| Milestone | Health Care and Social Assistance | $4,467,436 | $4,490,145 | 485 | $82.5M |  Research |
| Rock Oak Services Group LLC | Information | $2,843,700 | $2,897,224 | 288 | $48.4M | Research |
| Rockford Anesthesiologist Associated, LLC | Health Care and Social Assistance | $2,533,500 | $2,562,167 | 106 | $21.0M | Research |
| Onsite Woodwork Corporation | Manufacturing | $2,079,500 | $2,103,087 | 150 | $39.3M | Research |
| Cimco Resources, Inc. | Manufacturing | $1,925,517 | $1,945,960 | 161 | $45.0M | Research |
| Cimco Resources Inc. | Manufacturing | $1,690,472 | $1,701,885 | 164 | $45.8M | Research |
| Anderson Automotive Inc. | Retail Trade | $1,663,700 | $1,679,380 | 166 | $41.8M | Research |
| N-Trak Group, LLC | Construction | $1,597,000 | $1,614,523 | 65 | $22.1M | Research |
| Rock Valley Oil & Chemical Co. | Manufacturing | $1,156,120 | $1,165,121 | 51 | $50.6M | Research |
| Custom Nardi Systems, Inc. | Professional, Scientific, and Technical Services | $1,081,600 | $1,096,357 | 53 | $12.3M | Research |
| Napleton's Autowerks, Inc. | Retail Trade | $1,046,975 | $1,060,057 | 80 | $20.2M | Research |
| Custom Nardi Systems Inc. | Professional, Scientific, and Technical Services | $1,016,509 | $1,027,760 | 53 | $12.3M | Research |
| Ned E. Dickey and Associates, Inc. | Administrative and Support and Waste Management | $1,015,100 | $932,465 | 139 | $21.9M | Research |
| Ned E. Dickey and Associates Inc. | Administrative and Support and Waste Management | $1,001,067 | $1,007,951 | 150 | $23.6M | Research |
| Skyward Corporation | Manufacturing | $1,000,345 | $1,005,375 | 61 | $60.5M | Research |
| Aircraft Gear Corporation | Manufacturing | $989,100 | $995,197 | 77 | $20.2M | Research |
| Skyward Corporation | Manufacturing | $870,000 | $876,743 | 68 | $67.4M | Research |
| Rockford Specialties Company | Manufacturing | $818,300 | $828,097 | 84 | $20.5M | Research |
| Lm Sheet Metal Inc. | Construction | $750,000 | $754,938 | 25 | $28.5M | Research |
| Arachnid 360 LLC | Arts, Entertainment, and Recreation | $749,700 | $610,010 | 56 | $7.8M | Research |
| L.m. Sheet Metal, Inc. | Construction | $689,000 | $696,522 | 23 | $7.3M | Research |
| Lamonica Beverages INC | Wholesale Trade | $678,300 | $682,630 | 62 | $16.0M | Research |
| Clinton Electronics Corporation | Wholesale Trade | $673,533 | $677,851 | 37 | $11.7M | Research |
| Arachnid 360 LLC | Arts, Entertainment, and Recreation | $655,857 | $660,703 | 90 | $12.6M | Research |
| Semper Fi Express LLC | Retail Trade | $619,758 | $624,275 | 100 | $15.6M | Research |