| Wisconsin Lift Truck Corp. | Wholesale Trade | $5,690,300 | $5,749,541 | 418 | $128.1M |  Research |
| Lindengrove, Inc. | Health Care and Social Assistance | $4,392,300 | $4,442,601 | 500 | N/A | Research |
| Common Links Construction, LLC | Construction | $4,340,448 | $4,390,965 | 185 | $46.7M | Research |
| Greenfield Rehabilitation Agency, INC | Health Care and Social Assistance | $4,167,000 | $4,213,922 | 250 | $67.5M | Research |
| R.a. Smith, Inc. | Professional, Scientific, and Technical Services | $3,754,300 | $3,796,119 | 198 | $24.4M | Research |
| Stark Pavement Corporation | Manufacturing | $3,500,000 | $3,546,019 | 160 | $158.7M | Research |
| Lemberg Electric Co Employee Stock Op | Construction | $3,500,000 | $3,541,125 | 199 | $65.5M | Research |
| Trace-A-Matic Corporation | Manufacturing | $3,459,500 | $3,500,540 | 213 | $52.1M | Research |
| Concurrency, Inc. | Professional, Scientific, and Technical Services | $3,366,500 | $3,405,769 | 143 | $14.8M | Research |
| Patina Solutions Group, Inc. | Administrative and Support and Waste Management | $3,165,500 | $3,202,098 | 151 | $23.8M | Research |
| Premier Real Estate Management LLC | Finance and Insurance | $3,045,200 | $2,878,156 | 484 | $248.7M | Research |
| Hunzinger Construction Company | Construction | $2,997,000 | $3,031,486 | 118 | $134.4M | Research |
| Rf Technologies | Manufacturing | $2,957,600 | $2,991,957 | 133 | $34.8M | Research |
| International Foundation of Employee Benefit Plans INC | Other Services (except Public Administration) | $2,629,752 | $2,659,890 | 147 | N/A | Research |
| Centare Holdings Inc. | Professional, Scientific, and Technical Services | $2,400,834 | $2,428,844 | 95 | $9.8M | Research |
| Regency Terrace South, Inc. | Health Care and Social Assistance | $2,398,700 | $2,425,973 | 176 | $29.9M | Research |
| Rausch, Sturm, Israel, Enerson & Hornik LLP | Professional, Scientific, and Technical Services | $2,306,600 | $2,255,933 | 173 | $42.0M | Research |
| Psab Enterprises, Inc. | Administrative and Support and Waste Management | $2,301,400 | $2,328,378 | 500 | $108.3M | Research |
| Cma/flodyne/hydradyne, Inc. | Wholesale Trade | $2,297,000 | $2,323,242 | 134 | $41.0M | Research |
| A.a. Anderson & Co., Inc. | Wholesale Trade | $2,221,500 | $2,246,081 | 122 | $37.4M | Research |
| United Mailing Services, Inc. | Administrative and Support and Waste Management | $2,096,000 | $2,122,186 | 301 | $56.9M | Research |
| Shorewest Realtors, Inc. | Real Estate and Rental and Leasing | $2,082,500 | $2,108,346 | 233 | $33.8M | Research |
| Capps, LLC | Administrative and Support and Waste Management | $2,010,800 | $2,033,883 | 168 | $31.8M | Research |
| Rf Technologies INC | Manufacturing | $2,000,000 | $2,019,945 | 112 | $29.3M | Research |
| International Foundation of Employee Benefit Plans Inc. | Other Services (except Public Administration) | $2,000,000 | $2,018,620 | 147 | N/A | Research |