| Waterstone Properties Group, Inc. | Real Estate and Rental and Leasing | $647,700 | $652,594 | 39 | $5.8M |  Research |
| Int'l Car Parts Imports Ltd | Wholesale Trade | $634,406 | $639,394 | 65 | $19.9M | Research |
| Jh Albert International Insurance Advisors, Inc. | Finance and Insurance | $621,330 | $626,094 | 30 | $15.4M | Research |
| Rk\ NE Management INC | Real Estate and Rental and Leasing | $602,355 | $608,131 | 28 | $5.1M | Research |
| Needham Pediatrics, P.c. | Health Care and Social Assistance | $593,500 | $597,407 | 29 | $9.1M | Research |
| Needham Pediatrics PC | Health Care and Social Assistance | $579,224 | $583,294 | 46 | $14.4M | Research |
| Valmarc Corporation | Manufacturing | $571,497 | $577,447 | 20 | <$5M | Research |
| The Cheviot Corporation | Construction | $554,039 | $556,840 | 30 | $34.2M | Research |
| First American Insurance Underwriters | Professional, Scientific, and Technical Services | $550,000 | $557,150 | 30 | <$5M | Research |
| Genalco, Inc. | Wholesale Trade | $544,400 | $548,188 | 39 | $11.9M | Research |
| Src Sharon LLC | Health Care and Social Assistance | $522,282 | $535,690 | 63 | $10.7M | Research |
| In4mation Insights, LLC | Professional, Scientific, and Technical Services | $521,300 | $525,746 | 23 | <$5M | Research |
| Hotel Recovery INC | Health Care and Social Assistance | $516,700 | $506,598 | 40 | $6.9M | Research |
| Rangine Corp | Manufacturing | $510,903 | $514,948 | 30 | $7.3M | Research |
| Environmental Sampling Technology, Inc. | Professional, Scientific, and Technical Services | $481,605 | $484,842 | 32 | <$5M | Research |
| Resource Options, INC | Administrative and Support and Waste Management | $481,220 | $485,337 | 30 | <$5M | Research |
| The J. Albert Company, Inc. | Retail Trade | $479,100 | $481,802 | 28 | $6.7M | Research |
| Coles & Bodoin, LLP | Professional, Scientific, and Technical Services | $479,000 | $481,887 | 22 | $7.0M | Research |
| Advantagene, Inc. | Professional, Scientific, and Technical Services | $459,578 | $464,390 | 32 | $6.6M | Research |
| Gf Sprague & Co INC | Construction | $451,230 | $455,918 | 28 | $9.2M | Research |
| Metro Total Care | Health Care and Social Assistance | $440,300 | $443,581 | 89 | $15.2M | Research |
| Anesthesia Finanical Solutions, LLC | Health Care and Social Assistance | $440,000 | $443,966 | 30 | $9.4M | Research |
| Mobius Executive Leadership, LLC | Educational Services | $434,022 | $438,683 | 20 | <$5M | Research |
| Grillo's Pickles, Inc. | Manufacturing | $427,500 | $390,895 | 21 | $7.4M | Research |
| Capron Lighting & Sound Co. Inc. | Administrative and Support and Waste Management | $422,550 | $77,756 | 42 | $7.9M | Research |