| Nelson Group Enterprises, Inc. | Construction | $2,071,600 | $2,095,711 | 73 | $23.3M |  Research |
| All American Commercial Roofing, Inc. | Construction | $1,664,000 | $1,674,955 | 84 | $27.7M | Research |
| Gere Marie Corporation | Manufacturing | $1,558,618 | $1,525,481 | 157 | $38.4M | Research |
| Tuf-Tite, Inc. | Administrative and Support and Waste Management | $1,517,400 | $1,531,014 | 112 | $21.2M | Research |
| Chicagoland Paving Contractors Inc. | Construction | $1,493,167 | $1,509,177 | 49 | $15.2M | Research |
| Mcnelly Services, Inc. | Construction | $1,464,501 | $1,478,130 | 133 | $45.3M | Research |
| Paragon Micro Inc. | Professional, Scientific, and Technical Services | $1,447,400 | $1,457,934 | 75 | $15.5M | Research |
| Food Equipment Technologies Company | Manufacturing | $1,403,780 | $1,412,960 | 116 | $30.4M | Research |
| Food Equipment Technologies Company | Manufacturing | $1,403,780 | $1,412,788 | 82 | $21.5M | Research |
| Chicagoland Paving Contractors, Inc. | Construction | $1,090,890 | $1,102,708 | 27 | $8.4M | Research |
| Aircraft Propeller Service, LLC | Transportation and Warehousing | $1,020,500 | $1,030,062 | 64 | <$5M | Research |
| Mount St. Joseph | Health Care and Social Assistance | $963,190 | $975,310 | 148 | N/A | Research |
| All Rite Industries INC | Manufacturing | $952,605 | $957,897 | 94 | $23.0M | Research |
| All Rite Industries INC | Manufacturing | $952,605 | $956,415 | 88 | $21.5M | Research |
| Esscoe LLC | Administrative and Support and Waste Management | $931,120 | $937,250 | 52 | $7.6M | Research |
| Esscoe, LLC | Administrative and Support and Waste Management | $931,100 | $936,891 | 52 | $7.6M | Research |
| Apex Landscaping Inc. | Administrative and Support and Waste Management | $917,500 | $929,096 | 106 | $23.0M | Research |
| Aircraft Propeller Service LLC | Other Services (except Public Administration) | $910,200 | $917,232 | 62 | $13.3M | Research |
| Morgan Bronze Products, Inc. | Manufacturing | $870,000 | $672,083 | 48 | $11.7M | Research |
| 7 County Concrete Const LLC | Construction | $800,067 | $808,934 | 20 | $22.8M | Research |
| Bish Creative Display Inc. | Professional, Scientific, and Technical Services | $797,018 | $801,247 | 37 | <$5M | Research |
| Bish Creative Display, Inc. | Professional, Scientific, and Technical Services | $786,573 | $791,205 | 46 | $5.2M | Research |
| Eastek International Corporation | Manufacturing | $773,300 | $782,644 | 446 | $116.8M | Research |
| Designcraft, Inc. | Manufacturing | $733,998 | $745,538 | 39 | $10.9M | Research |
| L.a.c.e. Inc. | Other Services (except Public Administration) | $649,012 | $653,609 | 119 | $22.7M | Research |