| American Alarm & Communications, Inc. | Administrative and Support and Waste Management | $4,565,700 | $4,617,486 | 270 | $39.5M |  Research |
| Armstrong Ambulance Service INC | Health Care and Social Assistance | $2,222,593 | $2,248,585 | 314 | $72.8M | Research |
| Armstrong Ambulance Service Inc. | Health Care and Social Assistance | $2,000,000 | $2,009,500 | 284 | $65.8M | Research |
| Mirak Chevrolet, Inc. | Retail Trade | $1,550,000 | $1,564,566 | 109 | $27.5M | Research |
| Metropolitan Home Health Services, Inc. | Health Care and Social Assistance | $1,252,600 | $1,263,479 | 300 | $51.4M | Research |
| Structure Consulting Group, INC | Professional, Scientific, and Technical Services | $1,040,982 | $1,049,310 | 68 | $7.0M | Research |
| Medford Visiting Nursing Association | Health Care and Social Assistance | $941,200 | $950,246 | 184 | $31.5M | Research |
| Sunbug Solar, LLC | Construction | $910,337 | $916,659 | 55 | $18.1M | Research |
| Arlington Catholic High School | Educational Services | $877,500 | $892,296 | 64 | N/A | Research |
| Ellenhorn LLC | Health Care and Social Assistance | $868,000 | $873,081 | 55 | $12.9M | Research |
| Column Health, LLC | Health Care and Social Assistance | $858,306 | $863,384 | 72 | $12.2M | Research |
| Ellenhorn LLC | Health Care and Social Assistance | $836,245 | $840,682 | 61 | $14.3M | Research |
| Park Avenue Health Center, LLC | Health Care and Social Assistance | $773,940 | $781,013 | 107 | $18.2M | Research |
| Arlington Heights Nursery School | Educational Services | $744,375 | $749,902 | 74 | $8.9M | Research |
| Arlington Heights Nursery School Inc. | Health Care and Social Assistance | $700,448 | $705,955 | 34 | $5.5M | Research |
| Homer Contracting Inc. | Construction | $680,000 | $685,856 | 38 | $43.3M | Research |
| Mjm Masonry & Custom Construction INC | Construction | $556,980 | $562,168 | 44 | <$5M | Research |
| Arlington Pediatric Associates P.c. | Health Care and Social Assistance | $520,600 | $524,579 | 29 | $9.1M | Research |
| Arlington Pediatric Associates P.c. | Health Care and Social Assistance | $520,600 | $525,506 | 24 | $7.5M | Research |
| W.t. Kenney Co., Inc. | Construction | $516,200 | $523,837 | 29 | $7.3M | Research |
| Alternative Transportation Systems LLC | Transportation and Warehousing | $509,417 | $515,091 | 56 | $17.2M | Research |
| John's Landscape Service INC | Administrative and Support and Waste Management | $506,000 | $509,188 | 38 | $8.2M | Research |
| Old Arlington Restaurant, Inc. | Accommodation and Food Services | $501,775 | $505,176 | 71 | $12.6M | Research |
| Arlington Coal & Lumber Company | Retail Trade | $499,673 | $506,504 | 24 | <$5M | Research |
| Family Practice Group PC | Health Care and Social Assistance | $484,500 | $489,624 | 16 | <$5M | Research |