| Peregrine Corporation | Health Care and Social Assistance | $866,900 | $872,920 | 85 | N/A |  Research |
| Windham Millwork INC | Construction | $800,985 | $811,088 | 64 | $20.2M | Research |
| Subco Enterprises INC | Accommodation and Food Services | $774,800 | $779,298 | 140 | $24.9M | Research |
| All Med Staffing of Maine, LLC | Health Care and Social Assistance | $635,892 | $639,150 | 52 | $8.9M | Research |
| Subco Enterprises Inc. | Accommodation and Food Services | $550,500 | $554,889 | 96 | $17.0M | Research |
| Ledgewood Manor INC | Health Care and Social Assistance | $463,405 | $467,303 | 65 | $11.1M | Research |
| Richardsons Boatyard | Arts, Entertainment, and Recreation | $373,903 | $376,033 | 26 | <$5M | Research |
| Coastal Road Repair, LLC | Construction | $371,900 | $373,966 | 34 | $10.5M | Research |
| Maine Family Camping, INC | Retail Trade | $349,800 | $351,831 | 29 | $7.6M | Research |
| Yellow Dog Enterprises INC | Health Care and Social Assistance | $349,100 | $351,408 | 53 | $8.6M | Research |
| Yellow Dog Enterprises INC | Health Care and Social Assistance | $349,100 | $351,243 | 46 | $7.5M | Research |
| Southern Maine Oral & Surgery P.a. | Health Care and Social Assistance | $345,000 | $348,220 | 40 | $9.3M | Research |
| Fbs Plumbing & Heating Co. | Construction | $344,900 | $347,458 | 20 | $6.3M | Research |
| Lighthouse Imaging, LLC | Health Care and Social Assistance | $320,480 | $322,777 | 20 | <$5M | Research |
| Octagon Cleaning & Restoration INC | Administrative and Support and Waste Management | $292,400 | $294,049 | 28 | $6.1M | Research |
| Octagon Cleaning & Restoration INC | Administrative and Support and Waste Management | $292,400 | $294,398 | 28 | $5.3M | Research |
| Mwave Industries LLC | Manufacturing | $263,800 | $265,229 | 20 | $5.2M | Research |
| Math-Copper L.l.c. | Accommodation and Food Services | $261,285 | $262,838 | 33 | $5.9M | Research |
| Windham Weaponry, Inc. | Manufacturing | $253,200 | $254,761 | 17 | <$5M | Research |
| Rustler's Windham Inc. | Accommodation and Food Services | $253,160 | $255,456 | 25 | <$5M | Research |
| Northeast Residential Services, LLC | Health Care and Social Assistance | $222,800 | $223,945 | 46 | $7.8M | Research |
| Southern Maine Oral and Maxillofacial Surgery | Health Care and Social Assistance | $222,500 | $224,088 | 30 | $7.0M | Research |
| Cr Tandberg INC | Mining, Quarrying, and Oil and Gas Extraction | $220,582 | $222,027 | 18 | <$5M | Research |
| Smart Child and Family Services | Health Care and Social Assistance | $210,000 | $211,196 | 40 | N/A | Research |
| Fbs Plumbing & Heating Co | Construction | $201,550 | $203,465 | 17 | $5.4M | Research |