| Atf, Inc. | Manufacturing | $6,125,525 | $6,198,181 | 402 | $98.3M |  Research |
| Northside Imports, INC | Wholesale Trade | $4,121,457 | $4,191,242 | 423 | $129.6M | Research |
| Food for Thought Enterprises INC | Accommodation and Food Services | $3,219,500 | $2,986,834 | 444 | $82.9M | Research |
| Deibel Laboratories of Illinois INC | Professional, Scientific, and Technical Services | $2,712,313 | $2,944,211 | 282 | $56.8M | Research |
| Maestro Consulting Services LLC | Health Care and Social Assistance | $2,463,000 | $1,880,384 | 130 | $40.8M | Research |
| Trim-Tex, Inc. | Construction | $2,387,500 | $2,415,023 | 147 | $37.1M | Research |
| Paradigm 3 Pack Holdings LLC | Health Care and Social Assistance | $2,354,728 | $2,385,012 | 383 | $88.7M | Research |
| Elevate Care Chicago North, LLC | Health Care and Social Assistance | $2,170,573 | $2,200,539 | 239 | $40.7M | Research |
| Ness Healthcare Nfp | Health Care and Social Assistance | $2,066,300 | $2,239,738 | 273 | $46.4M | Research |
| Ness Healthcare Nfp | Health Care and Social Assistance | $2,000,000 | $2,017,167 | 240 | $40.8M | Research |
| Loeber Motors, Inc. | Retail Trade | $1,966,185 | $1,988,931 | 142 | $35.8M | Research |
| Food for Thought Enterprises INC | Accommodation and Food Services | $1,959,615 | $1,973,550 | 146 | $27.3M | Research |
| Whitehall North, LLC | Health Care and Social Assistance | $1,950,000 | $1,993,060 | 352 | $59.9M | Research |
| Concerto Dialysis LLC | Health Care and Social Assistance | $1,790,200 | $1,800,273 | 120 | $21.4M | Research |
| Advanced Plastic Corp. | Manufacturing | $1,742,263 | $1,753,878 | 151 | $149.8M | Research |
| Elevate Care Niles LLC | Health Care and Social Assistance | $1,643,950 | $1,651,804 | 198 | $33.7M | Research |
| Generations Healthcare Network, LLC | Health Care and Social Assistance | $1,561,240 | $1,580,788 | 139 | $23.6M | Research |
| Harmony Nursing and Rehabilitation Center INC | Health Care and Social Assistance | $1,535,219 | $1,569,288 | 230 | $39.1M | Research |
| Airoom LLC | Construction | $1,516,535 | $1,529,510 | 78 | $23.7M | Research |
| Louis Glunz Beer, Inc. | Wholesale Trade | $1,482,400 | $1,491,177 | 100 | $25.7M | Research |
| International Nursing & Rehab Center, LLC | Health Care and Social Assistance | $1,404,388 | $1,413,048 | 187 | $31.8M | Research |
| Elevate Care Northbrook LLC | Health Care and Social Assistance | $1,363,414 | $1,372,693 | 144 | $24.5M | Research |
| Elevate Care Riverwoods LLC | Health Care and Social Assistance | $1,335,788 | $1,346,215 | 144 | $24.5M | Research |
| Acia Tn Auto LLC | Retail Trade | $1,324,800 | $1,337,685 | 87 | $21.9M | Research |
| Elevate Care Waukegan, LLC | Health Care and Social Assistance | $1,294,961 | $1,302,227 | 179 | $30.5M | Research |