| Paul Dinto Electrical Contractors, Inc. | Construction | $4,843,200 | $4,897,868 | 342 | $112.5M |  Research |
| Paul Dinto Electrical Contractors INC | Construction | $2,000,000 | $2,008,603 | 141 | $46.4M | Research |
| Jaci Carroll Staffing Services INC | Professional, Scientific, and Technical Services | $1,470,210 | $1,478,347 | 286 | $29.6M | Research |
| Jaci Carroll Staffing Services | Administrative and Support and Waste Management | $1,470,200 | $1,482,606 | 286 | $45.0M | Research |
| County Line Buick Nissan INC | Retail Trade | $1,313,000 | $1,327,461 | 54 | $13.6M | Research |
| County Line Buick Nissan INC | Retail Trade | $1,313,000 | $1,325,482 | 54 | $13.6M | Research |
| Westover School, INC | Educational Services | $910,300 | $919,529 | 65 | N/A | Research |
| Lake Quassapaug Amusement Park I | Arts, Entertainment, and Recreation | $887,527 | $892,014 | 33 | <$5M | Research |
| The Next Street | Educational Services | $857,389 | $863,168 | 203 | $26.4M | Research |
| The Next Street | Educational Services | $857,300 | $864,464 | 110 | $14.3M | Research |
| Moore O'brien & Foti | Professional, Scientific, and Technical Services | $755,520 | $759,660 | 34 | $8.3M | Research |
| Law Offices of Moore, O'brien & Foti | Professional, Scientific, and Technical Services | $614,500 | $618,322 | 35 | $8.5M | Research |
| Geodesign, Inc. DBA Geomechanics | Unknown | $577,132 | $581,484 | 29 | N/A | Research |
| Geodesign Inc. | Professional, Scientific, and Technical Services | $559,470 | $562,897 | 28 | <$5M | Research |
| R & S Construction Services INC | Construction | $558,705 | $561,981 | 36 | $11.9M | Research |
| R & S Construction Services INC | Construction | $493,760 | $498,156 | 34 | $11.2M | Research |
| Vyne LLC | Accommodation and Food Services | $449,000 | $453,178 | 21 | <$5M | Research |
| Orthopaedics New England, P.c. | Health Care and Social Assistance | $422,530 | $425,783 | 29 | $5.2M | Research |
| Lake Quassapaug Amusement Park | Arts, Entertainment, and Recreation | $368,770 | $372,796 | 11 | <$5M | Research |
| Honey Badger Management, Inc. | Administrative and Support and Waste Management | $362,610 | $364,766 | 18 | <$5M | Research |
| Interventional Spine & Sports Medicine PC | Health Care and Social Assistance | $356,853 | $358,270 | 25 | $7.8M | Research |
| Interventional Spine & Sports Medicine PC | Health Care and Social Assistance | $356,700 | $360,687 | 25 | $7.8M | Research |
| Chew Chews, Inc. | Accommodation and Food Services | $342,080 | $345,360 | 69 | $12.3M | Research |
| Naugatuck Valley Cardiovascular Associates LLC | Health Care and Social Assistance | $336,100 | $339,120 | 25 | $7.8M | Research |
| National Breaker Services LLC | Manufacturing | $307,393 | $309,220 | 20 | $5.2M | Research |