| Voss Belting & Specialty Co. | Manufacturing | $663,000 | $671,748 | 46 | $12.0M |  Research |
| Aperion Care Elgin | Health Care and Social Assistance | $650,598 | $656,326 | 80 | $13.6M | Research |
| Human Resource Devlpmt Services INC | Educational Services | $647,700 | $653,064 | 30 | <$5M | Research |
| Gage Assembly Company | Manufacturing | $638,085 | $644,825 | 48 | $12.6M | Research |
| Elevate Woodview Nursing and Rehabilitation LLC | Health Care and Social Assistance | $630,307 | $635,735 | 103 | $17.5M | Research |
| Trek Freight Services, LLC | Transportation and Warehousing | $610,700 | $615,268 | 34 | $13.2M | Research |
| Aperion Care Peru, LLC | Health Care and Social Assistance | $610,565 | $615,885 | 81 | $13.8M | Research |
| Aperion Care Morton Villa LLC | Health Care and Social Assistance | $604,798 | $610,829 | 78 | $13.3M | Research |
| Twin Cities Nursing & Rehab LLC | Health Care and Social Assistance | $585,405 | $588,677 | 67 | $11.4M | Research |
| Aperion Consulting LLC | Professional, Scientific, and Technical Services | $581,604 | $584,265 | 36 | <$5M | Research |
| Aperion Care Spring Valley, LLC | Health Care and Social Assistance | $569,360 | $574,690 | 95 | $16.2M | Research |
| Aperion Care Kokomo, LLC | Health Care and Social Assistance | $562,581 | $567,483 | 72 | $12.2M | Research |
| Aperion Care Demotte, LLC | Health Care and Social Assistance | $558,820 | $563,735 | 83 | $14.1M | Research |
| Aperion Care Bradley LLC | Health Care and Social Assistance | $558,488 | $563,824 | 68 | $11.6M | Research |
| Plum Grove Nursing and Rehab LLC | Health Care and Social Assistance | $540,528 | $546,114 | 62 | $10.5M | Research |
| Aperion Care Toluca, LLC | Health Care and Social Assistance | $505,665 | $510,483 | 72 | $12.2M | Research |
| Aperion Care Princeton, LLC | Health Care and Social Assistance | $500,936 | $505,903 | 77 | $13.1M | Research |
| Aperion Care West Ridge, LLC | Health Care and Social Assistance | $496,893 | $501,641 | 73 | $12.4M | Research |
| Aperion Care Peoria Heights LLC | Health Care and Social Assistance | $486,254 | $491,103 | 70 | $11.9M | Research |
| Plaza Nursing and Rehabilitation Center LLC | Health Care and Social Assistance | $483,898 | $488,602 | 64 | $10.9M | Research |
| Gs Healthcare, LLC | Health Care and Social Assistance | $468,227 | $471,700 | 99 | $16.8M | Research |
| Acia Hn Auto LLC | Retail Trade | $450,100 | $454,490 | 44 | $11.1M | Research |
| Evanston Nursing and Rehab Center LLC | Health Care and Social Assistance | $447,866 | $452,494 | 65 | $11.1M | Research |
| Upa LLC | Real Estate and Rental and Leasing | $445,218 | $447,704 | 49 | $7.3M | Research |
| Exceptional Care, LLC | Health Care and Social Assistance | $445,040 | $447,698 | 56 | $9.5M | Research |