| Year |
Employer |
Vendor Name |
Amount |
Source |
| 2025 |
Dept. Of Transportation |
Wsp Usa Inc |
$21,097,063.01 |
Connecticut State Checkbook |
| 2024 |
Dept. Of Social Services |
New Opportunities Inc |
$21,085,888.01 |
Connecticut State Checkbook |
| 2025 |
Dept. Of Social Services |
Connecticut Health Insurance Exchange |
$21,064,584.48 |
Connecticut State Checkbook |
| 2019 |
Dept Of Administrative Svcs |
West Haven Town Treasurer |
$21,050,553.00 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
The Caring Community Of Connecticut Inc |
$21,039,728.96 |
Connecticut State Checkbook |
| 2025 |
State Dept Of Education |
Goodwin University Educational Services Inc |
$21,015,929.40 |
Connecticut State Checkbook |
| 2019 |
Dept Of Administrative Svcs |
Stratford Town Treasurer |
$20,952,704.00 |
Connecticut State Checkbook |
| 2022 |
Dept Of Emrg Svc & Public Prot |
Dept Of Public Health |
$20,924,304.65 |
Connecticut State Checkbook |
| 2017 |
Connecticut Housing Finance Authority |
Connecticut Housing Finance Authority |
$20,908,654.36 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Public Health |
City Of Groton |
$20,889,091.15 |
Connecticut State Checkbook |
| 2020 |
Department Of Development Serv |
Network Inc |
$20,846,116.95 |
Connecticut State Checkbook |
| 2017 |
Department Of Public Health |
Dept Of Social Services |
$20,844,175.64 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
Town Of Killingly |
$20,831,777.38 |
Connecticut State Checkbook |
| 2021 |
Department Of Development Serv |
Key Human Services Inc |
$20,830,405.60 |
Connecticut State Checkbook |
| 2021 |
Mental Health & Addiction Serv |
Dept Of Administrative Services |
$20,801,078.47 |
Connecticut State Checkbook |
| 2025 |
Department Of Development Serv |
Ices Inc |
$20,790,359.95 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
Town Of Plainfield |
$20,745,317.10 |
Connecticut State Checkbook |
| 2020 |
Department Of Development Serv |
Whole Life Inc |
$20,740,366.28 |
Connecticut State Checkbook |
| 2023 |
State Dept Of Education |
Town Of Windsor |
$20,721,856.52 |
Connecticut State Checkbook |
| 2025 |
Office Of Early Childhood |
City Of Hartford |
$20,697,936.60 |
Connecticut State Checkbook |
| 2025 |
Department Of Development Serv |
The Arc Of The Farmington Valley Inc |
$20,654,138.78 |
Connecticut State Checkbook |
| 2023 |
Mental Health & Addiction Serv |
Continuum Of Care Inc |
$20,607,216.58 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Transportation |
Empire Paving Inc |
$20,601,705.47 |
Connecticut State Checkbook |
| 2020 |
Dept. Of Transportation |
Northeast Transportation Co Inc |
$20,595,785.61 |
Connecticut State Checkbook |
| 2022 |
Public Defender Services |
Undisclosed |
$20,569,755.15 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
Hntb Corporation |
$20,560,716.04 |
Connecticut State Checkbook |
| 2023 |
State Dept Of Education |
Town Of Plainfield |
$20,544,346.81 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
Vinfen Corporation Of Connecticut Inc |
$20,529,045.12 |
Connecticut State Checkbook |
| 2024 |
State Dept Of Education |
Town Of Windsor |
$20,510,217.64 |
Connecticut State Checkbook |
| 2017 |
Department Of Mental Heath And Addiction Services |
Dept Of Mental Health And Addiction Svcs Central Office |
$20,505,819.09 |
Connecticut State Checkbook |
| 2021 |
State Dept Of Education |
Town Of Killingly |
$20,462,976.46 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Social Services |
Community Renewal Team Inc |
$20,443,780.02 |
Connecticut State Checkbook |
| 2023 |
Office Of Policy & Management |
City Of Danbury |
$20,434,307.79 |
Connecticut State Checkbook |
| 2024 |
Mental Health & Addiction Serv |
Advanced Behaviorial Health Inc |
