| Concrete by Wagner INC | Construction | $1,979,590 | $2,000,486 | 33 | $7.6M |  Research |
| Mcmahon Transport Group, LLC | Transportation and Warehousing | $1,900,860 | $1,908,569 | 94 | $25.1M | Research |
| Beary Landcape Management Inc. | Administrative and Support and Waste Management | $1,610,743 | $1,618,662 | 280 | $60.7M | Research |
| Beary Landscape Management, INC | Professional, Scientific, and Technical Services | $1,457,000 | $1,467,887 | 280 | $56.4M | Research |
| Mcmahon Transport Group, LLC | Transportation and Warehousing | $1,455,200 | $1,463,406 | 88 | $23.5M | Research |
| J.p. Mcmahon Petro-Chem Transport Group, LLC | Manufacturing | $1,362,400 | $1,369,940 | 67 | $17.5M | Research |
| Magenta LLC | Manufacturing | $1,139,934 | $1,150,478 | 71 | $70.4M | Research |
| Lockport Steel Fabricators, LLC | Manufacturing | $1,070,200 | $1,080,081 | 66 | $17.3M | Research |
| Lockport Steel Fabricators LLC | Manufacturing | $1,066,917 | $1,081,883 | 52 | $12.7M | Research |
| Deerfield Construction Group, Inc. | Construction | $993,018 | $871,120 | 60 | $18.6M | Research |
| Clausen Structures, Inc. | Construction | $982,300 | $987,576 | 63 | $19.5M | Research |
| Deerfield Construction Group Inc. | Construction | $964,653 | $969,905 | 53 | $16.4M | Research |
| Midwest Tankermen Inc. | Transportation and Warehousing | $737,000 | $744,875 | 35 | <$5M | Research |
| Midwest Tankermen INC | Transportation and Warehousing | $737,000 | $745,057 | 35 | <$5M | Research |
| Midwest Property Development , LLC | Real Estate and Rental and Leasing | $686,407 | $690,537 | 79 | $11.8M | Research |
| Homer Tree Care, Inc. | Administrative and Support and Waste Management | $681,000 | $684,935 | 47 | $10.2M | Research |
| Andromeda Computing Systems Inc. | Professional, Scientific, and Technical Services | $674,715 | $679,632 | 49 | $10.1M | Research |
| Joliet Cabinet Co. | Manufacturing | $633,800 | $641,793 | 43 | $11.3M | Research |
| Triple G Enterprises INC - Tab3117 | Transportation and Warehousing | $622,847 | $626,908 | 47 | $7.1M | Research |
| Triple G Enterprises, Inc. | Transportation and Warehousing | $622,800 | $626,230 | 42 | $11.2M | Research |
| Andromeda Computing Systems, Inc. | Professional, Scientific, and Technical Services | $543,755 | $547,167 | 43 | $8.9M | Research |
| John Russ and Company, Inc. | Construction | $541,649 | $547,491 | 22 | $6.8M | Research |
| Beary Landscaping INC | Administrative and Support and Waste Management | $528,900 | $532,881 | 85 | $18.4M | Research |
| Suburban Chicago Accessory Center, LLC | Wholesale Trade | $528,500 | $534,379 | 43 | $13.2M | Research |
| Homer Industries, L.l.c. | Administrative and Support and Waste Management | $513,900 | $516,869 | 34 | $7.4M | Research |