| Massey's Plate Glass & Aluminum, Inc. | Construction | $8,630,200 | $8,652,987 | 162 | $37.5M |  Research |
| Owens, Renz & Lee Co., Inc. | Administrative and Support and Waste Management | $4,815,783 | $4,899,625 | 500 | $108.3M | Research |
| Physicians Alliance of Connecticut LLC | Health Care and Social Assistance | $3,615,627 | $2,845,580 | 256 | $80.4M | Research |
| Cherry Hill Glass Co., Inc. | Construction | $3,087,500 | $3,128,610 | 168 | $38.9M | Research |
| The Connecticut Hospice INC | Health Care and Social Assistance | $2,770,822 | $2,802,379 | 205 | $40.7M | Research |
| Blakeslee Prestress INC | Manufacturing | $2,515,100 | $2,547,693 | 149 | $147.8M | Research |
| Csc Enterprises, INC | Health Care and Social Assistance | $2,289,500 | $2,315,531 | 250 | $42.5M | Research |
| Blakeslee Arpaia Chapman, Inc. | Construction | $2,270,635 | $2,298,069 | 91 | $28.2M | Research |
| Massey's Plate Glass & Aluminum INC | Construction | $2,000,000 | $2,009,205 | 162 | $37.5M | Research |
| Controlled Air, INC | Construction | $1,693,787 | $1,707,477 | 95 | $30.1M | Research |
| Atlas Companies LLC | Construction | $1,644,400 | $1,661,392 | 178 | $60.7M | Research |
| The Atlas Companies, LLC | Management of Companies and Enterprises | $1,485,100 | $1,499,002 | 94 | $15.4M | Research |
| Black Rock Truck Group, Inc. | Wholesale Trade | $1,385,500 | $1,404,859 | 75 | $23.0M | Research |
| Black Rock Truck Group INC New England Truck Sales and Serv | Wholesale Trade | $1,385,500 | $1,404,593 | 69 | $21.1M | Research |
| The Smedley Company | Construction | $1,253,300 | $1,265,972 | 80 | $91.1M | Research |
| Pat Munger Construction Company Inc. | Construction | $1,192,655 | $1,203,634 | 70 | $79.8M | Research |
| Reitman Personnel Inc. | Administrative and Support and Waste Management | $1,162,500 | $1,172,373 | 151 | $23.8M | Research |
| Reitman Personnel Services INC | Administrative and Support and Waste Management | $1,130,000 | $1,138,854 | 154 | $24.2M | Research |
| Giordano Construction Co., Inc. | Construction | $1,103,620 | $1,115,745 | 30 | $34.2M | Research |
| New England Orthotic and Prosthetic Systems LLC | Manufacturing | $1,036,214 | $1,043,056 | 69 | $19.3M | Research |
| Pat Munger Construction Company, Inc. | Construction | $969,155 | $976,165 | 74 | $84.3M | Research |
| New England Orthotic and Prosthetic Systems, LLC | Transportation and Warehousing | $968,700 | $974,486 | 73 | $11.0M | Research |
| The Smedley Company | Construction | $957,500 | $970,748 | 46 | $52.4M | Research |
| Premier Subaru, LLC | Retail Trade | $929,322 | $940,276 | 78 | $19.7M | Research |
| Brandfon Motors INC | Other Services (except Public Administration) | $880,327 | $888,961 | 74 | $14.5M | Research |