| Gurtz Electric Co. | Construction | $10,000,000 | $10,115,890 | 483 | $158.9M |  Research |
| Advance Mechanical Systems, Inc. | Construction | $7,500,000 | $7,585,068 | 420 | $132.9M | Research |
| Kroeschell, Inc. | Construction | $6,840,000 | $6,928,920 | 300 | $98.7M | Research |
| Paddock Publications, INC | Information | $4,001,700 | $4,048,568 | 250 | $42.0M | Research |
| Atomatic Mechanical Services INC | Construction | $3,814,600 | $3,859,210 | 138 | $43.7M | Research |
| Weber Marking Systems, Inc. | Manufacturing | $3,222,978 | $3,259,684 | 209 | $54.7M | Research |
| Fluence Automation LLC | Professional, Scientific, and Technical Services | $2,845,907 | $2,878,082 | 163 | $16.9M | Research |
| Alliance for Audited Media | Other Services (except Public Administration) | $2,285,040 | $2,286,980 | 113 | N/A | Research |
| A.b.c. Plumbing, Heating, Cooling, & Electric, Inc. | Construction | $2,254,000 | $3,065,789 | 220 | $69.6M | Research |
| J.a. Johnson Paving Company | Construction | $2,178,700 | $1,501,440 | 43 | $13.3M | Research |
| Scranton Gillette Communications, Inc. | Information | $2,124,905 | $2,149,720 | 108 | $18.1M | Research |
| G. E. Riddiford Company, Inc. | Construction | $2,083,332 | $2,107,492 | 100 | $33.0M | Research |
| Advance Mechanical Systems Inc. | Construction | $2,000,000 | $2,012,110 | 227 | $71.8M | Research |
| Scranton Gillette Communications Inc. | Information | $2,000,000 | $2,025,589 | 100 | $16.8M | Research |
| Fluence Automation LLC | Professional, Scientific, and Technical Services | $2,000,000 | $2,017,000 | 153 | $15.8M | Research |
| Johler Inc. | Construction | $1,959,130 | $1,970,722 | 65 | $24.4M | Research |
| Johler, Inc. | Construction | $1,944,315 | $1,966,783 | 55 | $20.6M | Research |
| St. Viator High School | Educational Services | $1,914,000 | $1,932,575 | 142 | N/A | Research |
| Cobra Concrete Cutting Services Co | Construction | $1,823,222 | $1,837,048 | 80 | $30.0M | Research |
| Napleton's Arlington Heights Motors, INC | Retail Trade | $1,575,815 | $1,611,977 | 101 | $25.5M | Research |
| Advansoft International INC | Professional, Scientific, and Technical Services | $1,475,900 | $1,492,832 | 81 | $16.8M | Research |
| Arlington Heights Ford, INC | Retail Trade | $1,436,782 | $1,455,400 | 100 | $25.2M | Research |
| Transitional Care Center of Arlington Heights, LLC | Health Care and Social Assistance | $1,395,803 | $1,412,747 | 173 | $29.4M | Research |
| Battaglia Industries, Inc. | Construction | $1,378,700 | $1,389,956 | 122 | $38.6M | Research |
| The Federated Group Inc. | Retail Trade | $1,357,395 | $1,366,821 | 110 | $27.5M | Research |