| Advanced Radiology Consultants, S.c. | Health Care and Social Assistance | $582,700 | $589,405 | 21 | <$5M |  Research |
| South Hub Radiology Pllc | Health Care and Social Assistance | $581,400 | $586,923 | 28 | $6.5M | Research |
| Illinois Urogynecology, Ltd | Health Care and Social Assistance | $554,350 | $336,727 | 23 | $7.2M | Research |
| St. Paul of the Cross School | Other Services (except Public Administration) | $545,200 | $549,774 | 75 | N/A | Research |
| Pcmi Corporation | Manufacturing | $543,000 | $546,816 | 33 | $8.6M | Research |
| Softcon USA Inc. | Professional, Scientific, and Technical Services | $512,095 | $517,586 | 21 | <$5M | Research |
| Hochstadter, Isaacson, Cherny Dumanis Oral Maxillofacial Sur | Health Care and Social Assistance | $511,616 | $517,507 | 32 | $7.4M | Research |
| Thmm Enterprises INC | Transportation and Warehousing | $506,300 | $511,194 | 60 | $9.1M | Research |
| Albert Whitman & Company | Information | $496,543 | $500,887 | 22 | <$5M | Research |
| Dimonte & Lizak LLC | Professional, Scientific, and Technical Services | $490,500 | $493,375 | 26 | $6.3M | Research |
| Stout, Krug, Krug, Ryan and Associates, Inc. | Wholesale Trade | $480,300 | $483,929 | 30 | $9.5M | Research |
| Stout Krug Krug Ryan & Associates Inc. | Wholesale Trade | $477,637 | $482,427 | 32 | $9.8M | Research |
| Dimonte & Lizak, LLC | Professional, Scientific, and Technical Services | $456,900 | $459,832 | 33 | $8.0M | Research |
| Pazzi Di Pizza Park Ridge LLC | Accommodation and Food Services | $444,920 | $447,960 | 57 | $10.1M | Research |
| V-G Supply Company | Wholesale Trade | $427,500 | $429,928 | 44 | $13.5M | Research |
| Ear, Nos and Throat Center, Inc. | Health Care and Social Assistance | $415,000 | $417,308 | 27 | $8.5M | Research |
| Softcon USA Inc. | Professional, Scientific, and Technical Services | $412,212 | $415,922 | 19 | <$5M | Research |
| Pusheen Corporation | Retail Trade | $410,655 | $414,716 | 28 | $7.0M | Research |
| Word On Fire Catholic Ministries INC | Other Services (except Public Administration) | $403,527 | $407,569 | 28 | $5.3M | Research |
| Ignite Team Partners LLC | Health Care and Social Assistance | $401,900 | $405,831 | 23 | <$5M | Research |
| Obstetrics Gynecology & Infertility, S.c. | Health Care and Social Assistance | $401,800 | $405,226 | 34 | $10.7M | Research |
| Obstetrics Gynecology & Infertility S.c. | Health Care and Social Assistance | $401,800 | $405,327 | 34 | $10.7M | Research |
| Albert Whitman & Company | Information | $401,736 | $404,771 | 26 | <$5M | Research |
| Millennium Park Living Inc. | Real Estate and Rental and Leasing | $390,958 | $394,675 | 27 | $12.2M | Research |
| Millennium Park Living, INC | Real Estate and Rental and Leasing | $390,900 | $395,173 | 29 | $13.1M | Research |