| Forest Villa Nursing and Rehabilitation Center, LLC | Health Care and Social Assistance | $1,967,882 | $1,987,723 | 226 | $38.4M |  Research |
| Peterson Technology Partners, Inc. | Administrative and Support and Waste Management | $1,608,500 | $1,625,290 | 82 | $15.5M | Research |
| American Society of Safety Professionals | Other Services (except Public Administration) | $1,516,700 | $1,530,413 | 71 | N/A | Research |
| Spark Therapy, LLC | Health Care and Social Assistance | $1,509,250 | $1,186,759 | 89 | $20.6M | Research |
| Peterson Technology Partners Inc. | Professional, Scientific, and Technical Services | $1,500,500 | $1,509,873 | 82 | $17.0M | Research |
| Second Family Inc. | Retail Trade | $1,463,022 | $1,475,607 | 103 | $26.0M | Research |
| Second Family, Inc. | Retail Trade | $1,463,022 | $1,481,900 | 103 | $26.0M | Research |
| Midwest Diagnostic Pathology, S.c. | Health Care and Social Assistance | $1,170,200 | $1,184,980 | 58 | $18.2M | Research |
| Midwest Diagnostic Pathology, S.c. | Health Care and Social Assistance | $1,150,500 | $1,162,383 | 56 | $17.6M | Research |
| Bjb Properties INC | Real Estate and Rental and Leasing | $896,182 | $906,439 | 71 | $10.7M | Research |
| Bjb Properties Inc. | Professional, Scientific, and Technical Services | $896,182 | $904,372 | 70 | $9.8M | Research |
| Mazik Global INC | Professional, Scientific, and Technical Services | $869,457 | $875,090 | 42 | $8.7M | Research |
| Mazik Global INC | Professional, Scientific, and Technical Services | $828,872 | $833,746 | 390 | $80.7M | Research |
| Marshall Investigative Group, INC | Administrative and Support and Waste Management | $819,250 | $826,987 | 97 | $14.2M | Research |
| Terra Consulting Group | Professional, Scientific, and Technical Services | $790,700 | $795,159 | 66 | $8.1M | Research |
| First Family Inc. | Retail Trade | $704,512 | $709,748 | 45 | $11.3M | Research |
| First Family, Inc. | Retail Trade | $704,512 | $713,603 | 45 | $11.3M | Research |
| Lx Trans INC | Transportation and Warehousing | $704,255 | $709,791 | 80 | $18.2M | Research |
| Avenues to Independence INC | Health Care and Social Assistance | $687,500 | $694,661 | 100 | N/A | Research |
| Teamsters Local Union No 700 | Other Services (except Public Administration) | $674,914 | $678,612 | 38 | N/A | Research |
| Mary, Seat of Wisdom/ Catholic Bishop of Chicago | Other Services (except Public Administration) | $669,864 | $676,451 | 94 | N/A | Research |
| Lx Trans INC | Unknown | $636,220 | $641,133 | 75 | N/A | Research |
| Orthopedic Surgery Spec Limited | Health Care and Social Assistance | $600,400 | $603,385 | 67 | $21.0M | Research |
| Int'l Brotherhood of Teamsters Local Union No 727 | Other Services (except Public Administration) | $589,907 | $593,334 | 33 | N/A | Research |
| Birk Staffing & Technical Services | Professional, Scientific, and Technical Services | $589,605 | $525,192 | 5 | <$5M | Research |