| Blum Shapiro & Company, P.c. | Professional, Scientific, and Technical Services | $8,402,284 | $8,495,276 | 467 | $148.6M |  Research |
| The American School, at Hartford, for the Deaf | Educational Services | $4,528,680 | $4,585,506 | 352 | N/A | Research |
| Anb-Ptsma Holdings Inc. | Health Care and Social Assistance | $2,637,300 | $2,667,834 | 176 | $47.5M | Research |
| Blum Shapiro Consulting, LLC | Professional, Scientific, and Technical Services | $2,410,549 | $1,920,645 | 120 | $38.2M | Research |
| Kingswood Oxford School INC | Educational Services | $2,124,106 | $2,148,373 | 169 | $20.3M | Research |
| Specialty Transportation INC | Transportation and Warehousing | $2,000,000 | $2,016,222 | 260 | $79.8M | Research |
| The American School at Hartford for the Deaf | Other Services (except Public Administration) | $2,000,000 | $2,009,275 | 300 | N/A | Research |
| Specialty Transportation INC | Transportation and Warehousing | $1,883,572 | $1,904,658 | 352 | $135.3M | Research |
| Angel Touch Care LLC | Health Care and Social Assistance | $1,572,413 | $1,586,629 | 470 | $80.5M | Research |
| Brookview Corporation | Health Care and Social Assistance | $1,442,000 | $1,449,230 | 190 | $32.3M | Research |
| Delamar West Hartford LLC | Accommodation and Food Services | $1,400,800 | $1,412,551 | 75 | $23.5M | Research |
| United Tool and Die Company | Manufacturing | $1,347,700 | $1,362,617 | 101 | $26.4M | Research |
| Hughes Health and Rehabilitation INC | Health Care and Social Assistance | $1,346,660 | $1,439,960 | 152 | $25.9M | Research |
| Har-Conn Chrome Company | Manufacturing | $1,341,400 | $1,354,998 | 110 | $26.9M | Research |
| Renbrook School INC | Educational Services | $1,268,100 | $1,278,384 | 103 | N/A | Research |
| The Joyce D and Andrew J Mandell | Arts, Entertainment, and Recreation | $1,250,000 | $1,261,493 | 164 | N/A | Research |
| The Joyce D. and Andrew J. Mandell Greater Hartford Jewish C | Other Services (except Public Administration) | $1,250,000 | $1,263,681 | 121 | N/A | Research |
| Northwest Catholic High School Corporation | Educational Services | $1,228,200 | $1,229,290 | 79 | N/A | Research |
| Rk Bradley Associates LP | Accommodation and Food Services | $1,200,745 | $1,207,749 | 98 | $30.6M | Research |
| The Har Conn Chrome Company | Manufacturing | $1,153,253 | $1,166,302 | 91 | $22.2M | Research |
| Advanced Scaffold Services, LLC | Construction | $1,117,732 | $1,130,042 | 25 | $7.9M | Research |
| Lux Bond & Green Inc. | Retail Trade | $1,092,232 | $1,097,050 | 76 | $21.0M | Research |
| Lux Bond & Green INC | Retail Trade | $1,092,000 | $1,099,390 | 76 | $21.0M | Research |
| The Abbott Ball Company | Manufacturing | $1,082,700 | $1,093,052 | 64 | $15.6M | Research |
| Okee Industries INC | Wholesale Trade | $1,055,368 | $1,062,022 | 68 | $20.8M | Research |