$20,394,622.19 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Transportation |
Norwalk Town Treasurer |
$20,388,378.54 |
Connecticut State Checkbook |
| 2017 |
Department Of Mental Heath And Addiction Services |
Yale University |
$20,379,901.03 |
Connecticut State Checkbook |
| 2024 |
Dept Of Administrative Svcs |
Town Of Windham |
$20,353,645.02 |
Connecticut State Checkbook |
| 2018 |
Department Of Transportation |
Rotha Contr Co Inc |
$20,330,194.66 |
Connecticut State Checkbook |
| 2022 |
Mental Health & Addiction Serv |
Community Health Resources Inc |
$20,326,876.50 |
Connecticut State Checkbook |
| 2021 |
Dept Of Energy & Environ Prot. |
Town Of Wallingford Treasurer Office |
$20,324,055.62 |
Connecticut State Checkbook |
| 2022 |
Ccc - Naugatuck Valley |
Community College System Office |
$20,323,221.48 |
Connecticut State Checkbook |
| 2024 |
Dept. Of Transportation |
Hntb Corporation |
$20,320,354.83 |
Connecticut State Checkbook |
| 2021 |
Probate Court Administration |
Connecticut Probate Courts |
$20,282,190.77 |
Connecticut State Checkbook |
| 2021 |
Mental Health & Addiction Serv |
Dept Of Mental Health And Addiction Svcs Central Office |
$20,280,000.00 |
Connecticut State Checkbook |
| 2025 |
Judicial Branch |
Community Partners In Action Inc |
$20,180,949.55 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Social Services |
Connecticut Health Insurance Exchange |
$20,170,886.57 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
Wsp Usa Inc |
$20,143,803.77 |
Connecticut State Checkbook |
| 2020 |
Department Of Development Serv |
Key Human Services Inc |
$20,138,263.17 |
Connecticut State Checkbook |
| 2021 |
Department Of Development Serv |
Community Systems Inc |
$20,119,800.51 |
Connecticut State Checkbook |
| 2024 |
Dept. Of Transportation |
Banton Construction Company Inc |
$20,119,119.70 |
Connecticut State Checkbook |
| 2020 |
Department Of Development Serv |
Community Systems Inc |
$20,114,467.54 |
Connecticut State Checkbook |
| 2020 |
Dept. Of Public Health |
Pfizer Inc |
$20,109,314.00 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
Area Cooperative Educational Services |
$20,055,392.26 |
Connecticut State Checkbook |
| 2018 |
Department Of Social Services |
Connecticut Health Insurance Exchange |
$20,018,993.55 |
Connecticut State Checkbook |
| 2022 |
Department Of Development Serv |
Abilis Inc |
$20,006,608.93 |
Connecticut State Checkbook |
| 2025 |
Department Of Development Serv |
Harc Inc |
$20,005,547.61 |
Connecticut State Checkbook |
| 2023 |
State Dept Of Education |
State Education Resource Center |
$20,000,671.51 |
Connecticut State Checkbook |
| 2018 |
Department Of Economic & Community Development |
Henkel Of America Inc |
$20,000,000.00 |
Connecticut State Checkbook |
| 2020 |
Office Of Policy & Management |
The Partnership For Connecticut Inc |
$20,000,000.00 |
Connecticut State Checkbook |
| 2017 |
Department Of Administrative Services |
Newfield Construction Inc |
$19,999,859.14 |
Connecticut State Checkbook |
| 2024 |
State Dept Of Education |
Town Of Plainfield |
$19,989,574.97 |
Connecticut State Checkbook |
| 2023 |
Office Of Policy & Management |
Norwalk Town Treasurer |
$19,972,910.98 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
Town Of Bloomfield |
$19,947,971.14 |
Connecticut State Checkbook |
| 2018 |
Department Of Transportation |
Wsp Usa Inc |
$19,942,674.79 |
Connecticut State Checkbook |
| 2025 |
Dept. Of Social Services |
New Opportunities Inc |
$19,916,517.31 |
Connecticut State Checkbook |
| 2025 |
Department Of Development Serv |
Sunrise Northeast Inc |
$19,889,712.81 |
Connecticut State Checkbook |
| 2023 |
State Dept Of Education |
Town Of Plainville |
$19,874,928.91 |
Connecticut State Checkbook |
| 2022 |
Ccc - Housatonic |
Community College System Office |
$19,874,369.87 |
