| Refrigeration Mechanical, Inc. | Woodridge | $1,750,000 | $1,784,806 | 494 | $156.3M |  AI Deep Dive |
| The W. J. Mcguire Company | Northbrook | $1,746,800 | $1,769,120 | 51 | $5.5M | AI Deep Dive |
| Miv INC - Mad8330 | Rockdale | $1,746,052 | $1,736,422 | 45 | $14.8M | AI Deep Dive |
| Hartmann Electric Company INC | Elk Grove Village | $1,740,000 | $1,750,198 | 99 | $32.6M | AI Deep Dive |
| Brookwood Builders Inc. | Forest Park | $1,737,544 | $1,753,857 | 60 | $68.4M | AI Deep Dive |
| Edon Construction Co. Inc. | Alsip | $1,732,254 | $1,747,074 | 90 | $20.8M | AI Deep Dive |
| Martin & Company Excavating | Oregon | $1,727,500 | $1,746,646 | 51 | $19.1M | AI Deep Dive |
| Valley Group, INC | Rock Island | $1,726,500 | $1,741,319 | 112 | $127.6M | AI Deep Dive |
| Holland Construction Services, Inc. | Belleville | $1,725,780 | $1,737,046 | 73 | $83.2M | AI Deep Dive |
| Rcs Construction, Inc. | East Alton | $1,715,520 | $1,728,243 | 81 | $25.1M | AI Deep Dive |
| G & M Electrical Contractors Co. | Chicago | $1,715,482 | $1,726,394 | 64 | $21.1M | AI Deep Dive |
| Universal Power and Control, Inc. | Carol Stream | $1,711,790 | $1,750,856 | 53 | $17.4M | AI Deep Dive |
| Performance Floors Corp. | Joliet | $1,702,405 | $1,717,490 | 56 | $19.1M | AI Deep Dive |
| Performance Floors, Corporation | Joliet | $1,702,405 | $1,720,942 | 70 | $23.9M | AI Deep Dive |
| Hartwig Plumbing & Heating, Inc. | Harvard | $1,701,402 | $1,720,543 | 95 | $30.1M | AI Deep Dive |
| Central Building & Preservation, LP | Chicago | $1,696,200 | $1,716,507 | 69 | $16.0M | AI Deep Dive |
| B & B Electric INC | Springfield | $1,695,000 | $1,706,018 | 79 | $26.0M | AI Deep Dive |
| Cleats Mfg, Inc. | Chicago | $1,693,700 | $1,709,951 | 58 | $18.3M | AI Deep Dive |
| Conveyor Specialties Inc. | Crest Hill | $1,691,221 | $1,698,503 | 119 | $40.5M | AI Deep Dive |
| Conveyor Specialties, INC | Crest Hill | $1,691,200 | $1,708,958 | 25 | $8.0M | AI Deep Dive |
| Christy-Foltz, INC | Decatur | $1,689,400 | $1,708,171 | 41 | $46.7M | AI Deep Dive |
| Christy-Foltz INC | Decatur | $1,689,370 | $1,698,380 | 41 | $46.7M | AI Deep Dive |
| Combined Roofing Services, LLC | West Chicago | $1,689,100 | $1,707,948 | 38 | $12.5M | AI Deep Dive |
| Ambar INC | Romeoville | $1,688,300 | $1,707,012 | 70 | $16.2M | AI Deep Dive |
| Martin Cement Co. | Romeoville | $1,679,100 | $1,695,983 | 60 | $13.9M | AI Deep Dive |