| Ymca of Naugatuck | Other Services (except Public Administration) | $184,933 | $187,152 | 106 | N/A |  AI Deep Dive |
| Mini LLC | Accommodation and Food Services | $174,878 | $176,674 | 25 | <$5M | AI Deep Dive |
| Concentric Tool & Manufacturing Company, Inc. | Manufacturing | $173,080 | $174,692 | 22 | $5.8M | AI Deep Dive |
| Sperry Automatics Company INC | Manufacturing | $170,910 | $173,023 | 14 | <$5M | AI Deep Dive |
| Rondo of America | Manufacturing | $168,661 | $170,218 | 25 | $24.8M | AI Deep Dive |
| Law Offices of Morrissey Morrissey & Rydzik LLC | Professional, Scientific, and Technical Services | $165,612 | $166,451 | 9 | <$5M | AI Deep Dive |
| Law Offices of Morrissey Morrissey & Rydzik, LLC | Professional, Scientific, and Technical Services | $165,611 | $166,691 | 9 | <$5M | AI Deep Dive |
| Young Men's Christian Association Nauguatuck | Health Care and Social Assistance | $162,200 | $163,769 | 19 | N/A | AI Deep Dive |
| Naugatuck Construction LLC | Construction | $159,588 | $161,381 | 29 | $7.3M | AI Deep Dive |
| Haversat Holdings LLC | Management of Companies and Enterprises | $155,000 | $156,278 | 17 | <$5M | AI Deep Dive |
| Haversat Holdings LLC | Manufacturing | $154,798 | $156,269 | 16 | <$5M | AI Deep Dive |
| Concentric Tool & Manufacturing Company, Inc. | Manufacturing | $154,500 | $155,317 | 21 | $5.5M | AI Deep Dive |
| Naugatuck Window and Glass LLC | Construction | $151,500 | $185,210 | 50 | $15.2M | AI Deep Dive |
| Sugar Mountain Enterprises LLC | Real Estate and Rental and Leasing | $149,733 | $151,079 | 18 | <$5M | AI Deep Dive |
| Schmidt Electric LLC | Construction | $149,623 | $150,487 | 12 | <$5M | AI Deep Dive |
| The Station Restaurant | Accommodation and Food Services | $148,674 | $149,244 | 33 | $5.9M | AI Deep Dive |
| Sugar Mountain Enterprises LLC | Real Estate and Rental and Leasing | $144,491 | $145,390 | 17 | <$5M | AI Deep Dive |
| Quality Sheet Metal INC | Manufacturing | $144,227 | $145,653 | 14 | <$5M | AI Deep Dive |
| Independence Northwest INC | Health Care and Social Assistance | $139,780 | $141,237 | 13 | <$5M | AI Deep Dive |
| Advantage Sheet Metal Mfg LLC | Manufacturing | $135,000 | $135,729 | 15 | <$5M | AI Deep Dive |
| Advantage Sheet Metal Manufacturing LLC | Manufacturing | $135,000 | $136,217 | 15 | <$5M | AI Deep Dive |
| Naugatuck Construction LLC | Construction | $133,032 | $134,181 | 25 | $6.3M | AI Deep Dive |
| Pisani Steel Fabrication INC | Manufacturing | $132,957 | $134,087 | 10 | <$5M | AI Deep Dive |
| Henry K Danziger DDS | Health Care and Social Assistance | $131,200 | $131,854 | 11 | <$5M | AI Deep Dive |
| Henry K Danziger | Health Care and Social Assistance | $130,285 | $130,785 | 10 | <$5M | AI Deep Dive |