Connecticut State Checkbook |
| 2023 |
Office Of Higher Education |
University Of Connecticut |
$19,839,687.56 |
Connecticut State Checkbook |
| 2017 |
Department Of Mental Heath And Addiction Services |
Community Health Resources Inc |
$19,833,199.33 |
Connecticut State Checkbook |
| 2020 |
Probate Court Administration |
Connecticut Probate Courts |
$19,802,771.76 |
Connecticut State Checkbook |
| 2023 |
Dept. Of Transportation |
Aetna Bridge Company |
$19,760,483.65 |
Connecticut State Checkbook |
| 2020 |
Teachers' Retirement Board |
Anthem Bc/Bs Of Connecticut |
$19,758,682.32 |
Connecticut State Checkbook |
| 2023 |
Department Of Development Serv |
Primecare Inc |
$19,751,058.61 |
Connecticut State Checkbook |
| 2025 |
Teachers' Retirement Board |
Cigna Health And Life Insurance Company |
$19,750,249.25 |
Connecticut State Checkbook |
| 2022 |
Mental Health & Addiction Serv |
Community Mental Health Affiliates Inc |
$19,728,190.51 |
Connecticut State Checkbook |
| 2024 |
Department Of Development Serv |
Sunrise Northeast Inc |
$19,719,005.18 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Public Health |
Urgent Care Medical Associates Llc |
$19,717,845.00 |
Connecticut State Checkbook |
| 2019 |
Mental Health & Addiction Serv |
Community Mental Health Affiliates Inc |
$19,711,259.21 |
Connecticut State Checkbook |
| 2021 |
Econ. & Community Development |
Ct Innovations Incorporated |
$19,700,000.00 |
Connecticut State Checkbook |
| 2022 |
Department Of Development Serv |
The Arc Eastern Connecticut |
$19,699,792.50 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
City Of Milford |
$19,666,727.24 |
Connecticut State Checkbook |
| 2022 |
State Dept Of Education |
Wethersfield Town Treasurer |
$19,614,170.98 |
Connecticut State Checkbook |
| 2024 |
Dept. Of Children And Families |
The Village For Families & Children Inc |
$19,581,410.25 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Transportation |
Greater Hartford Transit Distrct |
$19,519,026.64 |
Connecticut State Checkbook |
| 2022 |
Dept Of Administrative Svcs |
Capitol Region Education Council |
$19,515,449.60 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Social Services |
Connecticut Health Insurance Exchange |
$19,460,717.63 |
Connecticut State Checkbook |
| 2019 |
State Dept Of Education |
Town Of Killingly |
$19,433,748.93 |
Connecticut State Checkbook |
| 2023 |
State Dept Of Education |
City Of Milford |
$19,412,492.02 |
Connecticut State Checkbook |
| 2019 |
Dept. Of Transportation |
Northeast Transportation Co Inc |
$19,405,708.73 |
Connecticut State Checkbook |
| 2025 |
Dept. Of Transportation |
Norwalk Transit District |
$19,403,631.94 |
Connecticut State Checkbook |
| 2023 |
Econ. & Community Development |
Connecticut Center For Advanced Technology Inc |
$19,403,000.00 |
Connecticut State Checkbook |
| 2019 |
Department Of Development Serv |
Whole Life Inc |
$19,372,673.58 |
Connecticut State Checkbook |
| 2025 |
Dept Of Energy & Environ Prot. |
Greater New Haven Water Pollution Control Authority |
$19,362,878.43 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Social Services |
Beacon Health Options Inc |
$19,360,228.85 |
Connecticut State Checkbook |
| 2021 |
Dept. Of Public Health |
Merck Sharp & Dohme Corp |
$19,344,143.42 |
Connecticut State Checkbook |
| 2021 |
Mental Health & Addiction Serv |
Community Health Resources Inc |
$19,342,981.36 |
Connecticut State Checkbook |
| 2017 |
Department Of Transportation |
Greater Bridgeport Transit Authority |
$19,334,947.47 |
Connecticut State Checkbook |
| 2018 |
Department Of Transportation |
Hntb Corporation |
$19,313,628.52 |
Connecticut State Checkbook |
| 2022 |
State Comptroller's Office |
United Healthcare Insurance Company |
$19,312,386.12 |
Connecticut State Checkbook |