| Nwn Corporation | Wholesale Trade | $9,748,600 | $9,398,363 | 407 | $124.7M |  Research |
| Thomas G. Gallagher, Inc. | Construction | $8,323,800 | $8,420,680 | 294 | $93.0M | Research |
| Cadmus Holding Company, Inc. | Professional, Scientific, and Technical Services | $7,615,000 | $7,703,842 | 413 | $42.7M | Research |
| Boston Ivf LLC | Health Care and Social Assistance | $5,887,642 | $5,963,455 | 475 | $84.5M | Research |
| New England Donor Services, Inc. | Health Care and Social Assistance | $5,151,300 | $0 | 250 | N/A | Research |
| Commodore Builders, LLC | Construction | $4,450,200 | $4,502,366 | 122 | $37.1M | Research |
| Charles Services and Equipment Corporation | Administrative and Support and Waste Management | $4,224,222 | $4,089,820 | 64 | $10.1M | Research |
| Proair Holdings Corporation | Manufacturing | $3,721,500 | $3,551,835 | 292 | $76.5M | Research |
| Walden Behavioral Care, Inc. | Health Care and Social Assistance | $3,595,430 | $3,635,579 | 428 | $84.9M | Research |
| Veterans Transportation LLC | Transportation and Warehousing | $3,449,800 | $3,488,740 | 275 | $84.5M | Research |
| Jewish Family & Children's Service, Inc. | Health Care and Social Assistance | $3,263,200 | $3,313,802 | 376 | N/A | Research |
| Harrison Global LLC | Transportation and Warehousing | $3,228,900 | $3,266,054 | 500 | $485.0M | Research |
| Prestwick Holdings LLC | Finance and Insurance | $3,019,200 | $3,053,362 | 171 | $87.9M | Research |
| Mastoran Corporation | Accommodation and Food Services | $2,756,852 | $2,793,763 | 500 | $88.8M | Research |
| Eastern Bearings INC | Wholesale Trade | $2,650,365 | $2,393,133 | 153 | $46.9M | Research |
| Waltham Committee, INC DBA Wci | Health Care and Social Assistance | $2,571,400 | $2,601,552 | 334 | N/A | Research |
| Connectrn, Inc. | Administrative and Support and Waste Management | $2,488,100 | $2,519,478 | 224 | $35.3M | Research |
| Seachange International INC | Professional, Scientific, and Technical Services | $2,412,890 | $2,440,035 | 165 | $34.1M | Research |
| Ande Corporation | Manufacturing | $2,288,625 | $2,319,076 | 72 | $18.9M | Research |
| Commodore Builders LLC | Construction | $2,000,000 | $2,013,611 | 174 | $198.2M | Research |
| Proair Holdings Corporation | Manufacturing | $2,000,000 | $2,025,260 | 293 | $76.7M | Research |
| Amps Electric Inc. | Construction | $2,000,000 | $2,011,945 | 197 | $64.8M | Research |
| Tecogen INC | Manufacturing | $1,874,269 | $1,885,155 | 79 | $20.7M | Research |
| Tecogen Inc. | Manufacturing | $1,874,200 | $1,887,859 | 92 | $24.1M | Research |
| Gann Academy-The New Jewish High School of Greater Boston, I | Educational Services | $1,759,300 | $1,778,676 | 35 | N/A | Research |