Social Services |
Dxc Technology Services Llc |
$26,192,346.40 |
Connecticut State Checkbook |
| 2019 |
State Dept Of Education |
Town Of Southington |
$26,181,893.70 |
Connecticut State Checkbook |
| 2022 |
Dept Of Administrative Svcs |
Town Of Windham |
$26,152,307.00 |
Connecticut State Checkbook |
| 2021 |
State Dept Of Education |
City Of Ansonia Town Treasurer |
$26,126,567.24 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
Whole Life Inc |
$26,022,449.52 |
Connecticut State Checkbook |
| 2022 |
Dept Of Energy & Environ Prot. |
Eversource Cl&P |
$26,005,378.86 |
Connecticut State Checkbook |
| 2017 |
State Comptroller |
Accenture Llp |
$25,911,207.02 |
Connecticut State Checkbook |
| 2022 |
Dept. Of Transportation |
Ducci Electrical Contractors Inc |
$25,893,949.32 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
Community Systems Inc |
$25,890,862.27 |
Connecticut State Checkbook |
| 2023 |
Csu - Western |
Western Connecticut State University |
$25,869,000.00 |
Connecticut State Checkbook |
| 2021 |
Csu - Western |
Western Connecticut State University |
$25,869,000.00 |
Connecticut State Checkbook |
| 2017 |
State Department Of Education |
Town Of Southington |
$25,763,845.04 |
Connecticut State Checkbook |
| 2019 |
Office Of Policy & Management |
Waterbury Town Treasurer |
$25,754,385.47 |
Connecticut State Checkbook |
| 2022 |
Mental Health & Addiction Serv |
Dept Of Social Services |
$25,687,220.38 |
Connecticut State Checkbook |
| 2021 |
Mental Health & Addiction Serv |
Dept Of Social Services |
$25,679,451.06 |
Connecticut State Checkbook |
| 2022 |
Dept Of Administrative Svcs |
Town Of Enfield |
$25,570,193.04 |
Connecticut State Checkbook |
| 2020 |
Dept. Of Transportation |
Rotha Contr Co Inc |
$25,522,949.39 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
Key Human Services Inc |
$25,518,078.83 |
Connecticut State Checkbook |
| 2021 |
Department Of Development Serv |
Marrakech Housing Options Inc |
$25,419,921.32 |
Connecticut State Checkbook |
| 2021 |
State Dept Of Education |
Vernon Town Treasurer |
$25,410,212.16 |
Connecticut State Checkbook |
| 2022 |
Department Of Development Serv |
Key Human Services Inc |
$25,377,132.08 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
Mohawk Northeast Inc |
$25,198,615.38 |
Connecticut State Checkbook |
| 2021 |
Dept Of Administrative Svcs |
Skanska Usa Building Inc |
$25,181,733.89 |
Connecticut State Checkbook |
| 2017 |
Department Of Transportation |
Judlau Contracting Inc |
$25,080,503.74 |
Connecticut State Checkbook |
| 2023 |
Office Of Policy & Management |
Town Of Hamden |
$25,042,772.34 |
Connecticut State Checkbook |
| 2020 |
Comm. College System Office |
Community College System Office |
$25,000,000.00 |
Connecticut State Checkbook |
| 2023 |
Department Of Housing |
Connecticut Foundation Solutions Indemnity Company Inc |
$25,000,000.00 |
Connecticut State Checkbook |
| 2017 |
Department Of Transportation |
Rizzo Corp |
$24,992,956.79 |
Connecticut State Checkbook |
| 2018 |
Department Of Developmental Services |
Community Residences Inc |
$24,977,465.96 |
Connecticut State Checkbook |
| 2023 |
State Dept Of Education |
Town Of Greenwich |
$24,971,348.15 |
Connecticut State Checkbook |
| 2017 |
State Department Of Education |
Town Of East Haven |
$24,927,681.29 |
Connecticut State Checkbook |
| 2022 |
Dept. Of Social Services |
Gainwell Technologies Llc |
$24,817,269.20 |
Connecticut State Checkbook |
| 2022 |
Mental Health & Addiction Serv |
Yale University |
$24,817,185.68 |
Connecticut State Checkbook |
| 2017 |
Office Of Policy & Management |
Removed For Privacy |
$24,777,409.00 |
Connecticut State Checkbook |
| 2023 |
Office Of Policy & Management |
Town Of East Hartford Town Treasurer |
$24,767,671.11 |
Connecticut State Checkbook |
| 2020 |
Dept Of Administrative Svcs |
West Haven Town Treasurer |
$24,694,884.04 |
Connecticut State Checkbook |
| 2020 |
Department Of Development Serv |
Marrakech Housing Options Inc |
$24,612,183.94 |
Connecticut State Checkbook |
| 2018 |
State Department Of Education |
Town Of East Haven |
$24,604,511.65 |
Connecticut State Checkbook |
| 2020 |
Renters Rebate |
Undisclosed |
$24,600,881.65 |
Connecticut State Checkbook |
| 2018 |
State Department Of Education |
Town Of Wallingford Treasurer Office |
$24,569,179.46 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Transportation |
Hntb Corporation |
$24,490,732.56 |
Connecticut State Checkbook |
| 2019 |
Department Of Development Serv |
The Kennedy Center Inc |
$24,467,231.34 |
Connecticut State Checkbook |
| 2020 |
State Dept Of Education |
Town Of East Haven |
$24,465,033.17 |
Connecticut State Checkbook |
| 2023 |
State Comptroller's Office |
Aetna Health Management Llc |
$24,436,186.03 |
Connecticut State Checkbook |
| 2023 |
Renters Rebate |
Undisclosed |
$24,414,580.68 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
Abilis Inc |
$24,369,967.27 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
State Dept Of Education |
$24,351,776.79 |
Connecticut State Checkbook |
| 2019 |
Renters Rebate |
Undisclosed |
$24,306,678.62 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Social Services |
Deloitte Consulting Llp |
$24,241,850.60 |
Connecticut State Checkbook |
| 2021 |
Office Of Policy & Management |
New Britain City Treasurer |
$24,210,713.74 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Social Services |
Carelon Behavioral Health Inc |
$24,169,899.00 |
Connecticut State Checkbook |
| 2018 |
State Department Of Education |
Vernon Town Treasurer |
$24,156,036.23 |
Connecticut State Checkbook |
| 2017 |
Department Of Administrative Services |
The Fusco Corp |
$24,132,487.55 |
Connecticut State Checkbook |
| 2023 |
Mental Health & Addiction Serv |
Yale University |
$24,094,530.45 |
Connecticut State Checkbook |
| 2020 |
State Dept Of Education |
Vernon Town Treasurer |
$24,084,963.16 |
Connecticut State Checkbook |